Torque Transmitted Via Frictional Engagement Of Conical Or Frustoconical Surfaces Patents (Class 464/42)
  • Patent number: 10208807
    Abstract: Since a friction force generated on friction surfaces between a pressure plate and a first friction material is smaller than a friction force generated on friction surfaces between a lining plate and the first friction material, when a torque is input to a damper device, a slip first occurs between the pressure plate and the first friction material, and the lining plate and the first friction material integrally rotate. In this case, a hysteresis torque is generated based on the friction force between the pressure plate and the first friction material. Since a torque limiter mechanism also acts as a hysteresis mechanism in this way, a torque limiter mechanism is realized that can generate the hysteresis torque with a simple structure.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: February 19, 2019
    Inventors: Takeshi Miyagawa, Satoru Takahashi
  • Patent number: 8905213
    Abstract: The present invention relates to a pressure mounting slip coupling, wherein it is possible to transmit power in spite of an eccentricity or a declination generated in the axial direction, block a torque overload, flexibly correspond to the change of the distance between shafts, and improve durability and operation stability with an insulation function. The pressure mounting slip coupling (1) has one side flange (11) coupled with a brake disc (2), which is connected to the output shaft (O) of a motor, and another side flange (12) coupled with a flange (3), which is connected to the input shaft (I) of an object to be driven, so that the output shaft (O) of the motor and the input shaft (I) of the object to be driven are connected to each other.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: December 9, 2014
    Assignee: Nara Corporation
    Inventor: Chang Hwan No
  • Patent number: 8746101
    Abstract: A drive unit for driving a ring gear includes a motor, a transmission and a drive shaft, on which a pinion is arranged for driving the ring gear, wherein the drive unit includes a mechanical overload protection. In accordance with the invention the overload protection is arranged between the transmission and the pinion.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: June 10, 2014
    Assignee: Liebherr-Components Biberach GmbH
    Inventors: Norbert Hausladen, Matthias Sedlmaier
  • Patent number: 8267235
    Abstract: A friction clutch comprising a plurality of first clutch plates and a plurality of second clutch plates, wherein at least a portion of each of the first clutch plates is frusto-conical in shape and wherein at last a portion of each of the second clutch plates has a shape that conforms to the at least the portion of the first clutch plates. A method for forming a friction clutch is also provided.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: September 18, 2012
    Assignee: MAGNA Powertrain USA, Inc.
    Inventors: Timothy M. Burns, Sankar K. Mohan, Anupam Sharma
  • Publication number: 20110183806
    Abstract: A torque transmitting device includes a first race, a second race, and a biasing member. The torque transmitting device selectively transmits a torque in a rotational direction between a first member and a second member. The second member includes a surface that defines an annular bore having a decreasing diameter in an axial direction. The second race opposes the first race and includes a surface that opposes the second member and has the decreasing diameter in the axial direction. The first race and the second race define a predetermined torque limit. The biasing element biases the second race against the second member with a predetermined force that contributes to a predetermined holding torque between the surface of the second race and the surface of the second member that is less than the predetermined torque limit.
    Type: Application
    Filed: January 27, 2010
    Publication date: July 28, 2011
    Inventors: Scott H. Wittkopp, James M. Hart, Clinton E. Carey
  • Publication number: 20110098119
    Abstract: A torque fluctuation absorbing apparatus includes a first plate member, a second plate member rotatable relative to the first plate member, and a first friction member disposed between the first plate member and the second plate member and pressed against the first plate member in a slidable manner. The second plate member includes a first retaining surface that makes contact with the first friction member. The first friction member includes a plurality of grooves at a surface facing the first retaining surface of the second plate member, the grooves extending in a radial direction of the first friction member.
