Cranks And Pedals Patents (Class 74/594.1)
  • Patent number: 9616281
    Abstract: An exercise equipment with an improved connecting bar connecting an exercise foot retaining device to a resistance, wherein a first longitudinal pedal bar is connected to a first bent longitudinal pedal connector bar and a second longitudinal pedal bar is connected to a second bent longitudinal pedal connector bar, the first and second bent longitudinal connector bars each having a bent angle greater than zero and less than ninety degrees to thereby prevent the occurrence of a dead angle.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: April 11, 2017
    Assignee: Hupa International Inc.
    Inventor: Bob Hsiung
  • Patent number: 9388847
    Abstract: A bottom bracket assembly for bicycle frames aligns crankshaft bearings. The assembly is press fitted into the bottom bracket shell to journal the crankshaft. An elongated, rigid, unibody sleeve comprises a terminal end and a spaced apart leading end which both receive and support a radial contact bearing that is press fitted into a machined bore. Each bore comprises an interference fit zone for bearing retention and a larger, pressure relief zone comprising a channel and an adjacent, buffering slope that compensates for stresses. Dust shields coaxially abut the bearing exteriors. An inner, tubular buttress bushing coaxially occupies the sleeve interior and extends between the spaced apart bearings to brace them. Externally the sleeve has a pair of integral, friction retention contact interfaces separated by a reduced diameter optimization zone. The sleeve terminal end has an integral stop flange that abuts the frame bottom bracket shell contacting the crank arm.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: July 12, 2016
    Inventors: Wesley Warren Wolfenbarger, Gary Edward Mailhiot, Jr.
  • Patent number: 9377600
    Abstract: An improved mount for, and method of mounting, an optical structure having a grooved/relieved protruding member with a damping ring therein or on is provided. The grooved/relieved protruding member may extend from the optical structure, and an upper element having a first opening extending therethrough may receive at least a portion of the grooved/relieved member in the first opening. The upper element may include second and third openings therein that operate along with the first opening and a tightening mechanism. Tightening of the tightening mechanism into at least one of the third opening and the second opening causes the ends of the head portions to draw toward each other so that the first opening of the upper element tightens around the at least a portion of the grooved/relieved protruding member.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: June 28, 2016
    Assignee: PLX, Inc.
    Inventors: Itai Vishnia, Zvi Bleier
  • Patent number: 9359042
    Abstract: A bicycle crank assembly is provided with a crank arm that includes a first outer shell, a second outer shell, and a pedal attachment structure. The first outer shell is a one-piece, pressed sheet metal member with the projecting part being a bent portion that defines the first pedal axle opening. The first outer shell has a projecting part projecting from the first outer shell in an axial direction. The first and second outer shells are adhesively attached together to form an interior cavity. The pedal attachment structure includes an abutment face with a recess formed in the abutment face such that the abutment face contacts the first outer shell adjacent the first pedal axle opening and the projecting part of the first outer shell is disposed in the recess of the pedal attachment structure.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: June 7, 2016
    Assignee: Shimano Inc.
    Inventors: Tetsu Nonoshita, Masahiro Yamanaka
  • Patent number: 9254413
    Abstract: An elliptical exerciser includes a body having two foot support links and two rotation members. The rotation members are rotated about their respective rotation pivots to drive the foot support links to move along a supporting travel and a crossing travel to complete a closed pedal trajectory. The timing adjustment wheel is pivotally connected to the body. A distance is defined between the pivot of the timing adjustment wheel and either of the rotation pivots of the rotation members. Two connecting links are pivotally connected to the timing adjustment wheel. The lengths of the two connecting links are longer than the distance. When one of the foot support links moves within the supporting travel and rotates one of the rotation members, the timing adjustment wheel drives the other foot support link to move within the crossing travel and produces speed and phase differences to be more ergonomic.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: February 9, 2016
    Assignee: KUN SHAN UNIVERSITY
    Inventors: Fu-Chen Chen, Wei-Ren Chen, Meng-Hui Hsu
  • Patent number: 9254412
    Abstract: An exerciser includes a body and an adjustment wheel. The body has two flywheels and two foot support links. The two flywheels each have a sliding portion which radially connected thereto so as to guide the two foot support links to alternatively move along a supporting travel and a crossing travel to complete a closed pedal trajectory when the flywheels rotate. The timing adjustment wheel is pivotally connected to the body. The timing adjustment wheel has a first slider and a second slider, the first and second sliders are configured to move along the sliding portions of the flywheels. The foot support links drives the flywheel to rotate so that the first and second sliders move along the sliding portions to change the speeds and phase differences of the foot support links so as to meet the principles of ergonomics.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: February 9, 2016
    Assignee: KUN SHAN UNIVERSITY
    Inventors: Fu-Chen Chen, Wei-Ren Chen, Meng-Hui Hsu
  • Patent number: 9027439
    Abstract: A crank arm is provided, which includes a first connecting member and a second connecting member used for joining the first connecting member. The first connecting member has a first wall surface, the first wall surface is provided with a joint wall of an annular structure, and a wall surface of the joint wall is a concave-convex surface. The second connecting member is provided with a second wall surface opposite to the first wall surface, an annular wall and two facing ribs extend from the second wall surface, and the annular wall and the ribs have a groove there-between for fitting the joint wall therein. Therefore, a contact area of the first connecting member and the second connecting member is increased, and a shear force resisting function is provided.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: May 12, 2015
    Assignee: Tien Hsin Industries Co., Ltd.
