Varying Speed Ratio Patents (Class 74/393)
  • Patent number: 11944066
    Abstract: Provided is a pet cat excrement screening device. The pet cat excrement screening device includes a support base; a drum rotatably mounted on the support base; and a drum driving device mounted on the support base. The drum is configured to rotate between a first position and a second position under drive of the drum driving device, where the rotation angle of the drum is less than 360 degrees. A side wall of the drum body of the drum is provided with a pet inlet. The pet inlet is exposed out of the support base during a rolling process of the drum. A screening mechanism is mounted in the drum. The rear end of the drum is provided with a waste discharge port.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: April 2, 2024
    Assignee: PETKIT NETWORK TECHNOLOGY(SHANGHAI) CO., LTD.
    Inventors: Yunxin Ma, Xiaoqing Ma, Xin Shi, Weike Guo, Weixue Guo, Junchao Zhang
  • Patent number: 11802433
    Abstract: The motorized drive according to the invention application is configured to open and/or close a wing of a barrier such as a door, main door, gate or swing shutter, a wall or sliding partition or other sliding wing. The motorized drive comprises includes a motor and a first reduction unit through which the motor can open or close the wing. The reduction unit comprises includes a first and a second toothed profile engaging together, thus realizing a gear with a variable transmission ratio depending on the angular and/or linear position of at least one of the two toothed profiles. At least one of the first and of the second toothed profile forms at least one toothed section having a pitch profile which is substantially non-circular or not formed by a simple arc of a circle or a straight line.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: October 31, 2023
    Assignee: FAAC S.P.A.
    Inventors: Danilo Aceto, Samuele Magnoni
  • Patent number: 11794576
    Abstract: A power take-off includes a housing including a mounting surface that is adapted to be secured to a source of rotational energy. The mounting surface has an opening therethrough. An input mechanism includes an input gear that has a portion that extends outwardly from the housing through the opening provided through the mounting surface and is adapted to extend within and be rotatably driven about an input gear rotational axis by a driving gear contained within the source of rotational energy. An output mechanism is disposed within the housing and includes a driven gear that is rotatably driven about an output gear rotational axis by the input gear of the input mechanism. The rotational axis of the input gear and the rotational axis of the driven gear are movable relative to one another so as to minimize the transmission of torque transients and other vibrations therethrough during operation.
    Type: Grant
    Filed: October 11, 2021
    Date of Patent: October 24, 2023
    Assignee: Parker-Hannifin Corporation
    Inventor: Derek E. Muff
  • Patent number: 11787028
    Abstract: A quick fastening device, which comprises an energy storage medium, an impact unit, and a driving mechanism; the driving mechanism comprises a fixed sun gear, an output shaft not linked to the sun gear, a crank fixed on the upper end of the output shaft, a planetary gear installed on the crank in a spinning manner and capable of revolving around the sun gear as the crank rotates, and a connecting rod module mounted on the upper end of the planetary gear and connected to the impact unit. A linkage element is arranged between the planetary gear and the sun gear for driving the planetary gear to rotate in a direction opposite to the direction in which the planetary gear revolves relative to the sun gear.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: October 17, 2023
    Assignee: UNIWISDOM TECHNOLOGY (SUZHOU) CO., LTD
    Inventor: Ying Xu
  • Patent number: 11614086
    Abstract: Aspects described herein relate generally to rotary compressors that incorporate a flywheel within to significantly reduce the compressor vibration and drive torque ripples as well as to achieve a higher overall electro-mechanical efficiency and potentially lower combined costs of BLDC rotary compressors and their drive electronics.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: March 28, 2023
    Assignee: ASPEN COMPRESSOR, LLC
    Inventors: Kang P. Lee, Douglas S. Olsen
  • Patent number: 11505980
    Abstract: The motorized drive according to the application is particularly suitable for auxiliary or emergency drives and is configured to open or close a wing of a barrier such as a door. The motorized drive includes a motor and a reduction unit through which the motor can open or close the wing, an auxiliary motor including a helical spring which is able to absorb mechanical energy during the opening of the wing and release it during the closing of the same, a reduction unit connecting the auxiliary motor to the wing. A first and a second toothed profile realize a gear with a variable transmission ratio. The first and/or the second toothed profile form at least one toothing having a pitch profile which is substantially non-circular or not formed by a simple arc of a circle or a straight line.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: November 22, 2022
    Assignee: FAAC S.P.A.
