Spring Biased Stripper Patents (Class 83/143)
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Patent number: 11092182Abstract: The present disclosure relates to a drive screw for connecting a carrier formed of foamed material to a part to be affixed to the carrier. In one implementation, the drive screw includes a threaded pin with a first end having shaped elements configured to connect to a tool that transfers torque and a second end configured to penetrate into the carrier. In addition, the first end of the threaded pin may be surrounded by and connected to an interlock component, and the part to be affixed may have an interlock receiving space corresponding to the interlock component.Type: GrantFiled: December 12, 2017Date of Patent: August 17, 2021Assignee: LISA DRÄXLMAIER GMBHInventors: Johann Petermaier, Leonard Dobos
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Patent number: 9648923Abstract: A mold and a method for making a heterogeneous composite outer shoe sole. The mold includes a press cutting die, a positioning plate, a positioning jig and a pressing jig. The method involves using the press cutting die to cut a first base material into cut pieces, positioning the press cutting die on the positioning jig with the positioning plate held therebetween, using the pressing jig to push the cut pieces into the material receiving holes of the positioning plate; preparing a shoe sole preform that is made of a second base material and has binding portions positionally corresponding to the material receiving holes; applying adhesive to the binding portions and to the cut pieces; and butting the positioning plate with the shoe sole preform, whereby the cut pieces of the first base material are bound with the binding portions in a batch.Type: GrantFiled: October 9, 2014Date of Patent: May 16, 2017Assignee: Dah Lih Puh Co., Ltd.Inventor: Jui-Fen Shiao
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Patent number: 8925435Abstract: A solid tool gripping and alignment plate, for accurately gripping and holding a tool placed therein in perfect alignment. The tool gripping and alignment plate consists of a flat unitary tool gripping plate with a smooth non-circular opening formed in the tool gripping plate for gripping a tool therein fully 360 degrees about a tool's periphery upon adjustment of the gripping plate. A single threaded adjustment member is arranged through a side of the gripping plate for biasing a portion of the smooth non-circular opening in the tool gripping plate from a non-circular shape into the circular shaped opening for circumferentially gripping of a tool therein.Type: GrantFiled: September 21, 2010Date of Patent: January 6, 2015Inventor: Richard J. Greenleaf
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Patent number: 8631730Abstract: A noodle scraper including a plate body having a bent section extending along a longitudinal direction; a plurality of first scraping tines having a longest tine-length; and a plurality of second scraping tines having a tine-length which is shorter than that of the first scraping tine, wherein the plurality of first and second scraping tines are alternately provided at one of the long sides of the plate body in a comb form; the second scraping tine including a tine-base or tine-middle section; and the tine-base or tine-middle section is formed in a folded or curved shape, a tine-edge section of the first or second scraping tine including a face that is sloped in a vertical cross-section orthogonal to a direction in which the tine-edge section extends.Type: GrantFiled: September 9, 2011Date of Patent: January 21, 2014Assignee: Nissin Foods Holdings Co., Ltd.Inventors: Yuji Ishii, Yasumasa Kawamura, Mitsuru Tanaka
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Patent number: 8178018Abstract: Methods and apparatuses for producing fiber-cement soffit building products. In one embodiment of the invention, an apparatus for producing fiber-cement soffits includes a punch assembly, a support assembly facing at least a portion of the punch assembly, and an actuator operatively coupled to at least one of the punch assembly or the support assembly. The punch assembly can include a punch plate and a plurality of punches coupled to the punch plate. Each punch can have a length and a first cross-sectional dimension generally normal to the length. The support assembly can have a support plate, and at least a portion of the support plate is juxtaposed to at least a portion of the punch plate. The support plate can include a plurality of holes arranged in a pattern so that each hole in the portion of the support plate juxtaposed to the punch plate is aligned with a corresponding punch on the punch plate.Type: GrantFiled: January 4, 2002Date of Patent: May 15, 2012Assignee: PacTool International Ltd.Inventors: Joe Gaidjiergis, Lloyd Fladgard, Scott Fladgard