    Inventor: Sandro Feltrin
  • Patent number: 8955410
    Abstract: A bicycle crank assembly is basically provided with a crank axle, a first outer shell member, a second outer shell member, a first crank axle supporting member and a second crank axle supporting member. The crank axle has an end portion with an external mounting surface and an internal mounting surface. The first and second outer shell members are arranged relative to each other with a space being formed between the first and second outer shell members. The first crank axle supporting member is disposed on the first outer shell member and supports the external mounting surface of the crank axle. The second crank axle supporting member is disposed on the first outer shell member and supports the internal mounting surface of the crank axle.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: February 17, 2015
    Assignee: Shimano Inc.
    Inventors: Masahiro Yamanaka, Eigo Kuroiwa, Tetsu Nonoshita
  • Publication number: 20150007688
    Abstract: A crank arm is provided, which includes a first connecting member and a second connecting member used for joining the first connecting member. The first connecting member has a first wall surface, the first wall surface is provided with a joint wall of an annular structure, and a wall surface of the joint wall is a concave-convex surface. The second connecting member is provided with a second wall surface opposite to the first wall surface, an annular wall and two facing ribs extend from the second wall surface, and the annular wall and the ribs have a groove there-between for fitting the joint wall therein. Therefore, a contact area of the first connecting member and the second connecting member is increased, and a shear force resisting function is provided.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 8, 2015
    Inventor: SANDRO FELTRIN
  • Publication number: 20150000459
    Abstract: A composite bicycle component comprises a first member, a second member, a bonding member, and an inner holding member. The first member is made of metallic material. The second member is made of non-metallic material. The first and second members are configured to form an interior cavity therebetween in a state where the first and second members are attached to each other. The bonding member is configured to attach the first and second members to each other. The inner holding member is configured to be disposed within the interior cavity so as to prevent the first and second members from being separated from each other until completion of attaching the first and second members to each other.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Tetsu NONOSHITA, Masahiro YAMANAKA
  • Publication number: 20140360314
    Abstract: A crankset and bottom bracket assembly for a bicycle having a spindle. The crankset and bottom bracket assembly comprising a first crank. The first crank comprising a first ratchet mechanism configured for connection to the spindle at a first end. Wherein when the first ratchet mechanism is rotated in a first direction relative to the spindle, the pawl does not engage the tooth and the first crank freewheels relative to the spindle, and wherein when the first ratchet mechanism is rotated in a second direction relative to the spindle, the pawl engages the tooth and rotation of the first crank drives the rotation of the spindle.
    Type: Application
    Filed: April 24, 2014
    Publication date: December 11, 2014
    Inventor: Mark Bradley Sams
  • Patent number: 8904905
    Abstract: A crank detachable holder is provided with a crank arm attachment part and a holding part. The crank arm attachment part has a mounting opening dimensioned to receive a bolt for connecting the crank arm to a crank axle. The holding part connected to the crank arm attachment part. The crank detachable holder is preferably part of a bicycle crank arm assembly.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: December 9, 2014
    Assignee: Shimano Inc.
