Patents Examined by Allan D. Herrmann
  • Patent number: 6334370
    Abstract: A ball rolling groove 1c is defined in an inner peripheral surface of A ball screwed nut 1 by a rolling process, not by a grinding process so that a ball screwed nut having small diameters or large leads can be manufactured. The surface of the ball rolling groove 1c is finished to be sharp without concave and convex by a plastic working by the rolling process, so that the surface is less rough. By rolling the surface by the rolling process excellent in durability, the precision of R shape of the ball rolling groove 1c can be made excellent.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: January 1, 2002
    Assignee: THK Co., Ltd.
    Inventors: Katsuhiro Sonoda, Takeki Shirai, Shigeru Yamanaka
  • Patent number: 6332857
    Abstract: In a state where an input shaft 15a, an input side disk 2A and a loading cam device 9 are assembled together, thrust to be generated by the loading cam device 9 is measured. In case where this thrust is within a specified range, the other component parts of a toroidal-type continuously variable transmission are combined with the above assembled parts to thereby produce the toroidal-type continuously variable transmission. Accordingly it is possible to reduce the manufacturing cost of a toroidal-type continuously variable transmission which is excellent in efficiency and durability.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: December 25, 2001
    Assignee: NSK Ltd.
    Inventors: Kouji Ishikawa, Kiyotaka Hirata, Mitsuo Kumagae
  • Patent number: 6332858
    Abstract: A power roller (18C, 18D, 20C, 20D) of a toroidal continuously variable transmission is supported by a pedestal (94) such that it is free to rotate. A first roller bearing (96A) supporting the pedestal (94) in the trunnion (17) against a horizontal load which makes a right angle with an input shaft (16) of the transmission, and a second roller bearing (96B, 96C) supporting the pedestal (94) in the trunnion (17) against a vertical load which makes a right angle with the input shaft (16) of the transmission, are provided between the trunnion (17) and the pedestal (94). These roller bearings (96A), (96B), (96C) permit the pedestal (94) to easily displace parallel to the input shaft (16).
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: December 25, 2001
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Haruhito Mori, Jun Sugihara, Haruyoshi Kumura, Toshikazu Oshidari, Jun Watanabe
  • Patent number: 6330837
    Abstract: A parallel mechanism is capable of positioning and orienting an end platform with up to six or more degrees of freedom. In preferred embodiments, the mechanism includes six links having a first and second ends. The first end is connected to an end platform for supporting a tool, while the second end is connected to an actuator capable of translating the second end. A rotational drive mechanism may be provided for rotating an object mounted on the end platform at varying orientations of the end platform independently of movement of the end platform as a whole. The links may be curved in order to avoid interference between adjoining links, thereby permitting an increased range of motion and improved dexterity of the mechanism.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: December 18, 2001
    Assignee: MicroDexterity Systems, Inc.
    Inventors: Steve T. Charles, Robert S. Stoughton
  • Patent number: 6330836
    Abstract: A steel for a gear which is formed on a drive plate gear includes; C: 0.32 to 0.38%, Si: 0.1% or less, Mn: 0.60 to 0.90%, P: 0.03% or less, and S: 0.035% or less.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: December 18, 2001
    Assignee: Fujikiko Kabushiki Kaisha
    Inventors: Hiroshi Watanabe, Masakiyo Ohya, Masato Shibata
  • Patent number: 6327929
    Abstract: The two dimensional drive system is capable of properly supporting a load applied to a slider and improving the positioning accuracy, the resolution, etc. The drive system comprises: a base; a pair of first fixed guides; a pair of second fixed guides; a first moving beam being capable of moving in the first direction; a second moving beam being capable of moving in the second direction; a slider being capable of moving along the first moving beam and the second moving beam; a first ball screw for moving the slider in the first direction; a second ball screw for moving the slider in second direction; first driving means for driving the first ball screw; second driving means for driving the second ball screw; and a third fixed guide being fixed between the first fixed guides and slidably connected to the first moving beam, whereby the third fixed guide guides the first moving beam in the first direction.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: December 11, 2001
    Inventor: Ken Yanagisawa
  • Patent number: 6327926
    Abstract: The invention relates to a directional clutch with a drive element (10-120) and an output element (11;101, 102;130, 131) between which clamping elements (13, 14, 110) are arranged. Said clamping elements are connected to the output element in such a way that they turn without moving in relation to the direction of rotation of the output element both in a free-running position and in a torque transmitting position. The clamping elements are moved in a ring-shaped guide element (12) of the driving element in the free-running position and are blocked in said guide element (12) in the torque transmitting position. According to the invention, the output element consists of radial guides or borings (17;103, 104) each containing a projecting clamping body pin (15,16;111). In the first-mentioned case, the output element can be adjusted in an off-center position relative to the driving element.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: December 11, 2001
    Assignee: Satellite Gear Systems Ltd.
