One-way Patents (Class 188/30)
  • Patent number: 11493128
    Abstract: A cam device having a drive cam and a driven cam; and a friction engagement device having at least one friction plate and at least one separation plate are provided. The friction engagement device is configured so as to be put into a connected state by pressing the friction plate and the separation plate against each other by the driven cam, and a disconnected state. Also provided are a rotation transmission state switching device having a first member and a second member coaxially arranged, and a mode selecting part configured to rotate or displace in the axial direction according to rotation of the drive cam. The rotation transmission state switching device has at least one mode of a free mode and a lock mode of the first member and the second member, and a one-way clutch mode.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: November 8, 2022
    Assignee: NSK LTD.
    Inventors: Hirotaka Kishida, Ricardo Rodriguez Lopez, Seigou Urakami, Shohei Kaneko, Akihiro Yamamoto
  • Patent number: 11371607
    Abstract: The present invention relates to a locking device (1) of a parking brake, comprising a ratchet wheel (10) movable about an axis of rotation (X), at least two pawls (20) which can engage in the ratchet wheel (10) to fix it, an actuating device (50) and a coupling element (30), wherein the coupling element (30) couples the at least two pawls (20) to the actuating device (50), and wherein the coupling element (30) is movable by the actuating device (50) into a first position (A), in which the at least two pawls (20) allow rotation of the ratchet wheel (10) in a first direction of rotation and a second direction of rotation, and a second position (B), in which the at least two pawls (20) can engage in the ratchet wheel (10) and allow rotation in only the first direction of rotation. The present invention also relates to a parking brake with a locking device (1).
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: June 28, 2022
    Assignee: IMS GEAR SE & CO. KGAA
    Inventors: Johannes Stöhr, Fabian Gruler, Wilfried Synovzik
  • Patent number: 8925705
    Abstract: A one-way coupling includes a cam plate including cams, a pocket plate including pockets, struts, each strut located in one of the pockets, and an electromagnet for engaging one of the struts with one of the cams, including a coil, a core and poles that extend from the coil to said strut, a gap between the poles and the pocket plate exceeding a gap between the poles and said strut.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: January 6, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Dennis N. Wys, Norman J. Bird
  • Patent number: 8025130
    Abstract: A power device includes a motor, a drive shaft, and a roller brake system including a cam mechanism. The motor may put out a driving torque in a first and a second rotary direction. The cam mechanism includes first and second cam members. The first cam member may be in a driven engagement with the motor and the second cam member may be slidably engaged with the first cam member and coupled to the drive shaft. The first cam member includes a circumferentially disposed ramped surface having a stop member at a first end thereof. The said second cam member is axially and rotatably fixed with the drive shaft and includes an axially extending protrusion disposed about a circumference thereof and slidably engaged with the ramped surface.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: September 27, 2011
    Assignee: Warn Industries, Inc.
    Inventor: Ronald L. Elliott
  • Publication number: 20100108412
    Abstract: The present invention provides a device for safely and conveniently conveying an object on a slope. The safety feature includes a fail-safe one-way brake comprising a ratchet wheel, a pawl and a biasing means. In one embodiment, the device is foldable; in another embodiment, the device is integrated with a suitcase; in yet another embodiment, the device is motorized.
    Type: Application
    Filed: March 16, 2007
    Publication date: May 6, 2010
    Inventors: Kannappan@Suresh A/L Lynkaran, Chin Sai Wong
  • Patent number: 7222700
    Abstract: A brake mechanism having a motor output shaft outputting a driving torque in a power-in and a power-out direction. A camming device operably couples the output shaft to a drive shaft for fixed rotation. A one-way clutch operably couples the drive shaft and a brake device. The brake device is normally in an engaged position that prevents rotation of the clutch device. During a holding maneuver, the one-way clutch, camming device, and brake device cooperate to prevent uncommanded movement. However, the nature of the one-way clutch permits free rotation during a power-in direction and the nature of the camming device permits free rotation during a power-out direction.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: May 29, 2007
    Assignee: Warn Industries, Inc.
