Class 72/401 - Between generally opposed-stroke tools

Subclass of Class 72 - Metal deforming
Definition: Device wherein two or more of said movable tools are arranged
No. of patents: 35
Last issue date: 08/21/2007

Number	Title	Issue Date
7257982	Apparatus for forming a beam member used as a torsion beam for the rear wheel suspension of an automobile An apparatus for forming a beam member for a torsion beam in a rear wheel suspension system of an automobile wherein said apparatus includes top and bottom dies for forming a U-shaped or V-shaped section and an extension section of the beam member, upper and lower p...	08/21/2007
7237424	Split die for forming grooved workpiece A method of forming a radially expandable externally grooved tubular fastener from metal, comprising the steps of providing a suitable tubular blank (11) having a tubular wall (12) and squeezing the tubular wall between an internal member (17) w...	07/03/2007
7210325	Tube thread forming apparatus and method A tube partial thread forming apparatus and method is disclosed. A tube is placed on the apparatus around internal die sections, which are separated by a mandrel to cause the internal die sections to engage the tube. stripper pieces are moved into engagement around ...	05/01/2007
7000448	Compression tool jawarm member A pivotal jawarm for a compression tool has opposite sides, a pivot pin opening therethrough, longitudinally opposite ends on longitudinally opposite sides of the opening, and inner and outer edges between the ends and on laterally opposite sides of the opening. A s...	02/21/2006
6457343	Tubing swaging machine A tubing swaging machine comprising four coplanar hydraulic cylinders which compress the end of a piece of tubing around a central mandrel. The central mandrel has indentations and is reciprocated by a fifth hydraulic cylinder perpendicular to the plane o...	10/01/2002
6095507	Pneumatic clamp A clamp having a pneumatic cylinder with an actuating rod connected to one end of a drive arm which has its other end attached to a crankshaft which in turn has crankpins eccentrically mounted thereon to drive inner and outer clamp arms between retracted ...	08/01/2000
5778721	Tooling machine for reshaping workpieces Machine tools are known, for forming workpieces, such as sheet metal, with tooling made of two tool halves arranged on opposite sides of the workpiece to be formed. One half of the tooling has at least one pressure element that can move against the workpi...	07/14/1998
5526670	Process and device for shaping the end of a tube with an oblong cross-section to a circular cross-section A process and device for shaping the end of a tube with an oblong cross-section to a circular cross-section, where the shaping occurs in a single radial compression stage from the exterior. The tube is disposed with its shortest axis in correspondence wit...	06/18/1996
5377400	Jointing clamp and method for pressing pipe connections A jointing clamp for pressing pipe connections, particularly for pipes of composite materials, includes two pressure clamps, each of which carries a form part of a form insert and which are connected with one another by connecting plates that are disposed...	01/03/1995
5351518	Four slider apparatus for forming curved rectangular bodied needles and method An apparatus for forming a curved, flat sided surgical needle, which comprises a frame member including an anvil member having an arcuate surface profile; a movable first die member for simultaneously imparting an arcuate profile and at least a pair of fi...	10/04/1994
5335531	Compression tool head assembly A head assembly for a compression tool including a pair of opposite, rotatably mounted jaw members. Each jaw member having a compression end which is moveable between a first position in engagement with the compression end of the opposite jaw member and a...	08/09/1994
5307664	Jointing clamp for pressing pipe connections A jointing clamp for pressing pipe connections, particularly for pipes of composite materials, includes two pressure clamps, each of which carries a form part of a form insert and which are connected with one another by connecting plates that are disposed...	05/03/1994
5257524	Method and device for manufacturing pipe bends The method for manufacturing a pipe bend from a straight pipe piece by means of actuating members acting on the outside of the pipe piece and making an open shaping station, the diameter of the actuating members being expandable and compressible under the...	11/02/1993
5216913	Bending machine for skein-shaped material The guideway for each working carriage has a predetermined parking position in a bending machine for skein-shaped material, in which several working carriages can be adjusted in positions determined by a bending program in a working plate and which compri...	06/08/1993
5179855	Film magazine forming apparatus A film magazine forming apparatus forms a sheet having printing on a side thereof into an almost cylindrical shape. The film magazine formed into the almost cylindrical shape has separated lip portions for enabling a film to mvoe therethrough. The lip por...	01/19/1993
5160108	Process and tool for producing a barrel for a telescopic universal transmission joint A barrel to be formed has internal tracks of circular profile which abut ridges (4). The process starts with a sheet-metal blank which is arranged around an inner shaping mandrel equipped with protuberances integral or rotatably attached and defining shap...	11/03/1992
5062289	Bending tooling for bending flat blanks Stamping and forming apparatus (54) has a bending station in which blanks (28,28'), which extend from the two side edges of strip material (4), are reversely bent (180) degrees in opposite directions so that the end portions (36a,36a') of the reversely be...	11/05/1991
