Magnet- Or Solenoid-actuated Tool Patents (Class 83/575)
  • Patent number: 9193264
    Abstract: A method for determining a reference value for controlling a vehicle's speed by a vehicle control system is described. The method includes: making a first prediction and a second prediction of the speed along a horizon, the first prediction based on an engine torque that retards the vehicle as compared with a conventional cruise control, and the second prediction based on an engine torque that accelerates the vehicle as compared with the conventional cruise control; comparing the first prediction and second prediction, respectively, with a lower limit value and/or an upper limit value, which delineate a speed range within which the speed is to be maintained; and determining the reference value based on at least one of the respective comparisons and the first prediction and second prediction so that the set speed is within the speed range bounded by the lower and upper limit values.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: November 24, 2015
    Assignee: SCANIA CV AB
    Inventors: Oskar Johansson, Maria Södergren, Fredrik Roos
  • Publication number: 20140290459
    Abstract: A cutter, detachably attachable to a support member, includes a shaft made of a resin. The cutter has a smaller-diameter portion and a larger-diameter portion formed integrally with the shaft. The smaller-diameter portion is rotatably supported by a bearing located on the support member. The larger-diameter portion has a proximal end surface abutting on an end surface of the bearing, with a result that the cutter is locked in a state where an axial position of the cutter relative to the support member is immovable. The cutter includes a flat blade located on a first end as a distal end of the larger-diameter portion. The flat blade cuts an object to be cut. The cutter includes a metal member which can be attracted by a magnet located on the support member. The metal member is located on a second end as a distal end of the smaller-diameter portion.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Katsuhisa Hasegawa, Shinya Fujihara
  • Publication number: 20090173203
    Abstract: The present invention relates to a trimming apparatus operable in an auto mode or a manual mode. The trimming apparatus include a cutter frame, a transmission belt, a motor, a clamping element, a switch and a mode-switching unit. By adjusting the mode-switching unit to control clamping element to clamp or release the transmission belt, the trimming apparatus 100 is operated in either the auto mode or the manual mode.
    Type: Application
    Filed: June 2, 2008
    Publication date: July 9, 2009
    Applicant: PRIMAX ELECTRONICS LTD.
    Inventors: Yung-Tai Pan, Shin-Fu Lin
  • Publication number: 20080236352
    Abstract: An apparatus for cutting a series of medicine packets discharged from an automatic medicine packaging machine into individual doses to automatically load the cut medicine packets on a loading device is disclosed. The apparatus includes a feeding device for feeding the series of medicine packets from the upper side of a main body to a stepped part at the other side of the main body, a cutting device for cutting the series of medicine packets by one medicine packet at the stepped part, a loading device for loading the medicine packets, cut by the cutting device and dropped to the stepped part, by a predetermined number, and a controller including a position sensor for detecting a position of the hole in the medicine packet and controlling the feeding device and the cutting device based on the position information of the hole of the medicine packets inputted from the position sensor.
    Type: Application
    Filed: May 12, 2008
    Publication date: October 2, 2008
    Applicant: JVM CO., LTD.
    Inventor: Jun-ho KIM
  • Patent number: 7331265
    Abstract: An electromagnetically driven punch press is described. The punch press has an engine plate and a die set and a ram between the engine plate and die set. The engine plate has an assembly fixed thereto having a solenoid with windings that create a magnetic field when a current is applied. The engine plate has a feedback means positioned on the engine plate to provide real-time data on the position and velocity of the ram with respect to said engine plate.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: February 19, 2008
    Assignee: Winset Technologies L.L.C.
    Inventor: Philip W. Settepani
  • Patent number: 6779441
    Abstract: Disclosed is an automatic metal printer which prints a camera-photographed and computer-processed image on a surface of a hard material, such as a metal sheet, through a dot matrix printing type method wherein brightness of the printed image is expressed in accordance with density of dots in the dot matrix formed on the surface of the hard material. The automatic metal printer includes a platform which reciprocates forward and rearward in a lower portion of a body by a motor-operated first ball screw. A saddle is installed at a position above the platform so as to reciprocate to the left and right in the body by a motor-operated second ball screw. A dotter is vertically installed on the saddle so as to dot the upper surface of the hard material seated on the platform to print a desired image.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: August 24, 2004
    Inventor: Sung Boung Jun
  • Publication number: 20040149106
    Abstract: A microtome comprising a knife holding device for a cutting element (16) and comprising a specimen holding device (12) for a specimen which is to be cut thin is described. Associated with the specimen holding device (12) for performing a cutting movement is a first drive device (18) and associated with the specimen holding device (12) or the knife holding device is a second drive device (38) for performing a feed movement. A sender (20) is associated with the first drive device (18). The sender (20) is connected with an electronic control means (28). Control of the first drive device (18) is effected by means of a first operating element (28). Control of the second drive device (38) is effected by means of a second operating element (44). To achieve an excellent degree of operating comfort for the microtome the first operating element (28) has two control modes, namely a standard mode and a second mode.