    Inventor: Ronald L Elliott
  • Patent number: 7066425
    Abstract: The invention a device with retractable anti-roll means designed in particular for a wire dispensing reel (10) having a cylindrical body (11) and end flanges (12, 13). The end flange (12) comprises a circular peripheral rolling edge (2) provided with slots (15a–15f) wherein slide elastic blades (5a–5f) the ends of which constitute retractable radial anti-roll projections (3a–3f). The elastic blades (5a–5f) are integral with a coaxially operated ring (4) whereof the rotation enables to project or retract the radial anti-roll projections (3a–3f).
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: June 27, 2006
    Assignee: Thermocompact
    Inventors: Jean-Claude Cornier, Gilles Mollard
  • Patent number: 6874794
    Abstract: A braking system preferably for an in-line skate includes a brake pad mounted to a forward end of a skate frame and an elevated front wheel attached to the skate frame by two pivot arms. The pivot arms are biased forward which is in a clockwise direction with respect to their pivot point. When skating normally, the pivot arms bias the wheel against the brake pad, but the wheel is elevated from the skating surface and thus the brake is not engaged. When skating in a rearward direction, or desiring a push start, the skater rotates the toe portion of the skate downward and raises the heel. The front wheel will engage the skating surface and the reaction force on the wheel due to friction between it and the skating surface will urge the wheel forward and increase the contact pressure between it and the brake pad.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: April 5, 2005
    Assignee: Hemisphere Group, Inc.
    Inventor: Ronald A Holland
  • Publication number: 20020063180
    Abstract: A fishing reel includes: a fixed member; a rotating member rotatable with respect to the fixed member; a holder provided between the fixed member and the rotating member; and a plurality of rolling member accommodated in the holder for permitting a rotation of the rotating member in one direction and preventing a rotation of the rotating member in the other direction. The plurality of rolling members are provided in wedge regions, defined by the fixed member, rotating member and the holder, having different wedge angles each other, respectively.
    Type: Application
    Filed: October 16, 2001
    Publication date: May 30, 2002
    Applicant: DAIWA SEIKO, INC.
    Inventors: Kazuyuki Matsuda, Eiji Shinohara, Kazuo Hirano, Kyoichi Kaneko
  • Patent number: 5947491
    Abstract: Hand truck or dolly apparatus includes a main frame and a pair of main tires and brake elements secured to the main frame, including a pair of plates movable against the tires. The brake plates are actuable either by a foot operation or by hand operation. The brake plates may be set only by foot operation, while the hand operation of the brakes moves the brake plates against the wheels for a "feathering" brake action. The dolly apparatus also includes a pair of rear stabilizer wheels disposed on a frame pivotally secured to the main frame of the dolly or hand truck. The stabilizer wheels are movable between a down and use position and an up and storage position.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: September 7, 1999
    Inventor: James W. Meier
  • Patent number: 5845746
    Abstract: An automatic braking system for wheelchairs which prevents rearward, downhill motion of wheelchairs while having no effect on horizontal or uphill motion. The braking system is made up of circular ratcheted plates which are attached to the axles of the driving wheels of the wheelchair and L-shaped members slightly in front of and beneath the ratcheted. The L-shaped members are rotatable about axles located in their angles. The long leg of an L-shaped member is directed downwardly by gravity and maintains the short leg in a substantially horizontal position. The short leg forms a pawl which engages the ratchets of the plate when the wheels start to roll backwards when the wheelchair is directed upwardly, thus automatically stopping the wheelchair.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: December 8, 1998
    Inventors: Sarah E. Henrickson, Benjamin G. Conaway, Rakhi Goel
  • Patent number: 5779251
    Abstract: Hand truck or dolly apparatus includes a main frame and a pair of main tires and brake elements secured to the main frame, including a pair of plates movable against the tires. The brake plates are actuable either by a foot operation or by hand operation. The brake plates may be set only by foot operation, while the hand operation of the brakes moves the brake plates against the wheels for a "feathering" brake action. The dolly apparatus also includes a pair of rear stabilizer wheels disposed on a frame pivotally secured to the main frame of the dolly or hand truck. The stabilizer wheels are movable between a down and use position and an up and storage position.