    Inventors: Danilo Aceto, Samuele Magnoni
  • Patent number: 10612638
    Abstract: In a speed reducing unit with an electric motor, a speed reduction mechanism has: an elliptical cam that rotates together with a rotating part; a flexible external gear that deforms according to the rotation of the elliptical cam; a flexible bearing that is located between the elliptical cam and the flexible external gear; and a movable internal gear that rotates together with an output part. The flexible external gear and the movable internal gear are engaged with each other. The electric motor has: a rotor holder that is part of the rotating part and that rotates together with the elliptical cam; a rotor magnet that is fixed to the rotor holder; and a stator that is fixed to a casing. The rotor holder has a rotor-holder lid part, and the positions of the rotor-holder lid part and the flexible bearing in the axial direction at least partially overlap.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: April 7, 2020
    Assignees: NIDEC-SHIMPO CORPORATION, NIDEC CORPORATION
    Inventors: Tomoyuki Otsuka, Takuro Yonemura, Tsuyoshi Hirokawa, Kosuke Mizuike
  • Patent number: 10465787
    Abstract: The present invention is a variable-ratio line gear mechanism. The mechanism forms a transmission pair consisting of a driving line gear and a driven line gear, of which axes intersect at an arbitrary angle. Transmission is generated by point contact meshing movement of line teeth between the driving line gear and the driven line gear. A contact curve of the line tooth is designed in accordance with space conjugate curve meshing theory, and the designing equation is divided into an equal transmission ratio part and a variable transmission ratio part. The equal transmission ratio part provides a uniform transmission, and the variable transmission ratio part makes the transmission ratio smoothly transit. The line gear mechanism is able to provide periodically transmission with variable transmission ratio, to provide a plurality of transmission ratios during a movement period of the driven line gear, and to enable smooth transitions between respective transmission ratios in accordance with movement rules.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: November 5, 2019
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Yangzhi Chen, Huai Huang, Yueling Lv
  • Patent number: 10407129
    Abstract: A bicycle gear change mechanism includes a first gear including first teeth and a second gear including second teeth. Each of the first teeth includes a first surface and a second surface. The first surface defines a first pressure angle. The second surface defines a second pressure angle. The first pressure angle differs from the second pressure angle. Each of the second teeth includes a third surface and a fourth surface. The third surface defines a third pressure angle. The fourth surface defines a fourth pressure angle. The third pressure angle differs from the fourth pressure angle. The second gear engages the first gear.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: September 10, 2019
    Assignee: Shimano Inc.
    Inventor: Takashi Yamamoto
  • Patent number: 9723825
    Abstract: A drive gear for a spinning reel is meshed with a pinion gear. The drive gear has a gear body, a plurality of drive gear teeth and a waveform regulating part. The gear body is mounted onto a drive shaft. The plurality of drive gear teeth are disposed on an outer peripheral side of the gear body, are circumferentially disposed at intervals and are meshed with the pinion gear. The waveform regulating part is disposed on at least a part of the plural drive gear teeth, and is configured to regulate a waveform of a vibration produced in meshing in an irregular pattern. The waveform regulating part is configured to regulate the waveform in the irregular pattern by having at least one feature of the drive gear teeth be different from the rest of the drive gear teeth, the at least one feature being selected from the group consisting of a pressure angle, a pitch, a torsion angle, a tooth profile shape and a tooth trace shape.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: August 8, 2017
    Assignee: Shimano Inc.
    Inventor: Tetsuo Inoue
  • Patent number: 9277816
    Abstract: A synchronizing device includes a pair of longitudinal guiding units each having a rack member and a movement damper connected to the rack member, and a rotating mechanism including a pair of pinion gears to be meshed respectively with the guiding units. When the pinion gears move respectively from the rack members for rotation respectively on the movement dampers, an increased pressure is produced between the guiding units and the rotating mechanism, thereby slowing down and damping the rotation of the rotating mechanism.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: March 8, 2016
    Assignee: Slide Mei Yao International Co., Ltd.
    Inventor: Tsung-Yao Chen
  • Patent number: 8887831
    Abstract: A power tool includes a housing, a motor contained in the housing, an output shaft extending proximate a front of the housing, an end effector coupled to the output shaft and configured to hold an accessory; and a transmission disposed in the housing between the motor and the output shaft. The transmission includes a variable ratio gear set configured to transmit power from the motor to the output shaft at a substantially variable speed ratio. The transmission may further include a constant ratio gear set configured to transmit power from the motor at a substantially constant speed ratio. The transmission may be automatically or manually shiftable between a first mode where it transmits power through the constant speed ratio gear set and a second mode where it transmits power through the variable speed ratio gear set.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: November 18, 2014
    Assignee: Black & Decker Inc.
    Inventors: Qiang J. Zhang, Beverly Matthews, Sankarshan Murthy
  • Patent number: 8656809
    Abstract: In a gearing, in particular coaxial gearing, hollow shaft gearing, hypoid gearing, axial gearing or linear gearing, with a driving element (7), an element (3) and an output element (11), a stepping-up and transmission of a driving torque between driving element (7) and output element (11) are to take place via a plurality of movable tooth segments (5).
