Patents Examined by Andrea Pitts
  • Patent number: 5295921
    Abstract: A system having a pair of axle shafts; an input shaft for transmitting torque; and a differential for transmitting motion from the input shaft to the axle shafts and in turn presenting a planet carrier angularly integral with the input shaft, and a pair of sun gears; the system also presenting a first clutch interposed between each axle shaft and a respective sun gear, a second clutch interposed between each axle shaft and the planet carrier; and a device for controlling the clutches and continuously varying distribution of the torque between the axle shafts.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: March 22, 1994
    Assignee: Centro Ricerche Fiat Societa Consortill per Azioni
    Inventors: Luigi Ippolito, Giorgio Lupo, Alessandro Lorenzini
  • Patent number: 5293977
    Abstract: Apparatus for transmitting torque from the output shaft of the engine to the input shaft of the variable-speed transmission in a motor vehicle has a primary flywheel which is connectable to the output shaft, a secondary flywheel which is connectable to the input shaft by engaging a friction clutch, and one or more dampers which oppose rotation of the flywheels relative to each other. The flywheels define an annular chamber for the damper or dampers, and such chamber surrounds two closely adjacent portions of the flywheels which define a radially extending clearance for the flow of cooling air. The radially inner portion of the chamber is separated from the clearance by an annular seal which is located at most midway between the radially innermost and radially outermost portions of an annular friction surface on the secondary flywheel. Such friction surface is adjacent one friction lining of a clutch plate forming part of the friction clutch and being connectable to the input shaft of the transmission.
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: March 15, 1994
    Assignee: Luk Lamellen und Kupplungsbau GmbH
    Inventor: Oswald Friedmann
  • Patent number: 5293978
    Abstract: An apparatus for transmitting torque between the output element of an internal combustion engine and the input element of a variable-speed transmission in a motor vehicle has a first flywheel which is screwed or bolted to the output element and a second flywheel which is coaxial with and rotatable relative to the first flywheel and is connected to the input element by the clutch plate of a friction clutch. One or more dampers are provided in a lubricant-containing annular chamber of the first flywheel to oppose rotation of the flywheels relative to each other, and each damper has an annulus of arcuate coil springs acting in the circumferential direction of the flywheels. The cover of the clutch has stressing arms which extend into the chamber and engage the springs.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: March 15, 1994
    Assignee: Luk Lamellen und Kupplungsbau GmbH
    Inventors: Wolfgang Reik, Johann Jackel
  • Patent number: 5293785
    Abstract: A cable strand end fitting includes a housing adapted to be attached to a mounting member and having a passageway extending therethrough. The cable strand end fitting also includes a screw member including a passageway extending therethrough, whereby a strand extends through the passageway and has a retainer member which abuts the screw member. The cable strand end fitting includes a structure for adjusting the tension in the strand.
    Type: Grant
    Filed: September 17, 1991
    Date of Patent: March 15, 1994
    Assignee: Nagle Industries, Inc.
    Inventor: Norman B. Lichtenberg
  • Patent number: 5289908
    Abstract: A cutting or bending machine has a combined clutch and brake mechanism cooled by air flow from an electrically powered impeller. A guide duct directs the air flow substantially uniformly through the entire volume of the combined clutch and brake mechanism, preferably to the outer peripheral edges of the mechanism, so that generated heat is dissipated continuously and the machine can be operated more productively. The impeller fan and the guide duct may direct the air flow either axially or radially of the mechanism and the air flow may be either inwardly or outwardly of the mechanism.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: March 1, 1994
    Assignee: TI Interlock Limited
    Inventor: Ian N. Hakon
  • Patent number: 5285879
    Abstract: There is provided a two-speed drive unit for a motor drive, the motor drive having a housing and a main rotatable member. The two-speed drive unit comprises a two-speed drive housing secured to the motor drive housing and a secondary motor secured to the two-speed drive housing. The driveshaft of the secondary motor extends into the two-speed drive housing. The two-speed drive unit further comprises a gear train operably associated with both the secondary motor driveshaft and a clutch, the clutch being disposed between the gear train and the rotatable member of the main motor drive for engagement and disengagement of the gear train with the rotatable member of the main motor drive. The clutch is normally engaged by a plurality of coil springs and disengaged by the action of an AC voltage coil. Control means are provided which are capable of storing predetermined positions of the motor drive at which engagement or disengagement of the two-speed drive is desired.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: February 15, 1994
    Assignee: Midwest Brake Bond Co.