    Type: Grant
    Filed: June 18, 1996
    Date of Patent: July 14, 1998
    Inventor: James W. Meier
  • Patent number: 5713436
    Abstract: A motorcycle rear wheel brake functions to allow the driver to lock the rear wheel on an upward incline. This prevents the motorcycle from rolling backwards while freeing the driver's hands and feet. A simple hinge arrangement wedges the rear wheel and the hinge into the rear fork. A solenoid activates the hinge. An alternate embodiment uses a mechanical cable to move the hinge.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: February 3, 1998
    Assignee: Gjovik Enterprises
    Inventor: Rolan C. Gjovik
  • Patent number: 5625240
    Abstract: Device for positioning a rotating body movable about an axis in relation to a stator body including a magnetic bearing and a locking/releasing device. The locking/releasing device embodies a plurality of clamps with pads adapted to radially grip a shaft of the rotating body. The clamps are articulated on the stator body about axial pins spaced from the rotational axis and evenly distributed in an angular manner about the rotational axis, and can be pivotally moved about the axis, by a moving control part between a released configuration in which the gripping pads are at a maximum distance from the axis and a locked configuration in which the pads are at a minimum distance from the axis suitable for inducing radial clamping of the shaft.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: April 29, 1997
    Assignee: Aerospatiale Societe Nationale Industrielle
    Inventor: Christophe Bernus
  • Patent number: 5388672
    Abstract: A device (10) allows forward (clockwise) rotation of a shaft (12) but prevents reverse rotation unless disengaged. A loop (20) is attached at one end to a slide show (16), passes round a drum (14) on the shaft (12), around a first pin (24) and a second pin (26), to an arm (28). The arm (28) can move clockwise to slacken the loop (20) to disengage the device (10) and allow rotation of the shaft (12) in either sense. A mechanism for controlling the arm (12) and for self-tightening the loop (20) is described.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: February 14, 1995
    Inventor: Brian Hartley
  • Patent number: 5277436
    Abstract: In combination, a hand truck having a unidirectional wheel control ratchet and an adjustable length stair ramp are operable for transporting heavy loads of cargo up flights of stairs. A ratchet wheel and pawl assembly is attached to the wheels of the hand truck to limit the direction of rotation of the wheels to a backward rotation. The stair ramp includes two telescoping U-shaped ramp channels which are spaced so that the wheels of the hand truck can roll within the channels and the ramp further includes upper and lower footing cross members which are pivotally connected to the upper and lower ends of the ramp channels. When the ramp is in place on a flight of stairs the telescoping and pivoting qualities of the ramp allow the channels to rest on the apices of the stair steps. The wheel control ratchets permit a heavily loaded hand truck to be pulled up the stairs along the ramp channels without fear of the hand truck rolling forward and down the ramp.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: January 11, 1994
    Assignee: Magline, Inc.
    Inventors: John H. Frank, Victor Rocha
  • Patent number: 5211414
    Abstract: A lightweight, optionally foldable wheelchair which allows the user maximum control over both travel direction and seat position. The wheelchair is driven manually by an arrangement of drive gears, which are actuated by a drive gear selector and operated by rotating a pair of opposed handwheels, one of which is contacted by each of the occupant's hands. One of four or more different gears may be selected, including a "Forward Only" and a "Reverse Only" gear, which allow travel only in the direction selected. A dual function shift lever supports the drive gear selector and may be activated to disengage the drive gears and engage a seat positioning gear. When the seat positioning gear is engaged, rotation of the handwheels by the wheelchair occupant will activate a seat raising mechanism which moves the seat from a horizontal sitting position to a substantially vertical position toward the rear of the wheelchair.
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: May 18, 1993
    Assignee: Regain, Inc.