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: February 25, 2014
    Assignee: Wittenstein AG
    Inventors: Thomas Bayer, Michael Schmidt
  • Publication number: 20140000397
    Abstract: A gear pair for a motor vehicle climate control system door drive mechanism includes a drive gear and a driven gear. The drive gear and the driven gear cooperate to form a gear pair, wherein the gear pair is constructed so that a gear ratio of the gear pair transitions from a linear gear ratio to a non-linear gear ratio. The non-linear gear ratio may be proportional to an exponential function. The gear pair is applied to linearly control a climate control door rotation speed when there is a need to meet temperature door linearity performance, and is applied to increase the climate control door rotation speed to meet total temperature door rotation time performance.
    Type: Application
    Filed: March 14, 2013
    Publication date: January 2, 2014
    Applicant: VISTEON GLOBAL TECHNOLOGIES, INC.
    Inventor: Jim Patrick Nolta, JR.
  • Patent number: 8313405
    Abstract: An infinitely variable transmission (IVT) having a rotatable input shaft arranged along a longitudinal axis of the transmission. In one embodiment, the input shaft is adapted to supply a lubricant to the interior of the transmission. In some embodiments, a stator assembly is coupled to, and coaxial with, the input shaft. The IVT has a plurality of planets operably coupled to the stator assembly. The planets are arranged angularly about the longitudinal axis of the transmission. In one embodiment, a traction ring is operably coupled to the planets. The IVT is provided with a housing that is operably coupled to the traction ring. The housing is substantially fixed from rotating with the input shaft. The traction ring is substantially fixed from rotating with the input shaft. In some embodiments, the IVT is provided with a lubricant manifold that is configured to supply a lubricant to the input shaft.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: November 20, 2012
    Assignee: Fallbrook Intellectual Property Company LLC
    Inventors: Matt Bazyn, Jeremy Carter, Charles B Lohr, Curtis Malone, Loren T McDaniel, Peter D Poxton
  • Patent number: 8206262
    Abstract: A differential gear for a wind power plant includes a gearbox with three inputs and outputs. One input is connected to the rotor of the wind power plant, the first output is connected to a generator and the second output is connected to the input shaft of a continuously variable gearbox, the output shaft of which is connected to the generator side output of the gearbox. The input shaft of the continuously variable gearbox is connected to the output shaft of the gearbox via a variable gearbox.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: June 26, 2012
    Assignee: AMSC Austria GmbH
    Inventor: Gerald Hehenberger
  • Publication number: 20120137828
    Abstract: A vehicle is described having a transmission driven through a propulsion unit such as an engine, and through a CVT. The transmission is comprised of an input shaft and an output shaft which are coaxially disposed. An idler shaft is driven by the input shaft, and the idler shaft drives the output shaft, through selected gear sets, to provide different gear ratios or drive directions. The CVT also has a fan on the driven side which feeds air through the CVT for cooling. The CVT comprises a drive side clutch and a driven side clutch with the output shaft of the extending through the CVT driven clutch.
    Type: Application
    Filed: November 1, 2011
    Publication date: June 7, 2012
    Applicant: Polaris Industries Inc.
    Inventors: Benjamin J. Dieter, Alan S. Olson, Daniel Scott Weber, William Burt Rodriguez, John D. Schreier, Stephen L. Nelson, Ron R. Danielson, Roy A. Sunsdahl
  • Publication number: 20110101752
    Abstract: An adjuster for a vehicle seat, in particular for a motor vehicle seat, includes a drive, a gear stage (8) driven by the drive. The gear stage (8) includes a drive wheel (81) rotatable about a first rotational axis (A1) and drive teeth (81a) and a driven wheel (82) rotatable about a second rotational axis (A2) and including driven teeth (82a). Driven wheel (82) meshes with the drive wheel (81) with a fluctuating gear ratio and at least one load bearing gear driven by the gear stage, in particular a geared fitting. The fitting parts thereof performing a relative rotation with a superimposed wobble motion. At least two drive teeth (81a) and/or at least two driven teeth (82a) in the circumferential direction of the associated rotational axis (A1, A2) have different dimensions and/or different spacings from the adjacent teeth, and/or in the axial direction of the associated rotational axis (A1, A2), different dimensions and/or different axial positions.
