Patents Examined by Donald R. Schran
  • Patent number: 4951537
    Abstract: An improvement to a stamping press having a blanking punch and die combination comprising a blanking die defining an opening, a cooperating blanking punch dimensioned closely to mate with the opening wherein the die edge defining the opening is radiused to cause metal flow, a stock engaging shedder displaceable within the die opening to engage and clamp stock, and a stripper encircling the blanking punch and displaceable therealong to remove surplus stock after a blanking operation. The improvement comprises the stripper being disposed to engage and clamp stock being punched by the blanking punch and die.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: August 28, 1990
    Assignee: Ace Technology Corporation
    Inventor: Edward D. Bennett
  • Patent number: 4941378
    Abstract: A continuously fed tube is momentarily halted at a cutting station and quickly cut by a rotating knife. The tube is continuously advanced from driving rollers to idler rollers and passes through interemdiate pinch rollers which are cam controlled in synchronism with the cutting process to bow the tube at a rate which causes the tube portion at the cutting station to briefly stop during cutting. The cutter includes a planetary gear set having a carrier rotatable about a central axis which carries a knife for rotation about another axis while it revolves about the central axis. The knife makes many rotations per carrier revolution but is in position to cut the tube during one of the rotations.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: July 17, 1990
    Assignee: General Motors Corporation
    Inventor: George K. Snyder
  • Patent number: 4934230
    Abstract: A die stamping system includes opposed die members which clamp a metal workpiece to be shaped, cut or pierced after which the die members are moved away from one another and a part is subsequently ejected wherein the ejector is controlled for a selected delay time by a plurality of cylinder assemblies mounted in a manifold so that they are connected to a source of inert gas such as nitrogen under high pressure and to a source of hydraulic pressure. Each cylinder assembly includes a piston associated with and exposed to the nitrogen in the manifold. The cylinder assemblies are connected to a single hydraulic valve which has associated therewith an accumulator and which is operated simultaneously to actuate the cylinders. The hydraulic lines to the cylinders are provided in the manifold.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: June 19, 1990
    Inventor: Bernard J. Wallis
  • Patent number: 4934238
    Abstract: In a device for clamping a circular saw blade, the saw blade is firmly clamped between two flanged rings and thereby connected to these so as to form an exchangeable tool unit which is pushed onto the free end of a saw shaft for rotation with the saw shaft and slidable displacement. Compression springs or the like are arranged between the tool unit and a stop face at the free end of the saw shaft to act upon one of the flanged rings and move the tool unit a short distance away from the stop face. A rotatingly mounted thrust plate which can be pressed centrically against the other flanged ring causes the tool unit to firmly engage on the stop face of the saw shaft.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: June 19, 1990
    Assignee: Chr. Eisele Maschinenfabrik GmbH & Co. KG
    Inventor: Adelbert Lauffer
  • Patent number: 4934229
    Abstract: A marking station for defect locations and quality limits in timber comprises a transporting device arranged to transport a timber in a movement direction through the marking station, a device for changing a transporting speed of the timber in the marking station, an indicating station part provided with a laser transmitting element and operative for indicating on the timber with a laser beam a first separating plane in the movement direction before a defect location and a second separating plane in the movement direction behind the defect location as well as for indicating quality limits, the laser transmitting element being movable by an operator along a guiding means parallel to the movement direction relative to the timber to indicating positions corresponding to the separating planes and the quality limits, a computer receiving the indicating positions of the laser transmitting element in the movement direction, the laser transmitting element being formed as a first mirror, a laser producing the laser be
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: June 19, 1990
    Assignee: Fagus-GreCon Greten GmbH & Co., KG
    Inventors: Ernst Greten, Klaus Jurisch
  • Patent number: 4928562
    Abstract: Disclosed is a film perforator having a punch unit, a pad roller and a feed roller which are disposed at the upstream side of the punch unit and support a film by nipping it between them, and a sprocket which is disposed at the downstream side of the punch unit and comes into engagement with punch-finished perforations, the sprocket and the feed rollers are connected by a pulley and the line speed of the sprocket is adjsuted to be a little higher than that of the feed rollers so that the film is caused to slip from its nipped position between the feed roller and the pad roller, whereby the film is exerted with backward tension so as to keep its proper flatness.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: May 29, 1990
    Assignee: Konica Corporation
    Inventors: Toyokiti Tanimura, Masahiro Ikeda
  • Patent number: 4926733
