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| Number | Title | Issue Date |
| 7908748 | Rack and pinion type steering device and method of manufacturing the same A rack and pinion type steering device capable of reducing contact surface pressure, suppressing the wear of contact surfaces, and preventing a rack guide movable amount from being excessively increased by increasing the contact area of the outer peripheral surface ... | 03/22/2011 |
| 7424817 | Method of working recessed portion in headrest stay and press apparatus for working recessed portion in headrest stay In a method of working a recessed portion 2 in a headrest stay 32 which is provided in the stay portion 32 of the headrest stay 3 formed of a pipe, a recess 2′ is preformed by pressing against the stay portion 32 an outer ... | 09/16/2008 |
| 7350391 | Method for manufacturing clutch housing A method for manufacturing a clutch housing comprises: a first step of forming a work into a pre-product having a shaft portion and an outer drum portion enclosing the shaft portion integrally with the shaft portion; a second step of subjecting the pre-product to pr... | 04/01/2008 |
| 7334444 | Method for producing a gearwheel A method is described for producing a gearwheel from a powder-metal blank which is pressed and sintered with an allowance in the toothing region, with the powder metal blank supported on a mandrel being densified in the region of the allowance by pressing on counter... | 02/26/2008 |
| 7267024 | Gear, and method and apparatus for manufacturing the same An idler gear having a part worked by cutting is formed such that a chamfer part is formed at least on a portion between a tooth shape and chamfers are formed on the tooth shape by a forging process on an outer peripheral surface and an end part thereof in an axial ... | 09/11/2007 |
| 7207110 | Differential housing with integrated ring gear A method is disclosed for making a differential housing having a ring gear integrally formed therein. The method includes the steps of forging a conical frustum from a steel rod; deforming the frustum between upper and lower die halves of a tool to produce a differe... | 04/24/2007 |
| 7160351 | Powder metal clutch races for one-way clutches and method of manufacture A method of fabricating clutch races for one-way clutch mechanisms includes compacting and sintering a ferrous-based powder metal to near-net shape to produce a core density of between about 6.8 to 7.6 g/cc and a race surface that is near-net shape. The cam surface ... | 01/09/2007 |
| 7152446 | Method of forming internal gear, and internal gear At the time for forming an internal gear from a raw material 2 of an internal gear, first, the raw material 2 is externally inserted onto a forming die 3 and fixed to the forming die 3 through a pressing die 4. Next, a forming roll... | 12/26/2006 |
| 7137312 | Gear wheels roll formed from powder metal blanks A method is disclosed for the manufacture of gear wheels having two axially adjacent gears (4,6) thereon. A blank is prepared with the two gears crudely formed thereon by compressing and sintering a shaped mass of substantially metal powder. The blank is then... | 11/21/2006 |
| 7055243 | Crankshaft damper with integral pulse ring and method The invention comprises a crankshaft damper having an integral pulse ring. The crankshaft damper comprises an inner hub and outer pulley with an elastomeric connecting member between each. The elastomeric ring dampens a crankshaft vibration. The integral pulse ring ... | 06/06/2006 |
| 7051611 | Method for producing a shaft and device containing one such a shaft A method for producing a shaft and a device containing such a shaft (22), in particular an armature shaft (22) of an electric motor drive (10), which shaft is held by at least one shaft bearing (43), includes forming a bearing surface ( | 05/30/2006 |
| 7047781 | Sheet metal member having an annular peripheral wall and a method of thickening an annular peripheral wall of the sheet metal member The present invention relates to a sheet metal member having an annular peripheral wall and a method of thickening an annular peripheral wall of the sheet metal member. The thickness of the annular peripheral wall is increased to be 2 or more times or 3 or more time... | 05/23/2006 |
| 7041149 | Sintered sprocket for silent chain and production method therefor A sintered sprocket has a high overall density and excellent contact pressure resistance. The sprocket is produced from a sintered alloy selected from the following alloys ((1) to (3)), is densified to have a relative density of 95% or higher in the surface layer of... | 05/09/2006 |