    Type: Application
    Filed: November 1, 2010
    Publication date: May 5, 2011
    Inventors: Elmar Deegener, Heinz Voss, Rolf Schüler, Bernd Bossmanns
  • Patent number: 7765889
    Abstract: The invention concerns a decreasing reduction start-up phase coaxial mechanical reducer using constantly variable radius gears, with a final direct drive 1:1 ratio obtained without internal movement component.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: August 3, 2010
    Inventor: Jean-Marc Baggio
  • Publication number: 20090139356
    Abstract: A variable ratio steering apparatus including an input shaft, an output shaft, a rotation speed increasing/reducing mechanism, a motor and a drive shaft that is driven by the motor. The rotation speed increasing/reducing mechanism includes an input gear with first internal teeth, an output gear with second internal teeth, a first planetary gear with first external teeth, a second planetary gear with second external teeth, a cylindrical member connecting the first and second planetary gears, and a rotary cam that is rotatively driven by the motor through the drive shaft to thereby turn the first and second planetary gears about a common rotation center of the input and output gears, so that a first meshing portion between the first external teeth and the first internal teeth and the second meshing portion between the second external teeth and the second internal teeth are allowed to displace in the circumferential direction.
    Type: Application
    Filed: November 18, 2008
    Publication date: June 4, 2009
    Inventor: Kyoichi INOUE
  • Publication number: 20080184831
    Abstract: A device and method for preloading a transmission shaft assembly is disclosed. The transmission having the device of the present invention generally has a plurality of gears for providing a plurality of speed ratios. The shaft assembly has a first shaft, a first sleeve shaft, a second sleeve shaft and a first fastener. The first shaft has a flange end and an adjustment end. The first sleeve shaft is concentric with the first shaft and has a first end. The first end of the first sleeve shaft is in communication with the flange end of the first shaft. The second sleeve shaft is concentric with the first shaft and is axially aligned with the first sleeve shaft. The second sleeve shaft has a first end. The plurality of synchronizers for selectively connecting at least one of the plurality of gears to at least one of the first and second sleeve shafts. The first fastener is engagable with the adjustment end of the first shaft and is configured to move axially on the adjustment end.
    Type: Application
    Filed: January 11, 2008
    Publication date: August 7, 2008
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: BORIS I. BURGMAN, John A. Diemer, Henryk Sowul, David B. Mischler
  • Patent number: 7395731
    Abstract: A continuously variable planetary gear set is described having a generally tubular idler, a plurality of balls distributed radially about the idler, each ball having a tiltable axis about which it rotates, a rotatable input disc positioned adjacent to the balls and in contact with each of the balls, a rotatable output disc positioned adjacent to the balls opposite the input disc and in contact with each of the balls such that each of the balls makes three-point contact with the input disc, the output disc and the idler, and a rotatable cage adapted to maintain the axial and radial position of each of the balls, wherein the axes of the balls are oriented by the axial position of the idler.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: July 8, 2008
    Assignee: Fallbrook Technologies Inc.
    Inventors: Donald C Miller, David J Allen, Robert A Smithson
  • Patent number: 7213481
    Abstract: An activating device for a cover has: a shaft unit having a rotary shaft; an arm unit which is coupled to the cover and the rotary shaft; and an actuator which drives the rotary shaft. The actuator has: a motor having a first output portion; a first reducer having an input portion and an output portion; and a second reducer having an input portion and an output portion.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: May 8, 2007
    Assignee: TS Corporation
    Inventors: Kouji Watanabe, Toshihiro Yudate
  • Patent number: 7207232
    Abstract: A continuously variable transmission including a drive element rotatable about a drive axis, an output element rotatable about an output axis parallel to the drive axis, and an adjusting mechanism with which the drive axis and the output axis can be laterally offset from each other. Coupling elements operate between the drive element and the output element and are spaced from each other in the peripheral direction of the drive element and output element for transmitting torque between the elements. The coupling elements change the movement of a peripheral region of the drive element faster than that of the output element so that forces acting on the coupling elements from the drive element and the output element lie substantially in a common plane that extends perpendicularly to the axes of rotation. The continuously variable transmission can be incorporated into a transfer case for an all-wheel drive system.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: April 24, 2007
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventor: Oswald Friedmann
  • Patent number: 7147583
    Abstract: Continuously variable speed power transmission with and without integrated motor/generator components. The transmission has an input member rotatable about an input axis, an output member rotatable about an output axis, a reaction control rotor with optional integrated motor/generator components for selective rotation about the input axis, a pericyclic motion converter mounted for pericyclic motion about the input axis, and a control means for selectively adjusting the rate of rotation of the reaction control rotor relative to the input member. A bevel gear construction is a preferred embodiment of the transmission. A method for varying speed ratios using pericyclic motion is described.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: December 12, 2006
    Inventor: Alphonse J. Lemanski
  • Patent number: 7028572
    Abstract: A pitch transfer gear transmission which enables drive to be transmitted from a gear of having one modulus (42) to a gear having another modulus (46) includes at least two gears (12,16) which have a different number of teeth and which are able to rotate relative to one another, so that the teeth of the two gears (12,16) can form a gear modulus of a first value at one part of the periphery of the gear, and a gear modulus of another value at another part of the periphery of the gear. Continuously variable transmissions are formed by providing an input or output gear (42,46) which has a modulus which varies along the length of the gear. Pitch transfer gear assembly (30) engages with the input or output gear (42,46), and is moveable by a mechanism (59) along the length of the gear changing modulus, so as to set the drive ratio of the transmission.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: April 18, 2006
    Assignee: Aimbridge Pty Ltd.