    Type: Application
    Filed: April 5, 2004
    Publication date: August 5, 2004
    Inventor: Hans-Jurgen Hess
  • Publication number: 20040099107
    Abstract: In a resonating assembly, a beam having a pickup thereon is positioned proximate to a magnet which passes across the pick up at a predetermined frequency. The passage of the magnet across the pick up establishes an alternating magnetic field that in turn causes the beam and pick up to vibrate. A blade is mounted on the beam and vibrates therewith so that when the blade is brought into engagement with a layer of sheet type work material the vibratory amplitude of the blade causes the blade to cut through the material as it is moved in engagement therewith.
    Type: Application
    Filed: July 28, 2003
    Publication date: May 27, 2004
    Applicant: GERBER TECHNOLOGY, INC.
    Inventors: Darryl C. Stein, Kenneth Lewis Harstine, Matthew L. Reardon
  • Patent number: 6651538
    Abstract: Disclosed is an apparatus for cutting a specimen with a blade that moves forward with oscillation. The apparatus is free from vertical wobbling of the blade even after a long period of use, so that the cutting is carried out without killing cells present in the specimen. The blade is attached to a movable body that is coupled to a base with a resilient coupler. The base is provided with a driving electromagnet, and the movable body is provided with a permanent magnet. Thus, the movable body oscillates by supplying a control signal to the driving electromagnet.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: November 25, 2003
    Assignee: Dosaka EM Co., Ltd.
    Inventors: Isao Tamura, Sumio Nakajima
  • Patent number: 6612215
    Abstract: A cutting machine for cutting a belt-shaped sheet into a given shape includes a sheet feeder, a Y-axis shaft, a carriage, a sub-shaft, two connecting frames, and an elevating device. The sheet feeder moves the belt-shaped sheet in the X-axis direction. The Y-axis shaft is disposed in the Y-axis direction above the cutting sheet. The carriage mounts a cutter on a leading end thereof and is slidably disposed on the Y-axis shaft. The sub-shaft is disposed parallel to the Y-axis shaft and penetrates the carriage on the leading end side of the carriage. The connecting frames connects and fixes the Y-axis shaft and the sub-shaft to each other. The elevating device moves up and down the sub-shaft to move the cutter up and down in the Z-axis direction with respect to the cutting sheet.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: September 2, 2003
    Assignee: Max Co., Ltd.
    Inventor: Shinichi Takeuchi
  • Patent number: 6598505
    Abstract: A method and apparatus for detecting performance of an apparatus for punching holes in a substrate, ensuring hole quality and/or minimizing or eliminating damage to the films during the hole punching process.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: July 29, 2003
    Assignee: International Business Machines Corporation
    Inventors: Donald W. Henderson, Edward F. Helinski
  • Publication number: 20030101858
    Abstract: Disclosed is an apparatus for cutting a specimen with a blade that moves forward with oscillation. The apparatus is free from vertical wobbling of the blade even after a long period of use, so that the cutting is carried out without killing cells present in the specimen. The blade is attached to a movable body that is coupled to a base with a resilient coupler. The base is provided with a driving electromagnet, and the movable body is provided with a permanent magnet. Thus, the movable body oscillates by supplying a control signal to the driving electromagnet.
