Means To Apply Magnetic Force Directly To Position Or Hold Work Part Patents (Class 29/744)
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Publication number: 20030179006Abstract: A testing system for automatic testing of circuit boards (1) in a circuit board manufacturing line. The testing system comprises a set (I) of test modules (4) comprising a testing apparatus. Each test module comprises a horizontal module conveyor (5) for conveying a circuit board (1) into and out of the test module. The test modules are arranged in a superposed relation with respect to each other. The set (I) contains test modules differing from each other so that the testing operations performed by these test modules are different from each other. A feed device (6) has been fitted to receive circuit boards from the first line conveyor (3) and to feed them into the test modules (4).Type: ApplicationFiled: March 19, 2003Publication date: September 25, 2003Inventors: Hannu Seppala, Pekka Kurppa, Jarmo Teeri
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Patent number: 6622378Abstract: The invention relates to a handling module for at least one component (12) for mounting on and removal from a component carrier (14), having a holding device (22) which has at least one receptacle which is matched to the component (12), having a coil (42) which is arranged at an end of the holding device (22) which faces towards the component (22), is energized when the holding device (22) is being at least partially positioned with respect to the at least one component (12) and positions the at least one component (12) with respect to the holding device (22) by means of magnetic holding force.Type: GrantFiled: February 11, 2000Date of Patent: September 23, 2003Inventor: Helmut Fischer
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Patent number: 6585245Abstract: A system for performing an operation relating to a printed wiring board, including a first supporting table having a planar first supporting surface, a portion of the first supporting table that defines the first supporting surface being formed of a ferromagnetic material; a plurality of supporting members each of which has a seat portion having a bottom surface which is seated on the first supporting surface, and a support surface opposite to the bottom surface, a portion of the seat portion being formed of a permanent magnet, each supporting member being attached, owing to a magnetic force of the permanent magnet, to the first supporting surface to support a back surface of the wiring board; an operation performing device which performs an operation for a front surface of the wiring board whose back surface is supported by the respective support surfaces of the supporting members; a second supporting table which is provided in a vicinity of the first supporting table and has a second supporting surface whicType: GrantFiled: July 27, 2001Date of Patent: July 1, 2003Assignee: Fuji Machine Manufacturing Co., Ltd.Inventors: Takeyoshi Isogai, Hiroshi Katsumi, Noriaki Iwaki
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Patent number: 6490784Abstract: An automatic electronic component-mounting apparatus is provided. A nut member is slidably arranged between a pair of rails. A head-lifting/lowering member is lowered and lifted with respect to the main block via the pair of rails and the nut member. A mounting head is attached to the head-lifting/lowering member. The head-lifting/lowering member is lowered and lifted to cause the mounting head to pick up an electronic chip component and then mount the electronic chip component on a printed circuit board. The head-lifting/lowering member is formed of a metal-ceramic composite material produced by combining a ceramic reinforcing material with a metal.Type: GrantFiled: January 24, 2000Date of Patent: December 10, 2002Assignee: Sanyo Electric Co., Ltd.Inventors: Yoshinori Kano, Yoshinao Usui, Takahiro Nagata
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Patent number: 6487769Abstract: Methods and apparatus are disclosed for assembling an electric machine. The electric machine includes a plurality of stator segment assemblies that are mounted inside of a housing of an electric machine. The stator segment assemblies are positioned around an outer surface of an assembly fixture. The stator segment assemblies are held to the assembly fixture using a magnetic field that is generated by the assembly fixture. The housing is press fit or hot dropped over the stator segment assemblies. If the housing is hot dropped, the housing is heated to cause the housing to expand. The housing is positioned over the stator segment assemblies while the housing is hot. The housing cools and contracts around the stator segment assemblies to form an interference fit with the stator segment assemblies and then the stator and the housing are removed from the assembly fixture.Type: GrantFiled: November 30, 2000Date of Patent: December 3, 2002Assignee: Emerson Electric Co.Inventors: Charles P. Ketterer, Donald J. Williams, Raymond D. Heilman
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Patent number: 6467157Abstract: An apparatus is provided for constructing a segmented annular permanent magnet from a predetermined number of previously magnetized segments of predetermined shape and size comprising a rotateable carrousel, at least two of a plurality of removable ferromagnetic segments, an introducing means and a removing means.Type: GrantFiled: January 26, 2000Date of Patent: October 22, 2002Assignee: Odin Technologies, Ltd.Inventors: Avinoam Livni, Yoav Katz