    Inventors: Eric P Willmot, David Ellis
  • Patent number: 6959645
    Abstract: A printing press for processing continuous webs has a machine frame and printing cylinders exchangeably mounted in the machine frame. A drive is provided. An inking system is mounted in the machine frame. The drive has a two-row gear wheel having a first toothing and a second toothing, wherein the first toothing has an inch-based division and the second toothing has a metric division. The printing cylinders are driven by the first toothing for printing an inch-based size and the printing cylinders are driven by the second toothing for printing a metric size.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: November 1, 2005
    Assignee: Müller Martini Holding AG
    Inventor: Wolfgang Ruoff
  • Publication number: 20040079183
    Abstract: A pitch transfer gear transmission which enables drive to be transmitted from a gear of having one modulus (42) to a gear having another modulus (46) includes at least two gears (12,16) which have a different number of teeth and which are able to rotate relative to one another, so that the teeth of the two gears (12,16) can form a gear modulus of a first value at one part of the periphery of the gear, and a gear modulus of another value at another part of the periphery of the gear. Continuously variable transmissions are formed by providing an input or output gear (42,46) which has a modulus which varies along the length of the gear. Pitch transfer gear assembly (30) engages with the input or output gear (42,46), and is moveable by a mechanism (59) along the length of the gear changing modulus, so as to set the drive ratio of the transmission.
    Type: Application
    Filed: August 21, 2003
    Publication date: April 29, 2004
    Inventors: Eric P Willmot, David Ellis
  • Patent number: 6609440
    Abstract: A structure of a variable transmission device includes an input shaft driven by a motor to perform alternate rotation having a gear on a middle portion, an output shaft having a pair of gears secured to the upper and lower ends respectively and a speed changing shaft positioned between the input and output shaft having a pair of gears rotatably secured to two ends respectively meshed with the gears of the output shaft and a spiral outer periphery on a middle portion rotatably and slidably engaged with an inner threaded gear which meshes with the teeth of the gear of the input shaft. Thereby, the rotation of the input shaft drives the inner threaded gear to rotatably slide about the spiral outer periphery to force the gears of the speed changing shaft to rotate and in turn to drive the gears of the output shaft to rotate in concert with the input shaft.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: August 26, 2003
    Inventor: Chu-Wen Chu
  • Patent number: 6467374
    Abstract: A continuously variable mechanical transmission comprised of two wheels, either friction or toothed, of which one or both are in the shape of hemispheres. A hemisphere wheel is mounted through a bearing on a fork with two pivots attached to the inner race of the bearing, allowing the wheel to rotate around two perpendicular accesses. The center of the wheel is attached to the shaft through a double universal joint or a flexible shaft. The other wheel can be a regular narrow wheel fixed to the second shaft. By rotating the hemisphere wheel around the fork pivots the diameter of the wheel engaged with the second wheel is increased or decreased allowing the transmission rate to vary.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: October 22, 2002
    Inventor: Gregory Kaplun
  • Patent number: 6457452
    Abstract: A rotary piston engine (20) is shown that includes a housing (22) having a toroidal working chamber with inlet (56) and exhaust (54) ports. First and second piston assemblies (30 and 32), each of which includes at least one pair of diametrically opposed pistons (30A and 30B, and 32A and 32B), are located in the working chamber. Piston assemblies (30 and 32) are connected to the engine output shaft through a differential (78) and the Sakita gear sets (74 and 76), each of which gear sets includes a Sakita type 1 gear (74A or 76A) and a Sakita type 2 gear (74B or 76B). The piston assemblies rotate at variable speed, whereby pistons of the slower speed are trailing pistons during portions of the power and intake phases of engine operation. In one embodiment, the Sakita type 1 gear includes teeth in the form of rollers. Also, spark plugs embedded within piston assemblies (30 and 32) are accessible from outside.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: October 1, 2002
    Inventor: Masami Sakita
  • Patent number: 6367577
    Abstract: A vehicle including a variable gear ratio steering device and an electric power steering apparatus is disclosed. The variable gear ratio steering device influences on a steering system of the vehicle and varies a ratio of a steering angle of steerable road wheels to a steering wheel angle by driving an electric motor in accordance with a vehicle speed. The electric power steering apparatus influences on the steering system of the vehicle and provides an assist steering wheel torque by driving an electric motor in accordance with a manual steering wheel torque. The vehicle comprises a power supply voltage detector for detecting a voltage of a power supply, and a control unit for controlling the electric motor of said variable gear ratio steering device in accordance with the detected voltage. When the detected voltage decreases to a certain voltage or lower, the control unit brings the variable gear ratio steering device into a slow state and thereafter stops the same.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: April 9, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Makoto Murata, Takao Kurosawa, Kouji Sasajima
