Parallel Shafts, Adjustable Gear Mesh Patents (Class 74/392)
  • Patent number: 8857286
    Abstract: A machine tool transmission system includes a driving assembly, a driven gear and at least one transmission gear, at least two positioning gears and at least two retaining gears. The driving assembly includes an input unit and a driving gear driven by the input unit. The transmission gear, positioning gears and retaining gears have respectively a plurality of transmission teeth, positioning teeth and retaining teeth that include respectively a front end tooth and a rear end tooth connecting to the front end tooth and formed at a thickness greater than that of the front end tooth.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: October 14, 2014
    Assignee: Luren Precision Co., Ltd.
    Inventors: Shi-Duang Chen, Tay-Cheng Kuo, Chin-Lung Huang
  • Patent number: 8739893
    Abstract: The invention relates to a multi-gear transmission device, particularly a two-gear transmission device, for transferring a drive torque from an input side to an output side, which transmission device has at least two selectable gear ratios. The multi-gear transmission device further has a multi-stage clutch device, particularly a two-stage clutch device, with at least two different, selectable limit torques. According to the invention, the multi-stage transmission device has at least two preferably switchable translating gear pairs, and the multi-stage clutch device is included in the translating gear pairs.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: June 3, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Willy Braun
  • Patent number: 8567277
    Abstract: A transmission device includes a gear case, a first gear, a second gear and a backlash adjusting mechanism. The first gear, the second gear and a backlash adjusting mechanism are received in the gear case. The first gear includes a shaft. The second gear is meshed with the first gear. Both of the first gear and the second gear are bevel gears. The backlash adjusting mechanism includes a resilient member and fastening member. The fastening member passes through the gear case. The resilient member resists the fastening member and an end of the shaft of the first gear, respectively. An elastic variation of the resilient member is changed or adjusted by the fastening member, such that a backlash between the first gear and the second gear is adjusted via the resilient member.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: October 29, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Bo Long
  • Patent number: 8561490
    Abstract: A farm vehicle power take-off device, in particular for a tractor, wherein an output shaft is connected selectively by a drive to a first and second input shaft rotating at different speeds. The selective connection is made by moving a selector sleeve between three settings, in a first and second of which, the output shaft is connected to the first shaft to rotate at a first and second angular speed respectively, and, in a third of which, the output shaft is connected to the second shaft to rotate at a third angular speed different from the first and second angular speed.
    Type: Grant
    Filed: April 13, 2008
    Date of Patent: October 22, 2013
    Assignee: CNH America LLC
    Inventors: Giancarlo Benassi, Ivan Tioli
  • Publication number: 20120017717
    Abstract: A gear transmission device includes a first input shaft, a first transmission gear, a first output shaft, and a first gear clearance adjustment mechanism. The first transmission gear sleeves on the first input shaft. The first gear clearance adjustment mechanism includes two adjustment gears. The two adjustment gears separately sleeve on the first output shaft and both mesh with the first transmission gear, such that the first input shaft is rotatably assembled with the first output shaft. Two sides of gear teeth of the first transmission gear resist gear teeth of the two adjustment gears respectively, such that the first transmission gear and the two adjustment gears are prevented from damage by interference. Therefore, a collision force and a noise between the first transmission gear and the two adjustment gears are decreased. The invention also provides a robot arm using the gear transmission device.
    Type: Application
    Filed: December 22, 2010
    Publication date: January 26, 2012
    Inventor: BO LONG
  • Patent number: 7971499
    Abstract: A method for synchronizing multiple generators includes positioning a pilot feature of a shaft of a first generator positioned at a first angular position that is substantially aligned with a first predetermined reference point located at a predetermined angular position relative to an axis, locking the shaft of the first generator at the first angular position, aligning a pilot feature of a first shaft of a second generator with a second angular position that is substantially aligned with a second predetermined reference point located at a position relative to the axis that is substantially equal to the predetermined angular position, calculating an angular difference between the two angular positions, and rotating a second shaft splined with the first shaft of the second generator about the axis in another direction, based on the calculated angular difference.
    Type: Grant
    Filed: November 12, 2007
    Date of Patent: July 5, 2011
    Assignee: Honeywell International Inc.