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Publication number: 20110067538Abstract: A die press assembly for producing punched parts from a travelling web of material, the die press comprising: a lower die shoe securing a compound punch holder plate thereon, the compound punch holder biasedly gripping a compound punch tool therein, the lower die shoe also supporting a reciprocably movable stripper holder plate, wherein the compound punch extends slideably through a biasedly gripped stripper holder tool in the stripper holder plate; an upper punch holder movable with respect to the lower die shoe, the upper punch holder having a center punch holder plate which biasedly grips a center punch tool therewithin; and a die holder plate fixedly attached to the center punch holder plate with a biasedly gripped die tool slideably enclosing the center punch, wherein each of the biasedly gripped tools are in co-axial alignment in distortable bores in their respective plates.Type: ApplicationFiled: September 21, 2010Publication date: March 24, 2011Inventor: Richard J. Greenleaf
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Publication number: 20100218656Abstract: A stripper unit incorporates a precision threaded plug that preloads a mechanical die spring that, in turn, preloads the movable or traveling stripper adjacent the punch tip. The precision threaded plug simultaneously accurately locates the stripper unit on a commercially available ball-lock punch retainer. The stripper unit is entirely self-contained on the face of the ball-lock punch retainer, thus minimizing the space required on the press platen.Type: ApplicationFiled: August 27, 2009Publication date: September 2, 2010Inventor: David J. Moellering
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Patent number: 7698979Abstract: A biasing assembly for a punching device that includes a punch support member adapted to support a punch and including a head portion and a main portion extending from the head portion. The main portion has a recessed surface. A retaining member is coupled to the punch support member with the punch support member being slidable with respect to the retaining member. A coupling member is disposed between the main portion of the punch support member and the retaining member. A portion of the coupling member engages the recessed surface. A biasing member is supported between the head portion of the punch support member and the retaining member. The punch support member is movable between at least first and second positions with respect to the coupling member.Type: GrantFiled: September 22, 2004Date of Patent: April 20, 2010Assignee: Amada Tool America, Inc.Inventors: Fumitaka Sugizaki, Hitoshi Iizuka, Edward A. Dries
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Publication number: 20090288531Abstract: In a method for the removal of punch waste on punching, in particular punching using knife attachment cutting, in which, for the production by means of a punch blade of a punched opening in a workpiece supported at the end face of a cylindrical anvil, a part of the workpiece is punched out and the punched out part lies before its removal on a base, in particular a resilient base, movable axially in the cylindrical anvil, the movable base is retracted together with the punched out part into the cylindrical anvil up to and into the region of a lateral ejection opening provided in the cylindrical anvil and the punched out part supported on the retracted base is subsequently ejected through the ejection opening by loading with a corresponding force transversely to the axial direction. In addition, an apparatus for the carrying out of the method is set forth.Type: ApplicationFiled: February 19, 2009Publication date: November 26, 2009Applicant: Maschinenfabrik Spaichingen GmbHInventor: Timo Steimer
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Patent number: 7581475Abstract: A stripper unit incorporates a precision threaded plug that preloads a mechanical die spring that, in turn, preloads the movable or traveling stripper adjacent the punch tip. The precision threaded plug simultaneously accurately locates the stripper unit on a commercially available ball-lock punch retainer. The stripper unit is entirely self-contained on the face of the ball-lock punch retainer, thus minimizing the space required on the press platen.Type: GrantFiled: July 13, 2006Date of Patent: September 1, 2009Inventor: David J. Moellering
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Patent number: 7290473Abstract: A pierce cam is compact, can save space, can be easily mounted, can reduce cost, can even be mounted to a sloped surface, and a pierce punch and required accessories can be ordered in bulk from a single source. A pierce cam includes a pierce punch, a body which is detachably provided with the pierce punch, a stripper which is fitted to the pierce punch inward of a leading end portion of the pierce punch and is biased by a coil spring in a direction away from the body, a rotating arm which is swingably mounted on the body and is movable into contact with a rear end surface of the pierce punch, and a driver which transfers a descending force of a press machine to the rotating arm, and hooks and ascends the rotating arm at the time of moving upward.Type: GrantFiled: July 8, 2004Date of Patent: November 6, 2007Assignee: Umix Co., Ltd.Inventor: Noritoshi Kitamura
