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| Number | Title | Issue Date |
| 7337645 | Draw press with a fixed draw punch and a floating draw punch A machine is disclosed for producing a deep drawn part and a shallow drawn part from sheet metal blanks in a single action draw press. A floating draw punch and a fixed draw punch are provided. The first draw die forms a part that is drawn over the fixed draw punch ... | 03/04/2008 |
| 7308814 | Method for perforating a sheet A method for perforating a sheet (1) with the aid of a stamp (3) and a matrix (2) is described, the sheet (1) being elongated before the hole punching in accordance with the setpoint diameter in the hole boundary area through bulging of t... | 12/18/2007 |
| 7266985 | Method of processing metal parts by blanking A method of processing metal parts and the like by blanking includes the steps of performing a first blanking step on a semi-finished product in order to produce a blanked semi-finished product, and performing a subsequent processing of the blanked semi-finished pro... | 09/11/2007 |
| 7107812 | Hydraulic rescue tool A hydraulic rescue tool (20) that utilizes a hydraulic cylinder (22) having a piston rod (24) that is movably disposed within the housing of the cylinder to provide linear driving means for the rescue tool. A cylinder yoke (32) is rotatab... | 09/19/2006 |
| 7100417 | Lower die assembly in pressing machine An improved lower die assembly is provided which allows a given lower die in a pressing machine to be replaced with another easily and in a short period of time relative to a die holder. In the lower die assembly in which a lower die is received and securely held in... | 09/05/2006 |
| 7032944 | Modular stamped parts transfer gripper A gripper assembly is provided having an actuator, at least one jaw member and a cam pin. The jaw member includes a cam slot that is a space formed by opposed cam walls located in the jaw arm. The cam walls form a locking portion and a pivoting portion, wherein the ... | 04/25/2006 |
| 6640603 | Slug-retaining punch press tool A punch and die tool for cutting a slug from a sheet of material that is retained in the opening of the die and does not adhere to or follow the punch on its upward stroke, and a method for retaining a slug in a die, are disclosed. The die is formed with ... | 11/04/2003 |
| 6460393 | Method for forming bucklings in a plate member, tool and plate A method and tool for forming convexities (3, 4) in a plate body (1), which plate body (1) comprises a main face (2) and a plurality of side edges. The plate body (1) is inserted between two tool halves (11, 12), which are brought together and interact to... | 10/08/2002 |
| 6427326 | Method of manufacturing connecting rod A connecting rod is formed by cold forging in a single pressing cycle at a good accuracy without separately preparing a large-end cap, to thereby reduce the manufacturing cost. A double-action type of forging apparatus is made up of an upper die, a lower ... | 08/06/2002 |
| 6408670 | Carrierless progressive die system A carrierless progressive die system and method for improving part quality and reducing cost. A strip of sheet material advances between a plurality of die stations along a continuous planar surface of a die lifter and stripper pad combination formed or a... | 06/25/2002 |
| 6345438 | Method for making bus and post electrical connector using locking pins A method for making an electrical connector of the bus and post type includes connecting the posts to the bus with respective locking pins so that the posts extend outwardly from the bus. Each locking pin engages a lower open end of a post and extends int... | 02/12/2002 |
| 6305209 | Workpiece blanking apparatus A workpiece blanking apparatus has a die, a pad for holding a plate of metal on the die, a blanking punch for depressing the plate on the die downwardly of the die to blank a workpiece out of the plate, and a counterpunch vertically movably disposed in th... | 10/23/2001 |
| 6134938 | Forming tools Forming tools includes an upper holder; a lower holder; a punch having a punch body which can be attached to/detached from the upper holder and the lower holder; an ejector being disposed movably in a vertical direction around a convex portion provided on... | 10/24/2000 |
| 6082165 | Collar hole die A collar hole die for forming a hole in brass headers used in radiators with a collar around the periphery of the hole. The collar hole die includes a body with top and bottom faces, and an outer side. The body has a center bore extending therethrough bet... | 07/04/2000 |
| 5501092 | Die-punch machine A die-punch machine capable of directly supplying a machining oil to an end section of a punch and to a workpiece to be machined. A first member holds the punch, and a second member is capable of relatively moving to and away from the first member. A die ... | 03/26/1996 |
| 5301533 | Cam operated pierce apparatus 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 ... | 04/12/1994 |
| 5226306 | Bead forming metal die for forming metal gasket A progressive bead forming metal die for forming beads in a metal gasket is constituted by a bead-forming die disposed between a hole punch die and an outer profile punch die. The bead-forming die comprises a pair of upper and lower inner bead boundary ba... | 07/13/1993 |
