Guide Roll Spring Biased In Belt-tensioning Direction Patents (Class 474/135)
  • Patent number: 10309498
    Abstract: A belt tensioner (1) for a generator belt drive of an internal combustion engine is provided. The belt tensioner includes a tensioning arm (5) with a tensioning roller (7) mounted thereon, and a tensioning spring which acts on the tensioning arm and is intended for pretensioning the belt (11) is designed for mounting onto the generator (2) and, in the mounted state of the belt drive, engages annularly around the belt pulley (6) of the generator and encompasses the belt in a plane which is spaced apart from the plane of the belt and runs on the far side of the belt plane with respect to the generator. The belt tensioner has an open ring-shaped construction, and therefore, in the mounted state of the belt tensioner on the generator, the belt can be mounted axially through the ring opening (9, 10) in the belt tensioner onto the belt pulley of the generator.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: June 4, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Bernd Hartmann, Zoran Maricic, Alexander Weidner, Steffen Gundel
  • Patent number: 10295025
    Abstract: A belt transmission system comprises: a first pulley; a second pulley; a belt; and an automatic tensioner having a first tension pulley and a second tension pulley applying tension to a portion of the belt located at a tension side and a portion of the belt located at a slack side of the belt, and an arm. Force from the belt makes the first tension pulley and the second tension pulley rotate in the same direction. When the first tension pulley rotates in a direction tensioning the belt, the second tension pulley also rotates in a direction tensioning the belt.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: May 21, 2019
    Assignee: Bando Chemical Industries, Ltd.
    Inventor: Keisuke Takenaka
  • Patent number: 10281014
    Abstract: The present invention relates to an auto-tensioner containing a base having a cylindrical part, a rotating member supported rotatably to the base, a pulley provided at the rotating member, a friction member sandwiched between the cylindrical part and the rotating member, and a coil spring locked to the friction member and the base and disposed in a state of being compressed in an axial direction, thereby biasing the rotating member in one direction, in which the friction member has an arcuate surface capable of sliding along the cylindrical part, a first locking part located further toward the one direction side than the arcuate surface in a circumferential direction of the cylindrical part and locked to the rotating member, and a second locking part locked to one end of the coil spring.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: May 7, 2019
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Satoshi Oishi, Koji Nishiyama, Tetsuo Yoneda
  • Patent number: 10094451
    Abstract: A tensioner is disclosed. The tensioner includes an arm, a tong, and a clutch. The arm is rotatable about a first axis in an opposite direction. The arm includes at least one stopping element. The tong is selectively engaged with the at least one stopping element of the arm. The arm is substantially prevented from rotating in the opposite direction if the tong is engaged with the at least one stopping element. The clutch is operatively coupled to the arm. The clutch includes an engaged and a disengaged position. If the clutch is in the engaged position, then the tong is engaged with the at least one stopping element of the arm.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: October 9, 2018
    Assignee: Dayco IP Holdings, LLC
    Inventor: Lingyuan Kong
  • Patent number: 9982721
    Abstract: In an aspect, the invention relates to a decoupler that is positionable between a shaft (eg. for an alternator) and an endless power transmitting element (eg. a belt) on an engine. The decoupler includes a hub that mounts to the shaft, and a pulley that engages the endless power transmitting element, an isolation spring between the hub and the shaft. The decoupler provides at least a selected damping torque between the hub and the pulley.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: May 29, 2018
    Assignee: Litens Automotive Partnership
    Inventors: John R. Antchak, Jun Xu, Patrick Marion, Lucas Wilson, Justin Boudreau, Gary J. Spicer
  • Patent number: 9982761
    Abstract: In an aspect, a tensioner for tensioning an endless drive member on an engine, is provided, comprising a base that mounts to the engine, a tensioner arm that is pivotally connected to the base for pivotal movement about a tensioner arm axis, a pulley rotatably mounted to the tensioner arm for rotation about a pulley axis that is spaced from the tensioner arm axis, a tensioner spring and a damping member. The tensioner spring is positioned to urge the tensioner arm into an endless drive member. The spring has a first helical end and a second helical end. The first helical end is positioned to transfer force with a first spring end force transfer surface on the base and the second helical end is positioned to transfer force with a second spring end force transfer surface on the tensioner arm. The damping member is positioned in a surrounding relationship with the tensioner spring.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: May 29, 2018
    Assignee: Litens Automotive Partnership
    Inventors: Wei Ma, Kacy E. Joseph
  • Patent number: 9874267
    Abstract: A tensioner (10) for an endless loop power transmission member can induce a piston (12) operably engageable with an endless loop power transmission member, and a cylinder (14) guiding include a piston (12) for sliding coaxial movement in a direction of the endless loop power transmission member. The piston (12) and cylinder (14) defining an oil reservoir or pressure chamber (26) for receiving hydraulic fluid. A bearing (28) has bearing balls (30) located in a counter bore (32) coaxial with cylinder bore (34). The counter bore (32) has a steep taper (36) on which the bearing balls (30) ride. As the cylinder (14) moves in an extending direction, the bearing balls (30) move out of the counter bore (32) allowing free extending movement of the cylinder (14). As the cylinder (14) moves in a retracting direction, the bearing balls (30) are driven down into the steep taper (36) preventing the cylinder (14) from retracting.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: January 23, 2018
    Assignee: BORGWARNER INC.
