Splayed Or Having A Cam Surface For Anti-backlash Patents (Class 403/359.2)
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Patent number: 10788097Abstract: A friction damper includes a cylindrical core member and a cylindrical elastic body. The core member is disposed between an outer circumferential surface of an inner shaft and an inner circumferential surface of an outer shaft, and is fixed to one of the inner and outer shafts. The elastic body is in compressive contact with the other of the inner and outer shafts, and has an axial length larger than that of the core member. The elastic body includes a portion extending in an axial direction away from the core member and has a thick-walled section which extends in a radial direction away from the core member. The thick-walled section has a larger wall thickness than a section of the elastic body which overlaps the core member in an axial direction of the core member, and is held in pressing contact with the other of the inner and outer shafts.Type: GrantFiled: February 14, 2018Date of Patent: September 29, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroshi Takekawa
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Patent number: 10017041Abstract: A power transmission structure of a vehicle, which is provided with a first rotor, a second rotor, and a metallic cylinder. In this power transmission structure, the reduction shaft and the second rotor shaft receive reaction force from the cylindrical metallic member in radially opposite directions. The cylindrical metallic member is deformable elastically in a radial direction and press-fitted in a part where the reduction shaft and the second rotor shaft of a second electric motor overlap each other in the radial direction adjacent to a spline fitting part of the reduction shaft and the second rotor shaft. Therefore, misalignment between the axis of the reduction shaft and the axis of the second rotor shaft is restrained, and generation of tooth hitting sound is thus restrained. Since the cylindrical metallic member has high rigidity and is restrained from being deformed in a rotation direction, responsiveness of torque transmission is improved.Type: GrantFiled: April 25, 2016Date of Patent: July 10, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akitaka Ichikawa, Yoshimitsu Yokouchi, Masataka Sugiyama, Haruo Isomura, Hiroki Kuwamoto
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Patent number: 8986144Abstract: A power transmission device is used to distribute torque from a power source to an external device and an auxiliary device. The power transmission device is comprised of a first bearing and a second bearing both secured to a stationary member, a first sprocket rotatably supported by the first bearing, a second sprocket capable of being drivingly coupled with the auxiliary device, a chain coupling the first sprocket with the second sprocket, a rotary shaft rotatably supported by the second bearing, which is drivingly coupled with the power source and drivingly engageable with the external device to transmit a first part of the torque to the external device, and a joint drivingly linking the rotary shaft with the first sprocket to transmit a second part of the torque to the first sprocket.Type: GrantFiled: May 19, 2011Date of Patent: March 24, 2015Assignee: Nissan Motor Co., Ltd.Inventors: Norihiro Takemoto, Yasuo Takagi, Terumasa Hidaka
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Patent number: 8465373Abstract: The present invention contemplates a face coupling, and contemplates a gas turbine engine having a face coupling. The face coupling includes a plurality of driving teeth extending from a first component, and a plurality of driven teeth extending from a second component. The plurality of driving teeth and the plurality of driven teeth cooperate to transmit a torque load from the first component to second component. The plurality of driven teeth include a root transition for preventing a driving tooth tip edge from contacting an adjacent driven tooth.Type: GrantFiled: September 23, 2010Date of Patent: June 18, 2013Assignee: Rolls-Royce CorporationInventors: Michael S. Dornfeld, Douglas Michael Roever, Mark Potter, Gregory Blake
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Patent number: 8240601Abstract: A coaxial rotary coupling (11) includes a hollow inner tube (4) and a hollow outer tube (7), with inner and outer splines (12 and 13) in mutual engagement. The coupling (11) further includes: approach elements for longitudinally approaching the inner and outer tubes (4, 7) together with elements presenting a wedge arrangement for causing the inner and outer tubes (4, 7) to turn (23) relative to each other in opposite directions so as to limit tangential assembly slack; a soleplate (16) of the driven tube (7); and a flange (17); the driving tubes (4) having complementary splines (12, 13, 18) together with dogs including force-transformation ramps (31) that are distributed peripherally within the coupling (11).Type: GrantFiled: January 27, 2010Date of Patent: August 14, 2012Assignee: EurocopterInventors: Etienne Rampal, Elio Zoppitelli
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Patent number: 7766575Abstract: An internally splined component for transmitting torque wherein the splines are cold formed to predetermined tolerances.Type: GrantFiled: October 11, 2003Date of Patent: August 3, 2010Assignee: Metal Forming & Coining CorporationInventors: David P. Huber, Ben R. Vasa, Timothy J. Cripsey
