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| Number | Title | Issue Date |
| 7895874 | Near net shape forging process for compressor and turbine wheels and turbine spacer wheels A method of forging a workpiece includes (a) incrementally advancing the workpiece in a closed die forge, the closed die forge including a stationary, flat die and a first split die including a plurality of first die segments, each die segment being incrementally ad... | 03/01/2011 |
| 7861570 | Stent with improved drug loading capacity The present invention provides a method of forming a drug eluting stent, the method comprising coupling a stent framework to a mandrel, inserting the mandrel with stent framework into an open die, the die including a forming surface including a plurality of raised i... | 01/04/2011 |
| 7055359 | Method for forging/molding a coarse blank of an oil cylinder A method for forging/molding a coarse blank of an oil cylinder, including steps of: placing burn-in softened aluminum material into a preheated mold; using a first punch head to first forge the aluminum material in the mold cavity from outer side of the molding hole... | 06/06/2006 |
| 7055237 | Method of forming a drug eluting stent The present invention provides a method of forming a drug eluting stent, the method comprising coupling a stent framework to a mandrel, inserting the mandrel with stent framework into an open die, the die including a forming surface including a plurality of raised i... | 06/06/2006 |
| 7043955 | Forging die apparatus A forging die apparatus comprises a punch for applying a pressurizing force to a forging material arranged in a cavity, a cylindrical member installed to surround a part of outer circumference of the punch, for making displacement integrally with the punch, and a fi... | 05/16/2006 |
| 7007537 | Clam shell system A work piece has an interior cylindrical component. The interior cylindrical component is composed of a beam. The beam is adapted to apply pressure to remove the work piece. An intermediate cylindrical component has four radial spaced cylindrical control arms, an in... | 03/07/2006 |
| 6915676 | Method of forming a protruded shaft for an electronic memory device In a method of forming a protruded shaft on a metal base for an electronic memory device, the metal base is pressed down with a pressing tool from upper face side of the metal base placed on a die. The die is provided with a hole having a predetermined inner diamete... | 07/12/2005 |
| 6626021 | Engine oil pan and forming method and apparatus An oil pan includes an oil reservoir and a pair of side walls facing the reservoir. A bulge is formed in each side wall. Each bulge defines an oil sub chamber connected to the oil reservoir. The bulges are formed integrally with the side walls by deformin... | 09/30/2003 |
| 6581432 | Upsetting device A device for upsetting a workpiece has a frame, a head for movement in a first direction toward the frame, and first and second tool holders between the frame and the head for holding dies for the upsetting. A parallelogram linkage mechanism supports the ... | 06/24/2003 |
| 6485371 | Grooved nut and manufacturing method thereof A grooved nut including a cylindrical shaft portion having a screw hole at the center, a head portion whose outer periphery is polygonal and which is provided at one end portion of the shaft portion, and a peripheral groove provided at a boundary part bet... | 11/26/2002 |
| 6477883 | Die block apparatus for shaping workpieces A die block apparatus for shaping workpieces by way of die stamping includes a die block (40), a first sliding block (10), a second sliding block (30), and a stopper block (50). The die block is dimensioned to receive the first and second sliding blocks a... | 11/12/2002 |
| 6427302 | Crimping die employing powered chuck A forming die includes a base and at least two die segments. At least a first one of the die segments is moveably mounted to the base for shifting between closed and opened positions. The die segments together define a cavity having an opening when the fi... | 08/06/2002 |
| 6397652 | Tool body and method of manufacture A tool body is cold formed by inserting a blank into a die which defines a portion of the outer surface of the tool body after which a punch applies an impact to the blank causing the outer surface of the blank to conform to the contour defined by the die... | 06/04/2002 |
| 6370933 | Die and method for reducing controlling the formation of flash on parts A die for reducing the formation of flash on parts includes a first die section and a second die section defining therein a cavity. The first die section includes a pair of first surfaces and the second die section includes a pair of second surfaces which... | 04/16/2002 |
| 6256853 | Crimping die employing powered chuck A forming die includes a base and at least two die segments. At least a first one of the die segments is moveably mounted to the base for shifting between closed and opened positions. The die segments together define a cavity having an opening when the fi... | 07/10/2001 |
| 5946966 | Upset forging machine assembly having a quick change header A upset forging machine assembly (20) including a pair of gripper dies (22, 24) for gripping forging stock in a closed position and movable to an open position for receiving stock and removing a forged part. A gripper drive mechanism (34) moves the grippe... | 09/07/1999 |
| 5813272 | Apparatus for full enclosed die forging The invention provides an apparatus for full enclosed die forging having a stationary die, a movable die toward and away from the stationary die and punches which plunge into a work in the closed dies to form tools. After the stationary die in the die hou... | 09/29/1998 |
| 5642640 | Back extrusion process for forming a manifold port A method for forming ports on a heat exchanger manifold, in which risers are back extruded in a single operation from the surrounding material of the manifold such that subsequent machining steps to further define and finish the port are unnecessary. The ... | 07/01/1997 |
| 5606887 | Apparatus and method for cold forming an L-shaped lead alloy battery terminal A method and apparatus to cold form an L-shaped lead battery terminal. The apparatus includes a forming station for cold forming an L-shaped lead battery terminal having a tower offset from the head. The forming station includes a split die for forming a ... | 03/04/1997 |
| 5575172 | Device for producing hollow bodies according to an internal high pressure metal forming process A device for producing a hollow body according to an internal high pressure metal forming process has a tool which is divided along a mold joint into a stationary tool part and a liftable tool part. The tool has an impression for receiving a tube-shaped b... | 11/19/1996 |