    Inventor: Gordon M. Sommer
  • Patent number: 5284234
    Abstract: A centrifugal clutch comprising an elongate rotary power input shaft with front and rear ends, a plurality of axially spaced plates including a front end plate in axial fixed rotary driving engagement with the shaft, a rear end plate in axially shiftable and rotary driving engagement with the shaft, and axially shiftable intermediate plates in rotary driving relationship with the shaft, an elongate rotary power output part in radial outward spaced relationship about the plates; a plurality of axially spaced disks in axially shiftable and rotary driving engagement with the output part and in leafed interengaged relationship with the plates; a plurality of actuating weights spaced circumferentially about the shaft on radial planes and forward of the front plate, each weight has a radially outwardly and axially rearwardly disposed pivot point pivotally engaged in a radially inwardly and axially forwardly disposed pivot seat on the front plate; and, elongate tow members with rear ends coupled with the rear plate
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: February 8, 1994
    Inventor: Anthony Miglizzi
  • Patent number: 5279398
    Abstract: A torsion damping device, for example for a motor vehicle fluid transmission, includes a first pair of guide rings, a second pair of guide rings fixed to a torque input element, a first hub fixed to a second pair of guide rings, a second hub, a first series of springs coupling the first pair of guide rings to the first hub, a second series of springs coupling the second pair of guide rings to the second hub, and an abutment member for limiting the relative angular displacement between the first pair of guide rings and the first hub. The first pair of guide rings is fastened to the torque input element by fastening members. These fastening members and the abutment member are both located radially inwardly of one of the two series of springs, and radially outwardly of the other series.
    Type: Grant
    Filed: October 22, 1992
    Date of Patent: January 18, 1994
    Assignee: Valeo
    Inventors: Michel Graton, Fabrice Tauvron
  • Patent number: 5279402
    Abstract: The invention relates to a freewheeling device 11 in the case of which the outer freewheeling component 14 and the inner freewheeling component 17 are connected in the main torque transmitting direction by locking members 25 which engage apertures 24 of the inner freewheeling component 17 and recesses 26 of the outer freewheeling component 14 and which permit one of the freewheeling components 14 to be overtaken by the other freewheeling component 17 when a certain speed is exceeded. If the speed is below the specified speed, an additional switching element is released via a speed-dependent switching device 29, so that the switching element 30, under the influence of a spring 36, is transferred into a position where it supports the locking member 25 to prevent them from escaping radially inwardly, thereby cancelling the freewheeling function.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: January 18, 1994
    Assignee: GKN Automotive AG
    Inventor: Wolfgang Beigang
  • Patent number: 5277288
    Abstract: A clutch for a tire lift/carrier winch includes a drive plate and a driven plate having a plurality of elongate springs thereon. The driven plate includes circumferentially spaced driven end portions which are positioned in driving engagement with circumferentially spaced drive portions of the drive plate to permit rotation of the driven plate upon rotation of the drive plate when the load on the cable winding spool is within a prescribed limit. However, when the load on the cable winding spool exceeds the prescribed limit, the elongate springs on the driven plate function as cantilevered spring segments deflectable about respective fulcrums in such a manner as to prevent rotation of the driven plate upon rotation of the drive plate.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: January 11, 1994
    Assignee: Sparton Corporation
    Inventors: Charles E. Barnum, Donald R. Rempinski, Donald R. Britt
  • Patent number: 5277289
    Abstract: The invention is directed to a fluid friction coupling which includes a drive shaft made of steel and a drive disc made of an aluminum alloy. A coupling housing defines a work space in which the drive disc is disposed. The drive disc includes a hub defining an internal thread and the drive shaft has an end lug defining an outer thread. The drive shaft and hub are threadably engaged and tightened with respect to each other so as to cause the threads to conjointly define a thread joint which is plastically deformed to provide a permanent joint between the drive disc and the drive shaft.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: January 11, 1994
    Assignee: Behr GmbH & Co.
