Worm Patents (Class 74/425)
  • Patent number: 10352399
    Abstract: An actuator assembly having an actuator, a worm gear, a first gear unit, a second gear unit, and a biasing member. The actuator may rotate the worm gear, first gear unit, and second gear unit in first rotational directions while the biasing member may rotate the worm gear, first gear unit, and second gear unit in second rotational directions.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: July 16, 2019
    Assignee: Lear Corporation
    Inventors: Curtis Hudson, Mark R. Keyser, Andrzej Dlugokecki
  • Patent number: 10312773
    Abstract: Each cross-section of the connector member assembling hole and the assembly main body 51a in a direction intersecting the insertion direction has a point-symmetrical circular shape with the insertion shaft center FC as the center. A pair of connector-side female terminals 57a, opposed to each other with the insertion shaft center FC as the center, is provided at the distal end side in the insertion direction of the assembly main body 51a, and a pair of brush-side male terminals, opposed to each other with the insertion shaft center FC as the center and to which the connector-side female terminals 57a are connected, is provided to a portion of the brush holder opposite to the connector member assembling hole.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: June 4, 2019
    Assignee: Mitsuba Corporation
    Inventors: Hiroyuki Uchimura, Masashi Suto, Hiromitsu Takahashi, Takayuki Yokoyama
  • Patent number: 10174800
    Abstract: A force transmission device, tappet, and method of manufacture. The tappet may include a shaft portion for transmission of a thrust loading from an actuating member to a piston of a disc brake and a gear portion for transmission of rotary motion to the shaft. The gear portion may be formed as a separate piece from the shaft portion.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: January 8, 2019
    Assignee: Meritor Heavy Vehicle Braking Systems (UK) Limited
    Inventors: Refaat Malki, Martin Taylor
  • Patent number: 10088016
    Abstract: A winch-winding assembly for use with a flatbed winch, for example. The winch-winding assembly can be used for winding tie-down straps. The winch-winding assembly can include a gear system, a drive shaft connected to the gear system in order to cause rotation of the gear system and an engagement arm being configured to engage with and rotate part of the flatbed winch. A drill-support mechanism can be further provided to guide or support a body of a hand-held drill during engagement and rotation of the drive shaft. The engagement arm can comprise a stem and a finger mounted to the stem and being displaceable between a retracted position disengaging the flatbed winch, and an extended position engaging the flatbed winch, to rotate the winch drum in response to rotation of the stem.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: October 2, 2018
    Assignee: USINAGE NUMERIQUE H.B. INC.
    Inventors: Hermel Bujold, Jacques Fortin, Vincent Girard, Pierre Thériault, Michel Taillon
  • Patent number: 10066726
    Abstract: A worm wheel of a reduction gear for an electric power steering includes: a boss part including a hollow portion formed along an axial-direction center for coupling of a shaft and having first coupling surfaces, each of which is formed by a first convex surface and a first concave surface continuously repeated along an outer peripheral surface; and a tooth-shaped part having second coupling surfaces, each of which is formed by a second convex surface and a second concave surface continuously repeated along an inner peripheral surface, such that the second coupling surfaces are coupled corresponding to the first coupling surfaces, wherein a plurality of teeth are continuously formed along a periphery thereof with spacing portions interposed therebetween.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: September 4, 2018
    Assignee: MANDO CORPORATION
    Inventor: Hee Chul Ahn
  • Patent number: 10001194
    Abstract: A driving device for driving in rotation a toothed wheel, in particular a turntable, has a worm intended to mesh with the toothed wheel, a motor to drive the worm in rotation, a flexible sleeve that partially surrounds the worm in such a way as to form an assembly described as a worm/sleeve assembly, and a pre-stressing unit. The motor is arranged in a structure that is fitted pivotably relative to the worm/sleeve assembly, and the driving device also has a force transfer unit connecting the motor to the sleeve at a second extremity of the worm.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: June 19, 2018
    Assignee: Micro Controle-Spectra Physics
    Inventors: Eric Durand, Bruno Rety
  • Patent number: 9989090
    Abstract: A slewing bearing providing a first ring, a second ring, the rings being concentric around a central axis (X1), at least one row of rolling elements arranged between the rings in order to form an axial thrust that can transmit axial forces, at least one row of rolling elements arranged between the rings in order to form a radial thrust that can transmit radial forces, and at least one sealing assembly arranged between the first ring and the second ring. The sealing assembly provides first sealing means being arranged outside second sealing means, an annular sealed chamber being defined between the first sealing means and second sealing means.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: June 5, 2018
    Assignee: AKTIEBOLAGET SKF
    Inventors: Bruno Capoldi, Lionel Martin, Eric Robba
  • Patent number: 9976628
    Abstract: A positioning structure for a worm wheel which is configured to mesh with a worm spindle and contains: a body, a plurality of rolling assemblies, and at least one attaching material. The body includes plural accommodating grooves and plural recesses, wherein each recess forms on a bottom face of each accommodating groove and communicating with said each accommodating groove. Each rolling assembly includes a holder, a rolling ball, and a magnetic attracting element, wherein a width of the holder is less than a width of said each accommodating groove so as to form a gap between the holder and said each accommodating groove. Each attaching material is filled in the gap, and said each rolling assembly is adjustably moved to a fixing position of said each accommodating groove by using said each recess, such that said each attaching material locates the holder in said each accommodating groove.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: May 22, 2018
    Assignee: INNOSERV FA INC.