    Type: Application
    Filed: November 25, 2002
    Publication date: June 5, 2003
    Inventors: Isao Tamura, Sumio Nakajima
  • Patent number: 6484613
    Abstract: A method of punching a via or through hole in a polymer-metal laminate workpiece in a punch press. The punch press has a punch tool, a driver coil for driving the punch tool through the polymer-metal laminate workpiece, and a stopper for stopping the punch travel of the punch tool and mechanically returning the punch tool to its starting position. The method includes the steps of applying an electrical current pulse through the driver coil to electromagnetically drive the punch downward to and through the workpiece, and then elastically colliding the punch tool with the stopper to stop and return the punch tool on an upward return stroke. Subsequently a second, braking pulse is applied through the driver coil to electromagnetically brake the punch. The second electrical current is applied after the start of the punching pulse, for a time and magnitude sufficient to brake the punch press.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: November 26, 2002
    Assignee: International Business Machines Corporation
    Inventors: Ho Chong Lee, Ganesh Subbarayan, Paul Gerard Wilkin
  • Publication number: 20020121169
    Abstract: In a preferred embodiment, a sealing tape dispenser, includes a retracting tape guide which is mechanically linked to an access cover so as to be automatically retracted upon cover opening to allow larger tape rolls to be loaded and to enhance unobstructed access to the machine. In a second preferred embodiment, a sealing tape dispenser, includes a cutting blade lift and interlock mechanism as to assist in clearing tape jams by mechanically lifting the cutting blade to a raised position whereby unobstructed access is gained to the tape path and an interlock is disabled so as to prevent further tape dispenser operations while the cutting blade is in a raised position.
    Type: Application
    Filed: February 14, 2002
    Publication date: September 5, 2002
    Inventor: George J. LeMoine
  • Patent number: 6389941
    Abstract: A rotary knife incorporates the use of an electronically controlled, active damping system to control vibrations of knife cylinders. The system preferably uses pairs of electromagnetic actuators to provide opposing pulling forces on a ferromagnetic portion of a lever arm that is mechanically coupled to the stationary support shaft for the knife cylinder. Vibration sensors, preferably accelerometers, are used to monitor vibrations of the respective knife cylinders. A digital signal processor implementing a state space control system controls the electromagnetic actuators to actively cancel vibration energy in the knife cylinders.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: May 21, 2002
    Assignee: Marquip, LLC
    Inventor: James R. Michler
  • Publication number: 20010049989
    Abstract: A cutting machine for cutting a belt-shaped sheet into a given shape includes a sheet feeder, a Y-axis shaft, a carriage, a sub-shaft, two connecting frames, and an elevating device. The sheet feeder moves the belt-shaped sheet in the X-axis direction. The Y-axis shaft is disposed in the Y-axis direction above the cutting sheet. The carriage mounts a cutter on a leading end thereof and is slidably disposed on the Y-axis shaft. The sub-shaft is disposed parallel to the Y-axis shaft and penetrates the carriage on the leading end side of the carriage. The connecting frames connects and fixes the Y-axis shaft and the sub-shaft to each other. The elevating device moves up and down the sub-shaft to move the cutter up and down in the Z-axis direction with respect to the cutting sheet.
    Type: Application
    Filed: June 8, 2001
    Publication date: December 13, 2001
    Applicant: Max Co. Ltd.
    Inventor: Shinichi Takeuchi
  • Patent number: 6305258
    Abstract: A method and apparatus for detecting performance of an apparatus for punching holes in a substrate, ensuring hole quality and/or minimizing or eliminating damage to the films during the hole punching process.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: October 23, 2001
    Assignee: International Business Machines Corporation
    Inventors: Donald W. Henderson, Edward F. Helinski
  • Patent number: 6298761
    Abstract: An apparatus for fabricating holes in a thin film has an elongated holding block for holding a column of electromagnetic driving coils. The holding block acts as a single unit, and is magnetically attached to a punch diebar. The magnetic attraction between the holding block and diebar provides easy assembly and disassembly of the parts.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: October 9, 2001
    Assignee: International Business Machines Corporation
    Inventors: David E. Houser, Candido C. Tiberia, James A. Veasaw
  • Patent number: 6247388
    Abstract: An application for periodically applying a controllable force to a movable part has a force applying member, particularly for cutting a web, and a driver for driving the force applying member. The driver is controlled by a force-indicating signal produced by a lock-in amplifier to which a force-responsive signal and a reference signal are inputted. The lock-in amplifier operates to eliminate or reduce any noise present in the force-responsive signal.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: June 19, 2001
    Assignee: Molins PLC
    Inventors: David Christopher Miller Carter, Peter Nicholas Collett
  • Patent number: 6230598
    Abstract: The present invention pertains to an automatic cutting device which can be utilized for cutting woody plant material (e.g., stem, stalk). The subject device can comprise a housing having a fixed blade attached thereto. A movable blade, pivotally connected to the fixed blade, can be attached to an activating device for movement. The activating device is preferably a pushrod activated by an electrical solenoid which produces the force necessary to push the movable blade against the fixed blade in a cutting action. A spring can be used to return the movable blade to the open position between cuts. The solenoid can be activated by a switching means which is triggered by a lever device located in close proximity to the cutting portion of the blades. In a specific embodiment, as the stem is lowered, the lever is depressed which triggers the switch to activate the solenoid. The solenoid forces the push rod to push the movable blade against the fixed blade in a single cutting action to cut the stem.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: May 15, 2001
    Inventor: David J. Ressler
  • Patent number: 6032558
    Abstract: A rotary knife incorporates the use of an electronically controlled, tuned mass active damping system to control vibrations of the knife cylinder. The system preferably uses one or more electromagnetic actuators to provide force on a tuned mass which is mechanically coupled to the knife cylinder. Vibration sensors, preferably accelerometers, are used to monitor vibrations of the respective knife cylinders and tuned masses. A digital signal processor implementing a state space control system controls the electromagnetic actuators to remove vibration energy from the system. An active damping system in accordance with the invention is more effective in removing vibration energy than passive systems, especially in heavy-duty applications.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: March 7, 2000
    Assignee: Marquip, Inc.