| 7040131 | Cold forming tool, machine and method Cold forming tool including at least one penetration zone having teeth and a calibration zone having teeth. The teeth having a tooth height that increases substantially from the at least one penetration zone to the calibration zone. A distance between an outer surfa... | 05/09/2006 |
| 7025929 | Method and apparatus for densifying powder metal gears The invention provides a method and apparatus for densifying the teeth of a powder metal preform gear. The die includes an aperture for receiving a body of the gear and a plurality of grooves for receiving the teeth of the gear. The grooves have a length and a varia... | 04/11/2006 |
| 7000949 | Steering column module A steering column connected to a vehicle electronic system having an electronic jack and a vehicle steering mechanism for a motor vehicle. The steering column includes a clock spring in electronic communication with a steering wheel. The clock spring includes a firs... | 02/21/2006 |
| 6976343 | Compressive flange sinusoidal structural member A sinusoidal structural member having a dual component flange is provided. In the preferred embodiment, the flange (both upper and lower) is comprised of at least two components. These two components can be produced by dividing the flange lengthwise; where the divis... | 12/20/2005 |
| 6939093 | Chamfer hob and method of use thereof A chamfer hob for and a method of providing a chamfered end and having an identical chamfer angle at both a front face and a back face of a gear including a shaft, a plurality of helical cutting vanes extending radially outwardly from the shaft, such that the radial... | 09/06/2005 |
| 6915673 | Method of rolling worm gear and the worm gear A worm is formed by rolling to reduce the number of processing steps while ensuring the worm accuracy satisfactorily. A work material is positioned between a first rolling die (100) and a second rolling die (101) by rotation of the rolling dies and a s... | 07/12/2005 |
| 6907764 | Methods and apparatus for manufacturing flanged articles Methods for manufacturing a flanged article (21) that comprises a central depressed body (27) and a peripheral flange (23) may include press forming a material (10) in order to form an intermediate flanged article (20) that compris... | 06/21/2005 |
| 6883358 | Method of producing sliding sleeves for gearshift mechanisms A method of producing a sliding sleeve for gearshift mechanisms includes two forming steps. In the first forming step a preform, which has been pushed onto a tool mandrel with an external toothing, is formed by roller spinning so as to form on the inner circumferent... | 04/26/2005 |
| 6868606 | Method and apparatus for making a rotation-symmetrical gear member In a method of making a rotation-symmetrical gear member, an outer edge of a circular blank is shaped to form a concentric thickened area which extends in axial direction to thereby realize a ring structure. A remaining area of the circular blank is then shaped into... | 03/22/2005 |
| 6779270 | Full form roll finishing technique A full form net shape roll finished contacting machine element such as a gear or sprocket is produced from a near net shape workpiece of wrought or forged steel including teeth with an initial outer peripheral contoured surface, each having a tooth flank with a nomi... | 08/24/2004 |
| 6729171 | Cold forming by rolling of parts made of press sintered material Method of cold forming a blank made of press sintered material which includes moving at least one tool towards the blank and subjecting the blank to rolling under a roughly constant load for a number of passes until the at least one tool reaches a chosen position. A... | 05/04/2004 |
| 6571475 | Method of chamfering and deburring gear teeth, device implementing such a method, and relative tool A method of chamfering and deburring the teeth of a gear having first teeth, each of the first teeth having a first and a second side and respective end faces; the method providing for meshing the gear with at least one tool having a ring gear meshing wit... | 06/03/2003 |
| 6530253 | Method for producing cylindrical member having spline grooves, and cylindrical member having spline grooves The disclosed method produces a spline-grooved cylindrical member, e.g. torque converter front cover, including a cylindrical portion having a target wall thickness t2, from a plate blank having a plate thickness t1. An outer peripheral portion of a disc-... | 03/11/2003 |