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Patent number: 6438822Abstract: A method of examining a position of at least one board-support pin which is positioned on a board-support base for supporting a printed-circuit board under a back surface thereof, the method including the steps of taking an image of the board-support pin, at a position opposed to a free end of the pin, judging whether the position of the board-support pin is appropriate, based on the taken image, and producing judgment information indicative of a result of the judgment.Type: GrantFiled: August 15, 2000Date of Patent: August 27, 2002Assignee: Fuji Machine Mfg. Co., Ltd.Inventor: Tomohiko Hattori
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Patent number: 6429384Abstract: A structure that adhesively couples a chip to an organic chip carrier. The chip is attached to a top surface of the organic chip carrier by interfacing a solder bump between a C4 solder structure on the chip and a pad on a top surface of the chip carrier. The melting temperature of the solder bump is less than the melting temperature of the C4 solder structure. A block of ferrous material is on a top surface of the chip. A temporary or permanent stiffener of ferrous material is on the top surface of the chip carrier. A permanent magnet is coupled to a bottom surface of the chip carrier. Alternatively, an electromagnetic could be utilized instead of the electromagnet. Due to the permanent magnet or the electromagnet, a magnetic force on the stiffener is directed toward the magnet and substantially flattens the first surface of the chip carrier. Similarly, a magnetic force on the block is directed toward the magnet such that the electronic component and the chip carrier are held in alignment.Type: GrantFiled: June 7, 2000Date of Patent: August 6, 2002Assignee: International Business Machines CorporationInventors: Francis J. Downes, Jr., Robert M. Japp, Mark V. Pierson
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Publication number: 20020069505Abstract: A method for manufacturing a nanotube cartridge including the steps of: adhering numerous nanotubes to a surface of a holder, disposing a knife edge at an inclination to the surface of the holder so that the knife edge is raised with its tip end being in contact with the surface of the holder, and collecting the nanotubes to near the tip end of the knife edge by moving the knife edge in a direction opposite from the tip end with the tip end being kept in contact with the surface, thus allowing the nanotubes to be arranged on the tip end of the knife edge with the nanotubes protruding from the tip end. When adhering the nanotubes to the holder surface, nanotubes are merely put in a vessel, the holder is placed in the vessel, and then the vessel is vibrated.Type: ApplicationFiled: December 7, 2001Publication date: June 13, 2002Applicant: YOSHIKAZU NAKAYAMA and DAIKEN CHEMICAL CO., LTD.Inventors: Yoshikazu Nakayama, Seiji Akita, Takayoshi Kishida, Akio Harada
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Patent number: 6339733Abstract: It is provided an automatic MDF control system comprising: a plurality of matrix boards provided with openings in locations where a plurality of first wires and second wires cross without electrical connections; a robot which inserts electrically conductive connecting pins into the openings and connects the first wires with the second wires where the pins are inserted; a path data conversion unit converting connection requests from an operating terminal into path data having a plurality of addresses of the openings; a robot command conversion unit receiving the path data and converting the path data into robot commands for controlling activity of the robot as a distance moved by the robot moving between the plurality of addresses being reduced by a selected sequence of the converted path data; and a robot control unit controlling the activity of the robot based on the robot commands.Type: GrantFiled: October 13, 1998Date of Patent: January 15, 2002Assignee: Fujitsu LimitedInventors: Takashi Mizutani, Masaaki Muraai, Hitoshi Isobe, Atsuhiro Makino, Masahiro Ito
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Publication number: 20010045007Abstract: An integrated circuit (IC) device is mounted onto a printed circuit board (PCB) by inducing a magnetic field of a selected strength at the surface of the PCB to temporarily hold the IC device onto the PCB. The IC device is provided with magnetic material which is attracted by the magnetic field. The magnetic field is maintained while the IC device and PCB are tested, and then subsequently during soldering when the IC device is permanently bonded to the PCB.Type: ApplicationFiled: May 10, 1999Publication date: November 29, 2001Inventor: DONALD D. BALDWIN
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System and method for automatically tensioning wires and for retaining tensioned wires under tension
Publication number: 20010045003Abstract: A wire tensioning apparatus and method tensions one or more wires by moving the tensioning function from a wire module to an apparatus external to the wire module. Externally to the wire module, a wire is attached to a fixed end and a movable end. Tension is placed on the wire, and the tension in the wire or the vibrational frequency of the wire is detected and compared to a desired value. If the tension in, or the vibrational frequency of, the tensioned wire does not correspond to the desired value, the tension is further adjusted until the desired value is met. Once the desired tension or the vibrational frequency is met, the wire is secured in the wire module in order to maintain the achieved tension and/or vibrational frequency.Type: ApplicationFiled: March 6, 2001Publication date: November 29, 2001Applicant: XEROX CorporationInventors: Leopold B. Dondiz, Timothy C. Warren, Patricia Moran -