| 4879894 | Press with movable workpiece support carrier A press having a work positioning carriage for moving a workpiece horizontally along relatively transverse X and Y axes to position different areas of a workpiece at a work station. Lower forming tools are fixed at the work station and a lower stripper is... | 11/14/1989 |
| 4718970 | Apparatus for stress relief and edge sealing of welded joints in plastic parts In order to stress relieve exposed portions of plastic welds, and thereby reduce susceptibility of such welds to solvent-induced crazing and cracking, the welded parts are formed with flanges extending outwardly therefrom. These flanges are at least parti... | 01/12/1988 |
| 4590780 | Process and apparatus for producing at least two forgings on a hot-forming press Starting from a pre-heated bar, there is sheared-off first a portion (41) which, in a first forming stage of the machine, is formed into a tier shaped pressed article. In the second forming stage, the pressed article is further formed so that it has an in... | 05/27/1986 |
| 4586360 | Method of and apparatus for the fine cutting (punching) of articles Fine die stamping of workpieces from sheet metal is effected by clamping the workpiece between a die plate and guide plate, supporting the portion of the material to form the article by an ejector which is displaced along with the punch, and driving the s... | 05/06/1986 |
| 4516420 | Shell tooling A method and apparatus for forming end panels or shells for two-piece cans includes incorporation of the tooling necessary to form the panel within a double acting press. The tooling includes a fluid actuated hold down sleeve, carried by the outer slide o... | 05/14/1985 |
| 4510786 | Method and apparatus of making double reverse corrugated material A method of making double reverse corrugated material includes feeding the material between an upper die and a lower die. Each of the dies have laterally spaced projections and a stripper positioned in the spaces between the projections of the die. One di... | 04/16/1985 |
| 4442691 | Double action press having floating punch A double action mechanical press, especially for performing a blanking operation and a forming operation on each cycle thereof, having a first slide and a second slide, wherein the slides have separate strokes. The slides are reciprocated by means of a cr... | 04/17/1984 |
| 4429560 | Apparatus for making a transition plate for a mine roof truss Apparatus and method for making a transition plate for a mine roof truss from a strip of metal includes a die set having a first and second station. In the first station the strip of metal is bent downwardly at its sides, a notch is sheared in both sides ... | 02/07/1984 |
| 4118968 | Self cleaning progressive fin die with improved stripping means A progressive fin die having means for preventing metal particle buildup around the punch with the means stripping the workpiece from the punch. A plurality of draw punches are arranged with decreasing diameters in a row. A ram is movable to and from the ... | 10/10/1978 |
| 4096727 | Punching, stamping and rivetting apparatus A hydraulic punch press having a base adapted to receive a workpiece and a cylinder axially disposed opposite to the base. The cylinder includes a first and second piston slidable defining within its interior, a first chamber formed between the surface of... | 06/27/1978 |
| 4077246 | Percussion cap forming tool A small percussion cap making tool consisting of a Cutter and a Cutting Block. The Cutter is multi-toothed with an internal forming cone, a shoulder to release the finished caps and a cap exit passage. The Cutting Block has a guide for the Cutter, a mater... | 03/07/1978 |
| 4073176 | Piercing and flanging apparatus Apparatus is provided for piercing and flanging a metal workpiece. The apparatus includes a punch and a back-up die with the punch driven by a hydraulic ram. The punch, die, and ram are mounted on a frame which is movably carried by a main support. A work... | 02/14/1978 |
| 4055067 | Method and a punch/die assembly for the production of heat exchanger fins A method of producing heat exchanger fins, comprising the steps of perforating an aperture of a small diameter in a predetermined portion of a sheet material, while simultaneously forming a perpendicularly projecting cylinder of a diameter smaller than th... | 10/25/1977 |
| 3995469 | Self cleaning progressive fin die with improved stripping means A progressive fin die having means for preventing metal particle buildup around the punch with the means stripping the workpiece from the punch. A plurality of draw punches are arranged with decreasing diameters in a row. A ram is movable to and from the ... | 12/07/1976 |
| 3943745 | Piercing and coining apparatus Apparatus for piercing and coining a metal workpiece is provided. The apparatus includes a punch and a back-up die which accomplish the piercing, and a coining die located around the punch and movable with respect thereto to accomplish the coining. The pu... | 03/16/1976 |