  • Publication number: 20020026842
    Abstract: A continuously variable transmission comprising: an A input member that includes an input shaft and a toothed transmission section, a B output member that includes an output shaft and a toothed transmission section, a plurality of first toothed transmission sections, a moving device loaded with a rotary member plus a moving member and a baffle, and a box for axially supporting and housing each member and device; and the toothed transmission gears oppose each other, the toothed transmission gears and the first toothed transmission section each axially supported at the box are interlocked by gears, and the rotary member is rotatably loaded in contact with the moving device; a space is provided between the toothed transmission gears for inserting the rotary member and a lubricant oil therein to be in contact therewith, the moving device reciprocatingly moves in the space to interlock the toothed transmission gears and the first toothed transmission section by contact via the rotary member, thereby making it poss
    Type: Application
    Filed: June 27, 2001
    Publication date: March 7, 2002
    Inventor: Kanji Tomidokoro
  • Patent number: 6311612
    Abstract: A mechanical press having a variable drive arrangement. The press includes a link drive which drives a crankshaft. The drive altering mechanism includes adjustment means which changes the position of the link drive, thereby altering the drive mechanism of the mechanical press and the corresponding velocity curve of the press slide.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: November 6, 2001
    Assignee: The Minster Machine Company
    Inventor: Richard J. Oen
  • Patent number: 5782132
    Abstract: A mechanism for rotating a crankshaft at ununiform speeds through a main gear and a slider mechanism and a mechanism for rotating a crankshaft at a uniform speed through a main gear fixed to the crankshaft are constructed such that the distances between the centers of rotation of respective main gears and the centers of respective drive shafts are the same. A speed reducing ratio between a drive gear mounted on the drive shaft and the main gear is set to be the same, and the positions of the crankshaft and the drive shaft are set to be the same for both the mechanisms. When rotating the crankshaft at ununiform speeds, a lever provided for the slider mechanism is disposed to orient 180 degree out of phase with respect to the eccentric direction of a crankpin. This obviates a rotation balancing weight which has been provided on the crankshaft in the prior art.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: July 21, 1998
    Assignee: Aida Engineering Ltd.
    Inventors: Shigeo Ishibashi, Tooru Miyashita
  • Patent number: 5718652
    Abstract: The principle of the Coronel Effect resulting from an individual gear simultaneously producing two individually controllable driving functions motivating a second engaged driven gear is described. This principle is incorporated within the Coronel Effect Positively Infinitely Variable (CEPIV) transmission, a true all-geared torque converting positively infinitely variable rotary motion transmission incorporating a user-actuated independent input control to continuously infinitely varies the transmission output between a geared-neutral configuration and full-speed output. The input control varys the tilt angle of a CE drive gear to vary: (1) the degree of CE drive gear circumrevolving production of the Coronel effect counterrotation of an engaged output receiving gear, and (2) the extent of output receiving gear orbiting of the mechanism central axis. The concurrent rotational speed of the CE drive gear is utilized to neutralize the Coronel effect and produce the geared-neutral configuration.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: February 17, 1998
    Inventor: Paul Kay Coronel
  • Patent number: 5692986
    Abstract: A variable dwell cycloidal indexing device for converting a uniform rotational motion into intermittent rotational motion with greater than one predetermined dwell point. The device includes an input shaft having an axis of rotation with a stub shaft extending eccentrically from a distal end of the input shaft. A planetary gear is rotatably mounted on the stub shaft. There is an internal gear rotatably supported on the input shaft and mounted coaxially therewith with the planetary gear intermeshing with said internal gear. A crank pin projects from the planetary gear at a position eccentric to the axis of rotation of the planetary gear. The motion of the crank pin during rotation of the input shaft is defined by allowing the crank pin to oscillate in a slide slot at a fixed location, or by attaching the crank pin to a pivoting link which is, in turn, attached to a fixed point. In either case, rotation of the planetary gear about its own axis is limited.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: December 2, 1997
    Assignee: Eastman Kodak Company
    Inventors: Michael Long, James A. White
  • Patent number: 5682315
    Abstract: The present invention relates to a method and system for controlling a split torque transmission having a hydrostatic transmission and a mechanical transmission. The control system employs a transmission control and includes a transmission input speed sensor, a transmission output speed sensor, a motor speed sensor, a speed input mechanism, a direction control mechanism, and a range selector mechanism. A microprocessor including a fuzzy controller controls the transmission in response to a input from the speed sensors and the speed input mechanism, the direction control mechanism and the range control mechanism.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: October 28, 1997
    Assignee: Caterpillar Inc.