Patent number: 6295483Abstract: One matrix board aggregate accommodating two matrix boards is made one unit of a switch. Three of the matrix board aggregates are vertically located, groups of such three vertically-located matrix board aggregates are laterally located and robots are provided between the matrix board aggregates. By providing a number of robots, the switch operation speeds up. The robots are controlled by a control circuit/power supply RMC/POW. I/O cables for connecting an MDF apparatus to an exchange or to lines are provided at the back. In a three-stage switching configuration, by devising the location of primary, secondary and tertiary switches, interconnection between matrix board aggregates can be made using BWBs made of a printed wiring board.Type: GrantFiled: February 5, 1999Date of Patent: September 25, 2001Assignee: Fujitsu LimitedInventors: Hitoshi Isobe, Masahiro Ito, Takashi Murakami
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Patent number: 6138345Abstract: A matrix-switch-board unit has two wiring-pattern arrays which are respectively formed in opposite sides of the unit so as to be electrically isolated from and to cross each other, respective through holes extending between and through the crossing portions of the wiring pattern arrays on the opposite sides of the unit. A connection pin inserting and extracting device automatically and selectively inserts a connection pin into a selected one of the through holes for interconnecting the corresponding opposed, crossing pattern portions and extracts a connection pin from a corresponding one of the through holes for disconnecting same. Pivotally mounted toggle arms of the device have respective ends with laterally extending hook portions in opposed relationship and are rotatable in a first sense to engage a pin between the hook portions and in an opposite sense to release a connection pin engaged thereby.Type: GrantFiled: February 18, 1998Date of Patent: October 31, 2000Assignee: Fujitsu LimitedInventors: Toshihiro Suzuki, Naoto Kaneko, Eiichi Kakihara, Koichi Shimamura, Yasunori Hachiyama, Hirofumi Oosawa, Hitoshi Isobe
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Patent number: 5992005Abstract: Methods of manufacturing a magnetic device and a manufacturing tool employing the methods. One of the methods includes the steps of: (1) applying an adhesive between opposing end faces of first and second core-portions of a magnetic core of the magnetic device, (2) placing the first and second core-portions proximate a permanent magnet during a cure-time of the adhesive, the permanent magnet causing the first and second core-portions to be magnetically attracted to one another to fix the first core-portion relative to the second core-portion and (3) separating the permanent magnet from the first and second core-portions following expiration of the cure-time, the adhesive thereafter fixing the first core-portion relative to the second core-portion.Type: GrantFiled: December 27, 1996Date of Patent: November 30, 1999Assignee: Lucent Technologies Inc.Inventors: Robert Joseph Roessler, William Lonzo Woods
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Patent number: 5915749Abstract: An integrated circuit (IC) device is mounted onto a printed circuit board (PCB) by inducing a magnetic field of a selected strength at the surface of the PCB to temporarily hold the IC device onto the PCB. The IC device is provided with magnetic material which is attracted by the magnetic field. The magnetic field is maintained while the IC device and PCB are tested, and then subsequently during soldering when the IC device is permanently bonded to the PCB.Type: GrantFiled: August 17, 1995Date of Patent: June 29, 1999Assignee: Micron Technology, Inc.Inventor: Donald D. Baldwin
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Patent number: 5860208Abstract: A mounting apparatus includes two stages each, a carrier which carries two printed boards to respective stages and parts feeders located on both sides of the carrier. The mounting apparatus further includes two heads driven by two-dimensional linear motor system, each of which is arranged to mount electronic components onto the respective board. Since two boards are treated at the same time, large throughput is obtained. Further, since one board is treated by one head, the tangle of the cables does not occur.Type: GrantFiled: March 6, 1997Date of Patent: January 19, 1999Assignee: Brother Kogyo Kabushiki KaishaInventor: Hiroaki Nomura
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Patent number: 5850685Abstract: A machine (10) for receiving and operating a terminal applicator (12) in the attaching of an electrical terminal (14) to a conductor includes a magnetic power unit (28) having a fixed electromagnet (30) attached to the frame (20) and a movable electromagnet (32) coupled to the terminal applicator (12). The machine includes a cycling mechanism (86) for manually moving the movable electromagnet (32) through the power and return strokes of the terminal applicator (12). The cycling mechanism (86) includes a lead screw (88) having a nut (102) in threaded engagement therewith that moves vertically when the lead screw is rotated. A latch (110) attached to the nut (102) pivots into an opening (112) in the periphery (114) of the movable electromagnet (32) when the lead screw is rotated in one direction (130). As the lead screw (88) is rotated further the latch (110) carries the movable electromagnet (32) downwardly through its power stroke.Type: GrantFiled: July 29, 1997Date of Patent: December 22, 1998Assignee: The Whitaker CorporationInventors: Donald William Wright, Michael Anthony Yeomans, Michael David Strong