    Inventors: Takumi Onogi, Yuta Mizutani
  • Publication number: 20140345419
    Abstract: A crank arm for a bicycle may include a body extending along a body axis and having a first body end and a second body end axially spaced apart from the first body end. The insert may also include an insert provided toward the first body end. The insert may include a base portion having a radially outer surface. At least one extension may extend outwardly from the radially outer surface and may be encased within a corresponding recess in the body whereby relative planar movement between the body and the at least one extension in a first plane. The retaining portion may have a retaining portion width measured in the first direction and the retaining width may be greater than the throat width thereby inhibiting relative radial movement between the at least one extension and the recess and preventing radial extraction of the extension from the corresponding recess.
    Type: Application
    Filed: July 25, 2014
    Publication date: November 27, 2014
    Inventors: Jonathan Staples, Paul Sidlick
  • Patent number: 8893581
    Abstract: A pedal adjuster which may be used with a pedal device such as a bicycle or stationary bicycle and which allows a user to tilt pedals relative to the horizontal plane in order to accommodate a foot that is everted or inverted relative to the vertical midline of the user's body. The illustrated embodiment of this invention includes an outer tube with a plurality of locking pin holes and a means for attachment to a crank arm, an inner rod housed coaxially within the outer tube and having a means for attachment to a pedal and a means for adjustably positioning the inner rod within the outer tube.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: November 25, 2014
    Inventor: Larry White
  • Publication number: 20140319797
    Abstract: A quick release bicycle crank assembly for a bicycle allows installation and removal of cranks from a crankset without the use of tools. The quick release mechanism has a coupling and a spindle wherein the coupling includes an outer sleeve that opens and closes the coupling, thereby allowing the spindle to be inserted or removed from the coupling.
    Type: Application
    Filed: December 31, 2013
    Publication date: October 30, 2014
    Applicant: PACIFIC CYCLE, LLC
    Inventor: Lee Emmons
  • Patent number: 8863616
    Abstract: A bicycle pedal crank has an elongated body and a first end portion with a first seat for coupling with a bottom bracket of the bicycle, a second end portion with a second seat for coupling with a pedal, and an intermediate portion extending between the first end portion and said second end portion and having an inner portion substantially without structural strength and a first reinforcement structure. The first reinforcement structure has a tubular structure arranged around said inner portion and extending longitudinally not longer than the longitudinal extension of the intermediate portion. The extension of the tubular element is limited to the intermediate portion of the pedal crank. The crank may be manufactured in a simple, quick way in a completely automated manner, using a filling material molded under high pressure.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: October 21, 2014
    Assignee: Campagnolo S.R.L.
    Inventors: Gabriele Ciavatta, Mauri Feltrin
  • Patent number: 8820192
    Abstract: A crank arm for a bicycle may include a body extending along a body axis and having a first body end and a second body end axially spaced apart from the first body end. The insert may also include an insert provided toward the first body end. The insert may include a base portion having a radially outer surface. At least one extension may extend outwardly from the radially outer surface and may be encased within a corresponding recess in the body whereby relative planar movement between the body and the at least one extension in a first plane. The retaining portion may have a retaining portion width measured in the first direction and the retaining width may be greater than the throat width thereby inhibiting relative radial movement between the at least one extension and the recess and preventing radial extraction of the extension from the corresponding recess.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: September 2, 2014
    Assignee: Race Face Prerformance Products Inc.
    Inventors: Jonathan Staples, Paul Sidlick
  • Publication number: 20140217695
    Abstract: This invention provides a novel solution for an optimally powered crank for a human-powered vehicle, such as a bicycle. This invention includes a novel system and method to optimize the length of each crank arm throughout the revolution of the crank assembly. First, a crank arm assembly is attached to the bicycle's existing spindle assembly. The crank arm assembly includes a rail section that is fixed at one end to the mounting section of the crank arm assembly. Next, the opposite end of the rail section is attached to the sliding section of the crank arm assembly. The sliding section of the crank arm assembly also includes a feature that allows the sliding section to collapse and expand along the rail section. The crank arm assembly also includes at least two track rollers mounted to the side of each sliding section designed to reduce friction and counter inertial forces associated with the crank arm assembly sliding along the tracks. Next, the assembly includes two tracks mounted on each side of the frame.