    Inventor: John Alfred Chilman
  • Patent number: 6327931
    Abstract: Apparatus is disclosed for controlling the operational states of a motor vehicle comprising a maneuvering console including a maneuvering lever, a pivot hinge for the maneuvering lever so that the maneuvering lever can be actuated into a number of positions corresponding to the operational states of the motor vehicle, the pivot hinge being mounted to permit pivoting of the maneuvering lever with respect to the maneuvering console about an unlimited number of spatial pivot axes, a plurality of hydraulic pistons and cylinders mechanically coupled to the maneuvering lever for selectively limiting the pivoting movement of the maneuvering lever, a plurality of sensors for detecting a maneuvering force applied to the maneuvering lever and the position of the maneuvering lever so that the pivoting movement of the maneuvering lever can be selectively limited by the plurality of hydraulic pistons and cylinders based upon those detections, and a controller for controlling the plurality of hydraulic pistons and cylinder
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: December 11, 2001
    Assignee: Kongsberg Automotive AB
    Inventor: Kenneth Skogward
  • Patent number: 6327934
    Abstract: A front-axle output of an automatic transmission having situated in a sealed housing (15) a front-axle spur pinion (1) which is operatively connected via an intermediate gear (4) with a driving gear. The output spur gear (1) is also connected for transmitting a torque to a differential (5) with a co-axially positioned pinion shaft (3A) which has one pinion engaged with the differential (5). The output spur gear (1) is designed as one piece with a side shaft (2) which is connected with the pinion shaft (3A) in an area of low bending stress between a support (10) of the pinion (3) and the pinion shaft (3A) and an output spur gear support (8).
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: December 11, 2001
    Assignee: ZF Friedrichshafen AG
    Inventor: Lothar Barthel
  • Patent number: 6324935
    Abstract: A vehicle steering assembly includes a mounting bracket for the steering column, such that during a crash situation friction surfaces on the steering column slides through an opening in a plastic block carried by the mounting bracket. The friction surfaces have an interference fit with the opening in the plastic block, so that during normal operation of the vehicle the steering column is effectively locked to the mounting bracket.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: December 4, 2001
    Assignee: DaimlerChrysler Corporation
    Inventors: Robert M. Schoen, Paul Thompson
  • Patent number: 6324932
    Abstract: A low friction shifter unit for automatic transmissions comprising a minimized number of readily assembled parts that features a roller bearing and spacer unit that is operatively positioned between a fixed gate plate and the tapered hub of a rotatable shifter member to support the rotatable shifter member for limited rotation in response to the manual operation of an associated transmission shift lever. The gate plate and shift cam are operatively held together by a single threaded fastener advanced along the rotational axis of the rotatable shifter member to a positive stop position established by the roller bearing unit so that manufacturing tolerance stack up is minimized enhancing quantity production of such shifter units.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: December 4, 2001
    Assignee: DaimlerChrysler Corporation
    Inventors: Christopher M Slon, Daniel B Sauger
  • Patent number: 6321616
    Abstract: A gear catching for a shift transmission in a motor vehicle including a rotatably mounted shift lever and bearing. The catching includes a substantially spherical body having at least one cam at the shift lever or a bearing shell enclosing it. The cam catches in a catch cam. The catch cam or cam is constructed in a springing manner and, due to catching, gives the driver a clear sense of shifting.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: November 27, 2001
    Assignee: United Parts FHS Automobil Systeme GmbH
    Inventors: Jürgen Hohmeier, Arnd Bürger, Grant A. Webb
  • Patent number: 6321614
    Abstract: A screw drive (10a) with rolling elements, optionally a ball screw drive, includes a screw spindle with a spindle axis (S) and a double nut (14a) running on the screw spindle, with two separately formed single nuts (16a , 18a) which are substantially rigidly joined in the direction of the axis (S) of the spindle. In order to set a desired play or bias relative to the screw spindle, the two single nuts (16a, 18a) can be turned continuously about the axis (S) of the spindle relative to each other and fixed in any relative rotary position corresponding to the desired play or bias. According to the invention, a first of the two single nuts or an intermediate element (28a) joined thereto and arranged between the two single nuts, as a first alternative, is welded to one of the two single nuts or to at least one part (42a) joined thereto or, as a second alternative, has at least one peripheral section pressed into an associated aperture in one of the single nuts.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: November 27, 2001
    Assignee: Rexroth Star GmbH
    Inventors: Werner Blaurock, Roland Greubel, Hugo Och, Peter Blattner
  • Patent number: 6318196