    Abstract: A saw-blade tensioning arrangement for band saw and like machines which includes a hydraulic cylinder (6) having arranged for movement therein a piston (7) which is intended to activated saw-blade tension control means (2). The blade tension is, in this way, dependent on the hydraulic pressure in the cylinder. The arrangement includes means for pneumatically regulating the hydraulic pressure, these means including a pneumatically operated pressure booster (10) and means (19, 20, 35) for activating the pressure booster at the end of a working stroke of the hydraulic piston, therewith to tension the saw blade to the desired working tension, this working tension being determined, inter alia, by the blade width.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: May 22, 1990
    Assignee: Aktiebolaget A.K. Eriksson
    Inventor: Kurt Janson
  • Patent number: 4920845
    Abstract: The miter box has a flat rectangular base and a pair of upraised, parallel and spaced-apart longitudinal guide rails. One of the guide rails is rigidly secured to the base, while the other can be laterally adjusted to guide the support plates of different makes of circular saws. A work piece guide bar is provided, being pivotally secured to the base at one of its ends and provided with a bolt-and-nut arrangement engaging an arcuate slot in the base, for releasably locking same in a desired angular position in relation to the path of the saw. A portion of a depression made in the base between the guide rails is occupied by a removable plank for receiving saw-cuts made by the specific saw used with the miter box.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: May 1, 1990
    Inventor: Richer Blanchette
  • Patent number: 4916992
    Abstract: A laminate cutting apparatus has a support belt supported on a frame for reciprocating horizontally in the longitudinal direction, independently lowerable support plates juxtaposed in the longitudinal direction and retained on the frame for supporting the bottom of a laminate support portion of the belt, suction ports on opposing side portions of the frame for withdrawing air from the interior of the laminate supported on the support portion with its upper and lower surfaces covered with air-impermeable sheets, a longitudinally reciprocated travelling body supported on the frame, a transversely reciprocated cutter head supported on the travelling body, a cutter on the cutter head for being raised and lowered to cut the laminate, recess forming rollers for forming the support portion of the belt into a transversely extending movable recess open at the top, a lower receiving member secured to the travelling body and arranged in parallel with the rollers within the recess, interconnected closure plates within th
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: April 17, 1990
    Assignee: Kabushiki Kaisha Kawakami Seisakusho
    Inventor: Nobuo Nasu
  • Patent number: 4916991
    Abstract: A punching and longitudinal cutting device for rotary folders includes two pairs of opposite web feeding rollers fixedly arranged on shafts. One shaft in a first pair carries an edge trimming blade and a punching or perforating blade and is adjustable in radial direction relative to the other shaft by means of cams controlled by a control shaft. The angular position of the cams is adjustable so that the one shaft can be adjusted either in parallel or in an inclined position relative to the other shaft. The other shaft is axially adjustable relative to the frame. The other shaft supports a counter blade cooperating with the edge cutting blade, a counter roll and a carrier for supporting two coplanar counter rolls cooperating with the punching or perforating blade. The coplanar counter rolls are axially displaceable on the carrier and held in a fixed position relative to the frame.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: April 17, 1990
    Assignee: VCB Kombinat Polygraph Werner Lamberg
    Inventor: Klaus Hertrich
  • Patent number: 4914990
    Abstract: The apparatus includes a rotatable headstock trimmer unit including a reciprocating spindle that is rotatable about a horizontal axis and has an annular cutting element secured to one end thereof for engaging the open upper end of an outwardly flanged can, a rotatable tailstock unit including a can base holder that is rotatable about an axis coaxial with the horizontal axis of the trimmer unit and which engages the lower end of the flanged can, and a rotatable cutting element disposed in the path of the reciprocating annular cutting element. The spindle and can base holder rotate about the same horizontal axis, the spindle reciprocates to engage the annular and rotatable cutting elements which cooperate to trim outwardly flanged end portion at the open end of the can.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: April 10, 1990
    Assignee: H. L. Fisher Mfg. Co., Inc.
    Inventors: Siegfried Hellweg, Jay E. Melind
  • Patent number: 4915000
    Abstract: A machine for cutting foam material having an endless cutting wire (80) supported on a number of rollers (51, 52, 53, 54 and 55) to travel a fixed length continuous path. Two of the rollers (52, 53) being mounted to move along respective parallel paths in synchronism to displace that portion (81) of the wire (80) extending between the rollers (52, 53) in the plane of rotation of those rollers. A motor (42) to drive the endless wire (80) about the continuous path so the foam material presented to the portion (81) of the wire may be cut thereby. The displacement of the roller (52, 53) being controlled by a motor (69) under the control of an ECU (40) to determine the shape to which the foam material is cut.