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Patent number: 7080585Abstract: A clamping arrangement is provided for a slitter and/or hole punch for a plastic film processing machine. The punch can be unitarily formed on a base member, and mounted on a block that is affixed to the end of an actuator rod. A double-acting pneumatic cylinder actuator serves as the reciprocating mechanism for the punch. A hold-down clamping mechanism includes an apertured clamping plate and frame that surrounds the punch and is spring-driven using a compression spring mounted over the shaft or rod of the actuator. The compression spring compresses on the upstroke, and assists the cylinder on the downstroke.Type: GrantFiled: September 16, 2002Date of Patent: July 25, 2006Assignee: Pearl Technologies, Inc.Inventor: Andrew D. Prudhomme
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Patent number: 6513411Abstract: A die block assembly of the present invention includes an upper die (20), an unloading plate (40), a plurality of springs (60), and a plurality of spacer blocks (80). A plurality of receiving holes (30) is defined in the upper die, for receiving the springs. A plurality of rams (34) depends from the upper die, for stamping a workpiece (95). The unloading plate is movably connected under the upper die, and defines a plurality of through holes (42) for accommodating the corresponding rams therein. Each spacer block is a stepped cylinder which includes a base (82) and a protrusion (84) extending upwardly from the base. Each spring abuts the base of the corresponding spacer blocker. A height of each base is slightly greater than a maximize clearance between the upper die and the unloading plate. The spacer blocks prevent spring fragments produced in the stamping process from entering the clearance.Type: GrantFiled: December 20, 2000Date of Patent: February 4, 2003Assignee: Hon Hai Precision Ind. Co., Ltd.Inventor: Yu Liu Shang
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Publication number: 20020073817Abstract: A die block assembly of the present invention includes an upper die (20), an unloading plate (40), a plurality of springs (60), and a plurality of spacer blocks (80). A plurality of receiving holes (30) is defined in the upper die, for receiving the springs. A plurality of rams (34) depends from the upper die, for stamping a workpiece (95). The unloading plate is movably connected under the upper die, and defines a plurality of through holes (42) for accommodating the corresponding rams therein. Each spacer block is a stepped cylinder which includes a base (82) and a protrusion (84) extending upwardly from the base. Each spring abuts the base of the corresponding spacer blocker. A height of each base is slightly greater than a maximize clearance between the upper die and the unloading plate. The spacer blocks prevent spring fragments produced in the stamping process from entering the clearance.Type: ApplicationFiled: December 20, 2000Publication date: June 20, 2002Inventor: Yu Liu Shang
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Patent number: 6035752Abstract: A scrap cutting assembly for use in a reciprocating press in which a cutter is carried on a ram which reciprocates with respect to a fixed base to form and cut material passing through the press includes an exit plate mounted on the press base adjacent the material exit point and a shutter spring and backing spring attached to the exit plate. The exit plate has a tapered bottom surface which tapers upwardly toward the ram and the shutter spring and backing spring are attached to and lie along the bottom tapered surface with one end of the shutter spring extending beyond the end of the exit plate and slightly above the top surface thereof so as to support the material as it is fed through the press. The shutter spring is depressed by the cutter as the ram and cutter descend to sever the material.Type: GrantFiled: June 26, 1998Date of Patent: March 14, 2000Assignee: Akron Steel Fabricators Co., Inc.Inventors: David E. Harhay, Richard A. Mackey
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Patent number: 5979277Abstract: A stripper holder for holding a stripper plate conforms with the deformation of a die plate. A pressing force applied to the stripper plate and is greater than an elastic limit of a metal tape to be punched, and less than a pressing deformation or breakage force of the metal tape. The stripper holder may also be flexible, or such that the metal tape is pressed at two different positions for one punching position by two different pressing forces.Type: GrantFiled: February 1, 1996Date of Patent: November 9, 1999Assignee: Hitachi Cable, Ltd.Inventors: Takehiro Kitsuda, Hiroshi Fujikawa, Keiichi Sato, Makoto Someno
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Patent number: 5934165Abstract: An adjustable punch assembly is provided for use at an indexable punching station in a turret punch press. The overall length of the punch assembly may be adjusted using a motor and pulley system that is also used for indexing the punch tool. Further, the punch assembly includes a quick disconnect connection between the punch driver and the punch tip that facilitates the changing of the punch tip.Type: GrantFiled: March 19, 1997Date of Patent: August 10, 1999Assignee: Strippit, Inc.Inventor: Stephen K. Chatham