    Inventors: Mark M. Wigsten, Dale N. Smith
  • Patent number: 9863511
    Abstract: The present disclosure provides a belt auto-tensioner that automatically adjusts tension of a belt for rotational force transmission between an engine and auxiliary machinery components, the belt auto-tensioner comprising: an upper cover that is provided with a pulley being in contact with the belt and has a receiving space provided so as to be spaced apart from the pulley; a tensioner body that is inserted into the receiving space, and provides friction attenuation to the upper cover when the upper cover rotates in a direction opposite to a direction of tension applying engagement by the tension of the belt; and a friction unit that is installed on an inner surface of the receiving space, and is formed so as to rub against an outer surface of the tensioner body when the upper cover rotates.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: January 9, 2018
    Assignee: Hyundai Motor Company
    Inventor: Je Yong Yoon
  • Patent number: 9841087
    Abstract: A belt tensioner for a generator belt drive of an internal combustion engine, is provided having: —an annular housing part which is secured on the generator housing so as to enclose the generator shaft, —an annular tensioning part which is mounted on the housing part in a pivotal manner about the generator shaft, —a single tension roller which is mounted on the tensioning part and pretensions the belt, —and a spring which is clamped between the housing part and the tensioning part and which applies a torque to the tensioning part in order to generate the belt tension. The spring should be a bow spring which extends parallel to the belt plane (?) and circumferentially and completely outside of a pivoting range of the tension roller.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: December 12, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Bernd Hartmann, Zoran Maricic, Alexander Weidner
  • Patent number: 9715194
    Abstract: Drive belt systems and methods thereof are disclosed. Drive belt systems and methods thereof include driving a continuous belt around a drive pulley member and an idler pulley member by the drive pulley member and transporting a transport unit and/or reciprocating carriage unit coupled to the continuous belt in a first direction away from the drive pulley member. Drive belt systems and methods thereof also include applying at least a force to the belt in a traverse direction thereto to direct a portion of the belt about the drive pulley member by a belt stretch management apparatus coupled to the transport unit and/or reciprocating carriage unit.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: July 25, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Matt G Driggers
  • Patent number: 9618099
    Abstract: A tensioner comprising a shaft, a base, a pivot arm pivotally engaged with the base, a pulley journalled to the pivot arm, a first spring urging a first damping member into a frictional engagement with the pivot arm, the first spring engaged with the base, the first damping member imparting a damping force greater in a first pivot arm direction than in a second pivot arm direction, and a second spring disposed in the pivot arm and urging a second damping member into a frictional engagement with a base surface, the base surface comprises an arcuate form having a radius that is variable from a minimum value to a maximum value.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: April 11, 2017
    Assignee: GATES CORPORATION
    Inventors: Peter Ward, John Harvey, Oliver Stegelmann
  • Patent number: 9599934
    Abstract: An image forming apparatus includes a toner image forming device to form a toner image on a rotatable toner image bearer, a looped belt to carry a recording medium, a support roller to rotate the belt, a pressing member to press the belt against the toner image bearer, a transfer electric field generator to form an electric field to transfer the toner image onto the recording medium, and a contact member to contact an end surface of the belt as the belt moves to one side in a belt width direction. The belt includes a first portion pressed against the toner image bearer by the pressing member and a second portion adjoining the first portion. A relative position of the support roller relative to the toner image bearer and the pressing member is determined such that the second portion of the belt contacts the toner image bearer.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: March 21, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Hozumi, Naomi Sugimoto, Kazuchika Saeki, Yasufumi Takahashi, Naoki Iwaya, Masaharu Furuya
  • Patent number: 9394977
