Patents Examined by Allen D. Herrmann
  • Patent number: 5099974
    Abstract: Magnetic flux produced by an electrically energized coil threads radially between a housing and a flange on a rotatable shaft, threads axially between the flange and a control collar for the clutch, threads radially between the control collar and an input hub via a helical spring contracted around the hub, and threads axially between a flange on the hub and the housing to complete the flux circuit. Flux cutting axially between the flange on the shaft and the control collar causes the control collar to shift axially into engagement with the flange so as to effect turning of the collar relative to the input hub and contraction of the spring around an output hub.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: March 31, 1992
    Assignee: Dana Corporation
    Inventor: John A. Spechko
  • Patent number: 4790202
    Abstract: An apparatus for driving a power seat in an automotive vehicle includes a worm threadedly engaged with a worm wheel accommodated in a housing and receiving driving power, a plug supporting one end of the worm, a screw threadedly engaged with the housing for supporting the plug in the housing bore, a damper provided in the bore so as to face one side of the plug, and a spacer offering little frictional resistance interposed between the damper and the one side of the plug. The plug is moved up and down relative to the housing by turning the screw, thereby aligning the central axes of the worm wheel and worm, the spacer reducing the frictional resistance working against the plug so that the latter is capable of being slid smoothly and with fine precision.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: December 13, 1988
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Masayuki Hayashi, Takumi Sasaki
  • Patent number: 4691594
    Abstract: A hydraulic control system for an automatic transmission which includes first and second throttle valves which produce respectively first and second throttle pressures related to the position of a throttle valve in an intake path of an engine. The first and second throttle pressures are different from each other. The first throttle pressure is used for controlling a line pressure and the second throttle pressure serves as a control pressure for shift valves.
    Type: Grant
    Filed: January 7, 1985
    Date of Patent: September 8, 1987
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yutaka Taga, Kunio Morisawa
  • Patent number: 4669325
    Abstract: A telescopic assembly includes a yoke supported for rotation on a stationary member, a shaft fitted in telescoping relation inside the yoke, rotatably supported by a movable bracket and capable of being reciprocated together with the movable bracket relative to the yoke, a screw rotatably retained by a stationary bracket, and a nut threadedly engaged with the screw and fixed to the movable bracket. When the screw is rotated, the nut provided on the movable bracket moves axially along the screw so that the movable bracket is moved toward or away from the stationary bracket. Hence, the shaft supported by the movable bracket is displaced axially forward or backward, depending upon the direction of screw rotation, relative to the yoke, thereby enabling the portion of the shaft projecting from the yoke to be adjusted in length.
    Type: Grant
    Filed: October 29, 1985
    Date of Patent: June 2, 1987
    Assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha
    Inventors: Masumi Nishikawa, Masanobu Ishikawa, Hiroshi Watanabe, Kenichi Kikuchi, Sumio Takizawa
  • Patent number: 4614257
    Abstract: Spring coupler apparatus including a driving member and a driven member coaxially mounted in a case, the driving member including a substantially circular annular body having a pair of fan-shaped flanges extending diametrically therefrom with upstanding portions at the end of the flanges forming recesses therebetween, and the driven member also including a pair of diametrically opposed fan-shaped flanges with projections extending upwardly from the ends thereof into the recesses. A relatively larger diameter spring is wrapped around the upstanding portions and projections and is in frictional engagement of the outer wall of the case in the free state of the spring, one tang end of the spring being engaged in a slit in one of the projections, and a tang on the free end of the spring being engageable with one of the upstanding portions of the driving member.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: September 30, 1986
    Assignee: Aisin Seiki Company, Ltd.
    Inventors: Kuniyoshi Harada, Yukifumi Yamada
  • Patent number: 4479399
    Abstract: Three clutch system for operating the composite transmission power train of a farm tractor, comprising first and second power shift clutches, and a master clutch connected by intervening gearing in separate paths to the different power shift clutches so as to be in series with either one. The power shift clutches are selectively connected by electrical hydraulic controlling means to a tractor engine at an engine connected end of a speed transmission in the power train; the master clutch is at the output end of the speed transmission, connecting it to a range transmission which completes the composite transmission power train hereof. A digital microcomputer chip is responsive to manually controlled engagement and disengagement of the master clutch and to other critical control parameters, and is programmed to monitor and control the three clutch controlling means.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: October 30, 1984
    Assignee: International Harvester Co.