    Inventors: Christopher J. Herlihy, Ronald P. Maty, Edward M. Brady
  • Patent number: 7721616
    Abstract: Disclosed herein is an apparatus that relates to a gear set. The apparatus includes, a housing, a first gear movable in the housing such that a first axis defined by the first gear is repositionable relative to the housing, a second gear in mesh with the first gear, and a second axis defined by the second gear. The apparatus constrains movement of the first axis to a plane containing both the first axis and a line commonly perpendicular to the first axis and the second axis, and a biasing member that urges the first gear toward the second gear.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: May 25, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Michael J. Augustine, Christian E. Ross, Steven J. Collier-Hallman, Mohammad S. Islam
  • Patent number: 7665378
    Abstract: An electric power steering apparatus includes a transmission mechanism for transmitting an output from an electric motor for steering assist to a steering mechanism. The transmission mechanism includes a driving gear, an intermediate gear and a driven gear. An eccentric mechanism for eccentrically locating the intermediate gear is provided in order that a center axis of the intermediate gear is moved toward at least one of the axes of the driving gear and the driven gear while maintaining a parallel relation. The eccentric mechanism includes an intermediate-gear support shaft having a center axis. The intermediate-gear support shaft is supported by first and second circle holes in a manner to be rotatable about the center axis thereof for adjustment of a rotational position thereof, the first and second circle holes have their center axes aligned coaxially with each other.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: February 23, 2010
    Assignee: JTEKT Corporation
    Inventors: Kensaku Nakamura, Nicolas Plataret, Hiroki Yamahana
  • Patent number: 6612195
    Abstract: A face gear transmission system divides the input torque into multiple kinematic paths. The first kinematic scheme consists of a drive shaft and driven shaft having a plurality of pinions which contact a primary face gear. The second kinematic scheme consists of two independent symmetrical gear paths. One is a first pinion, a first idler and a first idler face gear and the primary face gear. The other independent gear path is a pinion on the second shaft, the idler, and second idler face gear and the primary face gear. The face gear transmission is especially applicable to rotorcraft having one or more input drive shafts to provide a proprotor transmission system which is relatively small in size and light in weight.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: September 2, 2003
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Yuriy Z. Gmirya, Jules G. Kish
  • Patent number: 6523429
    Abstract: A power take off drive train for an agricultural tractor includes at least one input shaft and an output shaft that are rotatably mounted in a transmission casing, wherein the gear train provides for the output shaft to be rotated at one of three selected speeds, one of the at least one input shafts mounting first and second input gear wheels and a selector, the gear wheels being free to rotate on the shaft, and wherein the selector is mounted on the shaft for rotation therewith, and to slide axially along the shaft to engage with one of the first and second gear wheels transmitting torque thereto, and wherein the output shaft mounts first and second output gear wheels fixed for rotation therewith, the first and second output gear wheels being in driving engagement with the first and second input gear wheels respectively, and wherein the drive train further comprises a third output gear wheel that engages with a third input gear mounted on an input shaft mounted in the transmission casing, wherein drive to th
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: February 25, 2003
    Assignees: AGCO SA, Renault Agriculture SA
    Inventors: Emmanuel Desmarchelier, Philippe Baudet, Fabrice Collin
  • Patent number: 6122985
    Abstract: A torque-dividing transmission, particularly for aircraft, having a single nput pinion and a single output gear, both rotating about respective fixed axes; at least two gear assemblies, both interposed between the pinion and the output gear, and each for transferring a respective portion of the torque from the pinion to the output gear; and a torque-dividing device for dividing the input torque equally between the two gear assemblies; the torque-dividing device having, for each gear assembly, a number of elongated elements elastically bendable in use.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: September 26, 2000
    Assignee: Elasis Sistema Ricerca Fiat Nel Mezzogiorno Societa Consortile per Azioni
    Inventor: Paolo Altamura
  • Patent number: 5813292
    Abstract: A method for fabricating a split path transmission system that achieves equal torque splitting between the forward and aft split load paths of each gear train thereof at a predefined operating point by providing an intentional timing difference between gears and pinions of the forward and aft split load paths of each gear train of the split path transmission system is disclosed. The method includes the steps of identifying the torque distribution curves of the forward and aft split load paths of one gear train of the split path transmission system. The method further includes a step of selecting a predefined operating point for the split path transmission system wherein equal torque splitting between the forward and aft split load paths of the one gear train is desired. Next, the forward and aft torque distribution curves are analytically modified as required to pass through the predefined operating point.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: September 29, 1998
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Jules G. Kish, Robert J. Durwin, Timothy L. Krantz
  • Patent number: 5251505
    Abstract: The speed reducer comprises a first shaft which is supported so as to be able to slide axially, is suitable for being rotatingly actuated and a pinion whose set of teeth are slightly beveled is located thereon. A second shaft is supported so as to be able to slide axially with an axis parallel to the first shaft and a gear and a further pinion, are located thereon both having sets of teeth slightly beveled in opposite directions and suitable for meshing respectively with the pinion of the first shaft and with a further gear which is fixedly located on an output shaft, coaxial to the first shaft. A device is provided for adjusting the axial position of the first shaft, so as to move the sides of the conical sets of teeth of the gears closer in order to eliminate the related clearances.