4924586	Automated forming apparatus To form longitudinally spaced pairs of angularly spaced stops in the walls of fuel rod-positioning ferrules utilized in nuclear fuel bundle spacers, the ferrules, cut from tubular stock, are longitudinal oriented in a first station and angularly oriented ...	05/15/1990
4899571	Apparatus for drawing-in a pipe end by cold forming An apparatus for drawing-in a pipe end by plastic cold forming includes a clamping body. An annular body disposed on the clamping body has an inner surface and a center. An internal tool in the form of a stop ring is centrally supported on the clamping bo...	02/13/1990
4576031	Quick disconnect arbor and die head for tube stock sizing apparatus A quick disconnect arbor and die head for a tube stock sizing apparatus. A plurality of arbors and die heads are slidably mounted to a tube stock sizing apparatus and are respectively urged into engagement with the inwardly facing and outwardly facing sur...	03/18/1986
4531396	Forging die package A die package for forming a central disc structure having a plurality of integrally formed appendages extending therefrom includes a cylindrical array of appendage forming, abutting die segments which are prevented from tilting or moving in a circumferent...	07/30/1985
4470289	IC Pin adjustment tool An IC pin adjustment tool includes a pair of side arms and a center portion disposed between the side arms. The side arms are hingedly mounted on the center portion at one end thereof, and biased outwardly away from the center portion by spring means atta...	09/11/1984
4429561	Mandrel for cold forging internally profiled tubes or cylinders A mandrel for the production of internally profiled, specially threaded tubes or cylinders (2) by the cold forging of tube shaped forging blank (2) around a profiled mandrel (3) by cold forging the workpiece (2) from its one end to the opposite end. The t...	02/07/1984
4428220	Method and tool for the cold forging of internally profiled tubes A method and tool for cold forging or cold hammering of internally profiled tubes, whereby a forging blank (2) is while rotated, forged by the action of a number of forging hammers (4), whereby the workpiece (2) as a result of material displacement is for...	01/31/1984
4389870	Forming engagement grooves in a tool shank In the formation of engagement grooves in the shank of a tool for use in a hammer drill or chipping hammer, a matrix or die is divided along a junction plane into two matrix halves. A bore for holding the tool to be punched is formed along the junction pl...	06/28/1983
4380165	Squeezer flanger To prevent fold formation when arranging a circumferential flange and a circular constriction adjoining the same, the material of the sleeve body is locally arrested under a sufficient clamping force between the inner and outer segments of a deformation d...	04/19/1983
4252011	Die assembly for use in forging operation The present invention provides a technique for improving the dimensional accuracy of forged components. Uniformity of like component details is sought and a specific object is to provide a die package for forming closely toleranced appendages integrally w...	02/24/1981
4236295	Method of making rotor coil of coreless motor A method of making cylindrical rotor coil for use in coreless motors is provided whereby the coil is of a reduced thickness with compressed coil turns enabling the stator magnetic gap distance to be reduced, thus enabling a higher flux density to be utili...	12/02/1980
4229962	Method for reconditioning rivetless chain links The pitch of worn chain links is restored to original manufacturers' dimensions by decreasing their overall lengths. Concentrated heat is applied across a selected section at the center area of a link, and force is applied longitudinally to the ends of th...	10/28/1980
4205544	Apparatus for bending corrugated pipe Corrugated pipe is bent by pinching the spiral corrugations on one side of the pipe to decrease their pitch and increase their amplitude as compared to the undeformed corrugations on the opposite side of the pipe, thereby shortening the pipe on one side. ...	06/03/1980
4157026	Swaging machine for swaging large tubes First and second gripping heads consisting of a manipulator and a holder-up, respectively, are disposed on opposite sides of a swaging box. First and second sleeves are rotatably mounted in said first and second gripping heads, respectively and aligned on...	06/05/1979
4154082	Manufacture of yokes for dynamo electric machines A method of manufacturing a yoke for a dynamo electric machine wherein a transversely divided two-part mandrel is inserted into a hollow ferromagnetic sleeve of wall thickness and diameter equal to that of the required yoke. The mandrel defines the shape ...	05/15/1979
4088001	Method of manufacturing a strut member made of a tube material for use with drum brakes An improved method of manufacturing a strut member for use in a strut device of the drum brake, having two strut members and a connecting member provided with a threaded portion for linking both, to function as an adjustor of the shoe clearance. This manu...	05/09/1978
4074408	Method for making vehicle wheel assembly A vehicle wheel assembly and method and apparatus for making the assembly in which an outer tire rim and wheel center are fabricated into a secure one-piece unit. Secure attachment and restraint of the two components into one unit are accomplished through...	02/21/1978
3939553	Method of manufacturing a trailer frame structure A chassis and tilt bed support structure for a tilt bed trailer, with the chassis being comprised of a pair of elongated frame beams widely spaced apart at their rear ends by a distance substantially coinciding with the axle length and bent inwardly towar...	02/24/1976

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Class 72/401 - Between generally opposed-stroke tools