    Abstract: The present invention relates to an improved structure of an automobile center lock driving apparatus, and in particular to an center lock driving apparatus having an inertia gear module. The driving apparatus comprises a driving pull-rod, a transmission gear, an inertia clutching gear, an active gear and a motor. The apparatus provides a solution to wear of the gears, dislocation of the gears, and “dead lock” of the driving pull-rod, and gear damages as a result of shock caused by dislocation of transmission gear modules. At instantaneous driving, the driving pull-rod can be driven more smoothly and stable as a result of the inertia gap between the gear modules.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: November 20, 2001
    Inventor: Chung-I Chang
  • Patent number: 6318209
    Abstract: A neutral shift lever position control device for an automotive vehicle includes a swing block pivotally connected to a vehicle body by a rod, a shift lever at one end thereof pivotally connected to the pivot shaft, a neutral position selector which is cylindrical such that the shift lever is inserted therethrough, and a knob screwed onto a free end of the shift lever.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: November 20, 2001
    Assignee: Hyundai Motor Company
    Inventor: Young-Hee Park
  • Patent number: 6314831
    Abstract: Various adjustable pedal assemblies (10, 110 and 210) include a pedal support (16, 116 or 216) slidably supported on a guide rod (12) with a pedal lever (18, 118 or 218) mounted on the support (16, 116 or 216) along the guide rod (12). The adjustable pedal assemblies (10, 110 and 210) are characterized by the screw (22) being external to and parallel to the guide rod (12). In the embodiment of FIGS. 1 and 2, the pedal lever (18 or 118) is pivotally attached to the support (16 or 116) whereas in the embodiment of FIG. 3, the pedal lever (218) and the support (216) are defined by an integral member and the bracket (214) includes a connection (34) for rotatably supporting the bracket (214) on a vehicle.
    Type: Grant
    Filed: August 24, 1999
    Date of Patent: November 13, 2001
    Assignee: Teleflex Incorporated
    Inventors: Christopher J. Rixon, Christopher Bortolon
  • Patent number: 6308814
    Abstract: A parking lock mechanism for a gate type automatic transmission shift control device is provided. In the mechanism, a pair of upper and lower projections are formed the inner surface of a side wall of a housing at a location adjacent a portion of a gate opening corresponding to a parking position of a shift lever. A radial projection is formed on the shift lever in such a manner as to be capable of passing through an interval between the upper and lower projections on the side wall. A lock lever is swingably mounted on the inner surface of the side wall so as to be capable of abutting upon the projections on the side wall when the shift lever is in the parking position, for thereby preventing further movement of the shift lever.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: October 30, 2001
    Assignee: Fuji Kiko Co., Ltd.
    Inventor: Yasuyuki Ikegami
  • Patent number: 6308586
    Abstract: The invention relates to a gear transmission with a steplessly adjustable translation ratio for converting of rotary speeds and of torques of shafts. The uniform rotary motion of a drive shaft is transferred to a driven shaft with the aid of time staggered operating gear transmission units. The rotary motion is transformed by a cam transmission initially into a uniform translational motion and in the following this uniform translational motion is transformed into another, also uniform translational motion, with a speed depending on the translation ratio setting with a translation device. Finally this translational motion is transferred again into a uniform rotary motion by a further planar cam transmission and transferred to the driven shaft.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: October 30, 2001
    Inventor: Matthias Berger
  • Patent number: 6308588
    Abstract: A drive (1) for driving, or drives in, agricultural implements, has a drive housing (2) with a first shaft (7) which is rotatably supported around a first axis of rotation (4) in the drive housing (2). A first shaft end (10) of the first shaft (7) projects from the drive housing (2). A first gear (13) is arranged on the first shaft (7). The first gear (13) is axially fixed and rotatable, to a limited extent, relative to the first shaft (7). A second shaft (24) is rotatably supported around a second axis of rotation (20) in the drive housing (2). A first shaft end (27) of the second shaft (24) projects from the drive housing (2). A second gear (29) is firmly connected to the second shaft (24) in the axial direction and in the direction of rotation. The first gear (13) and the second gear (29) engage one another. The selected assembly enables a limited amount of rotation of the first shaft (7), with the second shaft (24) being stationary.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: October 30, 2001
    Assignee: GKN Walterscheid GmbH
    Inventor: John Zubik
  • Patent number: 6306060
    Abstract: A roller control unit for a CVT includes a cylinder (54) having a piston (70) positioned therein and operably connected to a roller assembly of said CVT thereby to control its position. The unit includes a lubrication supply which comprises a chamber (94) between the cylinder (54) and piston (70) and one or more radially extending passageways (102) through said piston (70). These passageways are in flow communication with the roller and act to direct cooling fluid to said roller. Radial supply of said lubrication facilitates a reduction in flow losses within the supply.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: October 23, 2001
    Assignee: Torotrak (Development) Limited
    Inventors: Brian Joseph Dutson, Andrew Damian De Freitas