    Type: Grant
    Filed: December 12, 1991
    Date of Patent: October 12, 1993
    Inventor: Giovanni Castellani
  • Patent number: 5117703
    Abstract: A radially adjustable gearwheel for driving a cylinder of an offset press. The gear rim has three axially disposed tapered bores into which axially tapered bolts can be pressed to act radially on the gear rim. Additional axial bores are provided between the tapered bores to form expansion webs in the gear rim. The tapered bolts, in conjunction with the expansion webs, subject the gear rim to varying radial deformation in a gently rising parabolic curve depending on the tension applied to the tapered bolts so that the deformed gearwheel rolls with minimal impact and shock forces.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: June 2, 1992
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Josef Mathes, Roland Holl, Herbert Rebel
  • Patent number: 5067363
    Abstract: In order to improve a spindle drive for machine tools, comprising a housing, a spindle mounted in the housing, a drive motor arranged on the housing and a gear arranged in the housing and comprising an intermediate shaft driven by the drive motor and mounted in the housing via two shaft bearings spaced from one another as well as a first gear wheel seated on the intermediate shaft, wherein for driving the spindle as C-axis the first gear wheel engages in a first position with a second gear wheel driving the spindle so as to mesh with the second gear wheel without clearance, such that it is more simple in construction it is suggested that the first shaft bearing fix the intermediate shaft immovably on the housing in a direction transverse to its axis and that the intermediate shaft be adapted to be moved back and forth by the second shaft bearing relative to the second gear wheel in an adjusting direction between the first position and a second position, the gear wheels meshing with one another in the second p
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: November 26, 1991
    Assignee: Index-Werke GmbH & Co. KG Hahn & Tessky
    Inventor: Dietmar F. Hafla
  • Patent number: 4944195
    Abstract: A controlling transmission comprising a planetary gear mechanism in which at least one pair of intermediate gears are interposed to mesh with a sun gear and an internal gear and in which intermediate shafts respectively supporting the intermediate gears are fixed on a carrier. The indexing positions for fixing the intermediate shafts on the carrier are set such that a tooth surface contacting state, in which one of the intermediate gears meshes with the sun gear and the internal gear, and another tooth surface contacting state, in which the other of the intermediate gears meshes with the sun gear and the internal gear, are determined to have opposite power transmitting directions.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: July 31, 1990
    Assignee: Takashi Takahashi
    Inventors: Takashi Takahashi, Kinichi Endo
  • Patent number: 4916962
    Abstract: A reclining angle adjustment device for a seat includes a shaft having a concentric portion and an eccentric portion and rotatable for adjusting the reclining angle of the seat, the eccentric portion comprising an axially movable tapered ring, a gear train including an external gear and an internal gear meshing with the internal gear, the internal gear having more teeth than the external gear, a first arm having one of the external and internal gears which is rotatably fitted at its center over the concentric portion, and a second arm having the other of the external and internal gears which is rotatably fitted at its center over the tapered ring. A resilient member engages the tapered ring for normally pressing the tapered ring axially along the shaft in a direction to strengthen meshing engagement between the external and internal gears.
    Type: Grant
    Filed: May 2, 1989
    Date of Patent: April 17, 1990
    Assignee: Shiroki Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yasuhisa Tsutsumi, Kazuyuki Kurashige
  • Patent number: 4806069
    Abstract: The bending and turning movements of the wrist are brought about by drive motors via at least one gear train, in which a cylindrical gear pinion drives a cylindrical gear wheel via an intermediate wheel. For adjusting the backlash, the intermediate wheel is journalled on a movable support which makes contact with a cylindrical guide surface in the wrist housing and can be displaced, by means of two adjusting screws, along a circular path, the center of which coincides with the axis of rotation of the gear pinion. The intermediate wheel is journalled on an eccentric bearing pin on the movable support.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: February 21, 1989
    Assignee: ASEA Aktiebolag
    Inventor: Leif Tellden
  • Patent number: 4802450
    Abstract: A balancing arrangement is provided for balancing the secondary out of balance forces of four cylinder in line engines. A gearwheel carried on the crankshaft transmits drive to a further gearwheel and each of the gearwheels is arranged to drive a balancing wheel. The balancing wheels are driven in opposite directions at twice the rotational speed of the engine. Each wheel is provided with adjustment means whereby backlash in the wheels is taken up. The arrangement is of particular application to motorcycles.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: February 7, 1989
    Assignee: Triumph Motorcycles (Coventry) Limited
    Inventor: John M. L. Roberts
  • Patent number: 4793200
    Abstract: A reverse idler gear shaft noise dampening arrangement for an automotive manual transmission. The reverse gear idler shaft has its free end resiliently centered in axially spaced aligned transmission housing bores by a pair of elastomeric O-rings. The bore centering O-rings position the idler shaft principal axis a predetermined distance closer to the principal axes of both the transmission output shaft and counter shaft with the transmission in its forward drive modes biasing the reverse idler gear teeth into positive contact with both the output shaft and countershaft reverse gear teeth thereby obviating backlash gear rattle.