    Abstract: A tensioner is disclosed that may be part of a power system where the tensioner provides tension to an endless power transmitting element such as a belt, chain, or other continuous loop. The tensioner has an arm that is rotatable about a first axis and includes an arm arbor having a window therethrough, a bushing having a protrusion and being positioned adjacent the arm arbor with the protrusion received in the arm arbor's window, and a spring coupled to the arm urging the arm to rotate about the first axis into tensioning engagement with a power transmitting element. The spring is positioned where it can radially expand into contact with the protrusion of the bushing as the arm is rotated in a direction opposite the direction of tensioning engagement such that the bushing is urged radially outward relative to the arm arbor to provide frictional damping.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 19, 2016
    Assignee: DAYCO IP HOLDINGS, LLC
    Inventors: Kevin Gerard Dutil, Anthony Eugene Lannutti
  • Patent number: 9377089
    Abstract: A chain tensioning device is basically provided with a main body, a chain guide, a rotary fluid damper unit and a rotational resistance adjustment device. The main body is configured to be mounted to a bicycle. The chain guide is pivotally coupled to the main body to rotate around a rotational axis with respect to the main body. The rotary fluid damper unit is operatively connected between the main body and the chain guide to provide rotational resistance to the chain guide around the rotational axis. The rotational resistance adjustment device is operatively connected to the rotary fluid damper unit to change a rotational resistance setting of the rotary fluid damper unit with the rotational resistance adjustment device in an operative state.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: June 28, 2016
    Assignee: Shimano Inc.
    Inventors: Sota Yamaguchi, Toyoto Shirai, Masanori Taniguchi
  • Patent number: 9377090
    Abstract: A tensioner assembly that includes a base, an arm, an opening spring (i.e., a torsion spring that opens or radially expands with increasing torque applied thereto), a spring reaction member, and a pivot bushing. The tensioner assembly is configured to orient various loads in predetermined directions. For example, a spring load can be oriented to counteract a hub load to reduce a bushing load that acts on the pivot bushing. As another example, a spring reaction force exerted by the spring reaction member can be employed by a damping mechanism to generate a grounding force that is parallel to the spring reaction force and is directed to intersect an axis about which the arm pivots relative to the base. A tensioner assembly having improved assembly characteristics is also provided.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: June 28, 2016
    Assignee: Litens Automotive Partnership
    Inventors: Wei Ma, Gerald J. Hamers
  • Patent number: 9249866
    Abstract: Belt tensioners for a power transmission belt system are disclosed. The belt tensioners have a support member, an arm, a torsion spring operatively coupled therebetween, and an improved damping assembly. The arm includes a housing section pivotally mounted to the support member for rotation about the arm. This housing section has a rub surface against which the damper assembly is seated. The damper assembly has a body having a friction surface frictionally contacting the rub surface of the arm and a damper spring integrated with the body. The improvement of the damper assembly is that the rub surface of the arm includes a trough concentric about the axis of rotation and the friction surface of the body includes an annular protrusion seated in the trough.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 2, 2016
    Assignee: DAYCO IP HOLDINGS, LLC
    Inventor: Anthony Eugene Lannutti
  • Patent number: 9206888
    Abstract: An auto-tensioner includes: a stationary member having a first cylindrical portion; a rotatable member having a second cylindrical portion at least partially overlapping the first cylindrical portion in a radial direction; and a drainage mechanism provided at a boundary part of the first and second cylindrical portions, including a water inlet configured by a gap between an outer peripheral surface of the first cylindrical portion and an outer peripheral surface of the second cylindrical portion and being open along a peripheral direction, a water passage which is configured by a gap between a water collecting groove formed along the peripheral direction in the outer peripheral surface of one of the two cylindrical portions and the other cylindrical portion, and communicates with the water inlet, and at least one drainage port formed in a peripheral wall on an outside in the radial direction of the water passage.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: December 8, 2015