| 5547424 | Method and an apparatus for making an elongate object In a method of making an elongate object (49) with a head at one end and a point at the other end, a blank (49) is placed in a die (50) having a through-going channel, following which the head end is subjected to axial pressure by a tool (52), while a sto... | 08/20/1996 |
| 5493888 | Precision forming apparatus, method and article Precision forming apparatus is disclosed. The apparatus comprises a die with a cavity which conforms with the shape of a portion of a part to be formed, a punch with a cavity which conforms with the shape of another portion of the part to be formed, and m... | 02/27/1996 |
| 5425170 | Side wall electrical battery terminal A cold formed side wall terminal for a storage battery, the terminal being formed from a lead slug having a cavity at one end, a stainless steel nut positioned in the cavity and encapsulated therein on cold working the lead slug, the terminal further incl... | 06/20/1995 |
| 5419791 | Method of heat assisted sheet metal forming in 360 degree shapes This is a method for heat assisted forming, annealing, and hardening 360° sheet metal shapes in a clean environment in a single facility that results in dimensionally correct, cost-effective, contaminant free parts.... | 05/30/1995 |
| 5365765 | Method and apparatus for simultaneously upsetting the ends of a cylindricl blank A punch press assembly (20) simultaneously upsets two ends (22) of a cylindrical blank (24) to produce a chain pin (34) having an extruded grain structure (134) which extends parallel to its longitudinal axis (B) into the upset regions of the chain pin (3... | 11/22/1994 |
| 5349840 | Method of making a high torque battery terminal A battery terminal with high torque resistance utilizing three sided frusto-conical recesses and mating protrusions extending from the battery terminal and method of making the terminal by a cold forming process that forms a finished battery terminal from... | 09/27/1994 |
| 5237850 | Conveyor rollers and manner of their manufacture A method of reducing the end portion of a pipe to a smaller diameter of exact and smooth dimensions for fitting therein a roller contact bearing comprises the steps of; inserting into the end to be reduced a mandrel of an outside diameter coextensive with... | 08/24/1993 |
| 5218853 | Single-cycle closed die metal forging method An apertured part is pressed in a single cycle with no separate slug shearing operation. The press ram and bolster each contain fixed aperture forming punches which extend coaxially and slidably through piston like die supports, each of which is backed by... | 06/15/1993 |
| 5211046 | Method for forming multistage hollow pipe An apparatus of and a method for forming a multistage hollow pipe comprising the steps of arranging a hollow pipe on a plurality of molds composed of an upper mold, first, second, third forming molds for subjecting the hollow pipe to drawing process, axia... | 05/18/1993 |
| 5140735 | Die member for attaching a self-piercing and riveting fastener An improved die member and method of attaching a self-piercing and riveting fastener to a panel wherein a slug pierced from the panel by the riveting fastener is securely staked in the tubular riveting portion of the fastener during the installation of th... | 08/25/1992 |
| 5090611 | Method of making a cross joint between pipes An improved method of making a cross joint between different size pipes is provided. A punch, die and a pressing machine are prepared. The punch includes a center rest for receiving a small pipe, a curved slot and a curved surface for transforming an end ... | 02/25/1992 |
| 5088399 | Apparatus for compacting scrap metal Pressing apparatus comprising a die made up of a number of segments defining a cavity in which metal swarf is compacted to form a billet. The die segments are held together by one or more sleeves housed in a housing which is mounted on a pedestal which pi... | 02/18/1992 |
| 4910990 | Apparatus for making substantially forged articles such as tank tread connectors A billet (10) is pressed with a first blocking punch (36, 38). Thereafter, the billet is rotated approximately 90°. A second punch (50) is pressed against the billet while a split ring die assembly (58) substantially surrounds the billet and constrains o... | 03/27/1990 |
| 4848129 | Method for making substantially forged articles such as tank tread connectors A billet (10) is pressed with a first blocking punch (36, 38). Thereafter, the billet is rotated approximately 90°. A second punch (50) is pressed against the billet while a split ring die assembly (58) substantially surrounds the billet and constrains o... | 07/18/1989 |
| 4838062 | Process for upset forging of long stands of metal bar stock Process and apparatus for upset forging a long stand of solid malleable metal bar stock in a single pass is capable of gathering a large volume of the bar stock into a complex shaped element. The end of the bar stock is selectively heated to provide an in... | 06/13/1989 |
| 4779444 | Closed die forging machine A closed die forging machine is disclosed in which the dies are clamped in their closed position by a hydraulically operated piston and cylinder means. A spacer is positioned between the clamping means and the movable die during the forging operation. Sub... | 10/25/1988 |
| 4757703 | Die apparatus for handling tubing having a radially projecting annular flange A die apparatus operable to form or to clamp a tube with an upset annular flange includes a pair of opposed die members mounted for horizontal movement toward and away from each other at opposite sides of a fixed path along which the tube is axially fed w... | 07/19/1988 |
| 4693109 | Self-aligning tool assembly for die shaping workpieces A tool assembly for shaping workpieces, which comprises a reciprocable punch having a working end engageable with a die to shape a workpiece therebetween. The punch is mounted at its driven end on a reciprocable punch actuator and extends through a floati... | 09/15/1987 |
| 4646551 | Apparatus for forging of crankshafts in presses An apparatus for forging crankshafts comprises a base which consists of beams 4 and cross-members 12 and 25. The head 3 of the device is designed for reciprocal movement in relation to the base. Between head 3 and parts 4 and 25 of the base there is a pai... | 03/03/1987 |
| 4638538 | Method of manufacturing wound bush bearing with notch-free flange and mold assembly for manufacturing the same A bearing is manufactured by applying an axial pressing force to a cylindrical wound bush and thereby forming a notch-free flange at one end of the bush which is tapered previously. The flange is formed through a kind of plastic flow induced in the tapere... | 01/27/1987 |