    Inventors: Alan R. Coutant, Michael G. Cronin, Jerry D. Marr, Sanjay Rajagopalan
  • Patent number: 5679088
    Abstract: A change gear system comprises a driven case, a driving shaft and shifting means for shifting the drive shaft, and three sliding frames are provided in alignment in the driven case. Each sliding frame is provided with a pair of rack gears with teeth facing each other and cam surfaces facing each other in parallel with a pitch line of the rack gears. The sliding frames are provided for movement at an angle of 120 (deg.) in different directions perpendicular to the pitch, respectively. The driving shaft is provided with pinions and cam plates. The cam plates are in contact with the cam surfaces, and serve for positioning the sliding frames. The cam plates are configured such that arcs C1 are linked alternatingly with arcs C2.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: October 21, 1997
    Inventor: Keiichi Akashi
  • Patent number: 5666853
    Abstract: The present invention is an epicycle dual drive apparatus comprising a frame supporting an input shaft, an output shaft and an epicycle drive coupling the input shaft and the output shaft. The apparatus has dual clutches means coupled individually to the input shaft and output shaft. The epicycle drive means includes an epicycle rack pivotally secured to said output shaft at one end and a crankshaft journaled for rotation at a second end. The output shaft may have a varying rate of rotation depending on the position of the center of the crank shaft on the epicycle rack with respect to the center of the input shaft. A Cam arrangement is used for coupling the input shaft and the crankshaft. The first clutch coupled to the output shaft allows for selective engagement of the output shaft and the second clutch is coupled to the crankshaft for selective engagement of the crankshaft. Only one clutch can be engaged at a time.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: September 16, 1997
    Assignee: Doboy Packaging Machinery, Inc.
    Inventor: Keenan W. Stahl
  • Patent number: 5653142
    Abstract: To provide an intermittently rotary gearing that converts rotary motion of a motor to intermittent rotary motion by utilizing a mechanical structure, an input shaft interlocking with a drive shaft of the motor is provided, a first gear and a second gear both interlocking with the input shaft when at least the input shaft is rotated in the power output direction of the motor are provided around the input shaft, and a first coiled spring is fitted to the first gear and second gear so as to extend over the bosses thereof. A first divisional shaft and a second divisional shaft are provided in parallel to the input shaft and also coaxially to each other.
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: August 5, 1997
    Inventor: Humio Kato
  • Patent number: 5611246
    Abstract: Apparatus for providing a variable angular velocity coupling between an input shaft (52, 78) and an output shaft (71, 138) includes a fixed frame (72, 74, 76); a first hearing (80) for mounting the input shaft for rotation relative to the fixed frame; a second bearing (140) for mounting the output shaft for rotation relative to the fixed frame; a pair of conjugate cams (48, 50; 82, 84) mounted to the fixed frame, concentric with the input shaft: a first cam follower (54, 60; 114, 118) pivotably supported (64, 66; 90, 92, 98, 100, 102, 104) by the input shaft for engaging a first of the cams; a second cam follower (56, 58; 116, 120) pivotably supported by the input shaft for engaging a second of the cams; a first link (68, 122) extended between the first and second cam followers to cause the followers to move in tandem in response to rotation of the input shaft relative to the cams: an radially extended output arm (70, 136) supported by the output shaft; and a second link (72, 74; 132, 134) extended between at
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: March 18, 1997
    Assignee: Eastman Kodak Company
    Inventors: Michael Long, James A. White
  • Patent number: 5503239
    Abstract: A first shaft and a second shaft are rotatably supported by a casing in a mutually parallel but offset manner, and an intermediate member is interposed between mutually opposing axial ends of these shafts. The intermediate member transmits torque from the first shaft to the second shaft, but the intermediate member is radially slidable relative to the first shaft and is engaged with a radially offset point of the second shaft. Because the distance between the axial center line of the first shaft and the point of engagement between the intermediate member and the second shaft changes with the angular displacement of the first shaft, a desired nonlinear property can be accomplished between the angular displacements of the first shaft and the second shaft. This property can be used for achieving a desired variable gear ratio suitable for the steering device.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: April 2, 1996
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Yasuo Shimizu
  • Patent number: 5417416
    Abstract: An apparatus and method for slowing down signatures sent to a quarter fold of a folder for a printing machine are disclosed. Signatures are transported between a first set of fast belts including upper belts and lower belts. The signatures are then received at their leading edge by an assembly of upper and lower partial pulleys mounted to a frame which changes the speed of the signatures to a slow speed. The signatures are then received at their leading edge by a second set of slow belts including upper belts and lower belts.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: May 23, 1995
