Magnet- Or Solenoid-actuated Tool Patents (Class 83/575)
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Patent number: 11413676Abstract: An electromagnetic stamping apparatus includes a work platform configured to load a work piece. A stamping component is coupled to the work platform and has a first position and a second position. The stamping component includes a stamping rod and a stamping head. The stamping head stamps the work piece on the first position. An electromagnetic device is coupled to the stamping rod and generates a magnetic force according to an alternating current to push the stamping component to the first position to make the stamping component stamp the work piece. A compression spring pushes the stamping component to the second position according to the restoring force of the compression spring. Wherein, the magnetic force is greater than the restoring force of the compression spring to make the stamping component stamp the work piece twice in every waveform period of the alternating current.Type: GrantFiled: January 17, 2020Date of Patent: August 16, 2022Assignee: NATIONAL TAIWAN NORMAL UNIVERSITYInventors: Shun-Tong Chen, Chao-Rong Chiang, Chien-Ta Huang
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Patent number: 9193264Abstract: 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: GrantFiled: December 22, 2011Date of Patent: November 24, 2015Assignee: SCANIA CV ABInventors: Oskar Johansson, Maria Södergren, Fredrik Roos
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Publication number: 20140290459Abstract: 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: ApplicationFiled: March 27, 2014Publication date: October 2, 2014Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Katsuhisa Hasegawa, Shinya Fujihara
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Publication number: 20090173203Abstract: 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: ApplicationFiled: June 2, 2008Publication date: July 9, 2009Applicant: PRIMAX ELECTRONICS LTD.Inventors: Yung-Tai Pan, Shin-Fu Lin
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Publication number: 20080236352Abstract: 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: ApplicationFiled: May 12, 2008Publication date: October 2, 2008Applicant: JVM CO., LTD.Inventor: Jun-ho KIM
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Patent number: 7331265Abstract: 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: GrantFiled: March 21, 2005Date of Patent: February 19, 2008Assignee: Winset Technologies L.L.C.Inventor: Philip W. Settepani
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Patent number: 6779441Abstract: 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: GrantFiled: February 10, 2003Date of Patent: August 24, 2004Inventor: Sung Boung Jun
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Publication number: 20040149106Abstract: 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: ApplicationFiled: April 5, 2004Publication date: August 5, 2004Inventor: Hans-Jurgen Hess
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Publication number: 20040099107Abstract: 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: ApplicationFiled: July 28, 2003Publication date: May 27, 2004Applicant: GERBER TECHNOLOGY, INC.Inventors: Darryl C. Stein, Kenneth Lewis Harstine, Matthew L. Reardon
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Patent number: 6651538Abstract: 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: GrantFiled: November 25, 2002Date of Patent: November 25, 2003Assignee: Dosaka EM Co., Ltd.Inventors: Isao Tamura, Sumio Nakajima
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Patent number: 6612215Abstract: 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: GrantFiled: June 8, 2001Date of Patent: September 2, 2003Assignee: Max Co., Ltd.Inventor: Shinichi Takeuchi
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Patent number: 6598505Abstract: 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: GrantFiled: February 23, 2001Date of Patent: July 29, 2003Assignee: International Business Machines CorporationInventors: Donald W. Henderson, Edward F. Helinski
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Publication number: 20030101858Abstract: 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: ApplicationFiled: November 25, 2002Publication date: June 5, 2003Inventors: Isao Tamura, Sumio Nakajima
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Patent number: 6484613Abstract: 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: GrantFiled: May 12, 1995Date of Patent: November 26, 2002Assignee: International Business Machines CorporationInventors: Ho Chong Lee, Ganesh Subbarayan, Paul Gerard Wilkin
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Publication number: 20020121169Abstract: 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: ApplicationFiled: February 14, 2002Publication date: September 5, 2002Inventor: George J. LeMoine
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Patent number: 6389941Abstract: 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: GrantFiled: April 14, 2000Date of Patent: May 21, 2002Assignee: Marquip, LLCInventor: James R. Michler
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Publication number: 20010049989Abstract: 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: ApplicationFiled: June 8, 2001Publication date: December 13, 2001Applicant: Max Co. Ltd.Inventor: Shinichi Takeuchi
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Patent number: 6305258Abstract: 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: GrantFiled: February 18, 1998Date of Patent: October 23, 2001Assignee: International Business Machines CorporationInventors: Donald W. Henderson, Edward F. Helinski
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Patent number: 6298761Abstract: 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: GrantFiled: May 7, 1999Date of Patent: October 9, 2001Assignee: International Business Machines CorporationInventors: David E. Houser, Candido C. Tiberia, James A. Veasaw
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Patent number: 6247388Abstract: 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: GrantFiled: January 8, 1999Date of Patent: June 19, 2001Assignee: Molins PLCInventors: David Christopher Miller Carter, Peter Nicholas Collett
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Patent number: 6230598Abstract: 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: GrantFiled: January 30, 1998Date of Patent: May 15, 2001Inventor: David J. Ressler
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Patent number: 6032558Abstract: 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: GrantFiled: March 20, 1998Date of Patent: March 7, 2000Assignee: Marquip, Inc.Inventor: James R. Michler
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Patent number: 5924350Abstract: 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: GrantFiled: September 25, 1997Date of Patent: July 20, 1999Assignee: International Business Machines CorporationInventor: Edward F. Helinski
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Patent number: 5924618Abstract: 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: GrantFiled: March 21, 1997Date of Patent: July 20, 1999Inventor: Donald A. Doak