    Type: Application
    Filed: October 26, 2010
    Publication date: April 28, 2011
    Inventors: Tomohiro Saeki, Masanori Suzuki, Yuki Miyamoto, Atsushi Yamazumi, Masaki Kato, Hiroyuki Yamamoto, Toshiyuki Saburi, Ryota Akada
  • Patent number: 7837563
    Abstract: In a power transmission device 41, a tapered inner circumferential surface 79 increasing its diameter toward a rotating shaft body 47 is formed in a hub 75, and a tapered outer circumferential surface 83 increasing its diameter toward the rotating shaft body 47 is formed in a tubular member 81 and press-fitted to the tapered inner circumferential surface of the hub 75 so that, when an excessive load is applied between a rotating body 45 and a pulley 69, the hub 75 rotates with respect to the rotating shaft 45 and the tubular member 81 is withdrawn from the tapered inner circumferential surface 77 of the hub 75 and power transmission between the rotating shaft 45 and the pulley 69 is interrupted. Therefore, variation of working torque can be reduced.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: November 23, 2010
    Assignees: DENSO CORPORATION, Nippon Soken, Inc.
    Inventors: Motohiko Ueda, Hiroki Ishii
  • Patent number: 7801657
    Abstract: A control system for a vehicle having first and second wheels is provided that includes a differential apparatus adapted to distribute torque between the first and second wheels and a traction controller for controlling operation of the differential apparatus from vehicle launch up to a predetermined vehicle speed. The traction controller is configured to engage the differential apparatus in a first operating state according to at least one vehicle operating parameter indicative of a low traction operating condition and to further control engagement of the differential apparatus in a second vehicle operating state during the low traction operating condition according to a difference between an actual vehicle yaw rate and a predetermined target vehicle yaw rate. The control system also includes a stability controller for controlling engagement of the differential apparatus at or above the predetermined vehicle speed.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: September 21, 2010
    Assignee: Eaton Corporation
    Inventors: Damrongrit Piyabongkarn, Jae Y. Lew, John A. Grogg, Robert J. Kyle
  • Publication number: 20090291793
    Abstract: A system and method for retaining an object in a stationary position is provided. Generally, the system contains a pulley apparatus for retaining an object in a stationary position, the apparatus comprising a conical pulley rotateable about an axis, an exterior surface of the pulley having a convex shape, a pulley cable in communication with the exterior surface and an angular biasing mechanism applying a torquing force to the pulley.
    Type: Application
    Filed: May 23, 2008
    Publication date: November 26, 2009
    Inventor: Gerard Marchesseault
  • Patent number: 7523813
    Abstract: A brake application device for vehicles, in particular rail vehicles, which comprises a wear adjuster that is configured as a brake actuator with a screw drive, having a threaded spindle and a nut that can be screwed onto said spindle as the screw parts. At least one of the screw parts is electrically actuated for wear adjustment.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: April 28, 2009
    Assignee: Knorr-Bremse Systeme für Schienenfahrzeuge GmbH
    Inventors: Erich Fuderer, Peter Wolfsteiner, Thomas Wagner, Manfred Vohla
  • Patent number: 7182578
    Abstract: A ceramic spindle coupling structure includes a metal bushing which has a housing space that has an inlet and a tapered fastening section of a smaller diameter than the inlet to form a tight coupling with a ceramic spindle without embossing the ceramic spindle and the metal bushing.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: February 27, 2007
    Assignee: Zippy Technology Corp.
    Inventor: Chin-Wen Chou
  • Publication number: 20040116189
    Abstract: Three wedge clutch assemblies for power tools, drilling rigs and like machinery utilizing rotating drills. The first two wedge clutch assemblies comprise a pinion shaft adapted in shape to support sequentially a pinion gear, a bronze clutch cup, an optional bearing, and a steel wedge clutch spring washer retained by a fastener. A third wedge cup assembly is assembled on a modified motor shaft to include a bronze clutch cup adapted to accept a sprocket wheel, and a steel wedge clutch spring washer retained by a fastener.