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Jean-Claude Marmin, Marie-Helene Pierre, Andre Reponty
  • Patent number: 5343645
    Abstract: A variable speed drive mechanism (4) is disclosed for use in conjunction with multi-sided prismatic convertible sign elements (22). A drive gear (32) driven at constant speed causes a mounting gear (23) to rotate at an angular velocity both slower than the angular velocity of the drive gear (32) and at a varying angular velocity. An idler gear (38) guides a flexible tension supporting element (31) as it travels between an equalizer gear (35) and the drive gear (32). A series of the drive trains (21) may be mounted adjacent to each other so as to permit a plurality of prismatic sign elements (22, 47, 48) to create a convertible sign.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: September 6, 1994
    Assignee: Quality Manufacturing Incorporated
    Inventor: Mortimer J. Huber
  • Patent number: 5287760
    Abstract: A power transmission device of a press machine comprises a rotary shaft rotated around a first axis by the rotation of a flywheel and an arm mounted on the rotary shaft and pivotally connected to a first link. A second link is pivotally connected to the first link so as to be rotated around a second axis, eccentric from the first axis, by the rotation of the arm. A lever is pivotally connected to the second link so as to be rotated around the first axis by the rotation of the second link and is also connected to a crankshaft so as to rotate the crankshaft. A rotor and guide constrain the rotary motion of the second link relative to the second axis to movement along a hypothetical circle centered on the second axis.
    Type: Grant
    Filed: November 5, 1992
    Date of Patent: February 22, 1994
    Assignee: Kabushiki Kaisha Yamada Dobby
    Inventor: Akihiro Yoshida
  • Patent number: 5226337
    Abstract: A Slide driving apparatus of press machine, wherein a main gear 3 as a rotational drive member and a lever member 10 as a driven member are opposed to one another in a eccentric state which an axes O.sub.1 and O.sub.2 are separated, the main gear 3 and the lever member 10 being connected to one another by a connecting member 13 consisting of a pin member 11 and a bush member 12. A drive rotation locus A which can be traced, round the axis O.sub.1, by a movement of a connecting center O.sub.5 where the main gear 3 and the connecting member 13 are connected, and a driven rotation locus B which can be traced, round the axis O.sub.2, by a movement of a connecting center O.sub.4 where the lever member 10 and the connecting member 13 are connected, intersect one another at points of C and D. A slide of the press machine is connected, by the connecting rod, to an eccentric portion 8A of the crankshaft 8 where the lever member 10 is fixed.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: July 13, 1993
    Assignee: Aida Engineering Ltd.
    Inventors: Shozo Imanishi, Masakazu Hashimoto, Touru Miyashita, Osamu Mishima, Takao Ito
  • Patent number: 5222405
    Abstract: A transmission including at least two shafts and a cylindrical member supported by a frame for rotation relative thereto about axes of rotation utilizes a pair of gears and a plurality of speed-adjusting teeth for altering the relative speed of rotation between the shafts and the cylindrical member. Each of the gears is connected to a corresponding one of the shafts for rotation therewith, and the shafts are appropriately coupled to one another so that rotation of one shaft effects a rotation of the other shafts. The speed-adjusting teeth are disposed about the cylindrical member and cooperatively mesh with the gears for transmitting rotary motion between the shafts and cylindrical member and so that at any rotational position of the cylindrical member about its axis of rotation, the speed-adjusting teeth are in meshed relationship with at least one of the gears.
    Type: Grant
    Filed: August 11, 1992
    Date of Patent: June 29, 1993
    Inventor: Harry W. Reynolds
  • 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: 5207736
    Abstract: A process for controlling a hydrostatic adjustment gear (HG) of a hydrostatic-mechanical, continuous, split-output torque shift transmission, where a displacement volume (V.sub.new) is controlled following the engagement of a clutch (K2, K3) of a new gear, taking into consideration a leakage volume (DV.sub.old) in respect to a theoretical displacement volume (V.sub.th), after which the clutch (K2, K3) of the respective previously operating gear, which is still turning, is disengaged, where each new displacement volume (V.sub.new) is determined from the prior leakage volume (DV.sub.old) in accordance with different hydraulic pressure conditions in the adjustment gear (HG) prior to and following the shifting operation, where the setting of the new displacement volume (V.sub.new), which is determined in accordance with the hydraulic pressure conditions from the prior leakage volume (DV.sub.old), takes place in respect to the theoretical displacement volume (V.sub.th) in accordance with a new leakage volume (DV.
    Type: Grant
    Filed: March 26, 1992
    Date of Patent: May 4, 1993
    Assignee: Claas oHG
    Inventor: Nils Fredriksen