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Patent number: 5896795Abstract: A scrap cutting assembly for use in a reciprocating press in which a cutter is carried on a ram which reciprocates with respect to a fixed base to form and cut material passing through the press includes an exit plate mounted on the press base adjacent the material exit point and a shutter spring and backing spring attached to the exit plate. The exit plate has a tapered bottom surface which tapers upwardly toward the ram and the shutter spring and backing spring are attached to and lie along the bottom tapered surface with one end of the shutter spring extending beyond the end of the exit plate and slightly above the top surface thereof so as to support the material as it is fed through the press. The shutter spring is depressed by the cutter as the ram and cutter descend to sever the material.Type: GrantFiled: July 5, 1996Date of Patent: April 27, 1999Assignee: Redicon CorporationInventors: David E. Harhay, Richard A. Mackey
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Patent number: 5499564Abstract: An apparatus for forming a spread of generally thin, pliable material from a roll thereof onto a table includes a cradle for holding the roll of the material which is selectively operable to rotate the roll of material for feeding a web of material generally forwardly from the roll. An endless conveyor including a series of flights spaced at intervals therealong with openings between the flights is driven for forward travel, and the web from the roll of the material is received on and carried forward by a flight in the upper reach of the conveyor. A knife is operable to cut the web to separate a first sheet of material from the roll of material. The first sheet of material is thereafter held from forward movement with the supporting flight by grippers selectively operable for gripping the first sheet of material on the supporting flight in the upper reach of the conveyor. Thus, the supporting flight slides out from under the first sheet of material with the first sheet falling onto the table.Type: GrantFiled: April 15, 1994Date of Patent: March 19, 1996Assignee: Ark, Inc.Inventors: Charles H. Sanborn, III, Joel D. Clanton
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Patent number: 5301533Abstract: A workpiece engaging apparatus includes a drive having a linearly reciprocal drive member. Two pairs of arms are arranged in opposed, inverted relationship with respect to each other and are pivotally connected at one end to the drive. Each arm has a cam formed therein. The cams in each of the pairs of arms are identically constructed, but the cams in one pair are disposed in opposed, inverted relationship with respect to the cams in the opposed pair of arms. Cam follower members mounted on the linear drive member engage the cams during reciprocal movement of the drive member to pivot the pairs of arms between an open, spaced-apart position and a closed workpiece engaging position. Each of the cams includes a first arcuate shaped first end portion which smoothly merges into a substantially linear second end portion.Type: GrantFiled: July 23, 1992Date of Patent: April 12, 1994Inventor: Donald T. Jackson
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Patent number: 5235887Abstract: A cutter apparatus having a fixed blade in an opening of a paper feeding guide; and a movable blade having a cutting portion which enters into the opening. A paper holding plate is provided on the movable blade slidably in the cutting direction. The distal end of the paper holding plate is kept projected by a sliding mechanism in the cutting direction from the distal end of the cutting portion of the movable blade. With the paper holding plate firmly holding the paper against the feeding guide, the sliding mechanism further moves the movable blade into the opening. On carrying out the cutting operation, firstly the paper holding plate slidingly reaches the recording paper and tightly keeps the paper stationary. Thereafter the cutting portion of the movable blade moves forward enters into the opening to cut the paper. The result is that the recording paper does not escape when undergoing the cutting operation, the cutting quality can be kept excellent to a certain extent irrespective e.g.Type: GrantFiled: July 2, 1992Date of Patent: August 17, 1993Assignee: Citizen Watch Co., Ltd.Inventor: Mikio Moriya
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Patent number: 5046389Abstract: An inspection station punch block apparatus for removing a portion of an integrated circuit die lead from a lead frame. The missing lead is used to mark a defective die and is lataer monitored by a scanning means which causes rejection of the die from the lead frame. A method of carrying out this operation is also disclosed.Type: GrantFiled: December 6, 1989Date of Patent: September 10, 1991Assignee: Micron Technology, Inc.Inventors: Ted L. Thompson, David R. Hembree
