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| Number | Title | Issue Date |
| 8171636 | Method of manufacturing a stator of a cage for a continuously variable transmission (CVT) A continuously variable transmission has a number of tiltable ball-leg assemblies configured angularly about a longitudinal axis. Each ball-leg assembly is in contact with, and guided through a tilting motion by an axially translating shift cam having a convex shape... | 05/08/2012 |
| 8171637 | Superfinishing large planetary gear systems Disclosed herein is a new improved large planetary gear system used on the input stage of wind turbine power generators. This improved planetary gear system reduces or eliminates lubricant debris traditionally generated from the gear teeth, thereby eliminating an in... | 05/08/2012 |
| 8091236 | Manufacturing method for toothed power transmission member having oil reservoir and toothed power transmission member manufactured by this manufacturing method A method of manufacturing a toothed power transmission member having an oil reservoir according to the present invention includes steps of forming primitive concave portion, which form a basis for the oil reservoir, on a surface of a toothed power transmission membe... | 01/10/2012 |
| 8069566 | Operating method for improving the running behavior of gearwheels and burnishing device for performing the method An operating method improves the running behavior of gearwheels negatively noticed upon gearwheel testing and is performed by a burnishing device. The gearwheels that were rejected from the production process may be optimized rapidly and in a targeted way so that th... | 12/06/2011 |
| 8006385 | Forming method of tooth trace of gear A forming method of a tooth trace of a gear according to the present invention includes: a first step of preparing a preformed gear made of metal including a cylindrical main body and a tooth part having a flat tooth flank having a uniform thickness in a tooth trace... | 08/30/2011 |
| 7827692 | Variable case depth powder metal gear and method thereof A gear and a method of making a forged powder metal gear having a plurality of teeth and a variable case depth profile forged in the plurality of teeth. Each tooth of the plurality of teeth has a first surface and a tooth root. A variable case depth profile is forme... | 11/09/2010 |
| 7426777 | Method of producing member having face-geared surface A method of producing a member with a face-geared surface. An example of the method includes an initial process preparing a work piece and a hob, and a geared surface forming process forming a geared surface on a part of the area. In addition, at least one of the ho... | 09/23/2008 |
| 7400141 | Magnetic type angle sensor A magnetic type angle sensor includes a rotary body having a first sensed part provided on a circumferential surface thereof with projecting parts and recessed parts at equal intervals in a circumferential direction thereof and a second sensed part provided on a cir... | 07/15/2008 |
| 7318566 | Aircraft with a lift system An aircraft incorporates a lift system for guiding a lift cabin. The lift cabin 21 is capable of servicing several decks in the aircraft. A guiding structure is mounted inside the aircraft fuselage 1 by mounting it to the floor and deck structures, whi... | 01/15/2008 |
| 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 |
| 7225541 | Method for producing hollow rack bar A method for forging a rack bar from a blank pipe. Prior to the rack forging process, a blank pipe is subjected to a process for obtaining an adjustment of a cross-sectional shape of the blank pipe. Such a preliminary adjustment is constructed by a swaging process f... | 06/05/2007 |
| 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 |
| 7207231 | Rack gear and method of making same A rack (20) for a rack and pinion steering system (10) includes a fully dense powder metal rack tooth section (50) joined, by sintering, to a hollow rack tube (30). The rack tooth section (50) is formed by pressing powder metal ( | 04/24/2007 |
| 7191521 | Advanced geometry of skew and straight bevel gears produced by forging The present invention provides for bevel gears having a localized and stable bearing contact. The localization of bearing contact is achieved by substitution of flat tooth surfaces with parabolic tooth surfaces. This is accomplished by either modifying line-contact ... | 03/20/2007 |
| 7155824 | Method of manufacturing an automotive differential having an input pinion A method for fabricating an input pinion for an automotive differential that includes: providing a shaft; forging a pinion with a plurality of teeth such that each tooth is formed to at least a near-net size, forming a hole in the pinion, pressing an end of the shaf... | 01/02/2007 |
| 7117598 | Net-shaped gear and manufacturing method for forming net-shaped gear employing insert and preform A differential assembly for a motor vehicle includes a plurality of pinion gears in meshing engagement with a plurality of side gears. At least one of the pinion gears and side gears is formed from a tubular insert and a tubular preform forged together in a forging ... | 10/10/2006 |
| 7111395 | Method for densifying teeth of a gear wheel A method and an apparatus are described for producing a gear wheel from a powder metal blank (1) which is sintered and pressed with an overmeasure in the flank and root region of the teeth and which in the region of the overmeasure is densified under plastic ... | 09/26/2006 |
| 7093513 | Differential side gear and the production method thereof A one piece extruded differential side gear comprising internal splines which are used to connect to a drive shaft. The differential side gear includes outer circular gear teeth and defines a rectilinear blind hole in which an end portion of the drive shaft is recei... | 08/22/2006 |
| 7076875 | Method of manufacturing compound helical planet gears having different leads A method is provided for manufacturing a compound helically toothed planet gear for a planetary gear set wherein the individual gear elements of the compound planet gear have different leads. The method identifies and utilizes the several factors affecting gear timi... | 07/18/2006 |