    Inventor: Harald Dax
  • Patent number: 5275266
    Abstract: In a double clutch change-speed gearbox for motor vehicles with two simultaneously and oppositely controlled clutches (KA, KS), one of the higher gear stages is connected, as the selected gear, to one clutch (KS) and the other gear stages can be connected to the other clutch (KW). On engagement of the first-mentioned clutch (KS), which is controlled by means of its own switching element (SO), the other gear stage positions can be arbitrarily selected--also, in fact, by means of a conventional, manually actuated shift mechanism (SH, 17).
    Type: Grant
    Filed: April 28, 1992
    Date of Patent: January 4, 1994
    Inventor: Valentin Balass
  • Patent number: 5273143
    Abstract: For emergency operation of an automatic friction clutch (3) of a truck which is operated during normal running by an electronic controller (9) via an electric motor driven actuator (11) and a hydraulic system (19, 21, 23), it is proposed that the clutch be controlled manually via a compressed air actuator (29), in particular via a compressed air servo actuator, by means of a changeover valve (39) which connects the compressed air actuator (29) alternately to a compressed air source (37) or via a flow throttle (41) to the atmosphere.
    Type: Grant
    Filed: July 29, 1992
    Date of Patent: December 28, 1993
    Assignee: Fichtel & Sachs AG
    Inventors: Reiner Voss, Bernd Gaubitz, Gerhard Gasper, Holger Westendorf
  • Patent number: 5273147
    Abstract: The invention relates to a locking device 4 for a freewheeling unit 1 of a non-directly driven axle of a motor vehicle driven by a directly driven axle. To lock the freewheeling unit 1 there is provided a first drive element 2 with a number of circumferentially distributed apertures 15 holding radially displaceable locking elements 16. The locking elements, for the purpose of establishing a non-rotating connection between the first drive element 2 and the second drive element 3, may partially enter recesses 17 of the second drive element 3 corresponding to the apertures. Radial displacement of the locking elements 16 is achieved by a spring loaded axially movable control element 10. Displacement of the control element 10 is achieved by radially outward displacement of centrifugal masses 20.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: December 28, 1993
    Inventors: Wolfgang Beigang, Adrian Chludek
  • Patent number: 5271487
    Abstract: A driven disk assembly includes a hub assembly and a support plate assembly to which friction pads are attached. If the driven disk assembly includes a free travel feature wherein the hub assembly is free to rotate slightly with respect to the support plate assembly, it is difficult to align splines of the hub assembly with cooperating splines of a transmission input shaft upon installing a clutch including the driven disk assembly within a drive train. In order to negate free travel prior to installation, a small quantity of rupturable material is disposed within a slot that accommodates lost notion between the support plate assembly and hub assembly. Upon initially rotating the support plate assembly, the material ruptures, allowing relative motion between the support plate assembly and hub assembly so that the free travel feature and damping springs disposed between the assemblies function as intended.
