Friction-type Gearing Patents (Class 74/721)
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Patent number: 9096283Abstract: A magnetic robot includes a chassis and at least one track assembly associated with the chassis. The track assembly has a linear series of non-circulating magnet modules displaceably mounted with respect to the chassis. A driven track circulates about the magnet modules and travels on guide portions of the magnet modules.Type: GrantFiled: November 26, 2012Date of Patent: August 4, 2015Assignee: Foster-Miller, Inc.Inventors: Scott R. Albin, Anthony Chesna, Geoffrey Blake Lansberry, David J Shane
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Publication number: 20100063700Abstract: Disclosed is a 4 wheel drive apparatus for vehicles capable of driving two wheel or four wheels having a simple structure without conventional transfer case. The 4 wheel drive apparatus for vehicles includes a driving shaft connected to an engine, receiving a power from the engine, and having plural driving gears connected to thereon; a transmission including plural change gears geared with the plural driving gears, and an output shaft connected to front wheels and rear wheels of the vehicle; a front power transfer part including a front clutch installed on one end of the output shaft and transferring/blocking a power of the output shaft to the front wheels; a rear power transfer part including a rear clutch installed on the other end of the output shaft and transferring/blocking a power of the output shaft to the rear wheels; and a control part controlling the front and rear power transfer parts in order to restrict a power transferred from the output shaft to the front wheels 20 and the rear wheels.Type: ApplicationFiled: December 14, 2001Publication date: March 11, 2010Inventor: Tae-Hwan Ha
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Patent number: 7631578Abstract: In the case of a gear stage (1) of an actuating drive, in particular for a vehicle seat, having a bearing (12) which defines an axis (A12) and having an oscillatory body (11) which is mounted in a rotatable manner by the bearing (12), defines a further axis (A11) and, upon rotation of a driving mechanism (21), executes a rolling movement on the bearing (12), the axis (A11) of the oscillatory body (11) is inclined obliquely at an angle (?) relative to the axis (A12) of the bearing (12).Type: GrantFiled: June 20, 2008Date of Patent: December 15, 2009Assignee: Keiper GmbH & Co. KGInventors: Rolf Schüler, Karsten Kalmus
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Publication number: 20080276756Abstract: A traction-drive type driving-force transmission mechanism includes a sun roller having a first central axis about which the sun roller is rotatable. Shafts are provided and each has a second central axis aligned parallel to the first central axis. Planetary rollers are arranged rotatably along an outer peripheral surface of the sun roller and are supported respectively by the shafts. A guide member guides each shaft displaceably in a radial direction of the sun roller while maintaining the parallel relationship between the first and second central axes. A pressing member presses each planetary roller against the outer peripheral surface of the sun roller so that a driving force can be transmitted by a traction force between the sun roller and each of the planetary rollers.Type: ApplicationFiled: April 30, 2008Publication date: November 13, 2008Applicant: Kyocera Mita CorporationInventor: Takeshi Marumoto
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Patent number: 6845690Abstract: A transmission system for a motor vehicle, which contains a vehicle transmission equipped for longitudinal installation with a gear output shaft that points in the direction of the rear of the motor vehicle in the installed state is provided, wherein the shaft can be connected and be supported for rotation on an input shaft of a front axle gear unit via a driven shaft of a lateral drive unit and via a cardan shaft. For the purpose of reducing at least one deflection angle of the cardan shaft, at least one shaft corresponding to the cardan shaft is swiveled towards the gear output shaft of the vehicle transmission system.Type: GrantFiled: July 8, 2002Date of Patent: January 25, 2005Assignee: DaimlerChrysler AGInventors: Philip Gansloser, Juergen Greiner, Helmut Sandner
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Publication number: 20020038579Abstract: One of two input disks 62 is fixed to an input shaft 13, the other input disk 62 and an output disk 63 are supported so as to be movable in the axial direction thereof, and the other input disk 62 is energized toward one input disk 62 by a cylinder 71, and power rollers 66 respectively stored in a pair of cavities are contacted with the input and output disks 62 and 63. The input shaft 13 is allowed to shift in the axial direction thereof, whereas the output shaft 14 is prevented from shifting in the axial direction thereof. And, a drive gear 25 formed in the output disk 63 and a driven gear 23 formed in the output shaft 14 are respectively composed of double helical gears.Type: ApplicationFiled: October 1, 2001Publication date: April 4, 2002Applicant: Honda Giken Kogyo Kabushiki KaishaInventor: Kazuo Ooyama