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Patent number: 5025691Abstract: The invention involves a novel structure used in piercing a metal workpiece. Other workpieces made from materials other than metal may be used, if desired. The structure uses a punch plate having movably connected below it a stripper plate. A spring means connects these two plates so that they are movable toward each other. The stripper plate has an aperture centrally located therein and a tubular punch guide fitted over the aperture. A punch housing containing a punch is telescopically fitted within said tubular punch guide and will travel through the length of the punch guide and will travel through the length of the punch guide, through the aperture and puncture a workpiece held below. The tubular punch guide prevents side to side movement of the punch and punch housing to substantialy minimize damage to the punch and supporting structures.Type: GrantFiled: June 16, 1989Date of Patent: June 25, 1991Inventor: Frank Deni
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Patent number: 4993295Abstract: A punch stripper is formed with an axially aligned aperture extending therethrough so that the punch stripper can be installed on the shaft of a punch. The punch stripper includes a cylindrical housing with a plunger telescoped within an axially aligned bore. An array of spring elements are axially aligned within the cylindrical housing such that a biasing force is exerted on one end of the plunger. A cap is held in position by a snap ring at the end of the housing most remote from the plunger. The array of spring elements exert a biasing force on the cap. An elastomeric O-ring is positioned within the cap so that a frictional force can be developed between the punch stripper and a punch that passes therethrough.Type: GrantFiled: February 26, 1990Date of Patent: February 19, 1991Assignee: Utica Enterprises, Inc.Inventor: Ernest A. Dacey, Jr.
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Patent number: 4989484Abstract: A punch assembly for a punch press is described which includes an external housing or sleeve having a punch slidably mounted therein with a spring such as a disc spring for yieldably biasing the punch toward one end of the sleeve and a removable stripper plate mounted on the sleeve in a position around the operating end of the punch. The punch is preferably keyed to the sleeve in more than one location and the stripper plate guides the punch by preventing rotation as well as lateral deflection. A retaining member such as a ring surrounds the stripper plate and can be manipulated manually, e.g. by rotating it, to enable the punch and stripper plate to be ejected by means of a spring.Type: GrantFiled: August 19, 1988Date of Patent: February 5, 1991Assignee: Mate Punch & Die CompanyInventors: Gary E. Johnson, John T. Schneider, Nils E. Sundquist
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Patent number: 4947718Abstract: A punch and die system is disclosed as comprising punch and die templets serving to positionally locate punch and die assemblies relative thereto solely adjacent the region at which punching of a workpiece occurs in combination with guide assemblies for positionally locating the punch and die templets one to the other. The punch and die assemblies are designed to utilize interchangeable punch guide and die members and in a preferred construction a punch element is removably attached to its associated driver and shaped to permit opposite ends thereof to be employed in the punching operation. One or more punch elements may be loosely attached to their associated drivers.Type: GrantFiled: April 17, 1989Date of Patent: August 14, 1990Assignee: S. B. Whistler & Sons, Inc.Inventor: S. Arthur Whistler
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Patent number: 4947719Abstract: A punch and die system is disclosed as comprising punch and die templets serving to positionally locate punch and die assemblies relative thereto solely adjacent the region at which punching of a workpiece occurs in combination with guide assemblies for positionally locating the punch and die templets one to the other. The punch and die assemblies are designed to utilize interchangeable punch guide and die members and in a preferred construction a punch element is removably attached to its associated driver and shaped to permit opposite ends thereof to be employed in the punching operation. One or more punch elements may be loosely attached to their associated drivers.Type: GrantFiled: April 17, 1989Date of Patent: August 14, 1990Assignee: S. B. Whistler & Sons, Inc.Inventor: S. Arthur Whistler
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Patent number: 4947717Abstract: A punch and die system is disclosed as comprising punch and die templets serving to positionally locate punch and die assemblies relative thereto solely adjacent the region at which punching of a workpiece occurs in combination with guide assemblies for positonally locating the punch and die templets one to the other. The punch and die assemblies are designed to utilize interchangeable punch guide and die members and in a preferred construction a punch element is removably attached to its associated driver and shaped to permit opposite ends thereof to be employed in the punching operation. One or more punch elements may be loosely attached to their associated drivers.Type: GrantFiled: April 17, 1989Date of Patent: August 14, 1990Assignee: S. B. Whistler & Sons, Inc.Inventor: S. Arthur Whistler
