Multilated Or Noncircular Gear In Drive Train Patents (Class 475/17)
  • Patent number: 10627805
    Abstract: The present disclosure relates to servo control technology, which provides a method, device, and terminal device for servo movement smoothing. The method includes: obtaining a starting position and a control command for a rotation of an output shaft the servo; determining an ending position and a rotation time for the rotation of the output shaft in accordance with the control command; constructing a movement curve of the output shaft based on the starting position, the ending position, and the rotation time; and controlling the output shaft to rotate from the starting position to the ending position in accordance with the movement curve. The above-mentioned method smooths the movement of the servo by constructing a simple linear function, which greatly reduces the calculation amount in comparison with the technical solution using the cubic Bessel formula, and is capable of reducing the requirements for the hardware performance of servos.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: April 21, 2020
    Assignee: UBTECH ROBOTICS CORP
    Inventors: Youjun Xiong, Lifu Zhang, Dong Liu, Hanyu Sun
  • Patent number: 9856963
    Abstract: A driving force transmission mechanism is equipped with a first gear attached to a drive source, a second gear enmeshed with the first gear, and a damper shaft enmeshed mutually with the second gear and with a rack member of an air mixing damper. A first locator part formed on the second gear is inserted in a first locator groove in the first gear, while additionally, a second locator part is inserted with respect to a second locator groove in a damper gear. Further, a first narrow tooth formed on the first gear enmeshes with a meshing groove of the first locator part, whereas a second narrow tooth formed on the damper gear enmeshes with another meshing groove of the second locator part.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: January 2, 2018
    Assignee: Keihin Corporation
    Inventor: Shintaro Ikeda
  • Patent number: 8814745
    Abstract: The brake system includes a sun gear fixedly mounted to an input shaft. The sun gear is mounted inside a planetary chassis between two pinion gears. The sun gear has teeth protruding from its circumference on both sides thereof. The teeth are aligned in such a way that when the sun gear is turned to a neutral position, the teeth are engaged with the pinion gears, preventing a rotation of the pinion gears, and when the sun gear is rotated away from the neutral position, the teeth are disengaged from the pinion gears allowing the pinion gears to rotate. When no torque is applied to the input shaft, the sun gear is urged back to its neutral position. In a second embodiment, the sun gear is urged in a drag mode against the trailing side of the teeth on the pinion gears, for producing a pawl-and-latch noise during use.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: August 26, 2014
    Inventor: Brian Lundrigan
  • Patent number: 8043193
    Abstract: A gear mechanism for the drive assembly of a heald shaft (1), wherein the gear mechanism (6, 6a, 6b, 6c) comprises an input shaft (7, 7b, 7c) and an output shaft (5, 5b, 5c). The gear mechanism (6, 6a, 6b, 6c) generates a differential angle of rotation between the input shaft (7, 7b, 7c) and the output shaft (5, 5b, 5c) that is superimposed on the angle of rotation and, in dependence on the angle of rotation, is subjected to an oscillating change. This oscillating change can differ from a harmonic oscillation as a result of the non-circular design of the planet gears (11a, 12a, 13a) of the gear mechanism (6, 6b, 6c), thereby making it possible to realize almost any optional movements for the heald shaft (1), with low strain on the gears and the bearings. A simple production method and a compact design are disclosed.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: October 25, 2011
    Assignee: Groz-Beckert KG
    Inventor: Gerhard Pohl
  • Patent number: 7429231
    Abstract: A rotary drive for a belt tensioner includes a housing, a pinion rotatably mounted therein, and at least one driving gear coupled to the pinion, the driving gear being mounted in the housing and being adapted to be driven by pressurized gas introduced into a pressure chamber. Formed in the driving gear is a cavity having a substantially radially extending wall which, in the installed state, is opposite to a protrusion which projects into the cavity and is rigidly connected to the housing, the wall of the cavity and the protrusion forming part of a wall of the pressure chamber.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: September 30, 2008
    Assignee: TRW Automotive GmbH
    Inventors: Wilfried Bieg, Thomas Moedinger, Gerhard Malbrich
  • Publication number: 20080125266
    Abstract: The present invention relates to a gear mechanism for the drive assembly of a heald shaft (1), wherein the gear mechanism (6, 6a, 6b, 6c) comprises an input shaft (7, 7b, 7c) and an output shaft (5, 5b, 5c). The gear mechanism (6, 6a, 6b, 6c) generates a differential angle of rotation between the input shaft (7, 7b, 7c) and the output shaft (5, 5b, 5c) that is superimposed on the angle of rotation and, in dependence on the angle of rotation, is subjected to an oscillating change. This oscillating change can differ from a harmonic oscillation as a result of the non-circular design of the planet gears (11a, 12a, 13a) of the gear mechanism (6, 6b, 6c), thereby making it possible to realize almost any optional movements for the heald shaft (1), with low strain on the gears and the bearings. The invention furthermore discloses a simple production method and a compact design.