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Patent number: 5611139Abstract: Structure and a method for producing very dense bodies from particulate materials. An electrically conductive drive member is positioned adjacent the particulate material. A significant magnitude of electrical current is caused to flow through the electrically conductive drive member. A magnetic field is established and large magnitudes of magnetic pressure are created, and pressure directly from or indirectly from the magnetic pressure is applied upon the particulate material, and the particulate material is compressed and compacted. In one embodiment of the invention electrical current creates a magnetic field which is applied to an electrically conductive pressure member which moves and applies compaction pressure upon the particulate material. Electromagnetic pressure in accordance with this invention may be applied to a compacted body of particulate material, and the compressibility and density of the body of particulate material is increased.Type: GrantFiled: April 6, 1995Date of Patent: March 18, 1997Assignee: IAP Research, Inc.Inventors: Bhanumathi Chelluri, John P. Barber, Duane C. Newman
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Patent number: 5600189Abstract: An electromagnetic actuator (1) comprises two actuator sections which are translatable relative to one another along an actuator axis (1a) and which are rotatable about the actuator axis, a first actuator section (1) comprising a coil system and a second actuator section (3) comprising a permanent magnet system for cooperation with the coil system via an air gap. The coil system is arranged on a magnetically conductive yoke (5) and comprises a cylindrical translation coil (9) and a toroidal rotation coil (7), which are coaxial with the actuator axis. The permanent magnet system comprises an annular magnet (11), which is coaxial with the actuator axis, for cooperation with both the translation coil and the rotation coil. The magnet has a radial magnetisation (B) which is interrupted by an annular segment (13). The magnetically conductive yoke has a central core (5b) around which the translation coil is arranged and a shell (5a) on which the rotation coil is disposed.Type: GrantFiled: July 6, 1995Date of Patent: February 4, 1997Assignee: U.S. Philips CorporationInventors: Johannes M. A. M. Van Geel, Johan C. Compter, Volker Kessler
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Patent number: 5557841Abstract: This invention provides an arrangement wherein members, such as a guide tube, feed rod, air cylinders, and parts feeding control unit, which perform the parts feeding function, are supported with good balance to ensure that a part is inserted in a receiving hole in a mating part, for example a hole in a movable electrode, accurately and with high reliability.The basic arrangement comprises a guide tube 1 joined to the lower side 16 of a base plate 14, an air cylinder 29 attached to the upper side 19 of the base plate 14, and a stationary member 31 to which the air cylinder is firmly joined.Type: GrantFiled: January 25, 1995Date of Patent: September 24, 1996Inventors: Yoshitaka Aoyama, Shoji Aoyama
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Patent number: 5355577Abstract: Abstract: A method of rapidly assembling many discrete microelectronic or micro-mechanical devices 56 (FIG. 2 ) in a precise configuration (FIG. 8f). The devices are placed randomly on a template (FIG. 3 ) consisting of a pair of oppositely charged planar electrodes. The upper electrode contains a multiplicity of apertures. The template is vibrated and the devices are attracted to the apertures and trapped thereat. The shape of a given aperture determines the number, orientation, and type of device that it traps. The process is completed by mechanically and electrically connecting the devices. The present method for serf-assembly allows many sub-millimeter sized electronic components or other particles to be rapidly assembled into a predetermined configuration. The method relies on vibration and weak electrical or magnetic forces.Type: GrantFiled: June 23, 1992Date of Patent: October 18, 1994Inventor: Michael B. Cohn
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Patent number: 5288119Abstract: An apparatus for removing and replacing small batteries in electronic devices such as hearing aids or handling small magnetic parts has a housing in which a reciprocating shaft is placed having a magnet at one end. When the reciprocating shaft is placed in its extended pickup position, the magnet is brought close to the end of the housing, and into contact with the battery or other magnetic object. Once in contact with the object, the apparatus may be used for manipulation. Once the object is placed where it is to be left, the reciprocating shaft may be moved to a retracted position weakening the magnetic field holding the battery to the end of the apparatus. The reciprocating shaft is moved and locked into its extended and retracted positions with a rotating ratchet mechanism operated with a thumb of the hand that holds the apparatus. A shim in separable parts of the housing makes adjustment of the terminal end position of the magnet possible.Type: GrantFiled: October 22, 1992Date of Patent: February 22, 1994Inventors: Thomas C. Crawford, Jr., William T. Jones, Jr.