    Type: Grant
    Filed: November 19, 1987
    Date of Patent: December 27, 1988
    Assignee: Chrysler Motors Corporation
    Inventor: Robert L. McDonald
  • Patent number: 4759229
    Abstract: Herein disclosed is a controlling transmission to be used with an industrial robot or the like, which is constructed of a planetary or star gear mechanism having at least one pair of intermediate gears arranged between a sun gear and an internal gear. The paired intermediate gears are set by the movement adjustment of a movement adjusting mechanism such that one of them has its back-lash eliminated with respect to the rotations in the clockwise direction whereas the other has its back-lash eliminated with respect to the rotations in the counter-clockwise direction.
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: July 26, 1988
    Assignee: Takashi Takahashi
    Inventors: Takashi Takahashi, Kinichi Endo
  • Patent number: 4642021
    Abstract: A manipulation arm mechanism for an industrial robot is provided with a pivotable arm in which a first shaft driven by a drive motor is carried for rotation about an axis extending in a longitudinal direction of the arm. The first shaft has secured to its front end a rear casing, on which a front casing is carried for rotation about an oblique axis slanted relative to the first shaft axis. A head mounting shaft capable of attaching thereto a working head such as, for example, a handling gripper is carried in the front casing to be rotable about an axis which extends in axial alignment with the first shaft axis only when the front casing is at a predetermined angular position about the oblique axis. Second and third shafts driven by respective drive motors pass through the first shaft and present into the rear casing their front ends, to which the front casing and the head mounting shaft are drivingly connected through gear trains respectively.
    Type: Grant
    Filed: June 5, 1984
    Date of Patent: February 10, 1987
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventor: Makoto Kikuchi
  • Patent number: 4605298
    Abstract: Drive mechanism for an electrographic transfer roller apparatus wherein potential degradation of a transferred image is substantially prevented by eliminating relative movement between a receiver member supported by such apparatus and a transferable image carrying dielectric member in contact in a transfer zone. In the drive mechanism, a dielectric member is supported and moved through a transfer zone. A selective drive for the transfer roller is coupled to the transfer roller when a receiver member, supported by the transfer roller, is out of the transfer zone and decoupled from the transfer roller when the attached receiver member is in contact with the dielectric member in the transfer zone. Therefore, when the receiver member and the moving dielectric member are in contact in the transfer zone, drive is imparted only through such contact and the receiver member and dielectric member move at the same peripheral surface speed.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: August 12, 1986
    Assignee: Eastman Kodak Company
    Inventors: Matthew J. Russel, Rose M. Borruso
  • Patent number: 4458546
    Abstract: A load-splitting transmission has its drive shaft journaled with respect to the housing in an axial bearing and supported only by a radial bearing forming part of the clutch connecting said drive shaft to the output shaft of an engine so that the axis of the drive shaft is swingable relative to the housing. The drive shaft carries a drive gear which meshes with a pair of load-splitting gears so that the swinging movement allows torque compensation between the two drive trains of which the load-splitting gears are a part.
    Type: Grant
    Filed: December 16, 1981
    Date of Patent: July 10, 1984
    Assignee: Zahnradfabrik Friedrichshafen, AG
    Inventors: Friedrich Schreiner, Uwe Staberoh
  • Patent number: 4372176
    Abstract: A method and apparatus for eliminating axial thrust and consequently the need for thrust bearings in parallel shaft and crossed-axis helical drive arrangements is disclosed. According to this invention, a gear with helically cut teeth which maintain a constant profile but have a uniformally tapered top land and bottom land, the top land of which increases in width as the bottom land decreases in width is mounted on a shaft. This tapered tooth helical gear is meshed with a second similar gear mounted in meshing proximity on a second shaft. During operation the axial forces associated with helical gears are resisted by the compressive interfacing, with zero backlash, of the tapered teeth. Thus, the need for thrust bearings is eliminated.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: February 8, 1983
    Inventor: Clegia L. Terry
  • Patent number: 4196046
    Abstract: Apparatus is described for adjusting backlash clearances between the flutes of two meshing corrugating rolls, while the rolls are rotating, permitting minimization of noise levels. The corrugating rolls are driven through a pair of meshing helical gears, one of which is free to move axially on its drive shaft. A mechanism moves the helical gear axially, resulting in a slight rotation of the corrugating roll drive shaft, relative to the other corrugating roll. The preferred mechanism is mounted about the drive shaft of the movable helical gear. A hand wheel adjuster is threaded onto a sleeve fixed to a frame or other support and contacts the rotating helical gear through a bearing mounted on a second sleeve fixed to the gear. Rotation of the hand wheel adjuster causes the adjusting axial movement of the helical gear system.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: April 1, 1980
    Assignee: Weyerhaeuser Company
    Inventor: Ronald J. McConnel