    Inventor: Michael H. Galumbeck
  • Patent number: 5029674
    Abstract: A manually operable hand braking device for such as but not necessarily confined to, a wheel (23) of a wheel chair. The device including a mounting member fixed adjacent the wheel periphery (23a), and a body part (5) mounted for partial rotation about an axis (7) of the mounting member (1) (2) extending transversely of the wheel (23); movement of the body part (5) being effected by a hand grip (26) and lever part (24), extending from the body part (5). The body part (5) being provided with two projecting spaced brake lock parts (21,22) disposed adjacent the wheel periphery (23a) or tire thereon, and arranged so that either of the brake lock parts (21 or 22) are engageable with the wheel periphery (23a) or tire on rotational movement of the body part (5), in one direction or the other, there being an intermediate position permitting freedom of rotation of the wheel (23).
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: July 9, 1991
    Inventors: Barrie J. Boyes, Paul D. Boyes
  • Patent number: 4925252
    Abstract: An automobile brake system includes a master cylinder, a wheel cylinder and a solenoid actuated valve between the master cylinder and the wheel cylinder. The solenoid actuated valve is actuatable for maintaining high fluid pressure in the wheel cylinder after a brake pedal associated with the master cylinder has been released in order to prevent unwanted rearward rolling movement of a vehicle once it has stopped.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: May 15, 1990
    Inventor: Nam Y. Hee
  • Patent number: 4867282
    Abstract: The invention relates to an anti-roll back device of particular applicability to motor vehicles but which can be applied to any rotating member where in ordinary useage the rotatable member is required to be rotated in one direction and prevented from rotating in the opposite direction but which has the further capability of being activated to permit the rotation in the opposite direction as and when it is required.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: September 19, 1989
    Inventor: Brian Hartley
  • Patent number: 4856959
    Abstract: A carrier for a cylindrical container possesses function of raising the container from a fallen position to an upright position. The carrier comprises a movable dolly, a lift drive assembly mounted on the dolly, a lift frame provided on the dolly, a clamp assembly provided on the lift frame, a pair of arms extending from the lift frame and spaced apart by a distance smaller than the lateral width of the cylindrical container to be lifted, the arms being movable between a horizontal position and an upright position each in a vertical plane along the direction of advance of the carrier, and one-way brake means for preventing the dolly from retraction but permitting the advance of the dolly when the container is raised to an upright position and lifted or lowered.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: August 15, 1989
    Assignee: Osaka Taiyu Co., Ltd.
    Inventor: Toshikazu Tabayashi
  • Patent number: 4638890
    Abstract: The brakes of a bicycle are actuated in response to rotation of the pedal crank in a reverse direction. The brake actuating mechanism includes an actuating member which is connected to the pedal crank by a freewheel and a slip coupling. The freewheel is disengaged during forward rotation of the pedal crank, and it is engaged during reverse rotation of the pedal crank to move the actuating member and operate the brakes. During heavy braking, the slip coupling reduces the force exerted by the actuating mechanism on the brake operating cables. Movement of the actuating member also unblocks a freewheel which normally blocks reverse rotation of a driven wheel of the bicycle. This unblocking action prevents the pedals from locking after heavy braking.
    Type: Grant
    Filed: July 13, 1984
    Date of Patent: January 27, 1987
    Assignee: AB Trama
    Inventor: Oskar E. Lohman
  • Patent number: 4461365
    Abstract: A device for propelling a bicycle or the like comprising in combination, a frame having wheels and an overlying cargo carrier instrumentality, a power pack disposed thereon adapted to drive said wheels, hitching instrumentalities connecting said frame to the bicycle rearwardly thereof, and suspension instrumentalities disposed between said wheels and said frame whereby road irregularities and the like are absorbed by said suspension instrumentalities and in part by said hitching instrumentalities, said hitching instrumentalities providing the bicycle a complete normal range of motion.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: July 24, 1984
    Inventor: Thomas M. Diggs
  • Patent number: 4410195
    Abstract: By providing a bicycle with a one-way brake coupled between the front wheel and the frame of the bicycle, the one-way brake being configured to permit only forward rotation of the front wheel, dangerous reverse rotation of the front wheel, which accompanies turning abruptly without adequate forward momentum and/or with an incorrect leaning angle, is avoided and the precipitous falling and serious injury to the rider which normally accompanies reverse rotation of the front wheel under these conditions is prevented.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: October 18, 1983
    Inventor: Hermenegildo C. Agustin