    Type: Application
    Filed: March 11, 2013
    Publication date: August 7, 2014
    Inventor: Sergio Landau
  • Patent number: 8797027
    Abstract: A bottom bracket with a torque sensor unit. The bottom bracket has at least one pedal crank, a shaft that is non-rotatably connected to the at least one pedal crank, and a torque detection device for detecting a torque in the region of the shaft. The torque detection device has a first magnetization and a sensor which detects a change of the first magnetized due to a torque passed into the shaft. The bottom bracket allows a reliable and fast detection of torques, especially of the different torques of both pedal cranks. Utilizing the shaft, which is designed as a hollow shaft and the first magnetization, which is arranged on at least one section of the shaft.
    Type: Grant
    Filed: December 6, 2008
    Date of Patent: August 5, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Stefan Glueck, Michael Pausch, Frank Benkert
  • Patent number: 8789841
    Abstract: A pedaled vehicle includes a frame, a wheel rotatably coupled to the frame, a crank assembly operatively coupled to the wheel and having a bore, a pedal received in the bore, and a spring clip for securing the pedal to the crank assembly. The spring clip includes at least one flexible tab or leg capable of flexing between a first configuration, where the spring clip allows a shaft of the pedal to pass through the bore, and a second configuration, where the pedal shaft is prevented from being removed from the bore. A method for coupling a pedal to a vehicle in a tool-less manner is also disclosed.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: July 29, 2014
    Assignee: Huffy Corporation
    Inventors: Mark A. Laipple, Robert L. Diekman
  • Patent number: 8770061
    Abstract: A crank assembly for a bicycle's bottom bracket assembly comprises a shaft extending along a longitudinal axis, at least one crank arm associated with at least one free end of said shaft, first front coupling means formed on said shaft and second front coupling means formed on said at least one crank arm, said first and second front coupling means being coupled together. In particular, the aforementioned first and second front coupling means comprise respective front toothings. The front coupling is located in an end zone, or on the outside, of a bottom bracket assembly's shaft's housing box formed in the bicycle's frame. The front coupling introduces a structural discontinuity between crank arm and shaft, for which reason the bending load exerted on the crank arm during pedaling is transmitted to the shaft to a small degree. Such a structural discontinuity is located at the shaft/crank arm interface.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: July 8, 2014
    Assignee: Campagnolo S.R.L.
    Inventors: Mario Meggiolan, Maurizio Valle
  • Publication number: 20140182413
    Abstract: A bicycle crank arm includes a first member and a second member. The first member has a crank axle interacting portion and a first recessed part around the crank axle interacting portion. The second member is attached to the first member. The first member has a first side facing the second member and a second side opposite to the first side. The first recessed part is recessed from the second side toward the first side such that the first recessed part includes an attachment area attached to the second member on the first side.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 3, 2014
    Applicant: SHIMANO INC.
    Inventors: Masahiro YAMANAKA, Yusuke NISHIMOTO, Tetsu NONOSHITA, Yuki WATANABE
  • Publication number: 20140178704
    Abstract: The invention relates to a bicycle component, for example a rim, comprising a body made from aluminium and a body made from composite material coupled with a first surface portion of the body made from aluminium. Such a first surface portion has been subjected to a deoxidation surface treatment. An adhesive substance has been then applied on at least part of said first surface portion for gluing the body made from aluminium to the body made from composite material. A second surface portion of the body made from aluminium has been subjected to an oxidation surface treatment with subsequent fixing of the oxide.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 26, 2014
    Applicant: CAMPAGNOLO S.r.l.
    Inventors: Paolo FABRIS, Mauri FELTRIN
  • Publication number: 20140157948
    Abstract: A crank detachable holder is provided with a crank arm attachment part and a holding part. The crank arm attachment part has a mounting opening dimensioned to receive a bolt for connecting the crank arm to a crank axle. The holding part connected to the crank arm attachment part. The crank detachable holder is preferably part of a bicycle crank arm assembly.
    Type: Application
    Filed: December 11, 2012
    Publication date: June 12, 2014
    Applicant: SHIMANO INC.
    Inventors: Takumi ONOGI, Yuta MIZUTANI
  • Publication number: 20140157950
    Abstract: The present invention is directed to a device for synchronously actuating at least two independent controlled apparatuses at two sides of the bottom bracket of the bicycle through a driving process. The independent controlled apparatuses can be foldable pedals or quick-disassembling pedals or foldable cranks.