    Inventor: James R. Michler
  • Patent number: 5924350
    Abstract: Hole punching apparatus for punching holes in thin sheet material and having a punch mounted for reciprocating movement. The punch includes a punch stem, and an elastomeric bumper mounted on the punch stem. The bumper acts as a shock absorber when the punch is moved in a first direction to punch a hole in the thin sheet material and eliminates collision of metallic parts as the punch reaches the end of its stroke.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: July 20, 1999
    Assignee: International Business Machines Corporation
    Inventor: Edward F. Helinski
  • Patent number: 5924618
    Abstract: A magnetic device (22, 222 or 322) for scoring glass (150) and a method for using the device to score glass. The system (100) for use with the device includes a scoring board (12), a scoring guide (18 or 218) and the device. The scoring guide has a smooth, flat outer surface (18E or 218C) and is constructed of either a magnetic or magnetically attractable material. The device includes a body (24 or 325) and a blade unit (26). The body has a smooth flat end and is preferably magnetic. Alternately, the flat end is constructed of a magnetically attractable material. To score glass, the glass sheet is placed on the scoring board and the guide is mounted on the board over the glass. The guide is mounted adjacent and parallel to the line to be scored on the glass. The flat smooth end of the device is mounted on the flat smooth outer surface of the guide so that the blade (26B) of the blade unit is aligned with the line to be scored.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: July 20, 1999
    Inventor: Donald A. Doak
  • Patent number: 5905352
    Abstract: Dimpling of a workpiece by rebounding of a magnetic repulsion punch mechanism, when operated at high punching rates, is avoided by application of a damping pulse at a point at or subsequent to a mid-point of a return stroke of the punch from the workpiece and preferably within the last 10% of the return stroke. This damping pulse is preferably a fraction of the pulse width and of approximately the same amplitude as a driving pulse applying kinetic energy to the punch for causing punching of the workpiece. At high punching rates the kinetic energy of the return portion of a punching stroke is substantially determined by elastic rebounding of the punch from a guide bushing. The removal of kinetic energy during the return portion of the stroke allows the return of the punch to a position close to a rest position during a very short interval with small overshoot under control of mechanical damping.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: May 18, 1999
    Assignee: International Business Machines Corporation
    Inventors: William Dale Carbaugh, Jr., Mark Joseph LaPlante, David Clifford Long, Karl Friedrich Stroms, Christopher David Setzer
  • Patent number: 5868055
    Abstract: A continuous paper web is severed transversally in between the transportation cycles at the paper's maximum allowable rate of feed. The transverse cutter device has a stationary bottom blade 6 and a driven upper blade 5 fixed to or integral with a permanent magnet 7a, and a linear motor is used as the drive for the upper blade. The motor stator 7cis fastened to a carrier 4, and the driven blade undergoes reciprocating or vibratory strokes within a stator slot.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: February 9, 1999
    Inventor: Walter Suter
  • Patent number: 5726568
    Abstract: Dimpling of a workpiece by rebounding of a magnetic repulsion punch mechanism, when operated at high punching rates, is avoided by application of a damping pulse at a point at or subsequent to a mid-point of a return stroke of the punch from the workpiece and preferably within the last 10% of the return stroke. This damping pulse is preferably a fraction of the pulse width and of approximately the same amplitude as a driving pulse applying kinetic energy to the punch for causing punching of the workpiece. At high punching rates the kinetic energy of the return portion of a punching stroke is substantially determined by elastic rebounding of the punch from a guide bushing. The removal of kinetic energy during the return portion of the stroke allows the return of the punch to a position close to a rest position during a very short interval with small overshoot under control of mechanical damping.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 10, 1998
    Assignee: International Business Machines Corporation