    Inventors: Brian C. Narveson, Frank R. Bauer
  • Patent number: 4448094
    Abstract: The invention is apparatus for switching operating ranges for an air actuated governor for an engine for a vehicle. The governor establishes a maximum rpm for the engine when air under pressure is supplied to the governor and a lower maximum rpm for the engine when the supply of air to the governor is interrupted. The lower rpm range of the governor is engaged when the transmission of the vehicle is in a preselected gear.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: May 15, 1984
    Assignee: Dana Corporation
    Inventor: James A. Yarnell
  • Patent number: 4445393
    Abstract: A fluid actuated shift bar housing assembly for a change gear transmission wherein the shift bars are biased to an axially centered neutral position by constant fluid pressure in a constantly pressurized chamber and are selectively axially moved to an axially displaced gear engaged position by selective pressurization of a selectively pressurized chamber. A detent mechanism is provided for retaining the shift bars in the displaced positions thereof, said detent providing a resistance to axial movement of the shift bars having a smaller axial magnitude than the axial centering bias of the constant fluid pressure.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: May 1, 1984
    Assignee: Eaton Corporation
    Inventor: Eugene R. Braun
  • Patent number: 4445397
    Abstract: A pedal for a bicycle, which comprises a pedal shaft and a pedal body, the pedal body having a first foot bearing body which is formed in a frame-like shape and has a front foot bearing surface and a rear foot bearing surface, and a second foot bearing body having a middle foot bearing surface, the front foot bearing surface being formed in an arch matching with the toe arrangement at a cyclist's foot, and the middle foot bearing surface being formed in an arch matching with the line of all balls at his foot from the root of the big toe to the root of the little toe.
    Type: Grant
    Filed: August 17, 1981
    Date of Patent: May 1, 1984
    Assignee: Shimano Industrial Company Limited
    Inventor: Keizo Shimano
  • Patent number: 4158969
    Abstract: A shifting mechanism for a motor vehicle transmission comprises first and second stationary pivots transversely spaced apart. A range shifting fork is pivotally movable about said first pivot to a plurality of range control positions, which include a slow range position, a fast range position, and a no-load position. An axle shifting fork is pivotally movable about said second pivot to a plurality of clutch control positions, which include a clutch-engaging position and a clutch-disengaging position. A bridge extends transversely to the shifting paths and has one end portion connected to the range shifting fork and a second end portion connected to the axle shifting fork. A first pivotal joint is spaced from said first pivot and pivotally connects said first end portion of said bridge to said range shifting fork. A second pivotal joint is spaced from said second pivot and pivotally connects said second end portion of said bridge to said clutch control fork.
    Type: Grant
    Filed: October 7, 1977
    Date of Patent: June 26, 1979
    Assignee: Steyr-Daimler-Puch Aktiengesellschaft
    Inventor: Emerich Tuksa
  • Patent number: 4028959
    Abstract: Gear changing mechanism comprises spaced-apart camming plates and three gear changing levers mounted on a common axis which extends between the camming plates. The levers have control arm portions which have slots to receive a camming pin by means of which the levers are selectively oscillated with respect to the common axis. Camming means on the camming plates controls the movement of the camming pin to determine which lever will be oscillated by the camming pin. The camming pin, in turn, is controlled by a gear shift lever to which the camming pin is linked.
    Type: Grant
    Filed: June 25, 1976
    Date of Patent: June 14, 1977
    Inventor: Leonard Clarence Long
  • Patent number: 4028958
    Abstract: A single lever control adapted to actuate spaced control devices such as hydraulic valves is provided wherein a housing mountable on the body of one device and containing the actuator for that device supports both the actuating mechanism for an adjacent control device and the single control lever to actuate both devices. The mechanism has a yoke carried by a hub rotatable on the housing through which actuation of the first device is effected with the yoke pivotally supporting a single control lever which carries an extension connected through an easy assembly linkage to actuate the other control device.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: June 14, 1977
    Assignee: The Charles Machine Works, Inc.
    Inventors: Kenneth W. Schuermann, Vernon C. Slaton, III