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Patent number: 5724866Abstract: The present invention relates to a method and an apparatus for controlling a car equipped with an automatic transmission having a lockup clutch. According to the control method of the present invention, when the lockup clutch is in the lockup state, a variation of a generated torque is detected. When the range of the torque variation detected exceeds a predetermined value, an engine torque is reduced by controlling the engine, and the automatic transmission is controlled to compensate for a reduction of the driving torque due to a reduction of the engine torque. Thus, the speed change ratio is changed to the low gear side.Type: GrantFiled: August 21, 1996Date of Patent: March 10, 1998Assignee: Hitachi, Ltd.Inventors: Toshimichi Minowa, Yutaka Nishimura, Ken'ichi Kawashima, Hiroshi Kuroiwa, Masahiko Ibamoto
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Patent number: 5496226Abstract: A variable speed friction drive apparatus for a lawn mower includes a pair of drive cones supported by a frame for rotational movement about a common first axis, and a pair of drums supported by carriages for rotation about axes transverse to the lengths of the carriages. Each carriage is supported on the frame for movement between a neutral position in which the associated drum is disengaged from either of the cones and a plurality of driving positions in which the drum engages either of the cones. A universal joint connects the rear end of each carriage to the frame for universal pivotal movement about the joint, and both ends of each carriage are independently biased toward the neutral position.Type: GrantFiled: May 17, 1994Date of Patent: March 5, 1996Assignee: Dixon Industries, Inc.Inventors: Clair D. Splittstoesser, Donald P. Crosby, David G. Park, Larry S. Funk
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Patent number: 5435210Abstract: A differential drive mechanism comprises a cage, which is rotatable about a first axis and represents the input, two coaxial output shafts which are rotatable with respect to the cage about the first axis, a coupling which is connected eccentrically to the two output shafts to transmit relative contra-rotational movement between them by connections which permit relative rotation of the coupling and the output shafts about a second axis parallel to the first axis and a restraint member which is coupled to the cage and to the coupling such that the coupling is rotatable with respect to the cage about a third axis perpendicular to the axis and capable of reciprocation in a direction perpendicular to the first axis but prevented from movement in a direction parallel to the first axis. The eccentric connections are constituted by a respective eccentric hole in the inner end of each output shaft in which the associated end of the coupling is received.Type: GrantFiled: September 13, 1993Date of Patent: July 25, 1995Assignees: Ricardo Consulting Engineers Limited, Axial Wave Drive BV Bridge WorksInventors: John W. Moore, John C. Carden
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Patent number: 5214973Abstract: Traction drive transmissions which may be utilized as speed increasers or speed reducers for various power and rotary motor applications including for use in transmissions for helicopter main rotor and tail rotor drives wherein power from the primary input source is transmitted to output shafts or driven elements which may be disposed at a variety of angular relationships with respect to the input source through multiple rollers which are shaped and in frictionally driven contact with one another so as to effectively divide the input load into multiple power paths to the output shafts or driven elements and wherein the rollers are oriented so as to reduce or eliminate the radial loading of stresses on the bearings in which the rollers are mounted.Type: GrantFiled: January 15, 1992Date of Patent: June 1, 1993Inventor: Lori H. Hambric
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Patent number: 5142942Abstract: A differential device has a drive shaft, a pair of cones connected to it so as to rotate at the same speed, a pair of wheel shafts with a pair of ring wheels fitted on them such that the ring wheels are engaged in a rotational direction with conical surfaces of the cones. The ring wheels are slidable in an axial direction and are positioned parallel to the axis of the corresponding wheel shafts. The ring wheels are transmissively in contact with the outer conical surfaces of the pair of cones. A steering mechanism is included for moving these ring wheels axially on the wheel shafts proportional to the amount of steering. A pair of brake teeth are on the ring wheels and a corresponding pair of brake teeth are attached to a fixed casing. When one of the ring wheels moves toward a smaller-diameter side of the corresponding cone, and gets off of the corresponding conical surface, the other ring wheel keeps making transmissive contact with a larger diameter of the other cone corresponding to the other ring wheel.Type: GrantFiled: September 19, 1991Date of Patent: September 1, 1992Assignee: Hanix Kogyo Kabushiki KaishaInventor: Hiroshi Fukaya