    Inventors: William Dale Carbaugh, Jr., Mark Joseph LaPlante, David Clifford Long, Karl Friedrich Stroms, Christopher David Setzer
  • Patent number: 5410233
    Abstract: Dimpling of a workpiece by rebounding of a magnetic repulsion punch mechanism, when operated at high punching rates, is avoided by application of a damping pulse at a point at or subsequent to a mid-point of a return stroke of the punch from the workpiece and preferably within the last 10% of the return stroke. This damping pulse is preferably a fraction of the pulse width and of approximately the same amplitude as a driving pulse applying kinetic energy to the punch for causing punching of the workpiece. At high punching rates the kinetic energy of the return portion of a punching stroke is substantially determined by elastic rebounding of the punch from a guide bushing. The removal of kinetic energy during the return portion of the stroke allows the return of the punch to a position close to a rest position during a very short interval with small overshoot under control of mechanical damping.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: April 25, 1995
    Assignee: International Business Machines Corporation
    Inventors: William D. Carbaugh, Jr., Mark J. LaPlante, David C. Long, Karl F. Stroms, Christopher D. Setzer
  • Patent number: 5350898
    Abstract: An apparatus for cutting fabrics and the like includes a workbench on which the fabric is placed, a first movable carriage freely movable in one direction along one side of the work bench, and a second movable carriage mounted on the first carriage which is freely movable in a direction perpendicular to the direction of movement of the first carriage. A cutter including a heated tip, is mounted on the second carriage, and the heated tip is displaceable into contact with a fabric for cutting a desired mark or pattern out of the fabric. The apparatus additionally includes an absorbent member for cleaning the heated tip after a cutting operation. The apparatus permits an automatic and efficient cutting operation for marks and can be manufactured economically.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: September 27, 1994
    Assignee: Kabushiki Kaisha Tokyo Horaisha
    Inventor: Shigeji Higashiguchi
  • Patent number: 5320013
    Abstract: In blanking a metal foil on a press comprising a pair of dies, a pair of punches, and a pair of piezoelectric actuators for driving the punches with are all arranged above and below the metal foil, the punches are vertically vibrated by the piezoelectric actuators, so that, while the punches being held abutted against both surfaces of the metal foil clamped between the dies, a half blanking operation and a reverse blanking operation are carried out alternately, whereby the metal foil is cut along the shearing surface through low cyclic fatigue without formation of burrs.
    Type: Grant
    Filed: November 17, 1992
    Date of Patent: June 14, 1994
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Mitsuharu Nonami, Yukinori Kawamura, Kozo Matsumoto, Norikatsu Matsumoto, Fumisato Niino
  • Patent number: 5275077
    Abstract: A method of forming a perforated cut line using a cutting plotter capable of accurately and rapidly forming a sheet with a perforated cut line along a cut line which is predetermined on a sheet and along which the sheet is to be cut. A cutter pressure at which a cutter is pressed onto the sheet is repeatedly reduced for a micro period of time at predetermined time intervals to form the sheet with a perforated cut line consisting of perforations and unperforated parts defined between the perforations in an intermittent manner.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: January 4, 1994
    Assignee: Mimaki Engineering Co., Ltd.
    Inventor: Hisayuki Kobayashi
  • Patent number: 5262617
    Abstract: An apparatus for cutting fabrics and the like includes a workbench on which the fabric is placed, a first movable carriage freely movable in one direction along one side of the work bench, and a second movable carriage mounted on the first carriage which is freely movable in a direction perpendicular to the direction of movement of the first carriage. A cutting means, including a heated tip, is swingably mounted on the second carriage, and the heated tip is swingable into contact with the fabric for cutting a desired mark or pattern out of the fabric. The apparatus additionally includes an absorbent member for cleaning the heated tip after a cutting operation. The apparatus permits an automatic and efficient cutting operation for marks and can be manufactured economically.