    Type: Application
    Filed: June 11, 2013
    Publication date: June 12, 2014
    Inventor: Dongjun Wang
  • Publication number: 20140144285
    Abstract: A bicycle crank axle assembly has first and second crank arms that are attached to opposite ends of a crank axle. The ends of the crank axle are non-rotatably disposed in axle mounting openings of the first and second crank arms. A first end of the crank axle has at least one axially extending first spline that protrudes radially outward from an outer peripheral surface of its middle body portion. The at least one axially extending first spline non-rotatably couples the crank axle to the first crank arm and prevents outward axial movement of the first crank arm away from the second crank arm. The second end portion of the crank axle has at least one recess that extend radially inward with respect to the outer peripheral surface of the middle body portion to form at least one axially extending second spline.
    Type: Application
    Filed: January 29, 2014
    Publication date: May 29, 2014
    Applicant: Shimano Inc.
    Inventors: Masahiro YAMANAKA, Yusuke NISHIMOTO, Shingo SHIRAISHI, Akinobu SUGIMOTO
  • Patent number: 8720304
    Abstract: A bicycle crank assembly of bicycle cranks and axle includes a first crank having a first hole which has a first open end and a second open end opposite the first open end. A first protrusion extends from the inner periphery of the first open end and a second protrusion extends from the first protrusion. The second protrusion has a first restriction face. An axle extends through the first crank and has a third end and a fourth end opposite the third end. The third end has a fixing portion on the outside thereof. The fixing portion has a recessed portion defined in the connection area with the axle. The recessed portion has a second restriction face which is matched with the first restriction face so as to evenly share the stress.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: May 13, 2014
    Inventor: Yu-Sheng Kao
  • Patent number: 8707825
    Abstract: The teachings provided herein relate to an articulable crankset for converting a pedal-powered vehicle into a push-powered vehicle having the articulable crankset in a retracted position to provide at least less of an obstruction to a user's legs during use of the push-powered vehicle than a non-retractable crankset. The vehicle can be a bicycle, and the articulable crankset can be a component of a production bicycle or a component of a conversion kit that will convert a bicycle from a pedal-powered bicycle to a convertible bicycle that can also function as a push-powered bicycle.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: April 29, 2014
    Assignee: Kroozn, LLC
    Inventors: Brian Kinting Shiu, Vanessa Chen-Hwa Shiu
  • Patent number: 8707823
    Abstract: A pedal crank for a bicycle comprising structural fibers incorporated in a matrix of polymeric material which has two seats in which two metal inserts are received. The seats have a mouth which opens onto the outer surface of the pedal crank and have a geometry such as to allow the insertion of the inserts from outside of the pedal crank.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: April 29, 2014
    Assignee: Campagnolo S.R.L.
    Inventor: Giuseppe Dal Prá
  • Publication number: 20140109722
    Abstract: A bicycle bottom bracket assembly that reduces the accumulation of dirt and/or corrosive substances inside the shaft extending between the crank arms of the assembly. The bottom bracket assembly includes a shaft having a through-cavity that extends along its longitudinal direction; a crank arm is associated with each end portion of the shaft, and the through-cavity extends unobstructed through the crank arms and the shaft.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 24, 2014
    Applicant: Campagnolo S.r.I.
    Inventors: Giuseppe Dal Prà, Nicola Sgreva
  • Patent number: 8689663
    Abstract: An anti-theft bicycle pedal is disclosed. The mounting end of the pedal is shaped with polygonal faces and/or splines to match an opening on the crank so that when the mounting end of the pedal axle is inserted into the matching opening and locked into place, the pedal cannot be removed without an unlocking agent. With an unlocking agent, the pedal is easily removed without tools. The pedal can be reversibly mounted on the crank so that the bicycle cannot be pedaled away, or so that the pedal can be stowed during transport or storage. The pedal cannot rotate in the crank as a result of polygonal faces and/or splines on the mounting end that resist rotation. A physical stop can be used to control the symmetry of insertion into the opening which facilitates reversible mounting.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: April 8, 2014
    Inventor: Geoffrey Paul Weber
  • Patent number: 8689662
    Abstract: A bottom bracket assembly (1) of a bicycle is disclosed. The bottom bracket assembly includes a shaft (2) extending along a predetermined longitudinal direction and a pair of bearings (31, 41) adapted to rotatably support the shaft (2) with respect to a housing box (10) provided in a bicycle frame, the bearings (31, 41) being mounted on the shaft (2) at opposite end portions (3, 4) of the shaft (2). The opposite end portions (3, 4) of the shaft (2) have an outer diameter (D2) between 28 mm and 37 mm, bounds being included, and the distance (D1) between the median planes (Y1, Y2) of the bearings (31, 41) along the longitudinal direction is between 80 mm and 100 mm, bounds being included.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: April 8, 2014
    Assignee: Campagnolo S.R.L.