    Inventors: Yu-Chuan Chiu, Chih-Meng Wu
  • Patent number: 9951859
    Abstract: A gearset includes a gearset housing, a drive shaft, and a radial fan fixed to the drive shaft. Disposed in surrounding relationship to the radial fan is an air-guiding cover which includes a gearset housing section to at least partially cover the gearset housing, a cylindrical section adjoining the gearset housing section and configured to receive an attachment for securement to the drive shaft, and a conical section adjoining the cylindrical section. The conical section of the air-guiding cover is disposed in surrounding relationship to the radial fan directly and without any dead space.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: April 24, 2018
    Assignee: FLENDER GMBH
    Inventor: Simon Becka
  • Patent number: 9927012
    Abstract: An improvement of a worm gear speed reducer is provided where the output gear is substituted by a threaded chain comprised of nut-like threaded bodies mounted on the extended rods of two parallel endless chains, thus the contact surfaces of the drive screw and the threaded chain are much greater than the contact surfaces of the worm gear reducer, and thus the load capacity and wear resistance are much higher. The screw applies the driving force at the centroid of the contact surface of the threaded chain. There are three embodiments which may be a roller screw, a ball screw or a plain translation screw. With the roller screw or the ball screw there is rolling contact and thus the efficiency of the present invention is higher than that of the worm gear reducer which permits it to be used as an amplifier.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: March 27, 2018
    Assignee: UNIVERSIDAD NACIONAL AUTONOMA DE MEXICO
    Inventors: Enrique Jaime Chicurel Y Uziel, Filiberto Gutierrez Martinez
  • Patent number: 9923428
    Abstract: A motor device may include a motor comprising a motor shaft protruded from a motor main body; a worm gear connected with the motor shaft through a coupling; a worm wheel engaged with the worm gear; and a frame on which the motor, the worm gear and the worm wheel are mounted. The coupling may include a motor side coupling part; a transmission member; and a worm gear side coupling part. The motor side coupling part and the transmission member may be relatively movable in a first direction perpendicular to the axial line direction. The transmission member and the worm gear side coupling part may be relatively movable in a second direction perpendicular to the axial line direction and intersecting the first direction. A compression coil spring may be disposed between the transmission member and an end part of the worm gear.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: March 20, 2018
    Assignee: NIDEC SANKYO CORPORATION
    Inventors: Mamoru Yamaoka, Takafumi Kasuga, Yuji Shingu
  • Patent number: 9729022
    Abstract: An electric power steering device (1) according to the present invention includes: a gearbox; and a driving control unit (4) connected to the gearbox through a mounting-portion contact surface (7). The driving control unit (4) includes an outer-diameter gradually increasing surface (11) formed on one end portion thereof, the outer-diameter gradually increasing surface (11) being connected so that an outer diameter thereof on the mounting-portion contact surface (7) matches with an outer diameter of the gearbox. Thus, it is possible to prevent a liquid from entering inside through the mounting-portion contact surface (7), thereby preventing electrical insulating properties of internal electric components from being lowered.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: August 8, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Satoru Akutsu, Kohei Ushio, Yoshihito Asao
  • Patent number: 9512651
    Abstract: A low release effort eccentric double ratchet, double pawl vehicle latch includes a ratchet, a primary pawl, an auxiliary ratchet and a secondary pawl. A drive mechanism including a gear cam wheel sequences movement of the secondary pawl to open and reset the latch. Upon reset, the drive mechanism actuates the auxiliary ratchet back to a closed state in a soft manner without using a hard stop; instead the latch has a cushioning spring that is used to softly stop the gear train during the reset absorbing motor energy and thus eliminating impact noise.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: December 6, 2016
    Assignee: Magna Closures S.p.A.