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Patent number: 4920840Abstract: A method of manufacturing a fabric-covered article, preferably a belt buckle, and a method for trimming the excess fabric and backing sheet material from a fabric-covered article. Apparatus for manufacturing the fabric-covered article, preferably a belt buckle and for trimming the excess fabric material after the fabric has been glued to the backing sheet, with a buckle-shaped insert sandwiched therebetween.Type: GrantFiled: April 10, 1989Date of Patent: May 1, 1990Inventor: Richard Fink
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Patent number: 4843931Abstract: A punch and die system is disclosed as comprising punch and die templets serving to positionally locate punch and die assemblies relative thereto solely adjacent the region at which punching of a workpiece occurs in combination with guide assemblies for positionally locating the punch and die templets one to the other. The punch an dide assemblies are designed to utilize interchangeable punch guide and die members and in a preferred construction a punch element is removably attached to its associated driver and shaped to permit opposite ends thereof to be employed in the punching operation. One or more punch elements may be loosely attached to their associated drivers.Type: GrantFiled: September 1, 1987Date of Patent: July 4, 1989Assignee: S.B. Whistler & Sons, Inc.Inventor: S. Arthur Whister
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Patent number: 4691602Abstract: A piercing punch and ejection assembly has a piercing punch member provided with a bore in its point thickness section. The ejector member, included in the assembly, comprises a conical helical spring of rectangular cross section that is installed into the blind hole bore of the punch member.Type: GrantFiled: September 14, 1981Date of Patent: September 8, 1987Inventor: Edward Schlueter
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Patent number: 4611519Abstract: A radius corner forming apparatus and method and which utilizes a plate to receive a metal sheet in which a corner portion is to be removed to form a radius corner. A die block and punch set is removably attachable to a conventional punch press in order to sever the corner portion of the sheet to produce the radius corner thereon. The plate which receives the metal sheet is resiliently mounted to oppose the pressure of the punch when shifted. A plurality of differently sized radius corner die blocks and co-operating punches are provided.Type: GrantFiled: September 13, 1984Date of Patent: September 16, 1986Inventor: Lloyd A. Hagerty
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Patent number: 4516448Abstract: A punch and ram assembly for a punch press which clamps a workpiece prior to punching with the same mechanism used to strip the workpiece from the punch as the punch is retracted. The elements of the clamping and stripping mechanism are carried and actuated by the ram and its motion. The invention allows for adjusting the clamping and stripping force.Type: GrantFiled: September 7, 1982Date of Patent: May 14, 1985Assignee: Houdaille Industries, Inc.Inventors: Ronald C. Hill, Richard M. Stein, Raymond J. Bzibziak, Robert Goodwill
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Patent number: 4449434Abstract: Apparatus for cutting holes and notches in thermoplastic film by using heated steel rule dies. The dies are set into a heated die block, and scrap passes through the die, and through a hole in the heated die block so pieces of scrap fuse together as they pass through the block. The die block is fixed, and a movable platen urges the film down against the heated dies. A stripper is biased up to strip the film from the dies after cutting, and is resiliently movable down to allow cutting. Air can be directed through the stripper to blow the film up, off the stripper, to prevent melting when the film motion stops. Use of two dies accurately spaced can cut wicket holes and provide accurate cutting to assure proper operation in a bagging machine.Type: GrantFiled: April 12, 1982Date of Patent: May 22, 1984Inventor: James R. Johnson
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Patent number: 4281546Abstract: An apparatus and method for cutting elastomeric material into volumetric elastomer samples is disclosed. These volumetric samples may be reproduced at identical mass for precision testing purposes. The volumetric samples are reproducible for such precision purposes by the use of a volumetric adjustment mechanism which determines the volume of the cavity into which elastomeric material is compressed before cutting. The apparatus also has a moving cutting mechanism with a contoured cutting area, which in combination with the volumetric adjustment apparatus, removes deleterious air bubbles and other deformities prior to cutting the elastomeric material. The volumetric adjustment apparatus is housed within a die apparatus, which has a damping mechanism to permit complete manipulation of the elastomer prior to cutting the elastomer into the volumetric plug. After the cutting of the plug has occurred, the ejection apparatus pushes the volumetric plug from the cavity whereupon another cycle is begun.Type: GrantFiled: July 13, 1979Date of Patent: August 4, 1981Inventor: M. Foster Fraleigh