    Type: Grant
    Filed: August 17, 1990
    Date of Patent: November 16, 1993
    Assignee: Kabushiki Kaisha Tokyo Horaisha
    Inventor: Shigeji Higashiguchi
  • Patent number: 5245904
    Abstract: An electromagnetically-driven punch press having adjustable anti-skid supports for the ball bearings and ball cages of the ball-bearing bushings which carry the movable tool for preventing downward skidding of these balls and their cages when the moving tool punches down against the work material. Adjustable resilient cushioning arrests tool travel for minimizing "tool whip" and tool wear at the end of the work stroke.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: September 21, 1993
    Inventor: George M. Meyerle
  • Patent number: 5239904
    Abstract: A punch is disclosed, which can be used with an automatic paper feeder or a plane paper copier for receiving sheet-like members one by one from such machine and forming punched holes in each sheet-like member at a punching position thereof. A punching member is disposed in correspondence to the punching position for effecting punching with a predetermined stroke. A dimensional strain generated in an electrical-to-mechanical conversion element such as a piezoelectric element or a magnetostriction element is transmitted after enlargement by an enlarging member disposed to surround the element through a movable output terminal and an operation transmission lever to the punching member to cause high speed operation thereof in a predetermined stroke range. High quality punched holes free from curved edges or the like difficiency thus can be formed even in a continuous feed state without holding the sheet-like members stationary for a while.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: August 31, 1993
    Assignee: Max Co., Ltd.
    Inventors: Morio Yamaguchi, Takashi Uchida
  • Patent number: 5233895
    Abstract: A punch station for punching ceramic green sheets comprises a magnet plate and two flux guide plates to form the flux field within which a coil of wire resides and acts to cause the punching movement of a punch. The magnet plate allows the placement of adjacent punch stations more closely together than is possible when cylindrical magnets are used since the magnetic material lying between the punch being activated and the punches surrounding the activated punch has an additive effect and produces a more dense flux field than achievable with the cylindrical magnets. The flux guide plates concentrate the flux from the magnet plate into a small gap further increasing flux density in the working gap. The magnet plate overcomes the losses inherent with magnets separated by air gaps.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: August 10, 1993
    Assignee: International Business Machines Corp.
    Inventors: Anthony F. Coneski, Mitchel Waian
  • Patent number: 5222012
    Abstract: A power management circuit for operating a magnetic repulsion punch comprising a storage capacitor arranged to be connected in parallel with an inductive load serving as an operating coil of the magnetic repulsion punch, a means for selectively and temporarily coupling the inductive load to the storage capacitor for forming a resonant circuit, and a means for charging the storage capacitor after each operation.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: June 22, 1993
    Assignee: International Business Machines Corporation
    Inventors: Richard F. Frankeny, Jerome A. Frankeny, Thai Q. Ngo
  • Patent number: 5113736
    Abstract: An electromagnetically-driven punch press has an electromagnetic drive thrust motor comprising a fan-cooled solenoid winding and movable armature mounted in elevated location for isolating the magnetic circuit from the tooling to avoid tool magnetization and isolating winding heat from tooling for stabilizing tool dimensions. Stroke length, "open" height and "shut" height are conveniently adjustable; and tool performance is optimized by adjusting armature-thrust versus travel. Four-way access to tooling enables convenient material feeding and handling, including multi-direction or multi-layer feed. Scrap pieces are freely downwardly ejected. Multiple electromagnetic drives are mountable side-by-side at the same elevation, or they are stackable at multiple levels for increased power or for tailoring force-versus-distance relative to materials being worked. Materials-handling and/or tool-handling robots or pneumatic actuators can be installed on an elevated platform.
    Type: Grant
    Filed: June 26, 1990
    Date of Patent: May 19, 1992
    Inventor: George M. Meyerle
  • Patent number: 5079983
    Abstract: A punch holder has brazed thereon a copper disk and receives a punch extending therethrough. The holder is in registry with an upper punch guide/punch down-stop and has a spring extending therethrough for controlling axial movement of the punch. A lower punch guide and stripper bushing also receive and guide the punch in coaxial alignment therewith. In operation, a magnetically energized coil repulses the disk, which, in turn, imparts downward punching force to the punch with the spring providing restorative force. The disk is fully supported by the punch holder substantially along its radius, thereby preventing distortion. The spring provides constant force over the deflection range, thereby enhancing the punching action while improving reliability and reducing failures. Due to the punch being releasably attached to the punch holder-disk, it may be separately replaced.