    Inventors: Marco Taurasi, Francesco Cumbo
  • Patent number: 9509248
    Abstract: A steering device for use in solar tracking equipment includes: a fixed base (10); a rotary base (20) correspondingly connected to the fixed base (10) and provided with a worm gear (22); and a driving module (30) disposed in the fixed base (10) and including a worm unit (33) and an adjustment mechanism (34), the worm unit (33) includes a cylindrical body (331) and a worm (332) supported in the cylindrical body (331), and the cylindrical body (331) is pivoted in the fixed base (10), the adjustment mechanism (34) is disposed corresponding to the cylindrical body (331) for adjusting the swinging motion of the cylindrical body (331), thereby enabling the worm (332) and the worm gear (22) to be mutually engaged. Accordingly, the backlash between the worm and the worm gear is able to be adjusted thereby enhancing the rotation precision.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: November 29, 2016
    Assignee: TIMOTION TECHNOLOGY CO., LTD.
    Inventor: Chou-Hsin Wu
  • Patent number: 9472998
    Abstract: A linear actuator has a stator with two stator coils and pole plates forming stator poles. A rotor is rotatably mounted to interact with the stator poles. The rotor has a hollow cup shaped permanent magnet fitted to a screw shaft. An output shaft, which is co-axial with the rotor, is driven by the rotor through a screw connection. The rotor is supported by a single rotary bearing located within the magnet, axially between axial ends of the permanent magnet.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: October 18, 2016
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Bruno Neuhaus, Michael Watzek, Miha Furlan
  • Patent number: 9435400
    Abstract: A drive unit includes an electric motor, a worm shaft coupled to the motor, a worm gear engaging with the worm shaft, and an output shaft connected to the worm gear. The motor has a motor shaft on which the worm shaft is fixed. The worm shaft is made of plastic. The drive unit further includes a metallic sleeve press fitted to the motor shaft. An outer profile of the sleeve is non-circular. A correspondingly shaped receiving hole is formed in the worm shaft to receive the sleeve. The sleeve rotates with the motor shaft and drives the worm shaft.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: September 6, 2016
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Chi Wang Cheung, Zhong Ping Wu, Hong Yu Ding
  • Patent number: 9381900
    Abstract: An electric brake booster includes an electric motor activating a booster piston acting on the master-cylinder during brake pedal activation. The booster piston is driven in the direction of the action of same on the master-cylinder by an electric motor linked to a mechanical transmission that includes a screw held by the motor shaft. The screw meshes with two symmetrical worm gears that are integral with respective transmission shafts housed in a bearing of the body of the brake booster. The two shafts each carry a spur gear that meshes with a rack of the booster piston. The shafts are free in translation relative to the screw and to the body of the electric brake booster but are integral with each other in the translational movement of same. The shafts are integrally connected in translation by a coupling member formed by a crosspiece carrying two rotation bearings.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: July 5, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Roman Winkler, Philippe Richard, Bastien Cagnac, Francois Gaffe, Jean-Marc Ritt
  • Patent number: 9254742
    Abstract: A grille shutter for a vehicle includes a frame, an actuator, a grille flap, and a grille shaft. The actuator includes a casing mounted on the frame, an electric motor received in the casing, an output member having a first end, a second end and a stop projection between the first and second ends, and stop members stationary relative to the casing. The stop members cooperate with the stop projection to limit rotation of the output member. The grille shaft is coupled to the output member and rotatably couples the grille flap to the frame.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: February 9, 2016
    Assignee: JOHNSON ELECTRIC S.A.