    Inventors: Paolo Pasqua, Vittorio Babini
  • Patent number: 8677859
    Abstract: A bicycle crank axle assembly has first and second crank arms that are attached to opposite ends of a crank axle. The ends of the crank axle are non-rotatably disposed in axle mounting openings of the first and second crank arms. A first end of the crank axle has at least one axially extending first spline that protrudes radially outward from an outer peripheral surface of its middle body portion. The at least one axially extending first spline non-rotatably couples the crank axle to the first crank arm and prevents outward axial movement of the first crank arm away from the second crank arm. The second end portion of the crank axle has at least one recess that extend radially inward with respect to the outer peripheral surface of the middle body portion to form at least one axially extending second spline.
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: March 25, 2014
    Assignee: Shimano Inc.
    Inventors: Masahiro Yamanaka, Yusuke Nishimoto, Shingo Shiraishi, Akinobu Sugimoto
  • Patent number: 8671799
    Abstract: A quick release device for a pedal includes a spindle, a connecting unit connected to the spindle, and a quick release mechanism connected to the connecting unit. The spindle has a protrusion extending from one end thereof and an annular groove defined in an outer peripheral thereof. The connecting unit has a receiving hole defined therein, a guiding hole defined in a lateral thereof and communicated with the receiving hole, and a retaining hole defined therein and communicated with the receiving hole. The quick release mechanism includes a rod partially received in the guiding hole and a spring biased against the rod toward the receiving hole. In assembly the protrusion engages with the retaining hole and the rod engages with the annular groove.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: March 18, 2014
    Inventor: Chung-l Chen
  • Publication number: 20140069229
    Abstract: A bike extendable crank includes an extendable crank unit. The extendable crank unit includes an immovable crank and a movable crank. The immovable crank has a slide trough therein, a limit groove at one side thereof and a main axle hole above the limit groove. One end of the movable crank has a first pivot hole for connection of a pedal and another end of the movable crank has a second pivot hole for connection a guide axle. The movable crank is slidably received in the slide trough of the immovable crank. The guide axle inserting through the second pivot hole of the movable crank slides in the limit groove of the immovable crank.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 13, 2014
    Inventor: Shun-Jie CHANG
  • Publication number: 20140047947
    Abstract: A bicycle crank assembly is provided with a crank arm that includes a first outer shell, a second outer shell, and a pedal attachment structure. The first outer shell is a one-piece, pressed sheet metal member with the projecting part being a bent portion that defines the first pedal axle opening. The first outer shell has a projecting part projecting from the first outer shell in an axial direction. The first and second outer shells are adhesively attached together to form an interior cavity. The pedal attachment structure includes an abutment face with a recess formed in the abutment face such that the abutment face contacts the first outer shell adjacent the first pedal axle opening and the projecting part of the first outer shell is disposed in the recess of the pedal attachment structure.
    Type: Application
    Filed: October 23, 2013
    Publication date: February 20, 2014
    Applicant: Shimano Inc.
    Inventors: Tetsu NONOSHITA, Masahiro YAMANAKA
  • Publication number: 20140047946
    Abstract: A right crank arm assembly for a bicycle, comprises a right crank arm, a first annular element directly coupled with said crank arm at at least one first coupling portion of said first annular element and at least one second annular element coupled with said crank arm and of a smaller size than said first annular element. The first annular element comprises a toothing that extends radially towards the outside along a primitive circumference having a predetermined diameter. Said at least one first coupling portion is entirely contained in a first area extending radially towards the outside starting from an ideal circumference having a diameter at least equal to ? of said predetermined diameter. Such an annular element constitutes the front sprocket of the crank arm assembly of the present invention and consists of a simple toothed band. Such a front sprocket is particularly light in weight.
    Type: Application
    Filed: September 30, 2013
    Publication date: February 20, 2014
    Applicant: CAMPAGNOLO, S.R.L.