    Type: Application
    Filed: December 12, 2002
    Publication date: June 17, 2004
    Inventor: Brian K. Bosk
  • Patent number: 6715379
    Abstract: An all terrain vehicle comprising a V-belt continuously variable transmission and a gear-type transmission, being capable of transmitting drive torque from an engine with controlled engine braking but without loss of the torque, thereby giving a rider an improved driving feel. The V-belt continuously variable transmission and the gear-type transmission are placed in this order from upstream in a power transmission path from the engine to wheels. A one-way clutch for transmitting only the drive torque from the engine to the wheel and a torque limiter for transmitting the torque less than a predetermined value are arranged in parallel, between, e.g., a countershaft and forward intermediate gears fitted onto the countershaft.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: April 6, 2004
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Akio Miguchi, Yasutaka Kobayashi
  • Patent number: 6612813
    Abstract: A power transmission mechanism has a first rotating member rotating around an axis, a second rotating member rotating around the axis and an elastic member located between the first rotating member and the second rotating member. The first rotating member has a first rotating member surface, and the second rotating member has a second rotating member surface. The elastic member has at least a protrusion contacting at least the first rotating member surface. The protrusion extends in a circumferential direction of the first rotating member. The protrusion has gradually tapering shape toward the first rotating member surface. The elastic member is deformed by compression as the elastic member engages the first rotating member surface and the second rotating member surface by rotation of the first rotating member, thereby causing relative rotation of the first rotating member and the second rotating member.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: September 2, 2003
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Kazuya Kimura, Akifumi Uryu, Takeshi Kawata, Akinobu Kanai, Takahiro Suzuki
  • Patent number: 6481512
    Abstract: If an external force is applied to any one of the legs of a walking robot, or if the output-end gear provided in the leg stops rotating, the motor and gears for driving the leg are prevented from breaking. More specifically, the thigh section 3 of the leg comprises a slip gear 12 arranged in a column of gears. The slip gear 12 slips in the direction opposite to the direction the slip gear is rotated with a force transmitted between an electric motor 11, i.e., drive means, and the thigh section 3, when this force becomes equal to or greater than a predetermined value.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: November 19, 2002
    Assignee: Sony Corporation
    Inventor: Masaki Nagatsuka
  • Patent number: 6416415
    Abstract: A symmetrical joint structure for integrally joining a first joint element and a second joint element together, wherein the first joint element has a first joint portion and the second joint element has a second joint portion for intercrossedly joined with the first joint portion. Each of the first and second joint portion has two semi-conical engagement tongues fittingly engaged in two semi-conical engagement grooves of the other joint portion respectively, so as to integrally united the first joint portion and the second joint portion together to form the symmetrical joint structure.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: July 9, 2002
    Inventor: Qi Yu
  • Patent number: 6299538
    Abstract: A coupling for transmitting torque between two parts which are rotatable relative to one another, which coupling comprises a friction coupling whose friction plates are each non-rotatably connected to the one and to the other of the parts which are rotatable relative to one another, having a pressure chamber which is filled with a highly viscous fluid and which is formed by a housing formed in one of the rotatable parts and by a displaceable piston sealed relative to said housing, and having a pump unit in which there rotates a conveying member connected to the other one of the rotatable parts, wherein a reservoir for a highly viscous fluid is provided in the housing, which reservoir is connected to the pump unit, wherein the pressure chamber is supplied by the pump unit and the piston loads the friction coupling and wherein the pump unit is provided in the form of an internally toothed rotor pump and the conveying member forms an externally toothed rotor which is concentrically connected to the other one of
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: October 9, 2001
    Assignee: GKN Viscodrive GmbH
    Inventor: Theodor Gassmann
  • Patent number: 6076413
    Abstract: A starter for a motor vehicle comprises an electric motor having an output shaft which drives a coaxial starter head through a speed reducer. The speed reducer incorporates an epicyclic gear train, including a cylindrical casing within which the internally toothed crown wheel of the epicyclic gear train is mounted in rotation. The crown wheel is coupled in rotation to the casing through a friction type torque limiting device, which is interposed axially between the crown wheel and a transverse plate of the casing. The torque limiting device includes at least one annular transverse friction surface of the crown wheel, which is biased elastically into axial engagement against a reaction surface coupled in rotation to the casing.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: June 20, 2000
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Jacques Verot, Charles Girardot
  • Patent number: 6011942
    Abstract: It is desirable if the lengthwise center axis of a cylindrical rotating member such as a photoreceptor drum is aligned exactly with the center axes of the support shafts. However, as it is impossible to eliminate manufacturing errors in components, it is unavoidable for there to be a slight angle of intersection between the center axis of the cylindrical rotating member and the center axes of the support shaft. Consequently, the object of the present invention is to provide a support mechanism for the cylindrical rotating member whereby the cylindrical rotating member exhibits little unevenness of rotation. When lengthwise axis of the cylindrical rotating member forms angle of intersection .alpha. with lengthwise axis of shaft, this angle .alpha.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: January 4, 2000
    Assignee: Minolta Co., Ltd.