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Patent number: 5905352Abstract: 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: GrantFiled: October 9, 1997Date of Patent: May 18, 1999Assignee: International Business Machines CorporationInventors: William Dale Carbaugh, Jr., Mark Joseph LaPlante, David Clifford Long, Karl Friedrich Stroms, Christopher David Setzer
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Patent number: 5868055Abstract: 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: GrantFiled: October 18, 1996Date of Patent: February 9, 1999Inventor: Walter Suter
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Patent number: 5726568Abstract: 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: GrantFiled: June 7, 1995Date of Patent: March 10, 1998Assignee: International Business Machines CorporationInventors: William Dale Carbaugh, Jr., Mark Joseph LaPlante, David Clifford Long, Karl Friedrich Stroms, Christopher David Setzer
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Patent number: 5410233Abstract: 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: GrantFiled: April 14, 1994Date of Patent: April 25, 1995Assignee: International Business Machines CorporationInventors: William D. Carbaugh, Jr., Mark J. LaPlante, David C. Long, Karl F. Stroms, Christopher D. Setzer
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Patent number: 5350898Abstract: 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: GrantFiled: July 14, 1993Date of Patent: September 27, 1994Assignee: Kabushiki Kaisha Tokyo HoraishaInventor: Shigeji Higashiguchi
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Patent number: 5320013Abstract: 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: GrantFiled: November 17, 1992Date of Patent: June 14, 1994Assignee: Fuji Electric Co., Ltd.Inventors: Mitsuharu Nonami, Yukinori Kawamura, Kozo Matsumoto, Norikatsu Matsumoto, Fumisato Niino
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Patent number: 5275077Abstract: 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: GrantFiled: February 27, 1991Date of Patent: January 4, 1994Assignee: Mimaki Engineering Co., Ltd.Inventor: Hisayuki Kobayashi
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Patent number: 5262617Abstract: 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: GrantFiled: August 17, 1990Date of Patent: November 16, 1993Assignee: Kabushiki Kaisha Tokyo HoraishaInventor: Shigeji Higashiguchi
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Patent number: 5245904Abstract: 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: GrantFiled: April 23, 1992Date of Patent: September 21, 1993Inventor: George M. Meyerle
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Patent number: 5239904Abstract: 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: GrantFiled: August 2, 1991Date of Patent: August 31, 1993Assignee: Max Co., Ltd.Inventors: Morio Yamaguchi, Takashi Uchida
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Patent number: 5233895Abstract: 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: GrantFiled: November 12, 1992Date of Patent: August 10, 1993Assignee: International Business Machines Corp.Inventors: Anthony F. Coneski, Mitchel Waian
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Patent number: 5222012Abstract: 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: GrantFiled: January 17, 1991Date of Patent: June 22, 1993Assignee: International Business Machines CorporationInventors: Richard F. Frankeny, Jerome A. Frankeny, Thai Q. Ngo
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Patent number: 5113736Abstract: 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: GrantFiled: June 26, 1990Date of Patent: May 19, 1992Inventor: George M. Meyerle
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Patent number: 5079983Abstract: 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: GrantFiled: May 8, 1990Date of Patent: January 14, 1992Assignee: International Business Machines CorporationInventor: Peter H. Bruhn
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Patent number: 5045009Abstract: 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: GrantFiled: May 4, 1990Date of Patent: September 3, 1991Assignee: Zenith Electronics CorporationInventors: Lowell A. Cordingley, Lawrence W. Dougherty, Allan D. Kautz, Armando V. Marino
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Patent number: 4934236Abstract: 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: GrantFiled: November 7, 1988Date of Patent: June 19, 1990Assignee: AM International CorporationInventor: James F. Gordon
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Patent number: 4926677Abstract: 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: GrantFiled: December 3, 1987Date of Patent: May 22, 1990Inventor: Kurt Waldner
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Patent number: 4909112Abstract: 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: GrantFiled: August 17, 1987Date of Patent: March 20, 1990Assignee: Kohler General Corp.Inventor: Bruce C. Rosenthal
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Patent number: 4872381Abstract: 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: GrantFiled: July 13, 1988Date of Patent: October 10, 1989Assignee: International Business Machines Corp.Inventor: Karl F. Stroms
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Patent number: 4831909Abstract: 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: GrantFiled: October 28, 1987Date of Patent: May 23, 1989Assignee: Windmoller & HolscherInventors: Rudolf Peters, Richard Saatkamp
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Patent number: 4821614Abstract: 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: GrantFiled: January 6, 1988Date of Patent: April 18, 1989Assignee: International Business Machines CorporationInventors: Russell W. Fleet, David C. Long, Karl F. Stroms, Gerhard Weiss
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Patent number: 4796501Abstract: 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: GrantFiled: July 16, 1987Date of Patent: January 10, 1989Inventor: Peter Hagmann
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Patent number: 4791843Abstract: 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: GrantFiled: November 2, 1987Date of Patent: December 20, 1988Assignee: Mobil Oil CorporationInventors: Fox J. Herrington, Richard A. Holland
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Patent number: 4732068Abstract: 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: GrantFiled: February 12, 1986Date of Patent: March 22, 1988Assignee: Omron Tateisi Electronics Co.Inventors: Ryoichi Yasuda, Kazutoshi Yamada
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Patent number: 4730529Abstract: 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: GrantFiled: September 10, 1986Date of Patent: March 15, 1988Assignee: Peters Maschinenfabrik GmbHInventor: Lothar Schroder
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Patent number: 4703644Abstract: 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: GrantFiled: February 10, 1986Date of Patent: November 3, 1987Inventor: Kurt Waldner