Patents Examined by Saul J. Rodriguez
  • Patent number: 5967286
    Abstract: An adjustment mechanism for use with a driven clutch of continuously variable transmission has an adjustor ring that receives a first end of a spring. A follower plate be carried by one of the pulley halves has a surface to interact with the other pulley half. The follower plate receives the adjustor ring. A holding element, a set screw in a preferred embodiment, retains the adjustor ring in a position relative to the follower plate. The mechanism allows rotation of the adjustor ring relative to the follower plate to adjust the spring force.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: October 19, 1999
    Assignee: Starting Line Products, Inc.
    Inventors: Joseph Hokanson, Allen Roberts, Robert Warbrick
  • Patent number: 5967279
    Abstract: A hub clutch assembly is designed so that fluid pressure is used only while the driving mode is being changed over between a four-wheel drive position and a two-wheel drive position, while eliminating the necessity of holding a coupling member in position once the driving mode has been changed over. A driven member and a driving member are coupled together and uncoupled from each other by a slider which is moved under a negative or positive air pressure. A spring is used to maintain the slider in the two-wheel drive position, while a magnet is used to maintain the slider in the four-wheel drive position.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: October 19, 1999
    Assignee: NTN Corporation
    Inventors: Kenichiro Itoh, Takayuki Norimatsu, Isao Hori, Katsuhisa Suzuki, Kenro Adachi, Koji Akiyoshi
  • Patent number: 5966995
    Abstract: An operating shaft which provides compensation for axial and spatial misalignment between a rotatable component mounted within an enclosure and a rotating apparatus generally outside the enclosure is disclosed. The operating shaft has a first end dimensioned to be slidably received within a receiving portion of the rotating apparatus such that the shaft is maintained in a fixed angular position with respect to the rotating apparatus. The shaft is axially slidable with respect to the rotating apparatus such that it will provide compensation for axial misalignment between the rotatable component and the rotating apparatus. The shaft has a second end configured to engage the rotatable component such that rotation of the rotating apparatus will produce a corresponding rotation of the rotatable component. The shaft also has a spatial compensation device which is integrally formed from the shaft between the first and second ends.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: October 19, 1999
    Assignee: Square D Company
    Inventors: Stanley H. Edwards, Jr., T. Ray Robbins, Barry Edward Powell
  • Patent number: 5964328
    Abstract: A hydrokinetic torque converter includes an impeller cover and bypass clutch located within the impeller housing. The impeller cover has welded to it a clutch plate, which carries friction material adjacent the clutch piston. The piston has legs that extend axially into engagement with helical springs carried in a damper assembly arranged in series with the damper between the impeller cover and the input shaft of the transmission. The springs are located in a retainer that accommodates two, three or four springs, as required by the torque requirements of the clutch and damper. The spring constant of the damper can be linear or piecewise linear over the full displacement range of the damper springs.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: October 12, 1999
    Assignee: Ford Global Techologies, Inc.
    Inventors: John William Fallu, Fraser John MacDonald, Stephen Harold Henning
  • Patent number: 5950786
    Abstract: A disc clutch assembly for transmitting torque from a torque source to a torque destination is provided, which includes a first plate with apertures and a second plate located between the torque source and the first plate, where the second plate is in driving engagement with the torque source. Fastening members are used to secure the first plate to the second plate. Located between the first and second plates are a driving plate with apertures and a driven plate which has a frictional surface and an interface for engaging with the torque destination. A resilient member is secured to the first plate to provide force toward the torque source and to release the force. Substantially dowel-shaped members are positioned adjacent the driving plate and are slidable through the apertures of the first plate to be adjacent the resilient member.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: September 14, 1999
    Assignee: Delta Clutch, Inc.
    Inventor: Paul E. Mahoney
  • Patent number: 5950781
    Abstract: A twin-clutch transmission having the driving gear wheels of adjacent gears on different transmission input shafts permits skipping one gear stage while shifting gears, i.e. shifting between gears whose driving gear wheels are on the same transmission input shaft, by using an auxiliary gear on the other transmission input shaft to supply a filler torque while shifting between the initial gear and a selected gear.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: September 14, 1999
    Assignee: Volkswagen AG
    Inventors: Panagiotis Adamis, Bernd Cappelmann, Reinhold Haack, Harald Ludanek, Ansgar Damm
  • Patent number: 5947252
    Abstract: A spacer system for a differential lock assembly having a fixed clutch and a sliding clutch with a sliding-clutch collar. The spacer system comprises a shift fork member and a bearing adjuster which contact when the sliding clutch and fixed clutch are engaged so as to prevent the shift fork member from binding within the sliding-clutch collar, without requiring a manual adjustment to account for tolerance stackups or gear or bearing positional adjustments.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: September 7, 1999
    Assignee: Dana Corporation
    Inventor: James F. Ziech
  • Patent number: 5947242
    Abstract: An electrohydraulic control device for a drive train of a machine is disclosed. The machine includes an engine, a torque converter having an impeller element, a reactor element and a turbine element, an impeller clutch drivingly connected between the engine and the impeller element, and a set of service brakes. An impeller brake is drivingly connected between the impeller element and a stationary support member. A controller receives at least one input signal representing an operation of the drive train and responsively controls one of the impeller clutch, impeller brake and brake set.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: September 7, 1999
    Assignee: Caterpillar Inc.