    Type: Grant
    Filed: May 8, 1990
    Date of Patent: January 14, 1992
    Assignee: International Business Machines Corporation
    Inventor: Peter H. Bruhn
  • Patent number: 5045009
    Abstract: An apparatus and process for use in the manufacture of a tension-mask color cathode ray tube provides for mechanically severing a waste portion from the useful portion of an in-process foil mask secured to mask-support means extending from a faceplate. The apparatus comprises means for support mask-servering means adjacent ot the mask outside the mask support means, and means for translating the mask-severing means into engagement with the mask to sever the mask from the mask support means adjacent all points along the mask-support means.
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: September 3, 1991
    Assignee: Zenith Electronics Corporation
    Inventors: Lowell A. Cordingley, Lawrence W. Dougherty, Allan D. Kautz, Armando V. Marino
  • Patent number: 4934236
    Abstract: A sheet slicing mechanism includes a rigid frame member supporting a stepper motor coupled to a drive gear. A rotatably supportable rotary member includes a driven gear coupled to the drive gear and is rotatably supported upon the frame. A blade frame having a generally cylindrical configuration is received within the rotary member and is freely movable in the vertical axis. The blade frame supports a cutting blade and a cutting force weight. The rotary member defines a vertical slot which cooperates with an outwardly extending pin in the blade frame to permit the blade frame to be vertically movable with respect to the rotary member while locked thereto as to rotational motion. A solenoid activated lifting means is supported upon the frame and is operable to raise the blade frame to a noncutting position.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: June 19, 1990
    Assignee: AM International Corporation
    Inventor: James F. Gordon
  • Patent number: 4926677
    Abstract: Apparatus and a method for processing work pieces, such as semiconductor lead frames, wherein the apparatus includes a power device such as a solenoid assembly, for driving an upper die into processing relationship to a work piece on a lower die with the stroke of the power device being relatively short, such as in the range of 0 to 0.375 inch. This is achieved by providing a second power device, such as a piston and cylinder assembly, in which the piston rod of the assembly raises the upper die high enough to allow clearance between the dies for the passage of the work piece between the dies, then the second power device is allowed to lower relatively slowly until the upper die is substantially in proximity to the work piece.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: May 22, 1990
    Inventor: Kurt Waldner
  • Patent number: 4909112
    Abstract: A multiple head gang saw has a plurality of moveable saw heads (12, 14) providing variable width cutting, and a single magnetostrictive displacement transducer (40) sensing displacement of all of the saw heads. The transducer sender unit (42) is mounted to a transverse cross beam (10), and a magnetostrictive rod (44) extends from the sender unit along and parallel to the cross beam. A plurality of pairs of electromagnets (62, 64, 87, 89) are mounted to respective saw heads proximate the magnetostrictive rod. Switching circuitry (116) selectively energizes a chosen electromagnet pair and de-energizes the remaining electromagnet pairs such that only the chosen electromagnet pair generates a magnetic field interacting with the signal in the rod from the sender unit, such that the displacement transducer indicates the distance from the sender unit to the chosen electromagnet pair and its respective saw head along the cross beam.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: March 20, 1990
    Assignee: Kohler General Corp.
    Inventor: Bruce C. Rosenthal
  • Patent number: 4872381
    Abstract: A punch apparatus for punching hole patterns in thin sheet material. The apparatus includes a housing having a liquid-cooled cavity therein; a coil mounted in the liquid-cooled cavity; a driver disk made of a highly conductive material mounted in the liquid-cooled cavity, the driver disk mounted adjacent to the coil; a driver button located outside of the liquid-cooled cavity but in communication with the driver disk; and a punch element for perforating thin sheet material aligned with the driver button. Finally, the apparatus includes an electrical source for energizing the coil with a pulse of electrical energy for generating flux linking the driver disk and the coil to repel the driver disk from the coil, thereby translating the driver button and the punch element, causing the punch element to perforate a thin sheet of material.
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: October 10, 1989
    Assignee: International Business Machines Corp.