    Type: Grant
    Filed: May 24, 1988
    Date of Patent: April 10, 1990
    Inventor: Richard O. MacFarlane
  • Patent number: 4914995
    Abstract: A method and apparatus particularly suited for cutting continuously moving thermoplastic film such as linear low density polyethylene and includes a stationary anvil, preferably a roller of tool steel and a tungsten carbide die mounted for rotation along a circular arc intersecting the anvil. In an embodiment for punching holes in the film, the apparatus includes a saddle shaped hollow tungsten carbide die projecting slightly above the cylindrical surface of a roll passing under a spring biased tool steel roller for cutting a semicircular hole in a continuously moving continuous plastic film web for the manufacturer draw tape bags. A vacuum is supplied to the center of the die for removing the segment of plastic film cut out by the apparatus.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: April 10, 1990
    Assignee: Mobil Oil Corporation
    Inventor: Paul V. Osborn
  • Patent number: 4913017
    Abstract: A meat cutting device comprising a feeding chute defining for the meat a path inclined towards a blade assembly, the blade assembly being formed by a plurality of disc-like cutting blades; whereby the meat piece to be cut passes automatically through the cutting blades due to the combined effect of the inclined path and the cutting blades.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: April 3, 1990
    Assignee: Fendo Ky
    Inventor: Jari Akrenius
  • Patent number: 4913022
    Abstract: A circular saw blade having shearing teeth and cleaving teeth in combination wherein the shearing teeth alternatively cut the fiber on opposite sides of the kerf, and the cleaving teeth separate out the sheared fiber. The saw cuts in either rotational direction.
    Type: Grant
    Filed: December 13, 1988
    Date of Patent: April 3, 1990
    Inventor: Anthony K. Kuklinski
  • Patent number: 4911045
    Abstract: A cutter blade assembly 10 for the production of a decorative food core 18 for use with hydraulic food cutting apparatus has a frame constructed from a series of sequential rings 11, 12 and 13 which together define a longitudinal passageway. A plurality of strip knives 15 are arranged therein to define various segments of the longitudinal passageway and are connected to rings 11, 12 and 13 by inserting the end tabs of strip knives 15 into notches 14. Rings 11, 12 and 13 are then bolted together by the use of bolts passing through holes 16.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: March 27, 1990
    Inventor: George A. Mendenhall
  • Patent number: 4909115
    Abstract: A band saw blade is loaded between pairs of guide wheels upon tensioning the blade by guiding the blade between pairs of spaced guide plates which define converging slots that converge toward the guide wheels. The approach is particularly useful in loading blades on underwater band saw machines used to cut radioactive materials.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: March 20, 1990
    Inventor: Steven R. Reeves
  • Patent number: 4908931
    Abstract: An apparatus for cutting the leads of an electronic part inserted into a printed board and simultaneously detecting the insertion of said leads and/or the characteristics of said electronic part, said apparatus comprising:a first blade means having an electrically conductive surface;a second cutting blade means positioned in a cooperating relation to the first cutting blade means so as to cut the lead, said blade means having a substrate made of an electrically non-conductive material, a blade edge provided at one end of the substrate, and at least one wear-resisting electrode coating secured to the substrate in the vicinity of the blade edge so that the electrode coating is electrically in communication with the first cutting blade means through the lead only at the time of the cutting of the lead, said coating being made of a metal having wear resistance or an electrically conductive ceramic; andmeans for electrically connecting said electrode coating to said first blade member and for detecting the inserti
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: March 20, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Tomiteru Itoh, Shinsui Moroi, Munenobu Suzuki, Zenshiro Oyama, Yuji Sekimura, Mitho Haginoya
  • Patent number: 4907479
    Abstract: An apparatus for cutting a laminated sheet material includes a pedestal for supporting on a support surface thereof a laminate of a sheet material at least the upper and lower surfaces of which are covered with an air-impermeable sheet. Arranged on the support surface is a suction pipe a side face of which is provided with a suction port for attracting a side face of the laminate. Connected to the suction pipe is a suction pipe drive unit for reciprocating the suction pipe in one direction. Coupled to a cutter head arranged above the laminate is a cutter head drive unit for reciprocating the cutter head in a direction orthogonal to the direction in which the suction pipe is reciprocated. A guide groove opposing the path along which the cutter head is reciprocated is provided in the support surface of the pedestal, and a number of closure plates driven in synchronization with the cutter head are fitted in the guide groove, the closure plates being interconnected.
    Type: Grant
    Filed: April 5, 1988
    Date of Patent: March 13, 1990
    Assignee: Kabushiki Kaisha Kawakami Seisakusho
    Inventor: Nobuo Nasu
  • Patent number: 4907482
    Abstract: The Crownmaster is a tool used as a guide, with a hand held circular power saw, in the cutting of crown moulding, for inside and outside corners. Specifically, the Crownmaster allows the user to simultaneously make the angle cut and the bevel cut in crown moulding.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: March 13, 1990
    Inventor: Lawrence W. Hujo