    Inventor: Todd D. Creger
  • Patent number: 5941356
    Abstract: A pressure plate subassembly for a motor vehicle friction clutch, which subassembly comprises an application plate or pressure plate which, when assembled in a motor vehicle friction clutch, is connected to a flywheel to rotate jointly around an axis and can be axially displaced with respect to the flywheel. The pressure plate has a friction surface which faces the flywheel, and at least one clearance sensor is provided on the pressure plate. The clearance sensor has an operation lever segment that cooperates with a wear adjustment device, and an axial stop segment which cooperates with the flywheel. The pressure plate subassembly comprises the displacement contrivances, which displacement contrivances prevent a displacement of the clearance sensor, of which there is at least one, with respect to the pressure plate prior to the assembly of the pressure plate subassembly to the flywheel.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: August 24, 1999
    Assignee: Fichtel & Sachs AG
    Inventors: Michael Weiss, Reinhold Weidinger, Achim Link, Andreas Orlamunder, Uwe Sahlmuller
  • Patent number: 5937984
    Abstract: To provide a separate hub type damper disc assembly in which a force to be applied to engagement projections is reduced in view of the fatigue service life and a weight of a hub is reduced by reducing a size of the hub while maintaining a satisfactory durability of the hub, the damper disc assembly 1 includes a hub 2, a flange 3, first torsion springs 4, a clutch plate 5 and a retaining plate 6. The hub 2 has a plurality of engagement projections 2c and 2d on its outer circumferential portion. The flange 3 is disposed on the outer circumference of the hub 2 and has, in the inner circumferential portion, engagement cutaway portions 3b and receiving cutaway portions 3c. Engagement cutaway portions are engaged with the engagement projections 2c and 2d through a predetermined gap. The first torsion springs 4 are received in spaces defined by the adjacent engagement projections 2d and the receiving cutaway portions 3c. The clutch plate 5 is connected to the flange 3.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: August 17, 1999
    Assignee: Exedy Corporation
    Inventor: Hiroshi Kimura
  • Patent number: 5934430
    Abstract: A motor vehicle clutch includes an axis of rotation, a pressure plate, a cover, an apply spring, a release bearing, a stator housing, a stator, a rotor, a rotor housing and a plurality of cam followers. The pressure plate is concentric with the axis of rotation. The cover extends radially over the pressure plate. The apply spring is disposed between the cover and the pressure plate and biases the pressure plate away from the cover. The release bearing is concentric with and axially displaceable along the axis of rotation and is connected to the apply spring for selectively deflecting the spring with axial movement. The stator housing is stationary and is concentric with the axis of rotation. The stator is fixed within the stator housing and has a plurality of poles with windings there about. The rotor is also concentric to the axis of rotation and is operably excited by the stator. The rotor housing is fixed to the rotor. The rotor housing has a plurality of cam ramps arcuately disposed about the axis.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: August 10, 1999
    Assignee: Eaton Corporation
    Inventors: Sergei F. Kolomeitsev, Troy S. Reinoehl, J. Michael Lewis, Michael Lee Bassett, Rock LeRoy Hartshorn
  • Patent number: 5934433
    Abstract: An actuator for automated operation of a friction clutch includes a drive that is connected with an input part of a gearing and an output part of the gearing that is movable into operative connection via a transmission member with a disengagement bearing of the friction clutch. The transmission element has a pitch region rotatable for driving an engagement element into force-applying contact with a disengagement bearing for displacing the disengaging bearing and thereby disengaging the clutch.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: August 10, 1999
    Assignee: Fichtel & Sachs AG
    Inventors: Lutz Leimbach, Erwin Bair, Reiner Voss, Heiko Schulz-Andres
  • Patent number: 5931051
    Abstract: A drive shaft vibration dampener having an outer cylindrical housing which attaches to the end of the drive shaft. An inertia disc mounts within the housing, mounting to the housing through a spherical bearing which permits rotational and radial displacement of the inertia disc relative to the housing. A cover plate encloses the internal chamber housing the inertia disc, and the internal chamber is filled with elastomeric urethane. As the drive shaft deflects radially, the inertia disc lags behind, compressing the urethane and exerting a counteracting radial force on the housing, and the rigidly attached drive shaft.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: August 3, 1999
    Inventor: Vern D. Ott
  • Patent number: 5927453
    Abstract: A device for overload protection and for braking a machine part driven by a motor (2), in particular, a tool driven by a cam gear in a stamping and/or bending machine, comprises a module (3), an overload clutch (4) disengaging after exceeding a torque threshold, and a freewheel (6) which, during the braking of the drive shaft (1), blocks in the direction of drive, each being arranged on the drive shaft (1) behind one another in the drive line extending from the motor (2) to the machine part.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: July 27, 1999
    Assignee: Micron Technology, Inc.