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Patent number: 5181312Abstract: An attaching or mounting tool (21) is used for fixing a heating coil (16) to an insulating material support (13). The heating coil (16) is inserted in slots (24) therein and are held in place by magnetic force. Resilient positioning devices (28) are provided in openings (26) in the tool (21) and into the same can be introduced the nose (36) of a clip fitting device (24), so that the heating coils can be fixed to the support (13) by means of clips.Type: GrantFiled: May 31, 1991Date of Patent: January 26, 1993Assignee: E.G.O. Elektro-Gerate Blanc u. FischerInventor: Martin Gross
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Patent number: 5046235Abstract: A method of assembling a transformer core in which a lamination of rectangular plates formed of a magnetic material is inserted in the spaces in primary and secondary transformer coils, and in which the opposite ends of the lamination are brought into abutment each other to form the lamination into an annular shape. The lamination of the magnetic material plates is bent into a U-like shape with the transformer coils thereon and is magnetized by energizing the transformer coils, while the opposite ends of each magnetic material plate are restrained from being brought closer to each other. The opposite ends of the laminated magnetic material plates are successively released from the restrained state from the innermost opposed ends of the U-like shape to attract and closely contact each other by the magnetic force.Type: GrantFiled: February 13, 1991Date of Patent: September 10, 1991Assignees: Hitachi, Ltd., The Tokyo Electric Power Co., Ltd.Inventors: Yukinori Taneda, Sei Hoshizawa, Katsuya Nagayama, Tatsukichi Matsuura
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Patent number: 5011365Abstract: Apparatus for feeding bundles of laminations (PL) to a machine that processes or uses such bundles, particularly to a machine for making rotors or stators for electric machines, transformers, or the like, and having a vertical feeding duct (1) into which the vertically oriented bundles of laminations are introduced in sequence from above. A movable grasping and transferring device (10, 11) with one or more permanent magnets or electromagnets cyclically takes a bundle of laminations (PL) from a stationary or movable magazine (3) located in a withdrawal station and conveys this bundle co-axially over the opening of the feeding duct (1) of the machine, so as to set the bundle into the duct.Type: GrantFiled: May 24, 1989Date of Patent: April 30, 1991Assignee: Sassi S.r.l.Inventor: Umberto Sassi
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Patent number: 4998859Abstract: A transferring apparatus comprises a vacuum chamber, a carrier member disposed inside a pipe which communicates with the vacuum chamber, magnetic means installed in a support structure which is moved by a driving means. The carrier member is floated and pulled in its axial direction by magnetic force produced by the magnetic means, whereby an object placed on the tip of a manipulator arm which is connected to the carrier member is transferred in the vacuum chamber. Since the carrier member is floated inside the pipe and moved in its axial direction without contact to the pipe or any other parts, there are no portions inside the pipe which relatively move in contact with each other, and thus fine particles are not generated inside the pipe. This effectively eliminates adhesion of fine particles to objects such as semiconductor devices being transferred in a vacuum chamber.Type: GrantFiled: September 19, 1988Date of Patent: March 12, 1991Assignee: Seiko Seiki Kabushik KaishaInventors: Zinichiro Oshima, Kiyoshi Uchiyama, Ikuo Nanno
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Patent number: 4969252Abstract: The automated magnetic tape drive read/write head module assembly apparatus enables a worker to completely assemble and align the read/write head module in a single step process. A read/write head assembly fixture that securely holds the rectangular-shaped read/write head frame in a fixed position. A read head and write head alignment tool is pivotally attached to the read/write head assembly fixture for magnetically suspending the read head and write head in the rectanglar-shaped opening in the read/write head frame in a predetermined position. A brass shield loader apparatus automatically places a brass shield between the suspended read and write heads. The alignment tool includes an aperture such that the worker can view the transducing gaps on the read head and the write head for alignment purposes.Type: GrantFiled: October 24, 1989Date of Patent: November 13, 1990Assignee: Storage Technology CorporationInventor: Germano DiGregorio
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Patent number: 4951240Abstract: In an electronic part mounting system a printed circuit board is conveyed by a conveyor belt to a predetermined position. The side edges of the printed circuit board are retained by retainers to correct any deformation of the printed circuit board. Consequently, one pair of positioning patterns disposed on the surface of the printed circuit board suffices for the mounting operation of components for the printed circuit board.Type: GrantFiled: June 5, 1989Date of Patent: August 21, 1990Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Masahiro Fukino
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Patent number: 4893403Abstract: A method of aligning integrated circuit chips on a substrate, such as a circuit board, for joinder by means of solder bumps. A stencil mask forms a transfer plate with holes in the same locations as solder bumps on the circuit board. The transfer plate is used to lift integrated circuit chips with metal contact regions loosely seated in holes in another mask, forming a die array plate. Vacuum is applied behind the transfer plate to pick up chips which have been seated on the die array plate. The chips are then moved over the circuit board and deposited onto the solder bumps previously formed and then joined thereto. The transfer plate and the die array plate have hole patterns in the same locations as yet another stencil mask, used for solder deposition in forming the solder bumps.Type: GrantFiled: April 15, 1988Date of Patent: January 16, 1990Assignee: Hewlett-Packard CompanyInventors: Bruce Heflinger, Kevin Douglas