    Inventor: Yan Chappex
  • Patent number: 9234570
    Abstract: This invention refers to a speed reducer made up of a chain carrying nuts and of a screw, i.e., a ball screw in the first embodiment, a roller screw in the second embodiment. The ball screw or the roller screw drives the nuts on one of the straight stretches of the chain. The ball screw, or the roller screw, can be almost as long as the distance between the centers of the output sprockets on which the chain is mounted. Given these features and because the nuts wrap the ball screw, or the roller screw in a great surface, the load capacity is high. Given that in both embodiments there is rolling contact, friction is low and, as a consequence, efficiency is high, and this allows the present invention to serve also as an amplifier.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: January 12, 2016
    Assignee: Universidad Nacional Autonoma de Mexico
    Inventors: Enrique Jaime Chicurel Y Uziel, Filiberto Gutierrez Martinez
  • Patent number: 9222547
    Abstract: A worm wheel (50) is structured integrally with an output shaft (52). The worm wheel (50) includes the output shaft (52), a circular flange (50a) with the output shaft (52) placed as the center, and teeth (50b) formed on the periphery of the flange (50a) and in mesh with a worm. The flange (50a) is provided with a first recessed flange portion (50c) opposite to the side of the output shaft (52), and the bottom (54) of the first recessed flange portion (50c) has a ring-shaped first planar portion (54a).
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: December 29, 2015
    Assignee: Mabuchi Motor Co., Ltd.
    Inventors: Eiji Uenishi, Kazuyuki Yamamoto, Yasuhiro Yamagata, Kiyoto Itou
  • Patent number: 9091337
    Abstract: A reducer of an electric power steering apparatus is disclosed. It reduces rattle noise generated by a backlash due to friction and wear of a worm and a worm wheel or an impact transmitted from a road surface through a wheel and a steering shaft and enhances a steering feeling of a driver by improving the catching phenomenon and rotational resistance generated between a worm shaft and a worm shaft bearing.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: July 28, 2015
    Assignee: MANDO CORPORATION
    Inventors: Bong Sung Ko, Seong Yoon Kim, Seung Yong Pyo, Sung Jae Yoo
  • Patent number: 9066813
    Abstract: Unidirectional dynamic interbody fusion devices and methods of use for insertion into a patient in order to maintain a space between two vertebral bodies. A first interbody fusion device including a body member, at least one side member, and a means for moving the at least one side member relative to the central body member. A second interbody fusion device including a base member, a top member, and a means for moving the top member relative to the base member. A surgical method for maintaining a space between two vertebral bodies in a spine, including obtaining a medical device, inserting and coupling an expansion tool into an opening within the medical device, slidingly inserting the medical device into a space between two vertebral bodies; and rotating the expansion tool to move the at least one side member in a direction relative to the body member.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: June 30, 2015
    Assignee: Biomet Spine, LLC
    Inventors: Jeffrey A. Farris, Daniel Refai, Brian G. Emerick, Ross R. Nichols
  • Publication number: 20150144416
    Abstract: The invention relates to a superposition drive for a superimposed steering system of a motor vehicle, with a drive shaft and a drive gear cooperating with the drive shaft, wherein the drive shaft is pivotally mounted with respect to the drive gear. A lever element pivotally mounted with respect to the drive gear, which is designed and arranged such that pivoting of the lever element entails pivoting of the drive shaft or vice versa pivoting of the drive shaft entails pivoting of the lever element, is provided.
    Type: Application
    Filed: June 20, 2013
    Publication date: May 28, 2015
    Inventor: Thomas Marotzke
  • Patent number: 9021903
    Abstract: A linear actuator has a housing, a piston slideable within the housing along a slide axis, a first shaft rotatable about a first axis substantially perpendicular to the slide axis, a second shaft rotatable about a second axis parallel to the slide axis, in which the second shaft and the piston are engaged to convert rotational motion of the second shaft into linear motion of the piston, and in which the first shaft and the second shaft are engaged by a ball-worm gear.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: May 5, 2015
    Assignee: Airbus Operations Limited
    Inventors: Nicholas Elliott, Arnaud Didey
  • Patent number: 9003912
    Abstract: Reduction gear units are provided comprising a gearbox, a cam assembly, a bearing assembly, a first gear and a second gear. The first and second gears may engage one another and translate rotating movement from one axis to an axis perpendicular thereto. The second gear is disengagable from the first gear by action of the cam assembly, which is adapted to disengage the second gear from the first gear through eccentric rotation of the cam assembly. In one embodiment, a bearing assembly carried by the cam assembly is preloaded. The cam assembly is disposed so that the preloaded can be maintained during manufacture of the gearbox. In another embodiment, the gearbox case and cam assembly are disposed so as to minimize internal leakage from the case and enhance sealing of the gearbox.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: April 14, 2015
    Assignee: Omni USA, Inc.