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Patent number: 7610649Abstract: A wiper device includes a link member to which a driving force from a wiper motor is transmitted; a pivot shaft which has serrated portions formed at both ends thereof being secured to the link member at one end thereof; a lever portion which is secured to the other end of the pivot shaft; a wiper arm which is connected to an end of the lever portion divided from an axis of the pivot shaft; a link securing hole portion which is formed in the link member to which the one serrated portion being secured; and a lever securing hole portion which is formed in the lever portion to which the other serrated portion being secured.Type: GrantFiled: September 28, 2005Date of Patent: November 3, 2009Assignees: Honda Motor Co., Ltd., Mitsuba CorporationInventors: Tomohiro Ohe, Mamoru Kagawa, Sadaki Takada
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Patent number: 7478969Abstract: A rotatable combination that includes first and second members respectively having first and second longitudinally extending pluralities of splines. The second plurality of splines extend substantially parallel to the rotational axis. The first plurality of splines includes first and second longitudinally extending sections having different orientations with the second longitudinal section defining an angle with the rotational axis. The first longitudinal section engages the second plurality of splines before the second longitudinal section during assembly of the two members. Engagement of the second longitudinal section with the second plurality of splines generates a greater resistance to longitudinal movement than engagement of the first longitudinal section with the second plurality of splines.Type: GrantFiled: January 27, 2006Date of Patent: January 20, 2009Assignee: Delphi Technologies, IncInventors: Keith A. Kozlowski, Leland N. Olgren
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Patent number: 7387462Abstract: A series of shafts configured to attach in a bore of a receiving part and a method for manufacturing the shafts, the series including at least two different sizes, each size including different variants of shafts; wherein each shaft includes at least five contiguous axial regions, wherein each variant includes different gear teeth in the axial region of the first end of the shaft. The bore in the receiving part includes at least three axially adjacent regions, the axial regions being arranged to provide a force-locked connection between the shaft and the receiving part when the shaft is pressed into the receiving part and such that the toothed or milled region of the shaft cuts into the bore in a form-locked manner as a result of the shaft being pressed in.Type: GrantFiled: April 10, 2003Date of Patent: June 17, 2008Assignee: Sew-Eurodrive GmbH & Co. KGInventor: Uwe Häcker
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Patent number: 7007783Abstract: A disk carrier assembly for a multi-disk clutch includes a drive plate having a plurality of radially extending load teeth and a plurality of radially extending bearing teeth alternately disposed about the circumference of the drive plate. A disk carrier is included that has an axially cylinder segment with a plurality of axial protrusions that extend radially inward and are alternately disposed about the segment with plurality of axial grooves that extend radially outward. The axial grooves are adapted to radially retain a plurality of clutch disks while allowing operative axial movement. The plurality of axial protrusions further include a plurality of axial load protrusions alternately disposed between a plurality of axial bearing protrusions, each of the axial load protrusion have a load tooth cutout formed on its axial end and each of the axial bearing protrusion have an elongated area with an annular retaining groove.Type: GrantFiled: November 18, 2003Date of Patent: March 7, 2006Assignee: BorgWarner Inc.Inventors: Rainer Gerathewohl, Volker Becker, Ingo Steinberg, Andreas Schmidt
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Patent number: 6938747Abstract: A transmission includes a clutch basket and a driving disc each having teeth and tooth spaces which correspond to one another. A plug-in intermeshing connection between the driving disc and the clutch basket is provided such that there is no torsional backlash and such that no rattling noises are produced. To this end, at least one of the teeth of the driving disc and/or at least one of the teeth of the clutch basked has a slot. The tooth thickness of at least one of the teeth of the driving disc is greater than at least one of the tooth space widths of the clutch basket. In order to avoid rattling noises, it is also suggested that at least one pair formed of a tooth and a corresponding opposite tooth space may be configured such that the tooth is displaced with respect to the corresponding tooth space.Type: GrantFiled: October 14, 2003Date of Patent: September 6, 2005Assignee: Volkswagen AGInventors: Wolfgang Schreiber, Ingo Steinberg