    Inventor: Karl F. Stroms
  • Patent number: 4831909
    Abstract: Apparatus for slitting a web (50) into narrower webs or strips comprises a plurality of cutters (45, 46), which are movable into engagement with the web to be slit and are carried by cutter holders (4), which are adjustable transversely to the web by positioning means (7). The cutter holders (4) are freely slidably mounted on a common track (2, 3) and are adapted to be fixed in position on said track by clamping or detent means (21, 22), which are adapted to be released by a control device (62). A feeder (7) is provided, which is parallel to the track (2, 3). The cutter holders (4) are adapted to be clamped or to be resiliently locked to said feeder under the control of a control device (62) so as to permit the cutter holders (4) to be displaced by the feeder to their desired positions.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: May 23, 1989
    Assignee: Windmoller & Holscher
    Inventors: Rudolf Peters, Richard Saatkamp
  • Patent number: 4821614
    Abstract: A punch apparatus for punching holes in thin sheet material including a frame, a punch element mounted on the frame for rectilinear movement, which further includes a planar element of conductive material mounted on the punch element, a coil on the frame mounted adjacent to the planar element, a carriage for supporting and positioning the sheet in the path of the punch element, leads connected to a source of electric current to energize the coil, a mechanical arrangement to rebound the punch element, and a programmable apparatus to selectively move the carriage and energize the coil to thereby produce a punched hole pattern in the sheet.
    Type: Grant
    Filed: January 6, 1988
    Date of Patent: April 18, 1989
    Assignee: International Business Machines Corporation
    Inventors: Russell W. Fleet, David C. Long, Karl F. Stroms, Gerhard Weiss
  • Patent number: 4796501
    Abstract: In an apparatus for punching out a part from a workpiece or blank, particularly for punching out a segment from a photograph, for the engagement of the workpiece a punching table is arranged under a punching plate which can be rotated away and lowered in direction x, a punching pattern being placed on the workpiece.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: January 10, 1989
    Inventor: Peter Hagmann
  • Patent number: 4791843
    Abstract: An apparatus for punching holes into sheet materials, and more particularly, a high speed punching apparatus of the so-called bullet punch type for the sequential punching of holes into an advancing web or sheet of paper, plastic or other film material through the intermediary of a high-speed projectile reciprocatively piercing through the material.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: December 20, 1988
    Assignee: Mobil Oil Corporation
    Inventors: Fox J. Herrington, Richard A. Holland
  • Patent number: 4732068
    Abstract: A cutting device is provided for use with a printer having a plurality of movable blades which are disposed in side-by-side relationship and driven in a direction perpendicular to the length of the blade. A plurality of solenoids are provided for driving each movable blade. A spring, which is arranged to be depressed by the movement of the movable blade, applies a pressure to the paper to fix the paper in position before the movable blade reaches the cutting position.
    Type: Grant
    Filed: February 12, 1986
    Date of Patent: March 22, 1988
    Assignee: Omron Tateisi Electronics Co.
    Inventors: Ryoichi Yasuda, Kazutoshi Yamada
  • Patent number: 4730529
    Abstract: A cutting or grooving device for paper or cardboard webs, comprising at least two rotatably driven shafts having at least one tool carrier for a cutting or grooving tool arranged thereon, the tool carrier having at least one radially movable chuck adapted to be brought into engagement with the shaft, and an actuating device for the chuck adapted to be controlled from outside the shaft, the chuck being actuable magnetically via a current supply.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: March 15, 1988
    Assignee: Peters Maschinenfabrik GmbH
    Inventor: Lothar Schroder
  • Patent number: 4703644
    Abstract: Apparatus for mounting a pair of die members so that one die member can move toward and away from the other die member. The apparatus includes a pair of spaced die shoes for mounting respective die members and an electromagnetic unit for moving one of the die shoes toward the other die shoe. The electromagnetic unit includes a coil mounted on one of the die shoes and an armature mounted on the other die shoe, the electromagnet and the armature being between the die shoes. The armature is aligned with and partially extends into a recess in the central portion of the coil so that, when current flows through the coil, the armature is attracted to the coil and moves the other die shoe toward the one die shoe. A bias structure biases the other die shoe away from the one die shoe. Such bias structure can take the form of an air cylinder or a spring.
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: November 3, 1987
    Inventor: Kurt Waldner
  • Patent number: 4699609
    Abstract: A converter mechanism for producing generally low density pad-like cushioning dunnage product in continuous strip form from flexible sheet-like stock material such as, for instance, paper, with an electrically energizable cutter mounted on the converter mechanism, for cutting the produced dunnage product into selected lengths. The cutter includes a pivotably movable blade member adapted for engaging the produced strip of dunnage product and severing it to selected length, together with an electrically energizable motor unit coupled to the cutter blade member for actuating the latter pursuant to control of the mechanism operator.
    Type: Grant
    Filed: February 25, 1986
    Date of Patent: October 13, 1987
    Assignee: Ranpak Corp.
    Inventors: Anthony J. Komaransky, Henry L. Meyer