| 7076854 | Method for the production of a shaft-hub connection A toothed or splined shaft having an external toothing is pushed with clearance into an internal toothing of a hub, tooth to space, and the external toothing of the shaft is pressed together with the internal toothing of the hub. In the push-in position of the shaft... | 07/18/2006 |
| 7073249 | Method for providing a worm on an armature shaft of an electric motor, and armature produced by the method The invention relates to a method for mounting a worm on an armature shaft of an armature for an electric motor. The invention proposes first mounting armature parts, such as an armature lamination packet with armature windings, a commutator, a bearing seat, and/or ... | 07/11/2006 |
| 7069764 | Method for manufacturing a hollow rack shaft A hollow rack shaft is manufactured through a first step, a second step and a third step. At the first step, the plate-like workpiece of substantial rectangular shape is press formed into a gutter-like shape. The first die set used at this step is provided with slan... | 07/04/2006 |
| 7031892 | Numerical-simulation method for rotary metal forming, recording medium and program Elongation in the circumferential direction of a rotary formed body is produced only within a model zone, and the approximate toric plate shape is maintained as the overall shape of the body, and the rotation axis of the body is positioned on a straight line connect... | 04/18/2006 |
| 7024725 | Overhead door closer with slide arm assembly This invention relates to an overhead door closer with slide arm assembly having a toothed pinion that is eccentrically supported and presents a circular rolling curve, which pinion meshes with a toothed rack arranged at a piston. The invention concentrates on a par... | 04/11/2006 |
| 6981324 | Method of manufacturing net-shaped gears for a differential assembly A differential assembly for a motor vehicle includes a plurality of pinion gears in meshing engagement with a plurality of side gears. At least one of the pinion gears and side gears is formed from a heated tubular preform in a forging die. A method for manufacturin... | 01/03/2006 |
| 6974012 | Sliding collar produced by powder metallurgy A sliding collar has claw internal toothing and teeth projecting from at least one of the end surfaces. The individual teeth have lateral surfaces configured as lateral surfaces of a cone segment or as lateral surfaces of a cone segment and one or more truncated-con... | 12/13/2005 |
| 6948245 | Gear and method of making the same In order that a worm 1 is rotated, a clearance (a region constituting a clearance portion between bearings and a worm gear) is formed (FIGS. 4(1) to (3)) in an upper surface of a base plate 3. A mold 12 for forming a lower h... | 09/27/2005 |
| 6918181 | Gear tooth topological modification for reducing noise and vibration in transmission systems A method for improving acoustic and vibrational properties of gears includes determining the transmission errors of intermeshing gears due to stiffness variations in the gear teeth, performing Gear Tooth Topological (GTT) modifications to compensate for the errors, ... | 07/19/2005 |
| 6912786 | Herringbone gear teeth and method for manufacturing same A method of manufacturing herringbone gears starting with non-hardened cylindrical stock material, establishing a relief notch for each tooth in the cylindrical stock where the two helices meet, roughing the double helical teeth, and case-hardening the gear teeth. T... | 07/05/2005 |
| 6902508 | Helicopter mainshaft assembly and drive assembly including the same A helicopter mainshaft for use with a plurality of planet gear assemblies includes an elongated shaft having first and second opposed ends and a midsection located between the first and second ends. The shaft defines a shaft axis extending through the first and seco... | 06/07/2005 |
| 6898853 | Method for manufacturing a hollow rack shaft A hollow rack shaft is manufactured through a first step, a second step and a third step. At the first step, the plate-like workpiece of substantial rectangular shape is press-formed into a gutter-like shape. At the second step, a row of rack teeth is press-formed b... | 05/31/2005 |
| 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 |
| 6845560 | Method for manufacturing a hollow rack shaft Methods are provided for forming a hollow rack shaft from a workpiece comprising a rectangular plate. The workpiece is first bent into a gutter-like shape using a first die set. Rack teeth are then press-formed in a portion of the gutter-like shape using a second di... | 01/25/2005 |
| 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 |
| 6779271 | Method for manufacturing a hollow rack shaft A hollow rack shaft is manufactured through a first step, a second step and a third step. At the first step, the plate-like workpiece of substantial rectangular shape is press formed into a gutter-like shape. The first die set used at this step is provided with slan... | 08/24/2004 |
| 6711817 | Hypoid ring gear for differentials and method of producing the same The invention is intended to reduce the installation cost and running cost, minimize the production cost and increase the tooth surface strength of hypoid teeth. To this end, a hypoid ring gear for differential is produced by the steps of upset-forging a roun... | 03/30/2004 |
| 6647827 | Lightweight wave gear drive A wave gear drive has a wave generator with a hub and rigid cam plate formed of titanium alloy. Heat-dissipating fins are provided on both sides of these parts, and heat-dissipation is further increased by plating the surfaces with a material having a hig... | 11/18/2003 |
| 6638390 | Gear production process A process for manufacturing polymer/metal disks in a single piece batch size comprises applying a bonding agent to a metallic hub, pressing a polymeric ring over the metallic hub to form a ring/hub assembly, and heating the ring/hub assembly to cause bond... | 10/28/2003 |
| 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 |
| 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 |