    Inventors: Hajime Taniguchi, Tooru Watanabe, Ikuro Chimoto, Akihiro Nakamura, Masato Togami
  • Patent number: 5568704
    Abstract: A garage door operator is disclosed to have a front coupling for a threaded screw of the operator and the rotor of the motor. The coupling includes a first coupling device that is a unitary coupling member with opposing recesses for receiving each of the rotor shaft and an end portion of the screw. The unitary coupling member thereby connects the screw to the motor for torque transmission from the motor. The second coupling device includes a thrust containment device that is supported on the screw, and an intermediate assembly disposed between the thrust containment device and an end portion of the guide rail of the door operator. A retainer component of the intermediate assembly restricts expansion of the thrust containment device.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: October 29, 1996
    Assignee: GMI Holdings, Inc.
    Inventors: Gregory E. Williams, James A. White, Nicholas A. Dragomir, James W. Stottsberry
  • Patent number: 5407046
    Abstract: A torque limiter has a shaft member and a cylinder member. A conical outer circumferential surface of the shaft member is fitted to a conical inner circumferential surface of the cylinder member. Top surfaces of convex portions form part of the conical outer circumferential surface, while top surfaces of convex portions form part of the conical inner circumferential surface. When the torque limiter is set up, the convex portions and the convex portions are urged against each other, whereby the cylinder member and the shaft member are frictionally coupled. When the shaft member and the cylinder member rotate relative to each other, the relative rotational position between the convex portions changes, so that the cylinder member and the shaft member are no longer frictionally coupled.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: April 18, 1995
    Assignee: Koyo Seiko Co., Ltd.
    Inventor: Toshinobu Kawasaki
  • Patent number: 4919236
    Abstract: A screw lift comprises a lift car (2) which is movably supported on an upright fixed screw (4) and carries a nut (54) in engagement with the screw and a belt drive for rotating the nut on the screw and thereby driving of the lift car along the screw. The nut (54) is rotatably journalled in a lubrication and bearing housing (62), which is connected with the lift car (2) and out of which it extends with a portion, that widens essentially conically and carries a belt pulley (56) with a correspondingly conically shaped hole. The belt pulley and the nut are mutually somewhat axially shiftable. A pulse transmitter (130,132) is arranged as the only position, direction and velocity determining device for the lift for sensing the position of the nut on the screw and emitting signals corresponding thereto.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: April 24, 1990
    Assignee: NTD Hiss Nartransportdon AB
    Inventors: Klas Karlsson, Rune Bergvall
  • Patent number: 4375194
    Abstract: The drive shaft assembly comprises first and second telescoping shafts supported above ground level. A motor is coupled to the first shaft for extending it in an axial direction. Another motor is connected to the second shaft for rotating the second shaft about its longitudinal axis. These shafts are connected by a coupling so that the second shaft rotates the first shaft in all positions of the first shaft. The first shaft terminates at a free end in a frictional engageable end portion.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: March 1, 1983
    Assignee: S I Handling Systems, Inc.
    Inventor: Peter H. Rohrbach