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Patent number: 4854036Abstract: The apparatus and method for assembling magnetic tape drive read/write head modules of the present invention uses an assembly fixture that enables a worker to completely assemble and align the read/write head module in a single step process. This is accomplished by providing an assembly fixture that securely holds the rectangular shaped read/write head frame in a fixed position. A read head and write head alignment tool is pivotally attached to the assembly fixture for magnetically suspending the read head and write head in the rectangular shaped opening in the read/write head frame in a predetermined position. This alignment tool includes an aperture such that the worker can view the transducing gaps on the read head and the write head for alignment purposes. Two sets of threaded rods are included in this assembly apparatus to modify the lateral position of the read head and the write head such that the transducing gaps on these two heads are in exact alignment with respect to each other.Type: GrantFiled: August 12, 1988Date of Patent: August 8, 1989Assignee: Storage Technology CorporationInventor: Germano DiGregorio
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Patent number: 4841629Abstract: An apparatus for weaving a wire through magnetic cores of a memory matrix include a housing accommodating a shaft connected to a rotation drive and having an axial passage and a cavity in its central portion, the interior of the cavity accommodating a spool of wire rotatable about its own axis and about an axis perpendicular to the shaft. The spool is provided with a step electric motor rigidly affixed on the shaft after the spool. At the side opposite to the arrangement of the step electric motor the housing accommodates a pneumatic transport unit having a central passage to allow the wire therethrough arranged in line with the axial passage of the shaft, walls of a guide having passages for feeding compressed gas to and discharging it from the central passage.Type: GrantFiled: August 6, 1987Date of Patent: June 27, 1989Inventors: Algimantas Y. Fedaravichjus, Algis A. Kazla, Klemensas K. Rimshyalis, Kazimeras M. Ragulskis
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Patent number: 4791720Abstract: The apparatus includes a housing accommodating, in succession of the process procedures, a mechanism for moving and separating magnetic cores and a magnetic head of a unit for orientating the magnetic cores above which there are disposed coordinate lines having the magnetic cores threaded thereon. The mechanism for moving and separating the magnetic cores includes distribution and guide combs spaced from each other and having teeth thereof facing the side of the coordinate lines. Arranged after the guide comb before the magnetic head is a comb for separating the magnetic cores, teeth of this comb having a bevel facing the side of the guide comb. Disposed in close proximity to the coordinate lines is a unit for pneumatically conveying the magnetic cores. All the combs and magnetic head rest in planes perpendicular to the plane of arrangement of the coordinate lines and are turned relative to these lines at an angle other than 90.degree.. The housing accommodates a programming mechanism with a control unit.Type: GrantFiled: August 14, 1987Date of Patent: December 20, 1988Assignee: Kaunasskii Politekhnicheskii InstitutInventors: Algimantas J. Fedaravichjus, Antanas L. Sudintas, Vladimir S. Kondratiev, Kazimeras M. Ragulskis
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Patent number: 4782581Abstract: A method and apparatus for placing a ferrite core in the slot of a pad of a ferrite head. A circular magnet is mounted below a non magnetic table on a slider slidable along a line. The pad is clamped on the table with its slot exposed and aligned along the line and the center of the magnet. When the ferrite core is placed on the table near the magnet, it stands on edge, aligned along a radial line of flux from the magnet. As the magnet is slid towards the slot, the core follows the center of the magnet, aligned along the centerline of the slot following the radial line of flux. The core slides into the slot and is thereafter bonded to the pad.Type: GrantFiled: February 11, 1988Date of Patent: November 8, 1988Assignee: Magnetic Peripherals Inc.Inventors: Marat G. Katz, Gino E. Gori
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Patent number: 4748738Abstract: Apparatus for assembling a pair of high strength magnets and the common pole piece into a unit for use in a disk drive includes a bed with a channel in which the magnets can slide or translate, and a stop centrally located in the channel to prevent execessive impact between the magnets as they slide under the force of mutual attraction toward each other. A recess in the bottom of the channel below the stop is adapted to receive the pole piece, and the attractive force between the pole piece and the magnets firmly attaches the magnets to the pole piece in the desired location after they have been properly positioned with respect to the pole piece by interaction of the stop and channel walls with the magnets.Type: GrantFiled: July 21, 1987Date of Patent: June 7, 1988Assignee: Magnetic Peripherals Inc.Inventor: Sham S. Nayar
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Patent number: 4704792Abstract: In an electronic component mounting apparatus comprises a component feeding section including a feeding table unit loaded with several types of electronic components which feeding table unit is adapted to laterally reciprocate on a base, and stopping at a predetermined position thereby to feed the components continuously to a transfer mechanism, the transfer mechanism for absorbing the electronic components and mounting them on a board on an X-Y table on the other side, the X-Y table fixing and stopping the board to a predetermined position, and a board transport section for transporting the board onto the X-Y table for delivering the board having the electronic components mounted thereon, a component feeding apparatus wherein the component feeding table unit of the component feeding section is divided into a plurality of feeding tables each adapted to be moved individually on a straight line by a drive mechanism, the apparatus further comprising means for moving the table to a predetermined position in opposType: GrantFiled: April 17, 1986Date of Patent: November 10, 1987Assignee: Hitachi, Ltd.Inventors: Masato Itagaki, Katsuaki Kikuchi, Susumu Nakayama, Yoshio Haeda, Takashi Kawakami