    Inventors: Jeffrey K. Daniel, Bradford Newcomb
  • Patent number: 8984980
    Abstract: A gear motor assembly includes a casing having a through hole, a motor fixed to the casing, an output shaft, a gear fixed to the output shaft and driven by the motor, and a substantially tubular bearing fixed in the through hole of the casing. The gear has a shaft portion that is sleeved in the bearing. A slot is formed in the inner surface of the bearing and/or the outer surface of the shaft portion and is filled with lubricant.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: March 24, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Wing Cheung Lam, Qiang Xu, Marlou Tampus Malabo
  • Patent number: 8978502
    Abstract: The invention relates to a transmission drive unit (10; 40; 50; 70) having an adapter element made of plastic (22; 22a; 53; 73) via which a torque is initiated by an input element (29) and a drive element (12; 12a; 51; 72) made of metal for forwarding the torque, wherein the adapter element (22; 22a; 53; 73) and the drive element (12; 12a; 51; 72) are directly coupled to one another and rigidly connected, wherein the adapter element (22; 22a; 53; 73) is an injection molded part which is formed by at least partial overmolding of the drive element (12; 12a; 51; 72) and wherein the drive element (12; 12a; 51; 72) serves as a bearing element.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: March 17, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Susanne Albrecht, Frank Braunegger, Robert Heitz, Peter Steuer, Siegfried Reichmann
  • Publication number: 20150059506
    Abstract: The present invention relates to a reducer of an electric power steering apparatus. According to the exemplary embodiments of the present invention, a damping member is provided on an outer circumference surface of a bearing bush so that impact between a worm shaft bearing and a bearing bush can be dampened, and noise generated at the time of impact can be reduced.
    Type: Application
    Filed: June 18, 2014
    Publication date: March 5, 2015
    Inventor: Hyun Bi KWON
  • Patent number: 8967011
    Abstract: A gear structure is configured to support vertical motion of an electric pop-up monitor. More specifically, a double rack gear structure is configured to support a pop-up monitor. The rack gear structure includes an outer gear and an inner gear. The outer gear is coupled at a side of the monitor frame to operate integrally with the monitor frame, and enables the vertical motion of the monitor frame with an ascending or descending motion. The inner gear is received inside the outer gear. The inner gear performs an ascending or descending motion simultaneously with the outer gear, and supports forward and rearward or right and left shaking, which occurs in the outer gear, by maximizing a portion overlapping with the outer gear when the outer gear has ascended to the maximum.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: March 3, 2015
    Assignee: Hyundai Mobis Co., Ltd.
    Inventors: Joung Hoon Lee, Wan Woo Lee
  • Publication number: 20150040707
    Abstract: Disclosed is a reducer of a vehicle. Size and weight of the reducer can be reduced by removing a pivot bearing and a damping coupler which are expensive and used for supporting a movement of a worm shaft and for buffering an impact applied to the worm shaft in a conventional reducer, thereby saving a manufacturing cost.
    Type: Application
    Filed: June 17, 2014
    Publication date: February 12, 2015
    Inventor: Kwang Seok HONG
  • Publication number: 20150040359
    Abstract: A tensioning assembly comprising a worm gear having a core and a thread design formed on the core, wherein the core has a catenoidal shape, is disclosed herein.
    Type: Application
    Filed: August 10, 2013
    Publication date: February 12, 2015
    Applicant: USA Products Group Inc.