    Inventors: Maurizio VALLE, Paolo PASQUA
  • Publication number: 20140047948
    Abstract: A crankset comprises an axle assembly, a drive-side crankarm, and a non-drive crankarm. The drive-side crankarm is attached at a first end portion thereof to a first end portion of the axle assembly. The non-drive crankarm is attached at a first end portion thereof to a second end portion of the axle assembly. Each one of the crankarms has a plurality of longitudinal holes therein extending between the first and second end portions thereof. The longitudinal holes each extend through an end face of a respective one of the crankarms at the first end portion thereof. The drive-side crankarm is bent inwardly toward the second end portion of the axle assembly after the longitudinal holes are formed therein. Only one of the longitudinal holes of the drive-side crankarm intersects an axle fastener engagement hole that extends through the first end portion of the drive-side crankarm.
    Type: Application
    Filed: October 24, 2013
    Publication date: February 20, 2014
    Inventor: Craig Hawley Edwards
  • Patent number: 8616084
    Abstract: A bicycle crank arm assembly is provided having at least one axle portion, a crank arm mounted on the at least one axle portion, the crank arm having a coupling seat and the axle portion a coupling portion coupled to the coupling seat, the coupling seat and the coupling portion being shaped so as to make a shape coupling to ensure that the crank arm can transmit a torque to the axle portion. Between the crank arm and the axle portion adhesive material is applied. The shape coupling ensures that the crank arm and the axle portion are integral in rotation, whereas the gluing ensures the sealing of the coupling area against corrosion phenomena. The gluing also ensures a predetermined minimum force limit necessary to disassemble the crank arm assembly. The crank arm assembly has a low overall weight, a simple assembly process, and a suitable resistance to disassembling.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: December 31, 2013
    Assignee: Campagnolo S.r.l.
    Inventor: Mario Meggiolan
  • Patent number: 8590421
    Abstract: A bicycle bottom bracket assembly has a shaft having a longitudinal axis X-X, a pair of bearings configured to support the shaft in rotation with respect to a housing box of the bottom bracket assembly provided in a bicycle frame, and a pair of adapter devices configured to be cantilevered with opposite free ends of the box to support the bearings outside of said box. At least one of the adapter devices has at least one first stop element and at least one second stop element arranged on opposite sides with respect to at least one bearing, wherein the first and second stop elements cooperate with the at least one bearing to keep the at least one bearing inside a space having a predetermined axial extension. The bearing's movement is thus limited in the axial direction, providing a fixed reference to determine the chain line of the bottom bracket assembly.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: November 26, 2013
    Assignee: Campagnolo S.r.l.
    Inventors: Mario Meggiolan, Paolo Pasqua
  • Patent number: 8590422
    Abstract: A crank has a connection portion with a connection recess defined therein which has an engaging recess, a reception recess and a reception groove. The engaging recess is located at a closed end of the connection recess and the reception recess is located at an opened end of the connection recess. The reception groove is located between the engaging recess and the reception recess. An axle has an engaging portion at an end thereof and the engaging portion is engaged with the engaging recess. A guide surface is defined in an outer periphery of the cylindrical body. A ring-shaped washer is mounted to the cylindrical body and securely fills into the reception groove and the gap between the axle and the reception recess.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: November 26, 2013
    Inventor: Yu Sheng Kao
  • Patent number: 8590423
    Abstract: A crankset comprises an axle assembly, a removably attached crankarm, and a non-removably attached crankarm. The removably attached crankarm is attached at a first end portion thereof to a first end portion of the axle assembly. The non-removably attached crankarm is attached at a first end portion thereof to a second end portion of the axle assembly. Each one of the crankarms has a plurality of longitudinal holes therein extending between the first and second end portions thereof. The longitudinal holes each extend through an end face of a respective one of the crankarms at the first end portion thereof. The removably attached crankarm is bent inwardly toward the second end portion of the axle assembly after the longitudinal holes are formed therein. Only one of the longitudinal holes of the removably attached crankarm intersects an axle fastener engagement hole that extends through the first end portion of the removably attached crankarm.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: November 26, 2013
    Inventor: Craig Edwards
  • Patent number: 8578816
    Abstract: A connecting and adjusting structure for a crank assembly used in a bicycle contains a first tube of a first connector including a first hollow portion, the first connector including a first bearing seat to receive a first ball bearing, the first bearing seat includes a first engaging tab, a first adjusting rib, and the first tube, a second connector including a second bearing seat to receive a second ball bearing, a dustproof cover, and a retaining ring, the second bearing seat including a second engaging tab, a second adjusting rib, and a second tube, a second crank including a central shank with plural T-shaped teeth and second internal screws, a first crank including a hollow post with a Tee groove fixed to engage with the T-shaped teeth, and a screw is inserted through the hollow post to be screwed with the second internal screws.