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Patent number: 4625393Abstract: A method and associated fixture for magnetically attracting and holding back-bar to respective magnetic core-leg portions of a typical magnetic slider assembly. A plurality of embodiments constructed in accordance with different fabrication techniques are described.Type: GrantFiled: June 18, 1984Date of Patent: December 2, 1986Assignee: Burroughs CorporationInventor: Otto Fuchs
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Patent number: 4587721Abstract: A method of assembling a rotatable assembly. A set of generally arcuate magnet material elements are moved toward assembly positions with respect to a circumferential surface of a rotatable member. During this movement, the positions of at least some of the magnet material elements are adjusted generally circumferentially about the circumferential surface of the rotatable assembly to establish at least generally equal gaps between adjacent opposed ones of a pair of opposite marginal edges on the magnet material elements defining the arcuate lengths thereof, respectively. Apparatus for assembling a rotatable assembly and a method of operating such apparatus are also disclosed.Type: GrantFiled: July 13, 1984Date of Patent: May 13, 1986Assignee: General Electric CompanyInventor: Alexander Muller
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Patent number: 4586244Abstract: A method of operating apparatus for assembling a rotatable assembly adapted for use in a dynamoelectric machine. In this method, a set of cams are drivingly engaged with a set of cam followers on a set of holders for a set of magnet material elements to move the holders toward assembly positions spacing the inner arcuate surfaces of the magnet material elements within a preselected spatial range from a circumferential surface of at least one rotatable member of the rotatable assembly with the at least one rotatable assembly being arranged in a preselected located position in the apparatus. Apparatus is also disclosed.Type: GrantFiled: June 1, 1984Date of Patent: May 6, 1986Assignee: General Electric CompanyInventor: Alexander Muller
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Patent number: 4510685Abstract: Magnetic pins preswaged at an off-center point along their length are assembled into a printed circuit board by energizing a pair of electromagnets, disposed one above and the other beneath the circuit board, to cause the pins scattered over a template to become erect. This results in some of the pins being disposed with their shanks protruding through the holes in a magnetic plate disposed below the circuit board while others of the pins pass through the circuit board but do not protrude below the magnetic plate. Increasing the energization of the upper magnet causes the non-protruding pins to be ejected from the circuit board. Subsequent deenergization of the upper magnet results in further pins becoming disposed with their shanks protruding through the magnetic plate. The energization cycle of the magnets is repeated until the circuit board contains a pattern of pins defined by the template with all the pins oriented so that they protrude through the magnetic plate.Type: GrantFiled: December 19, 1983Date of Patent: April 16, 1985Assignee: International Business Machines CorporationInventor: Richard Chu
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Patent number: 4501063Abstract: The magnet insertion apparatus includes a first passageway along which magnets are fed. Arranged in communication with the first passageway, and at right angles to it, is a second passageway. A transport blade, reciprocably mounted in the second passageway, displaces the leading magnet to a position in a third passageway disposed parallel to and offset from the first passageway. A drive rod, reciprocably mounted in the third passageway pushes the magnet into a stylus arm held in alignment with the third passageway. According to a further aspect of the invention, the third passageway is provided with a guideway for accurately guiding the magnets. The insertion machine is additionally equipped with a reciprocably-mounted tucking element to tuck the magnets into the guideway.Type: GrantFiled: June 29, 1983Date of Patent: February 26, 1985Assignee: RCA CorporationInventor: Ronald K. McNeely
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Patent number: 4449282Abstract: First components such as lids (9) are assembled to second components such as electronic chip carriers (10). Each lid (9) has an external surface opposite a first mating face and each carrier (10) has a second mating face complementary with the first mating face of the lid (9). An assembly station contains a first frame (30) having first walls (31-35) for confining and first ledges (37-38) for supporting a lid (9). Frame (30) has an advantageous peripheral opening (39) suitable for passing therethrough portions of devices for transferring lids (9). Preferably such stations (25) are established in an array suitable for access by an array of lids (9) transferred by a first device (35). A first magazine (70) holds files of lids (9) with external surfaces of leading ones in an array for contact, pickup and transfer.Type: GrantFiled: August 18, 1982Date of Patent: May 22, 1984Assignee: AT&T Technologies, Inc.Inventors: Bruce C. Abraham, Charles R. Fegley, Jerry C. Hurst
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Patent number: 4413405Abstract: A method for fitting magnetic wedges which comprises steps of passing a current through a stator winding on a stator core of an electric rotary machine to produce magnetic flux passing through slot openings, successively forcing the magnetic wedges in the slot openings while keeping the winding energized to maintain the magnetic wedges in predetermined positions in the slot openings, and impregnating varnish into the stator core with the slot openings fitted with the magnetic wedges and with the stator winding kept energized, and an apparatus for embodying the method.Type: GrantFiled: October 29, 1981Date of Patent: November 8, 1983Assignee: Tokyo Shibaura Denki Kabushiki KaishaInventors: Hiroshi Doke, Kazunobu Itomi, Kenshi Ishihara
