Toothed Gear And Recirculated Unconnected Elements Patents (Class 74/216.3)
  • Patent number: 10830321
    Abstract: The present disclosure provides an actuator assembly having a ball nut comprising a helical track and a ball screw. The ball screw of the actuator assembly includes a first translation bearing track having a first diameter, wherein the helical track and the first translation bearing track form a first translation bearing raceway in which a first translation bearing ball is disposed. The ball screw further includes a second translation bearing track having a second diameter, wherein the helical track and the second translation bearing track form a second translation bearing raceway in which a second translation bearing ball is disposed. The first diameter and the second diameter are not equal.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: November 10, 2020
    Assignee: GOODRICH CORPORATION
    Inventors: David Drennen, Harald Klode, Kevin Rehfus, Satinder Mann, Marc Georgin, Robert French
  • Patent number: 10295038
    Abstract: A push-type transmission mechanism has a base, a plurality of fixing discs securely mounted on the base, and a driving component rotatably mounted on the base. The driving component includes a plurality of cam portions. Each fixing disc has a plurality of driven rolling components which can move in radial directions of the fixing discs and can protrude out of outer surfaces by abutment of the cam portions. An inner surface of a transmission block forms a corrugation structure extending continuously in a circumferential direction. The corrugation structure is abutted by the driven rolling components. Thus, speed is changed through the driven rolling component connecting to the corrugation structure. Besides, with the driven rolling components driven by the cam portions, power can be transmitted with high torque.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: May 21, 2019
    Assignee: MIHUMIS TECHNOLOGY CO., LTD.
    Inventor: Chun-Tang Hsu
  • Patent number: 10220874
    Abstract: The present disclosure relates to a rack assist type power steering apparatus that includes: a ball nut that is rotated by the rotating force transmitted from a motor and has an internal screw groove formed in the inner circumferential surface thereof; and a rack bar that has an external-screw-groove-formed part that has an external screw groove formed in the outer circumferential surface thereof, and is coupled with the ball nut by a ball, wherein the external screw groove has a first curved portion and a second curved portion connected to each other, and is formed such that a contact angle formed by a line that is normal to a tangent line at a point where the ball makes contact with the first curved portion and a line that is normal to a tangent line at a point where the ball makes contact with the second curved portion gradually decreases from the central portion toward opposite end portions of the external-screw-groove-formed part, thereby reducing friction generated when the ball performs a rolling motio
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: March 5, 2019
    Assignee: MANDO CORPORATION
    Inventor: Jae Hoon Bae
  • Patent number: 9127749
    Abstract: A transmission comprising a plurality of concentric tori, each tori having means for engaging with an adjacent tori, the engaging means being actuated by the pressure of a pressurised fluid to thereby increase or decrease a gearing of gears attached to the transmission. A method of gearing is also provided.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: September 8, 2015
    Inventor: Khalil Abu Al Rubb
  • Publication number: 20120085187
    Abstract: A steering shaft coupling device and method providing a gearless, offset steering arrangement. The device includes a housing having an first section and a second section forming a compartment having two adjacent openings therein, a first and a second CV joint, each CV joint seated within each one of the openings of the housing compartment, and a linkage joining the first and second joints. The CV joints may also function as slip joints.
    Type: Application
    Filed: October 12, 2010
    Publication date: April 12, 2012
    Applicant: International Truck Intellectual Property Company, LLC
    Inventor: Stephen F. Burns
  • Patent number: 7682045
    Abstract: A linear actuator (1) comprising a housing (6), a motor (2) comprising a stator with coils (4), a screw-nut system, and a rotor (5) axially and radially supported on the motor side by a bearing (11). The bearing comprises a ball (14) rigidly attached to the rotor, a cylindrical cavity (15) formed or positioned in the housing into which the ball (14) is inserted. A stop (17) is positioned in the cavity, supported in an axial direction of the rotor, against the ball (14) in essentially one point.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: March 23, 2010
    Assignee: Societe Industrielle de Sonceboz S.A.