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Patent number: 4215608Abstract: The punch stripper of the invention prevents dimpling distortion of thin workpieces and permits punching operations close to the edge of a workpiece, or close to a surface discontinuity such as a rib, while avoiding damage to the stripper. The stripper includes a resilient stripper cap profiled to narrow in the direction of the workpiece with a spherical end surface being preferred.Type: GrantFiled: November 2, 1978Date of Patent: August 5, 1980Assignee: Pivot Punch CorporationInventor: Alton G. Herlan
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Patent number: 4117753Abstract: A sheet cutting apparatus is illustrated as including a free standing cutting blade movable across the sheet material. A base member has a longitudinal channel therein through which the knife extends into a complimentary channel carried by a pressure bar so that the sheet material is confined between the base and the pressure bar for cutting by the blade which is contained safely within the base and pressure bar during its cutting stroke across the sheet material. A lifter bar is positioned adjacent the base member for raising the severed end of sheet material of the dispensing roll preparatory to cutting off another length of sheet material.Type: GrantFiled: April 7, 1976Date of Patent: October 3, 1978Inventors: William D. Friddle, Sr., William D. Friddle, Jr., Wilbourne D. O'Steen
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Patent number: 4092888Abstract: A punching device for use in a fixed frame adapted to support punch means in alignment with a ram. An assembly of a punch, a guide and stripper plate and a stripping spring is removable as a unit. The assembly of this invention is characterized by means by which the assembly is retained together when removed from the frame of the punching machine. The assembly includes a quick release guide, a clip ring spring support retainer and a replaceable stripper plate.Type: GrantFiled: July 1, 1977Date of Patent: June 6, 1978Assignee: Wilson Tool CompanyInventor: Kenneth J. Wilson
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Patent number: 4030390Abstract: An apparatus for cutting items, such as individual photographs, from a printed sheet comprising a sliding tray having a lower die to support the sheet and adapted to be moved into a housing containing an upper die. The lower die includes a series of male die members corresponding in shape to the individual photographs and the marginal area bordering the die members is spring loaded and biased to an upper position. The upper die has a series of recesses or female die members corresponding in shape to the male die members of the lower die. As the upper die is moved downwardly, the individual photographs are severed from the sheet by the shearing action of the cooperating die members.Type: GrantFiled: September 10, 1975Date of Patent: June 21, 1977Assignee: Fox Valley Tool & Die, Inc.Inventor: Richard H. Heiting
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Patent number: 3958476Abstract: A punching device includes a fixed frame adapted to support punch means in alignment with a ram. An assembly of the punch, a guide and stripping sleeve and a stripping spring is removable as a unit, and such assembly includes means by which such assembly is retained together, especially during handling away from the frame of the punching device. To this end, the sleeve has a circumferential groove in which there is a radial aperture, and a retainer member is disposed in the groove and has a portion that projects radially through the radial aperture into an elongated recess in the punch body.Type: GrantFiled: June 30, 1975Date of Patent: May 25, 1976Assignee: Houdaille Industries, Inc.Inventor: Kenneth J. Bartha
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Patent number: 3935772Abstract: A punching device includes a C-frame on which a punch and stripping assembly is upwardly urged by a stripping spring, there being a horizontal retainer pin extending through one of two slots in such assembly and carried in a selected one of a plurality of holes in the frame for selecting the pinch point clearance, namely the clearance between the stripping sleeve and the die.Type: GrantFiled: March 21, 1975Date of Patent: February 3, 1976Assignee: Houdaille Industries, Inc.Inventors: Duane J. Demus, Vitmar G. Von Langendorff
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Patent number: RE29950Abstract: A punching device includes a fixed frame adapted to support punch means in alignment with a ram. An assembly of the punch, a guide and stripping sleeve and a stripping spring is removable as a unit, and such assembly includes means by which such assembly is retained together, especially during handling away from the frame of the punching device. To this end, the sleeve has a circumferential groove in which there is a radial aperture, and a retainer member is disposed in the groove and has a portion that projects radially through the radial aperture into an elongated recess in the punch body.Type: GrantFiled: December 14, 1977Date of Patent: April 3, 1979Assignee: Houdaille Industries, Inc.Inventor: Kenneth J. Bartha