    Inventor: Gerhard Hinterlechner
  • Patent number: 5921366
    Abstract: A friction element which can be used in the lockup clutch of a hydrokinetic torque converter and has a friction face engaging a complementary friction face when the clutch is at least partially engaged is provided with one or more channels which are machined, impressed or otherwise formed in its friction face to permit a fluid coolant to flow from a first compartment containing a pressurized fluid into a second compartment wherein the fluid pressure is lower. Each channel includes at least one fluid flow restricting portion which communicates with the first compartment and establishes a turbulent flow of fluid into a major portion of the respective channel. The major portion is designed to establish a laminar flow of fluid toward one or more outlets communicating with the second compartment.
    Type: Grant
    Filed: November 28, 1997
    Date of Patent: July 13, 1999
    Assignee: LuK Getriebe-Systeme GmbH
    Inventors: Ernst Walth, Georg Weidner
  • Patent number: 5915511
    Abstract: The drive plate 25 in the lock-up clutch 15 is composed of the ring portion 32 and a plurality of protrusions 33 being positioned around the ring portion 32. The protrusion 33 has the piston connecting part 34 which projects outward in a radial direction from the ring portion 32 and connects with the piston 16 in a manner not to rotate but to move freely in an axial direction. The protrusion 33 also has the coil spring connecting part 35 which project inward in a radial direction from the ring portion 32. There is the opening 36 in the protrusion 33. The side plate 27 is placed at the side of the drive plate 25 and has the first coil spring receptacle 37 at the outer circumferential side corresponding to the coil spring connecting part 35 and has the second coil spring receptacle 39 at the inner circumferential side. The inner circumferential part of the driven plate 26 is fixed to the turbine 3.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: June 29, 1999
    Assignee: Exedy Corporation
    Inventor: Mitsugu Yamaguchi
  • Patent number: 5906256
    Abstract: An automatic clutch unit for vehicle use includes a slave cylinder to engage and disengage a friction clutch, an automatically operated hydraulic fluid feed mechanism to be operated by a pump, selectively connected with the slave cylinder, a manually operated hydraulic fluid feed mechanism to be operated by the action of a clutch pedal, selectively connected with the slave cylinder and a change-over cylinder having a piston pushed to one side of the cylinder by a spring, arranged among a hydraulic fluid pipeline of the manually operated hydraulic fluid feed mechanism, a hydraulic fluid pipeline of the automatically operated hydraulic fluid feed mechanism and a hydraulic fluid pipeline of the slave cylinder, wherein the piston side of the cylinder is connected with the hydraulic fluid pipeline of the manually operated hydraulic fluid feed mechanism, and the spring side of the cylinder is connected with the hydraulic fluid pipelines of the automatically operated hydraulic fluid feed mechanism and the slave cyli
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: May 25, 1999
    Assignee: Isuzu Motors Limited
    Inventors: Masahiko Hayashi, Kazuhiko Kobayashi, Hiroyuki Arai, Nobuo Sugamura
  • Patent number: 5906257
    Abstract: A clutch cover assembly (1) includes a clutch cover (2), a pressure plate (3), a diaphragm spring (4), stud pins (11), a conical spring (5) and a support plate (10). The conical spring (5) is disposed between the diaphragm spring (4) and a support portion (10a) and biases the diaphragm spring (4) away from engagement with the pressure plate (3). The support plate (10) includes the support potion (10a) and a protruding portion (10b) which supports the diaphragm spring (4).
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: May 25, 1999
    Assignee: Exedy Corporation
    Inventor: Hiroshi Mizukami
  • Patent number: 5906255
    Abstract: In a motor vehicle transmission multiple-disc clutch assembly, a waved ring-shaped spring is provided within an annular groove formed in the clutch piston held within the clutch housing. The waved spring preferably is formed from spring steel and has five upwardly directed segments and five downwardly directed segments. When inserted in the annular groove and not flexed or compressed, a portion of the upwardly directed segments extends above the upper surface of the outer rim of the clutch piston by between about 0.025 to 0.040 inch. The waved spring opposes axial forces exerted on the clutch piston and the clutch pack (plurality of clutch plates) at a rate of 200 to 240 psi for the first 0.030 inch compression until it is substantially flattened with the upwardly directed segments to a height even with the outer rim of the clutch piston. The waved spring is free of radially extending projections or tabs and is movable with relation to the clutch piston.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: May 25, 1999
    Assignee: Deltrans, Inc.
    Inventor: Edward Lee
  • Patent number: 5904234
    Abstract: The invention relates to a multi-plate clutch mechanism that includes a pressure plate mechanism is fixed to a first cylindrical portion with friction plates disposed between the pressure plate mechanism and a flywheel connected to the first cylindrical portion. The pressure plate mechanism includes a clutch cover supported on the first cylindrical portion. A pressure plate is disposed between the clutch cover and first and second friction plates and a diaphragm spring is disposed between the clutch cover and the pressure plate. A solid annular ring is disposed between the diaphragm spring and the pressure plate.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: May 18, 1999
    Assignee: Exedy Corporation
    Inventors: Toshiya Kosumi, Yoshinobu Fukuda