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Patent number: 5139466Abstract: A continuously variable transmission has a variable transmission unit which provides a variable speed ratio between an input member (2) and an output member (3). The output member drives an output transmission member (11) through a simple drive connection (19-23) in a first regime of the transmission, and by way of a power recirculation system (7-10) in a second regime. The transmission is arranged so that only a clutching operation is required to effect a synchronous changeover between regimes.Type: GrantFiled: August 14, 1990Date of Patent: August 18, 1992Inventor: Forbes G. D B. Perry
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Patent number: 4709587Abstract: A friction drive arrangement for driving automotive and truck accessories from the automotive/truck engine comprising a drive wheel, with an outer rim surface, for mounting on an output shaft of the engine and one or more driven wheels for driving the accessories and having portions thereof mating frictionally with the drive wheel outer rim surface.Type: GrantFiled: September 2, 1986Date of Patent: December 1, 1987Inventor: Nicola Fiornascente
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Patent number: 4691592Abstract: A continuously-variable ratio automotive transmission, especially of the toroidal race rolling-traction type, in which mechanism comprising a clutch, a brake and two epicyclics--a reversing train and a mixing train--is interposed between the ratio-varying unit and the output member of the transmission as a whole. By operation of the clutch and the brake the elements within the mechanism may be arranged in two different combinations whereby the transmission may operate in first and second "regimes", one or other of which will offer efficient transmission throughout the entire operating range of the source of automotive power. The invention lies in a particular choice of the two different combinations resulting firstly in a transmission notably short in axial length.Type: GrantFiled: November 19, 1984Date of Patent: September 8, 1987Assignee: National Research Development CorporationInventor: Forbes G. de Brie Perry
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Patent number: 4625586Abstract: A connecting member slidably couples an elongated, resilient rod to a movable frame of a variable speed friction drive mechanism. The member is elongated and has an elongated bore non-parallel to the longitudinal axis of the member which slidably receives the resilient rod. The member is selectively rotatable on the frame, and thus the restoring force of the rod adjustably positions the frame at any one of a number of preselected positions wherein the resilient rod is unstressed and in its normal configuration. The member provides means for precise, selective adjustment of the control linkage for the drive mechanism while preventing stress-related failure of the rod.Type: GrantFiled: October 22, 1984Date of Patent: December 2, 1986Assignee: Dixon Industries, Inc.Inventor: Clair D. Splittstoesser
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Patent number: 4592247Abstract: In a continually adjustable ball-type planetary gear set which comprises a housing, a driving shaft, a driven shaft, rings provided with raceways engaging a plurality of planetary balls and positioned on the driving shaft, and a sleeve rotationally fixed with the driving shaft, the sleeve is a locked in rotation-fixed connection with the shaft only in the region of one end of the driving shaft by means of a toothing provided on the driving shaft to reduce static indetermination of the system and to reduce noises and wear of the sleeve.Type: GrantFiled: September 24, 1984Date of Patent: June 3, 1986Assignee: Neuweg Fertigung GmbHInventor: Gunter Mutschler
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Patent number: 4458558Abstract: A variable V-belt type continuously variable transmission for vehicles which includes an input shaft and an output shaft, a first torque transmitting gear mechanism alternatively connectable with the input shaft and the output shaft, a countershaft connected to the first torque transmitting gear mechanism, a variable V-belt and pulley assembly, one end of which is connected to the countershaft, and a second torque transmitting gear mechanism connected to an opposite end of the variable V-belt and pulley assembly and alternatively connectable with the input shaft and the output shaft such that torque transmission from the input shaft to the output shaft occurs via a first route through the first torque transmitting gear mechanism, the countershaft, the variable V-belt and pulley assembly and the second torque transmitting gear mechanism and via a second route through the second torque transmitting gear mechanism, the variable V-belt and pulley assembly, the countershaft and the first torque transmitting gear mType: GrantFiled: August 5, 1981Date of Patent: July 10, 1984Assignee: Aisin Seiki Kabushiki KaishaInventor: Andrew A. Frank
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Patent number: 4293050Abstract: A rotating drive wheel which drives a pair of output shafts. The driving of each of the output shafts proceeds via a mechanical transmission which delivers rotary motion from the drive wheel to the output shafts. A drive ratio delivered by each of the transmissions can be selectively varied.Type: GrantFiled: February 27, 1978Date of Patent: October 6, 1981Assignee: Caterpillar Tractor Co.Inventors: Alexander Goloff, Ralph E. Denning