    Type: Application
    Filed: November 26, 2007
    Publication date: May 29, 2008
    Applicant: GROZ- BECKERT KG
    Inventor: Gerhard Pohl
  • Patent number: 7273433
    Abstract: A constant mesh gear driven continuously variable transmission including a minimum of two cones in mesh with either an axial sliding ring gear or an axial sliding circular gear. The cones and ring gear or circular gear are enclosed in a housing. An input shaft is journaled in the housing. The cones rotate about their own axes and revolve about the shaft in some embodiments. The ring gear or axial sliding circular gear is slidable axially relative to the cone gear, and the output gear ratio is varied by the axial position on the ring gear or sliding circular gear.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: September 25, 2007
    Inventor: Thomas F. Troester
  • Publication number: 20040072645
    Abstract: A power transmission apparatus (10) including a base (13) with a driven shaft (11) rotably supported by the base (11) is disclosed. The apparatus (10) further includes an internal gear (17) surrounding the shaft (11) and fixed to the base (13), an arm (14) fixed to the shaft (11) and extending generally radially therefrom, a planetary gear (16) rotably attached to the arm (14) and meshingly engaged with the internal gear (17) so that rotation of said planetary gear (16) causes rotation of the shaft (11), and a connecting rod (19) rotably attached to an extension (20) fixed to the planetary gear (16) so that a means driving the connecting rod (19) causes rotation of the planetary gear (16), the connecting rod (19) being attached to the planetary gear (19) at a predetermined location from the planetary gear (16) by the length of the extension (20) and the connecting rod (19) angularly oscillating across a transverse axis of the shaft (11).
    Type: Application
    Filed: November 28, 2003
    Publication date: April 15, 2004
    Inventor: Peter Bortolin
  • Patent number: 5221237
    Abstract: A cylindrical member driven by a planetary gear arrangement traverses an epitrochoid path to periodically enter a radial slot in an arm or disc rotating the arm or disc through 180.degree.. By selecting the parameters appropriately the cylindrical member is caused to enter and leave the radial slot along a tangential path such that no first or second derivative discontinuities are present in the motion of the arm or disc. Several embodiments are disclosed for achieving either one or two incremental rotations of an output shaft for a single revolution of an input shaft with various speed reducing gear trains.
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: June 22, 1993
    Inventor: Theodore Weber
  • Patent number: 5201690
    Abstract: A gear system for mechanically transforming motion on an infinitely variable basis as desired, having a unique arrangement of gear elements and clutches between the input and output shafts (1 and 6). A first set of gears (2) divides the motion put into the system through the input shaft (1). A controller (7) sets the phase shift in the division of motion from the first set of gears (2). Sets of non-circular gears (3) connecting the intermediate shafts (9) to "on/off" clutches (4) transform the motion output from the first set of gears (2). Finally, the resulting motion from the clutches is transferred to an output shaft (6) through a third set of gears in a summing device (5). Shaft (6) is connected to a load (not shown).
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: April 13, 1993
    Inventors: David B. Dooner, Ali A. Seireg
  • Patent number: 5080636
    Abstract: A cylindrical member driven by a planetary gear arrangement traverses an epitrochoid path to periodically enter a radial slot in an arm or disc rotating the arm of disc through 180.degree.. By selecting the parameters appropriately the cylindrical member is caused to enter and leave the radial slot along a tangential path such that no first or second derivative discontinuities are present in the motion of the arm or disc. Several embodiments are disclosed for achieving either one or two incremental rotations of an output shaft for a single revolution of an input shaft.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: January 14, 1992
    Inventor: Theodore Weber
  • Patent number: 4969860
    Abstract: An stepless transmission mechanism comprises an input shaft rotatably supported by a case, an input frame secured to the input shaft so as to be rotated, an input planet shaft rotatably supported by the input frame, an output shaft rotatably supported by the case and extending coaxially to the input shaft, an output frame rotatably supported by the input shaft and swinging relative to the input frame, an output planet shaft rotatably supported by the output frame, an input rotation transmitting means for transmitting the rotation of the input shaft to the input planet shaft, an output rotation transmitting means for transmitting the rotation of the output planet shaft to the output shaft, a structural body which is composed of a plurality of constituent mechanisms which perform rotation speed modulation in the manner of an exponential function by pairs of non-circular gears inherently having a rotation speed ratio which periodically changes in the manner of an exponential function, so that the body performs s
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: November 13, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akira Takami, Toshiyuki Takahara
  • Patent number: 4944718
    Abstract: A angular velocity modulating device comprises: a primary angular velocity modulating means including a first non-circular gear which is an internal gear rotatably supported and a second non-circular gear which is an external gear mounted on a second rotary shaft and engaged with the first non-circular gear; a secondary angular velocity modulating means including the first non-circular internal gear and a third non-circular gear which is an external gear mounted on a third rotary shaft and engaged with the first non-circular gear; a first frame rotatably supporting the first non-circular gear and the second rotary shaft; and a second frame rotatably supporting the third rotary shaft, the ratio in angular velocity of the third rotary shaft to the second rotary shaft being the quotient of the secondary angular velocity ratio of the first and second non-circular gears divided by the primary angular velocity ratio of the first and third non-circular gears, whereby the device can be small in size in a radial direc
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: July 31, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshiyuki Takahara, Akira Takami
  • Patent number: 4912993
    Abstract: A starter includes a speed changing mechanism for transmitting rotational force of an electric motor to a pinion gear capable of being brought into or out of engagement with a ring gear of an engine. The speed changing mechanism includes a geared stepless speed changer. A speed reduction ratio is controlled responsive to a load change by means of an input shaft, an output shaft, and input and output frames rotatable relative to each other about the input shaft. A ratio of angular velocities of the input and output shafts is related to an angle of rotation between the input and output frames.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: April 3, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Keiichi Konishi, Akira Takami