Class 72/276 - Producing a non-uniform product

Subclass of Class 72 - Metal deforming
Definition: Subject matter which functions to form a relatively rigid
No. of patents: 35
Last issue date: 08/19/2008

Number	Title	Issue Date
7412866	Tubular articles with varying wall thickness and method of manufacturing same A method for manufacturing a one-piece axle tube housing with localized sections of increased wall thickness includes providing a tube blank, inserting a mandrel having a reduced diameter profile, passing the tube through an extrusion die to conform the tube to the ...	08/19/2008
7334312	Method of forming axles with internally thickened wall sections A method for forming a variable wall thickness axle or tube with internally thickened wall sections comprises extruding a tubular metal blank within an elongated die. An elongated punch pushes the blank through the die. The punch has an end abutting and pushing the ...	02/26/2008
7328599	Method and apparatus for making metal ball bats A process for manufacturing a hollow metal ball bat includes forming a shell into a tubular shape using a pilger mill. The wall thickness of the tube shell is reduced by drawing the tube shell with the draw bench. A handle section and a taper section are created usi...	02/12/2008
7290424	Push bench method for manufacturing small diameter tubing The present invention involves cost effective, efficient systems and methods for sizing pipe. In an embodiment of the present invention, a pipe sizing system includes a die having an opening operable to size the pipe, a hydraulic cylinder having at least one rod att...	11/06/2007
7273026	Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i...	09/25/2007
7240728	Expandable tubulars with a radial passage and wall portions with different wall thicknesses A tubular liner including a first tubular portion, a second tubular portion, and an intermediate tapered tubular portion coupled to, and positioned between, the first and second tubular portions. ...	07/10/2007
7114362	Method of making metal workpiece A method for draw forming a desired contour to the outer diameter of a tubular work piece provides that the selected work piece have a wall thickness uniform throughout its length. The outer diameter of selected work piece is reduced along essentially only a part of...	10/03/2006
7090309	Variable wall thickness trailer axles An axle assembly is provided having a varying wall thickness resulting in an axle assembly that is lightweight yet has sufficient strength and stiffness. The axle assembly includes a tube disposed about a longitudinal axis and having first and second end portions an...	08/15/2006
7063142	Method of applying an axial force to an expansion cone A method of applying an axial force to a first piston positioned within a first piston chamber including applying an axial force to the first piston using a second piston positioned within the first piston chamber. ...	06/20/2006
7044221	Apparatus for coupling a tubular member to a preexisting structure An apparatus for coupling a tubular member to a preexisting structure. ...	05/16/2006
7040396	Apparatus for releasably coupling two elements An apparatus for coupling two elements including an outer tubular member defining one or more outer tubular member slots, an inner tubular member defining one or more inner tubular member slots positioned within the outer tubular member, and a coupling assembly for ...	05/09/2006
6966370	Apparatus for actuating an annular piston An apparatus comprising a first tubular member; a second tubular member positioned within and coupled to the first tubular member; a first annular piston chamber defined by the space between the first and second tubular members; an annular piston movably coupled to ...	11/22/2005
6872061	Method for making a moineau stator and resulting stator The invention concerns a Moineau type gear pump stator (1), comprising a stator cavity with global axial extension inside an elongated body, characterised in that the stator cavity is defined by a rigid-walled metal tubular element (3) having internall the shape and...	03/29/2005
6807837	Method and apparatus for producing variable wall thickness tubes and hollow shafts A method and apparatus for draw forming, from a tubular workpiece, a tube or hollow shaft having a variable wall thickness, using a reducing die without an internal mandrel. A tension force is applied to the workpiece at one axial side of the die and a compression f...	10/26/2004
6735998	Method of making metal ball bats A method for draw forming a desired contour to the outer diameter of a tubular workpiece provides that the selected workpiece have a wall thickness uniform throughout its length or a combination of uniform thicknesses at end portions with a mid portion of a tapering...	05/18/2004
6702039	Perforating gun carriers and their methods of manufacture The subject matter of the present invention relates to perforating gun carriers and their methods of manufacture. In one embodiment of the present invention, high strength, uniform wall thickness carriers are manufactured through use of the electric resis...	03/09/2004
6647755	Method for manufacturing small diameter medical devices An apparatus and method for manufacturing small diameter ultrasonic probes capable of vibrating in a transverse mode that can be used in ultrasonic tissue ablation. The apparatus includes a die, a style puller which is used to engage a functional end of t...	11/18/2003
6568076	Method of making an internally profiled stator tube A method of manufacturing a thick walled Moineau-style stator entails drawing a thick walled tube through rotatable internal and external dies to form a helical outer profile including crests and through on the tube. The tube initially has one end with a ...	05/27/2003