    Type: Grant
    Filed: November 27, 1992
    Date of Patent: December 21, 1993
    Assignee: Dana Corporation
    Inventor: Frank L. Bruno
  • Patent number: 5269399
    Abstract: A driving force transmission device for a vehicle has a homokinetic joint having an outer ring and a clutch device having an outer ring coupled to the outer ring of the homokinetic joint. An input shaft is rotatably inserted in the outer rings. A cage is rotatably mounted between opposed surfaces of the outer rings and the input shaft. The cage has pockets. Engaging elements are mounted in the pockets. They are adapted to engage the opposed surfaces when the input shaft and the cage rotate relative to each other either clockwise or counterclockwise. Elastic members are mounted in the pockets to keep the engaging elements in a not-engaged position. The cage and the input shaft are coupled together with a gap extending in the direction of rotation formed therebetween so as to be rotatable together. A differential member are mounted on the cage or the input shaft to produce a difference in rotation therebetween.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: December 14, 1993
    Assignee: NTN Corporation
    Inventors: Kenichiro Ito, Hiromi Nojiri, Kenro Adachi
  • Patent number: 5269400
    Abstract: A synchronizer assembly for use in manual transmissions for automotive vehicles wherein an internally splined hub is operatively connected to a driven rotary shaft, an internally splined clutch sleeve being rotatably connected to said hub by external splines on the hub and axially slidable thereon, a shift fork engaging and actuating said sleeve, one or more blocker rings located adjacent to the sides of said hub, and one or more transmission gears at the sides of said hub beyond said blocker rings, the gears and blocker rings having peripheral teeth adapted to be engaged by the splines on said clutch sleeve, the blocker rings and gears also having cooperating conical friction surfaces, respectively, the clutch sleeve having an interior annular groove centrally located therein and facing said hub to receive a generally circular wire spring, which spring, after some initial allowable travel of the sleeve, resists movement thereof and abuts projections extending inward from either blocker ring on movement of cl
    Type: Grant
    Filed: October 20, 1992
    Date of Patent: December 14, 1993
    Assignee: Borg-Warner Automotive, Inc.
    Inventor: Mark J. Fogelberg
  • Patent number: 5265705
    Abstract: A method of preventing a wheel loader from slipping, aiming at reducing the amount of slip of the loader during excavating operation using it, and preventing the decline in operational efficiency due to the slip. The method of preventing a wheel loader from slipping comprises the steps of detecting the occurrence of slip in accordance with the difference in the number of revolutions between a pair of left and right drive wheels and the change thereof, and controlling the clutch pressure so that the clutch is put in half-clutch condition upon detection of the occurrence of slip.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: November 30, 1993
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Shinji Takasugi, Masayuki Mori
  • Patent number: 5265708
    Abstract: A clutch for a tire lift/carrier winch includes a drive plate and a driven plate having a plurality of elongate springs thereon. The driven plate includes circumferentially spaced driven end portions which are positioned in driving engagement with circumferentially spaced drive portions of the drive plate to permit rotation of the driven plate upon rotation of the drive plate when the load on the cable winding spool is within a prescribed limit. However, when the load on the cable winding spool exceeds the prescribed limit, the elongate springs on the driven plate function as cantilevered spring segments deflectable about respective fulcrums in such a manner as to prevent rotation of the driven plate upon rotation of the drive plate.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: November 30, 1993
    Assignee: Sparton Corporation
    Inventors: Charles E. Barnum, Donald R. Rempinski, Donald R. Britt
  • Patent number: 5265710
    Abstract: A hydraulic self-adjusting device for clutch control cables has a main housing, where one of the ends thereof is provided with an end cap and the other rear end is formed with an extension for attachment to the pressure plate fork. The main housing has a channel which through a regulator places the two chambers in communication determining the position of the piston and contains a liquid. An adjusting rod, the end of which projecting to the outside, is attached to the cable linking with the clutch pedal, while the other end is attached to the piston formed by a shut-off valve. A control spring permanently pulls against the said cable through the rod. The portion of the rod contained in the main housing compensate in length the wear of the clutch plate lining.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: November 30, 1993
    Assignee: Pujol y Tarrago S.A.
    Inventors: Carlos Gabas, Agustin Roca