    Inventor: Raymond S. Brown
  • Patent number: 8950280
    Abstract: The wear-compensation device for a gear comprises a fixed support capable of being fixed axially on an external element in order to keep the device on the said external element, a bearing designed to be mounted on a shaft comprising one of the wheels of the gear, an eccentric mounted on the bearing and designed to be in contact with the external element, the said eccentric being able to move angularly relative to the fixed support. The device also comprises a torsion spring mounted axially between the fixed support and the eccentric and capable of exerting a circumferential preload force on the said eccentric, the said spring comprising a first end mounted inside a recess of the eccentric and a second end interacting with the fixed support.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: February 10, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Romuald Lescorail, Carole Girardin, Daniel Jansen
  • Patent number: 8950279
    Abstract: A linear actuator includes a motor, a movable unit, and a stroke control unit. The motor includes a spindle. The movable unit includes a worm gear and a rotary shaft. The worm is provided with annular spiral or helix teeth. The stroke control unit includes at least one transmission member and at least one micro switch. The at least one transmission member is engaged with and driven by the spiral or the helix teeth of the movable unit for synchronical rotation to activating or deactivating the micro switch. In this way, the linear actuator is simplified in structure and reduced in volume.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: February 10, 2015
    Assignee: JUF Motor Co., Ltd.
    Inventors: Chih-Hung Cheng, Wei-Ming Huang
  • Patent number: 8950281
    Abstract: A worm-gear assembly including a worm screw having at least one groove and a wheel having a plurality of rotatable pins along its periphery for engaging the worm screw. The pins are able to rotate in a direction other than a direction of wheel rotation. At least one raceway is provided for contacting pins that are not engaged with the worm screw during operation of the assembly.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: February 10, 2015
    Assignee: SpinControl Gearing LLC
    Inventors: Eric D. Carrier, David O. Carrier
  • Publication number: 20150033892
    Abstract: A gear reducer comprising a worm and a crown-wheel assembly, in turn comprising a crown wheel, which is connected/disconnected to/from a drive shaft by means of a torque limiter mounted on this latter. The gear reducer is characterised in that the drive shaft and the torque limiter are comprised in a cartridge which can be extracted/inserted from/in a cavity obtained in the crown-wheel assembly according to an axial direction and in accordance with two opposite senses, without the need to disassemble the worm.
    Type: Application
    Filed: February 27, 2013
    Publication date: February 5, 2015
    Inventors: Gustavo Casamenti, Andrea Legnaro, Matteo Zucchini
  • Patent number: 8939043
    Abstract: Linear actuator comprising a housing (1) consisting of at least two parts (1 a, 1 b) a mounting console (2) a reversible motor (7) with a transmission (22), a spindle (5) which over the transmission is driven by the motor, a bearing (16) for embedding the spindle (5), a spindle nut (6) secured against rotation on the spindle, an outer tube (3) which surrounds the spindle, an activation element (4) telescopically mounted in the outer tube (3) and connected to the spindle nut (6), a front mounting (8) on the outer end of the activation element (4), a rear mounting (9) arranged in the housing. In the rear mounting (9) is a seat for the bearing (31) of the spindle. The motor (7), the transmission (22) and the outer tube (3) is secured to the console (2). The mounting console (2) is constructed as a separate element around which the two parts (1a, 1 b) of the housing is assembled and the mounting console (2) constitutes alone the bearing chassis of the actuator.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: January 27, 2015
    Assignee: Linak A/S
    Inventors: Henrik Winther, Torben Iversen, Juan Miguel Galindo Torres
  • Patent number: 8925411
    Abstract: A rack with a rack tip is disclosed. The rack tip is slidably mounted to the end of the rack.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: January 6, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Yaw Chuan Lee, Boo Siong Lim
  • Publication number: 20150000444
    Abstract: The present invention relates to a transmission (1), in particular for an adjustment drive, comprising a housing (2), a worm shaft (3) which is rotatably mounted in the housing (2) and which can be driven, a worm wheel (4) which is rotatably mounted in the housing (2) and which meshes with the worm shaft (3), an encircling first wedge surface (5) which is formed on the worm wheel (4) or fixedly connected to the worm wheel (4), a brake element (6) which is arranged so as to be rotationally conjoint with respect to the worm wheel (4) and which has a second wedge surface (7), wherein the first wedge surface (5) bears areally against the second wedge surface (7).