6134937	Golf club and shaft therefor and method of making same A golf club 20 includes a shaft 22 having a club head 32 secured to a tip end section 24 thereof and a grip 34 secured to a butt end section 26 thereof. A central section 28 of the shaft 22 is formed with a plurality of segments 44 which are of successive...	10/24/2000
5119661	Apparatus for manufacturing profile pipes used in well construction The method resides in profiling a part of a cylindrical pipe by drawing it through a moulding device, and reducing the pipe over its entire length for the diameter of the cylindrical part of the pipe to be substantially equal to the diameter of the circum...	06/09/1992
4846392	Continuously variable speed, die-drawing device and process for metal, composites, and the like, and compositions therefrom A die-drawing and/or extrusion device is described for producing uniform and tapered metal and composite tubes from flatstock and for reducing the size of solid stock and formed tubes therefrom, and lamination of compatable materials in one operation. The...	07/11/1989
4737216	Method of fabricating disposable roller for use in xerographic copier machines A roller is characterized by an inexpensive and disposable construction for use in transporting and applying developer material in a developer system of a xerographic copier machine, and a method of fabricating such rollers. The rollers have an outside el...	04/12/1988
4726211	Method of cold drawing seamless metal tubes each having an upset portion on each end A method of cold drawing seamless metal tubes each having an upset portion on each end. A draw bench used for carrying out the method of this invention comprises a die control device, a plug control device including a plug having large and small diameter ...	02/23/1988
4622840	Method for drawing telescoping tubes for torque transmission An improved telescoping torque transmitting connection and a method for making tubes used in the formation of this connection are disclosed. The tubes are formed with inwardly extending lobes and the lobes are formed so that the wall thickness of the tube...	11/18/1986
4616500	Method for producing tubing of varying wall thickness A method for producing tubing of variable wall thickness, and particularly for producing double-butted tubing, wherein the wall thickness or gage at the ends of the tube is greater than that in the intermediate portion of the tube. This is accomplished by...	10/14/1986
4606212	Device for cold drawing seamless metal tubes having upset portions on both ends A draw bench for cold drawing seamless middle tubes having upset portions on both ends. The draw bench includes a die control device, a plug control device including a plug having large and small diameter bearing portions and a draw unit. The die control ...	08/19/1986
4557129	Multiple tooling roll forming machine with turret type rotary motion In a roll forming machine having a base, a motor drive, a gear drive transmission connected to the motor drive and a plurality of vertically aligned longitudinally spaced pairs of complimental pass forming rolls of progressive different shapes respectivel...	12/10/1985
4551896	Method of manufacturing a rotor for a rotary fluid pump A method of forming a rotor for a vane-type rotary pump. The rotor is generally cylindrical with a plurality of vane slots. A tubular member having generally flat sections separated one from the other by corner portions is formed into the rotor by forming...	11/12/1985
4534199	Method and apparatus for produced stepped tubes A method of producing a stepped tube, the method including the steps of preparing a straight mother tube with a stepped wall portion of a smaller inside diameter on the inner periphery thereof at a predetermined position in the longitudinal direction of t...	08/13/1985
4514997	Tube corrugating die A novel metal tube corrugating die comprises a hollow die body with a plurality of die teeth in an internal cavity. The die teeth are flat with a curved edge extending diagonally into the die cavity providing a die corrugating tooth surface extending inwa...	05/07/1985
4476704	Method for producing finned tubes A finned tube for a heat exchanger has an inner surface in which is provided raised portions which are in rows and extend in the longitudinal direction of the tube. The raised portions are arranged, within each row, at irregular intervals and each raised ...	10/16/1984
4439256	Method of producing flat stranded magnetic conductor cable A cable comprised of coated conductors, wound together and compacted, has an insulating strip interposed between the two layers in which the conductors are disposed, to ensure good insulation therebetween. Apparatus for producing the cable includes a stra...	03/27/1984
4425942	Finned tube for a heat exchanger A finned tube for a heat exchanger has an inner surface in which is provided raised portions which are in rows and extend in the longitudinal direction of the tube. The raised portions are arranged, within each row, at irregular intervals and each raised ...	01/17/1984
4313328	Providing cardan and universal joint-type shafts with gearing A hollow, tubular blank is provided with annular, radially inwardly and/or outwardly extending protrusions by means of rolling or upsetting. These protrusions are provided with gearing teeth by means of an annular drawing die and a plug, one of these or b...	02/02/1982
4037445	Method and apparatus for production of multiple gauge strip Multiple gauge metal strip is prepared by a process which comprises first shaving said strip by a process comprising drawing said strip through a shaving apparatus adjusted to achieve maximum stock removal in relation to the yield strength of said strip w...	07/26/1977

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Class 72/276 - Producing a non-uniform product