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Patent number: 4408753Abstract: Paramagnetic articles such as a stem (14) and an armature (17) are placed into mutual coextensive alignment with a gap (19) of a predetermined width between adjacent portions of such articles. To repetitively establish the predetermined gap between successive groups of such articles, a first of such articles is guided tangentially into a magnetic field. A resulting force on such article (14) draws the article against a first stop surface. The article becomes magnetically polarized, such that when the second article, such as the armature (17) is guided into coextensive alignment with the first article, the second article becomes attracted to the first article to be drawn against a stop surface opposite to and spaced from the first stop surface by a dimension equal to the predetermined gap width.Type: GrantFiled: February 3, 1983Date of Patent: October 11, 1983Assignee: Western Electric Company, Inc.Inventors: James S. Chapman, Anthony Tedeschi
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Patent number: 4399988Abstract: A printed circuit board assembly fixture capable of securing the circuit board in a fixed relation to the inserting element of an electrical component inserting machine relies on the staking anvil of the assembly to precisely locate the circuit board and electromagnets to lock the circuit board in position for insertion of electrical components.Type: GrantFiled: November 23, 1981Date of Patent: August 23, 1983Assignee: E. I. Du Pont de Nemours and CompanyInventor: George T. De Shong
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Patent number: 4398337Abstract: A continual crimper for pressing an electric wire to an electric terminal, which is belted intermittently one by one, to make the wire fixed to the terminal respectively. The crimper is so constructed that the intermittently belted terminals may be transferred to its position of the next pressing step at a predetermined distance in relation with the returning action of a movable die which presses the terminal.Type: GrantFiled: October 27, 1981Date of Patent: August 16, 1983Assignee: Nichifu Terminal Industries Co., Ltd.Inventors: Yuji Yamaguti, Hideo Miyata
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Patent number: 4387508Abstract: Two spaced stacks of magnetically soft E-cores, (17 and 18) are supported in spaced relation by pairs of magnets (38 and 39) on opposite sides of each stack. A pair of shuttles (41 and 47) move alternately toward and away from each other and under the stacks to pick off the lower core in each stack. The shuttles alternately advance the cores into a transformer frame (10) where a pair of magnets (66 and 67) are effective to hold the cores in an assembled position within the frame while the shuttles return for another E-core feeding operation. Entry of the cores into the frame is facilitated by a pair of rotating drums (71 and 72) having staggered arrays of magnets (78 and 79) which act to rapidly vibrate the E-cores (17 and 18) and thus prevent lodging of the cores against the frame.Type: GrantFiled: February 26, 1981Date of Patent: June 14, 1983Assignee: Western Electric Company, Inc.Inventor: Kenneth L. Wyatt
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Patent number: 4383357Abstract: Paramagnetic articles such as a stem (14) and an armature (17) are placed into mutual coextensive alignment with a gap (19) of a predetermined width between adjacent portions of such articles. To repetitively establish the predetermined gap between successive groups of such articles, a first of such articles is guided tangentially into a magnetic field. A resulting force on such article (14) draws the article against a first stop surface. The article becomes magnetically polarized, such that when the second article, such as the armature (17) is guided into coextensive alignment with the first article, the second article becomes attracted to the first article to be drawn against a stop surface opposite to and spaced from the first stop surface by a dimension equal to the predetermined gap width.Type: GrantFiled: April 16, 1981Date of Patent: May 17, 1983Assignee: Western Electric Co., Inc.Inventors: James S. Chapman, Anthony Tedeschi
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Patent number: 4316605Abstract: A magnetic bubble memory packaging tool comprising a stationary base having a bias magnet replaceable mounting arm which cooperates with a moveable bias magnet replaceable mounting arm on a moveable base, the latter being coupled to move relative to said stationary base by a spring biased screw arrangement. With the bias magnets positioned on opposite sides of the mounting arms and with the yoke positioned to a compass the arms, and the bias magnets, rotation of the screw increases the bias of the spring urging the arms and magnets in a direction away from each other and into engagement with the inside walls of the yoke. The spring bias is a measure of the pressure with which the bias magnets engage the yoke for bonding and the screw is calibrated so as to select the bias of the spring.Type: GrantFiled: December 26, 1979Date of Patent: February 23, 1982Assignee: Burroughs CorporationInventors: Clyde L. Zachry, William C. McCutchen
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Patent number: RE33780Abstract: In an electronic component mounting apparatus comprises a component feeding section including a feeding table unit loaded with several types of electronic components which feeding table unit is adapted to laterally reciprocate on a base, and stopping at a predetermined position thereby to feed the components continuously to a transfer mechanism, the transfer mechanism for absorbing the electronic components and mounting them on a board on an X-Y table on the other side, the X-Y table fixing and stopping the board to a predetermined position, and a board transport section for transporting the board onto the X-Y table for delivering the board having the electronic components mounted thereon, a component feeding apparatus wherein the component feeding table unit of the component feeding section is divided into a plurality of feeding tables each adapted to be moved individually on a straight line by a drive mechanism, the apparatus further comprising means for moving the table to a predetermined position in opposType: GrantFiled: November 13, 1989Date of Patent: December 31, 1991Assignee: Hitachi, Ltd.Inventors: Masato Itagaki, Katsuaki Kikuchi, Susumu Nakayama, Yoshio Haeda, Takashi Kawakami