    Type: Application
    Filed: October 5, 2012
    Publication date: January 1, 2015
    Applicant: Robert Bosch GmbH
    Inventors: Willi Schmidt, Anja Burger, Gerhard Genter
  • Publication number: 20140373658
    Abstract: A gear box includes a gear box body of a reducer to which a motor is mounted. The gear box body includes a worm, wheel holding section where a worm wheel of the reducer is held, and a motor holding section, where a part of the motor is contained, the motor holding section having a motor mounting opening. The motor holding section is configured such that a bottom of the motor holding section is provided in a region between a line L1 and a line L2. Here, the line L1 passes through the center C of the worm wheel holding section and is perpendicular to the axis line X of a motor shaft. The line L2 is a tangent line passing through an outer edge portion located near a circular outer peripheral wall of the worm wheel holding section on a motor side and is perpendicular to the axis line X of the motor shaft.
    Type: Application
    Filed: June 18, 2014
    Publication date: December 25, 2014
    Inventors: Takashi Tamaki, Satoshi Kikuchi
  • Patent number: 8904895
    Abstract: A worm wheel including first toothing regions transitioning into and on either side of a second toothing region and a complete annular surface on both ends of the worm wheel. The first toothing regions may have a constant outer diameter and the second toothing region may be depressed relative to the first toothing region. The first toothing regions may be globoid toothing regions and the second toothing region may be a cylindrical toothing region.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: December 9, 2014
    Assignee: IMS Gear GmbH
    Inventors: Michael Woehrle, Andreas Voeckt
  • Patent number: 8887591
    Abstract: The invention relates to a geared drive unit (10), in particular a window-lifter drive, comprises a drive-side gear element (11) rotatably mounted in a gear housing (15), by means of which gear element a drive torque can be transmitted to at least one driving element (25, 26) of an output-side coupling element (20). Further, a load torque block is provided, by means of which a torque initiated by the output-side coupling element (20) via the at least one driving element (25, 26) can be blocked, wherein the load torque block comprises a blocking element (42), preferably in the form of a wrap spring, which interacts with an element that is non-rotatably mounted in the gear housing (15) to block the torque. According to the invention, the non-rotatably mounted element is simultaneously constructed as a radial bearing for the drive-side gear element (11).
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: November 18, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Tarek Mili, Detlef Lauk
  • Publication number: 20140331802
    Abstract: A worm gear mechanism (44) comprises a worm (70) and a worm wheel (80) meshed with the worm. In the teeth of a hob (90) used for the gear cutting of the worm wheel, at least the addendum surfaces (91c) are formed into arcuate shapes. The radial centers (93) of the arcs of the addendum surfaces are positioned nearer to a center line (WL?) of the hob than a pitch line (94) of the hob. The worm wheel is cut into a gear by the hob. The worm is formed into the same shape as the hob. The recess meshing length (L) of the worm gear mechanism is designed to be greater than the recess meshing length (Llim) of a conventional worm gear mechanism.
    Type: Application
    Filed: December 3, 2012
    Publication date: November 13, 2014
    Inventors: Yosuke Tanaka, Yasuo Shimizu
  • Publication number: 20140326095
    Abstract: This face gear has a plurality of annularly arranged gear teeth. A recess for holding grease or another lubricant is formed in the tooth surface of each gear tooth. A recess forming area, which is the area in which the recess is formed, is provided between the tooth bottom and the pitch point in each gear tooth. In other words, a recess is not formed in the part of the tooth surface that is located between the tooth tip and the pitch point. As a result, the gear teeth can be effectively lubricated while minimizing instability in the meshing state between gears.
