Clutches Patents (Class 192/30R)
  • Patent number: 6089363
    Abstract: A mechanism of a simple structure, in which always stable and discretionary frictional resistance can be produced even when the speed of rotary movements or rectilinear movements of the subject structure changes and, moreover, the magnitude of the frictional force can be easily controlled by changing the magnitude of a load. Namely, when a rotary member 1 is rotated while a load toward the axial direction is being applied, numerous rollers 2 make rolling motions in contact with the rotary member 1 and a passive member 3. The rollers 2 make rolling motions along a track of rotation of the rotary member 1. The rollers 2 are restrained to roll toward a direction being inclined by a prescribed angle by a cage 4. This results in producing a frictional force in proportion to the magnitude of the load being applied to the axial direction between the rollers 2 and the rotary member 1 nd between the rollers 2 and the passive member 3.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: July 18, 2000
    Inventor: Kenji Mimura
  • Patent number: 6040059
    Abstract: A component (17) made of an aluminum silicon cast alloy whose surface is at least partly subjected to an anodic treatment to produce an oxide layer, which component comprises, prior to the anodic treatment, a surface-proximate deformation zone (4) configured as a homogeneous zone in which the silicon is uniformly distributed in the .alpha.-mixed crystal (1) and due to this homogeneous mixing of aluminum and silicon, the differing electric conductivities of the original structural constituents (.alpha.-mixed crystal, eutectic) are replaced by a uniform electric conductivity so that uniform oxide layers can grow during the anodizing process.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: March 21, 2000
    Assignee: LuK GmbH & Co.
    Inventors: Stefan Birkner, Ernst Strian, Markus Kreibiehl
  • Patent number: 5957251
    Abstract: A braking component such as a brake pad, brake rotor, brake drum or clutch disk is comprised of a metal substrate having a friction material laminated on at least a portion of at least one face of the metal substrate, the friction material being a ceramic-metal composite comprised of a metal phase and a ceramic phase dispersed within each other, wherein the ceramic phase is present in an amount of at least about 20% by volume of the ceramic-metal composite. In particular, the braking component is a metal substrate, such as aluminum, having laminated thereto a ceramic-metal composite of a dense boron carbide-aluminum composite having high specific heat and low density.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: September 28, 1999
    Assignee: The Dow Chemical Company
    Inventors: Bart R. Jones, Arthur R. Prunier, Jr., Aleksander J. Pyzik
  • Patent number: 5732806
    Abstract: The present invention provides a surgical instrument which prevents backlash due to reduction of applied force on the handle or trigger of the surgical instrument. The instrument includes a clutch system that is adapted to maintain the position of the portion of the driver that is in mechanical communication with the forming tool upon reduction of the applied force.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: March 31, 1998
    Assignee: Pilling Weck, Incorporated
    Inventors: David L. Foshee, Stephen J. Dawes, Jan Steuperaert
  • Patent number: 4840743
    Abstract: An organopolysiloxane composition comprising (1) a polydiorganosiloxane, (2) an organosiloxane having at least one silicon-bonded group selected from anilinophenoxy and naphthylaminophenoxy groups and (3) a siloxy metal compound wherein the metal is Ti, Zr or Hf, or a zirconium salt of a monocarboxylic acid.The compositions are stabilized against high temperature oxidative degeneration and are useful inter alia as viscous coupling fluids for automobile fan clutches.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: June 20, 1989
    Assignee: Dow Corning, Ltd.
    Inventor: William Gardiner
  • Patent number: 4796738
    Abstract: A mechanical clutch which is selectively engageable and disengageable. Interposed between an input member and an output member are a plurality of clutch rollers. In disengaged mode they rotate freely, relative to the members. In engaged mode they bunch together, thereby locking together and to the members, all of which then move together as a unit. A control member is applied to the clutch rollers to either engage or disengage the clutch. The movement of the members may be rotary or linear.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: January 10, 1989
    Assignee: J. C. Pemberton
    Inventor: Gregory M. East
  • Patent number: 4636679
    Abstract: The coupling of driving shaft with a driven shaft is accomplished at high torques and high speeds of rotation using a piezoelectric shack, a passive clutch system, and a hydraulic clutch activation system. The piezoelectric stack is housed in the rotating driving shaft, and extends along the axis of the shaft when it receives an engagement signal. This extension of the piezoelectric stack depresses a disk spring into the hydraulic cavity of the housing of the hydraulic clutch activation system. The pressure thereby generated in the hydraulic fluid compresses a compression ring onto a control disk and translates any rotation of the compression ring into the control disk. A torsion rod in the center axis of the control disk is rotated and, in turn, rotates a plug connected to a sprag clutch. This rotation serves to rotate the sprags into a locking position so that the sprag clutch engages the driving shaft with the driven shaft.
    Type: Grant
    Filed: January 15, 1986
    Date of Patent: January 13, 1987
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Bryan L. Glett, Mark A. Murphy
  • Patent number: 4390089
    Abstract: A torque converter including a distortable rotatable center disc disposed between a pair of freely rotatable plate members. Roller elements are disposed between the center disc and the plate members. The roller elements are radially movable under the influence of centrifugal force for variably distorting the center disc in a wave-like fashion between deactuated and actuated conditions to rotate the plate members at a speed relative to the center disc in proportion to the amount of the distortion of the center disc.
    Type: Grant
    Filed: March 5, 1981
    Date of Patent: June 28, 1983
    Inventor: Peirce E. Dalrymple
  • Patent number: 4044620
    Abstract: A variable speed ratio transmission wherein conventional pneumatic tires caused to orbit around an annular track to transmit motive forces from the input mechanism to the output mechanism. The tire planes are adjustable relative to the track plane to provide varying roll-skid engagement relationships, and different speed ratios.
    Type: Grant
    Filed: December 10, 1975
    Date of Patent: August 30, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Erwin F'Geppert