| 6494072 | Method of and device for forming a clutch gear toothing on gearwheels for change speed gears A method of manufacturing a gearwheel (10) by clutch gear tooth forming with an axial undercut and a roof-shaped entry geometry consists in causing the gearwheel blank to perform a rotating movement and to cause profiled shaping tools in the form of rolls... | 12/17/2002 |
| 6484401 | Gear part and method for forming a gear part A gear part and method is provided for forming a gear part, in which a circular blank-like workpiece is fixed in a flow-forming machine in a radially inner area, the circular blank-like workpiece is rotated, at least one roller is substantially radially m... | 11/26/2002 |
| 6470724 | Tool for producing a gear part having external toothing A tool for producing a gear part having external toothing using a method of shaping by compression or by rolling. Said tool comprises a receiving tool for supporting the work piece which is impinged upon by a projection. Said receiving tool is driven to p... | 10/29/2002 |
| 6367300 | Sprocket with thin body and grooved teeth A sprocket includes a body, and teeth formed on the peripheral edge of the body. The teeth have a thickness greater than that of the body. This design enables the use of the existing chain and brings about a reduction in the weight of the overall sprocket... | 04/09/2002 |
| 6357272 | Method and device for producing a toothed wheel There are described a method and an apparatus for producing a gear wheel from a powder metal blank (1) pressed and sintered with an overmeasure in the toothing area, which powder metal blank is compacted under a plastic deformation in the vicinity of the ... | 03/19/2002 |
| 6351886 | Method of manufacturing a speed gear Speed gear are manufactured by integrally molding, by either hot or warm forging, a speed gear section and a clutch spline section. Teeth of the speed gear in the speed gear section and an involute spline parallel to an axial line of the gear in the clutc... | 03/05/2002 |
| 6330836 | Steel for gear drive plate gear and method for producing the drive plate gear A steel for a gear which is formed on a drive plate gear includes; C: 0.32 to 0.38%, Si: 0.1% or less, Mn: 0.60 to 0.90%, P: 0.03% or less, and S: 0.035% or less.... | 12/18/2001 |
| 6279366 | Item with external teeth and method of forming the same Using a form roller in which a plurality of gear-like tooth generating sections are arranged along the rotation axis of the form roller in the outer periphery thereof to increase tooth heights of the tooth generating sections in a stepwise manner along th... | 08/28/2001 |
| 6253589 | Flow-turning device and method for producing internally geared wheels using two sets of internal toothing The invention relates to a flowturning device (1; 101) for producing an internal geared wheel (17) with inner toothing, one set of which is slanted. The workpiece (9) is held by a retaining member (16; 116) during shaping of the first inner toothing. The ... | 07/03/2001 |
| 6247376 | Rollable enveloped worm with two curve profile A drive gear engages a driven gear with non-intersecting axes of rotation making an angle of approximately 90° with respect to one another. A shaft has a first portion with a predetermined diameter, and a second portion has an enveloped worm gear with at... | 06/19/2001 |
| 6161409 | Process and device for manufacturing a gear part with outer teeth A process is disclosed for manufacturing a gear part with outer teeth from a metallic workpiece shaped as a circular blank or predrawing. The gear part has a hub surface with outward projecting teeth. The workpiece is flattened in its circumferential area... | 12/19/2000 |
| 6151778 | Apparatus and method for roll forming gears A wrought or powder metal gear preform is mounted for rotation about a first axis and then driven in meshing engagement with a roll forming die supported for rotation about a second axis transverse to the first axis. The roll forming die includes a helica... | 11/28/2000 |
| 6076387 | Process for rolling bevel gears on an axial stamping rolling machine and tooling for its implementation Teeth are ring rolled in a closed die formed between upper and lower clamping elements in a starting workpiece that is a pretreated blank whose shape outside a region to be deformed by upper and lower profiled tools already corresponds generally to a desi... | 06/20/2000 |
| 6016602 | Method of producing a sheet metal gear The present invention relates to a method of producing a sheet metal gear in which a metal sheet (2) is used as a starting material and a gear is formed in the outer peripheral edge of the metal sheet. The object of the production method is to finish easi... | 01/25/2000 |