    Type: Grant
    Filed: May 29, 2010
    Date of Patent: November 12, 2013
    Inventor: Chang Hui Lin
  • Publication number: 20130283969
    Abstract: A bicycle crank arm is provided with a crank body, a reference member and a sensor. The crank body has a crank axle mounting portion and a pedal mounting portion. The reference member is attached to the crank body. The sensor is attached to at least one of the crank body and the reference member. The sensor is arranged to output a signal based on a distance between the crank body and the reference member.
    Type: Application
    Filed: April 25, 2012
    Publication date: October 31, 2013
    Applicant: Shimano Inc.
    Inventor: Etsuyoshi WATARAI
  • Publication number: 20130283970
    Abstract: A bicycle drive assembly includes a spindle installed in a bicycle, a first crank arm and a second crank arm respectively mounted at two distal ends of the spindle, the first crank arm being rotatable on the axis of the spindle in a first direction of rotation to drive the bicycle forwards, the first crank arm being fastened to the spindle by a screw joint in a second direction of rotation that is the same direction of the first direction of rotation to ensure tight connection between the first crank arm and the spindle when the user is riding the bicycle to pedal the first crank arm.
    Type: Application
    Filed: June 15, 2012
    Publication date: October 31, 2013
    Applicant: Tien Hsin Industries Co., Ltd.
    Inventor: Wen-Feng TSAI
  • Patent number: 8561500
    Abstract: A crankset for a bicycle that includes a first crank, a second crank, a spindle, a bearing, and a preload mechanism. Each of the first crank and the second crank has an end adapted to engage a pedal. The spindle defines an axis and includes a first end that is coupled to the first crank and a second end that is coupled to the second crank. The bearing positioned around the spindle between the first crank and the second crank to permit rotation of the spindle. The preload mechanism is coupled to the spindle between the bearing and the first crank. The preload mechanism includes a washer that extends circumferentially around the spindle and a cam member that is engageable with the washer to move the washer along the axis to preload the bearing.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: October 22, 2013
    Assignee: Specialized Bicycle Components, Inc.
    Inventor: Christopher P. D'Aluisio
  • Patent number: 8549958
    Abstract: This automatic bicycle pedal comprises a pedal body (2) equipped at a first end (5) with first attachment means (7) and at a second end (6) with second attachment means (10), an elastically deformable lever (8) bearing the second attachment means and capable of being deformed between a first position of holding a cleat fixed to the underside of a shoe between the first and second attachment means, and a deformed second position allowing the cleat to be attached and detached in respect of attachment and detachment movements. The deformable lever comprises at least one first deformable zone (12) that can be deformed during attachment and detachment movements and at least one second deformable zone (13) that can be deformed during one of the said attachment and detachment movements, the said first and second zones having different stiffnesses.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: October 8, 2013
    Assignee: Look Cycle International
    Inventors: Julien Bouchez, Fabien Delangue
  • Publication number: 20130247712
    Abstract: It is a kind of crank mechanism that consists of a crank and a link. There are two key parts: one is a crank, it is to do a revolving motion; another is a link, it is to draw the crank. The purpose is to change the route of motion.
    Type: Application
    Filed: March 22, 2012
    Publication date: September 26, 2013
    Inventor: CHUN CHIEH CHEN
  • Publication number: 20130233092
    Abstract: A bicycle crank arm comprises a crank body, a sensor support member and a power sensing device. The crank body includes a crank axle mounting portion and a pedal mounting portion. The sensor support member is disposed in a cavity of the crank body and attached to the crank body. The power sensing device is supported on the sensor support member.
    Type: Application
    Filed: April 25, 2012
    Publication date: September 12, 2013
    Applicant: Shimano Inc.
    Inventors: Toshio Tetsuka, Etsuyoshi Watarai
  • Publication number: 20130233126
    Abstract: A bicycle crank arm comprises a first crank arm member having a first sensor-mounting surface and a second crank arm member having a second sensor-mounting surface. A first sensor is mounted to the first sensor-mounting surface, and a second sensor mounted to the second sensor-mounting surface.
    Type: Application
    Filed: April 20, 2012
    Publication date: September 12, 2013
    Applicant: SHIMANO, INC.
    Inventor: Toshio Tetsuka