    Type: Application
    Filed: January 21, 2013
    Publication date: November 6, 2014
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Yuki Okabe
  • Publication number: 20140311267
    Abstract: A worm gear has a worm wheel, a drive shaft, and a flexible shaft. The worm wheel meshes with a worm shaft, which is driven by the drive shaft. The flexible shaft can be arranged in the drive shaft with a radial gap between at least a portion of the flexible shaft and the drive shaft. The flexible shaft can be coupled to the drive shaft such that a first spring constant is provided for displacement of the flexible shaft in a radial direction within a first range and a second spring constant is provided for displacement of the flexible shaft in the radial direction within a second range.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 23, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Michael Georg Figura, Erik Jürgen Stumpf, Thomas Marotzke, Fabian Wendt
  • Patent number: 8864231
    Abstract: A bearing assembly for a worm drive supporting the worm of the worm drive with washer-shaped thrust slide bearings and bush-shaped radial slide (sintered oil-containing bearings) bearings. The thrust slide bearings are made of a resin containing 95 to 99.9 wt % of polyetheretherketone resin, which is an aromatic polyetherketone resin. Wear of the thrust slide bearings is reduced and its durability is improved, thereby preventing vibration and noise of the worm drive as well as improving its durability.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: October 21, 2014
    Assignee: NTN Corporation
    Inventors: Masato Shimoda, Masahiko Mizutani
  • Patent number: 8826764
    Abstract: A braking device for a rotating shaft and a gear motor system using the same. The braking device includes a brake subassembly, a rotating shaft, and a sleeve. The rotating shaft is sheathed with the sleeve. The brake subassembly includes an adjustable screw, a spring, and a brake disc. One end of the spring presses on top of the brake disc and the other end presses at the bottom of the adjustable screw. After the adjustable screw is fixed, the bottom surface of the brake disc is tightly against the outer surface of the sleeve. When the adjustable screw is adjusted, the amount of compression of the spring is changed and the pressure imposed on the brake disc by the spring varies accordingly such that the friction between the brake disc and the sleeve is changed.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: September 9, 2014
    Assignee: Zhongshan Broad-Ocean Motor Manufacturing Co., Ltd.
    Inventor: Hui Hu
  • Publication number: 20140213409
    Abstract: Disclosed is a speed reducer capable of precisely and reliably maintaining a rotational force of the output shaft and of maximizing its efficiency by allowing the rotational force of the driving shaft to transmit and to slow down via a plurality of bevel gears and by preventing the fluctuation of the output shaft so as to prevent uneven wear due to the long working and to prevent the damage due to the fluctuation. The speed reducer comprises a pair of driving gears 11,12 installed at a one end of a driving shaft 10 driven by a driving means, a pair of driven gears 21,22 meshed with the driving gear 11,21 and a rotational member 200 for outputting the rotational force to slow down, in which the driven gears 21,22 comprise a bevel gear, respectively and the rotational member 200 is coupled to the driven gears 21,22.
    Type: Application
    Filed: January 21, 2014
    Publication date: July 31, 2014
    Inventor: Eunseok Yoon
  • Publication number: 20140202274
    Abstract: A driving device for driving in rotation a toothed wheel, in particular a turntable, has a worm intended to mesh with the toothed wheel, a motor to drive the worm in rotation, a flexible sleeve that partially surrounds the worm in such a way as to form an assembly described as a worm/sleeve assembly, and a pre-stressing unit. The motor is arranged in a structure that is fitted pivotably relative to the worm/sleeve assembly, and the driving device also has a force transfer unit connecting the motor to the sleeve at a second extremity of the worm.
    Type: Application
    Filed: January 23, 2014
    Publication date: July 24, 2014
    Applicant: MICRO CONTROLE - SPECTRA PHYSICS
    Inventors: Eric Durand, Bruno Rety
  • Patent number: 8776892
    Abstract: A system for rotating an element inside a pressure containing housing. In some embodiments, the mechanism includes a pressure containing housing having an opening through a wall of the housing into an internal chamber in which, in use, the element to be rotated is located, a bushing located within the opening, and a worm gear rotatably mounted in the bushing. The worm gear is offset from the axial centre of the bushing such that rotation of the bushing moves the worm gear between an extended position, wherein the thread of the worm gear engages an element in the chamber, and a retracted position, wherein the thread is disengaged from the element in the chamber.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: July 15, 2014
    Assignee: Cameron International Corporation
    Inventors: Robert Fern, Ted Thornburrow
  • Patent number: 8770063
    Abstract: A gearbox housing assembly includes a first plate constructed of a rigid material and defining a first plane. A second plate of the gearbox housing assembly defines a second plane parallel to and spaced from the first plane. The second plate is constructed of a rigid material. A plurality of connectors couples the first plate and the second plate, with an interior space being defined between the first plate and the second plate. A mounting member is coupled to the second plate and has a mounting portion extending away from the interior space. The mounting member is distinct from the second plate to facilitate interchangeability of the mounting member.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: July 8, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Irfan Bhatti