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Patent number: 6869151Abstract: A knuckle-supported wheelend assembly includes a shaft having a contoured peripheral surface portion proximate to an outboard end featuring a minimum radius and a maximum radius, and a hub mounted on the shaft's contoured surface portion via a complementary, contoured central bore. The nontapered contoured hub-shaft interface includes a slight twist or jog to reduce backlash and to permit a relative shortening of the length of axial hub-shaft engagement to as little as about 45% of the maximum radius, thereby advantageously reducing scrub radius for a given wheel-tire combination. By eliminating any required taper of the contoured interface, the hub's inboard face firmly abuts the machined face of the inner race of a knuckle-mounted, shaft-supporting bearing assembly to achieve reduced assembly runout. The hub's wheel-mounting face and integral annular friction surfaces are each machined with reference to the inboard hub face to ensure a high degree of parallelism.Type: GrantFiled: May 7, 2003Date of Patent: March 22, 2005Assignee: Visteon Global Technologies, Inc.Inventors: Douglas C. Myers, Hui Hugh Wang, Karl-Heinz Simons
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Patent number: 6702508Abstract: The invention relates to a mechanical connection for transmitting torque, demonstrating a common longitudinal axis a shaft rotating around the longitudinal axis and a hub coaxial to the shaft, its inside contour surrounding the shaft via a slaving section, wherein in the area of the slaving section, the shaft and the inside contour of the hub comprise of at least one retaining section with out-of-round cross section for transmitting torque. In the region of the slaving section, at least one of the shaft or the hub demonstrates at least two retaining sections angularly displaced to each other around the longitudinal axis.Type: GrantFiled: January 22, 2002Date of Patent: March 9, 2004Assignee: Visteon Global Technologies Inc.Inventors: Karl-Heinz Simons, Thomas Svensson
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Patent number: 6604885Abstract: An assembly including a driving connection for torque transmission in a drive train of an engine by means of a shaft-hub connection. The shaft-hub connection is provided with lengthwise teeth for releasable connection of a crankshaft with a coaxial hydrodynamic torque converter. The lengthwise teeth of the shaft-hub connection have tooth cross sections that increase or decrease in the lengthwise direction of the teeth.Type: GrantFiled: May 11, 2000Date of Patent: August 12, 2003Assignee: Bayerische Motoren Werke AktiengesellschaftInventor: Josef Neuner
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Patent number: 6547479Abstract: A tapered spline 16 which allows members 12, 14 to be selectively coupled and which further allows energy to be selectively communicated by and between these members 12, 14.Type: GrantFiled: February 14, 2001Date of Patent: April 15, 2003Assignee: Ford Global Technologies, Inc.Inventors: William Edmunds Dowling, Jr., David Joe Sell, Perry Edward Phelan, Kin Sang Yeung
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Patent number: 6514003Abstract: A shaft coupling structure includes: a span-ring (20) acting as a friction coupling of main power transmitting means between a drive shaft (7) as a shaft-side member and a brake center (18) as a boss-side member; and mechanical engaging means (30) as auxiliary power transmitting means provided adjacent to the span-ring (20) so as to engage the drive shaft (7) with the brake center (18) when the transmission of the rotary power by the span-ring (20) is insufficient. Accordingly, since the torque transmission is conducted by the mechanical engaging means (30) even when slippage is occurred in the span-ring (20), an optimal transmission torque can be ensured, thereby obtaining sufficient reliability of transmission torque.Type: GrantFiled: March 21, 2001Date of Patent: February 4, 2003Assignee: Komatsu Artec Ltd.Inventor: Seiichi Horikawa
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Patent number: 6408706Abstract: A clearance-adjusting mechanism is provided so that a clearance in a circumferential direction between an inner wall surface of a boss section and an outer wall surface of a spline shaft section is adjusted in such a way that a first spline shaft member and a second spline shaft member, which are divided into two, are rotated and displaced in mutually opposite directions about a center of rotation of an axis.Type: GrantFiled: June 2, 2000Date of Patent: June 25, 2002Assignee: SMC Kabushiki KaishaInventors: Shigekazu Nagai, Yousuke Shirai
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Patent number: 6267528Abstract: A coupling structure of a variable length shaft, comprises a pipe member having an end formed with a plurality of slits elongated in the axial direction to be capable of expanding and diminishing in diameter, an intermediate shaft spline-fitted in the end of the pipe member, and a ring member fitted on an outer periphery of the end of the pipe member, the intermediate shaft being fastened by the end of the pipe member. A holder is releasably attached to an end of the ring member to expand a diameter thereof and thereby reduce a slide frictional resistance of the pipe member against the intermediate shaft. When the holder is released, the ring member diminishes in diameter, and a fastening force of the pipe member on the intermediate shaft is increased.Type: GrantFiled: July 1, 1999Date of Patent: July 31, 2001Assignee: NSK Ltd.Inventor: Kiyoharu Higashino