    Inventor: Jean-Francois Pfister
  • Publication number: 20090283371
    Abstract: A combined vehicle brake including a hydraulically actuated service brake and an electromechanically actuated parking brake device, a hydraulic operating pressure chamber in a brake housing being defined by a brake piston, which for performing service braking actions can be acted upon by hydraulic pressure fluid, so that the brake piston can be actuated along a piston longitudinal axis in order to produce a braking action, and the parking brake device acting on the brake piston by way of a transmission that translates the rotary motion of an electromechanical actuator into a translational motion and actuates the brake piston to perform parking brake actions and to keep it in the actuated position. Also disclosed is a transmission for translating a rotary motion into a translational motion by way of a screw spindle and a spindle nut, which are in contact with one another by way of multiple rolling elements.
    Type: Application
    Filed: September 26, 2007
    Publication date: November 19, 2009
    Applicant: Continental Teves AG & Co., oHG
    Inventors: Thomas Winkler, Jürgen Balz, Dirk Koch, Marcus Schumann, Anja Klimt, Jürgen Bauer, Torsten Hintz
  • Publication number: 20090193916
    Abstract: The outer diameter of a spline nut and the inner diameter of a nut body holding portion of a housing gradually decrease in the downward direction. A ball screw protection unit includes a nut body taper face that is formed in the outer peripheral face of the spline nut, a holding portion taper face that is formed in the nut body holding portion, and a disc spring that is provided at the upper end of the spline nut and that biases the spline nut in such a direction that a friction force between the nut body taper face and the holding portion taper face increases (downward direction).
    Type: Application
    Filed: January 14, 2009
    Publication date: August 6, 2009
    Applicant: JTEKT Corporation
    Inventors: Hajime Watanabe, Satoshi Kondo, Yasuhiro Ohta
  • Patent number: 7428857
    Abstract: A gear composed of a polymer blend or a copolymer of PA66 and PA6 which contains a part having a PA66 molecular structure and a part having a PA6 molecular structure in a weight ratio of PA66/PA6=99.9/0.1 to 95.0/5.0 is excellent in durability as well as heat resistance and dimensional stability. A speed reduction gear using the gear has a reduced size, and can be used under a higher torque without a torque increase due to dimensional change of the gear. An electric power steering apparatus using the speed reduction gear has a reduced size, and can be used for a larger automobile.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: September 30, 2008
    Assignee: Jtekt Corporation
    Inventor: Takanori Kurokawa
  • Patent number: 7300234
    Abstract: A power transmission is provided. The power transmission includes a housing including a continuous channel following a three-dimensional path. A plurality of beads is located within the continuous channel and movable therein. A first sprocket is rotateably connected to the housing and forms a first portion of the continuous channel in movable contact with the plurality of beads. A second sprocket is rotateably connected to the housing and forms a second portion of the continuous channel in movable contact with the plurality of beads, the second sprocket having an axis of rotation angled with respect to an axis of rotation of the first sprocket. A milling tool and a method of removing material from a work piece are also provided.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: November 27, 2007
    Assignee: Copeasetic Engineering, Inc.
    Inventor: Larry Cope
  • Patent number: 6314826
    Abstract: Robust nested speed converter and bearing apparatus providing speed conversion function and bearing support function in a compact package for a range of applications.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: November 13, 2001
    Assignee: Synkinetics, Inc.
    Inventors: Michael P. Cunningham, Frank A. Folino, Faruk H. Bursal
  • Patent number: 6193624
    Abstract: A torque transfer device allows torque to be input at one point of the device and transferred to another point of the device, at which the power or torque is taken from the device. The device incorporates a continuous direct drive comprised of a plurality of individual, and unconnected, pins which advance each other to provide the drive. The pins have enlarged ends and reduced centers. The centers of the pins ride on a centrally disposed shedder which acts as a guide rail. The direct drive communicates with the drive sprockets, traveling through the drive sprockets to rotate the drive sprockets to transfer torque.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: February 27, 2001
    Assignee: Victory in Jesus Ministries, Inc.
    Inventor: David R. Lund