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Tetsuo Yoneda, Katsuya Imai
  • Patent number: 9121474
    Abstract: Systems and methods for an engine drive system are described herein. In one example, the system includes a camshaft, a crankshaft, and an accessory drive. The system may include a first chain coupling the camshaft and crankshaft in a first plane, and a second chain coupling the accessory drive and crankshaft in a second plane non-planar to the first plane. The system may further include a chain guide including a first surface guidingly contacting the first chain and a second surface guidingly contacting the second chain.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: September 1, 2015
    Assignee: Ford Global Technologies, LLC
    Inventor: Tom Suchecki
  • Patent number: 9103411
    Abstract: A belt tensioner for attaching to a generator of an auxiliary unit drive of an internal combustion engine, including a tensioner housing mounted on the generator having a cavity, two tensioning rollers which act with a pretensioning force on the belt in a direction of revolution upstream and downstream of the pulley of the generator, a bow spring which produces the pretensioning force accommodated in the cavity, a circular-arc-shaped tensioning lever mounted in the cavity movable in a plane of the circular arc and which is acted on by the force of the bow springs and supports one of the tensioning rollers, and a sliding bearing for the tensioning lever, which sliding bearing extends at the inlet of the cavity. The tensioning lever has a steel core with an aluminum sheath which completely encloses the part of the steel core which extends outside the cavity and inside the sliding bearing.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: August 11, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Benjamin Wolf, Roland Arneth
  • Patent number: 9046149
    Abstract: Starter-alternator assembly including a poly-V belt comprising a body made of elastomeric material, a plurality of filiform resistant inserts longitudinally embedded in the body, and a coupling portion integrally connected to the body and comprising a plurality of V-shaped ribs set alongside one another and alternating with V-shaped grooves. The belt has a dynamic modulus, with a tensile force pre-set at 600 N at a frequency 15 Hz, that after 10 000 cycles is higher than 110 000 N/rib/branch, and is advantageously made with resistant inserts obtained from at least one first fiber material and one second fiber material.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: June 2, 2015
    Assignee: Dayco Europe S.R.L.
    Inventors: Carlo Trappolini, Marco Di Meco
  • Patent number: 9017197
    Abstract: A hydraulic damper for providing fluid damping to a tensioner in a drive system that includes a damper cup, which is mounted to the tensioner and configured to rotate about a central axle in tandem with the tensioner, an end plate having an outer face and an inner face, which is attached to the damper cup forming a fluid chamber, a peg attached to the end plate and extending away from the inner face and toward the damping cup, a damping fluid, which is contained within the fluid chamber, a plurality of shear plates housed within the fluid chamber comprising alternating fixed plates engaged with a fixed component of the tensioner and rotatable plates engaged with a rotatable component of the tensioner where the peg extends through openings in each of the shear plates allowing for rotation of the rotatable plate with the rotation of the peg.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: April 28, 2015
    Assignee: Dayco IP Holdings, LLC
    Inventors: Randy C. Foster, Randy Diefenderfer, Jeffrey Allen Pendergrass
  • Patent number: 9005061
    Abstract: A clamping device (1) of a traction mechanism drive, comprising a fixedly positioned base part (2), with which a pivot arm (3) is associated. The pivot arm (3) can be pivoted via a rotary bearing, consisting of a hub (9), a pin (5) of the base part (2) and a sliding bearing (10). A spring means (12) inserted between the base part (2) and the pivot arm (3) exerts an expansion force and effects a non-positive support of a tensioning roller (11) that is connected to the pivot arm (3) on a traction mechanism. In order to damp adjusting movements of the pivot arm (3), a damping device (13) is provided, which comprises two separate spring-loaded friction elements. For this purpose, a friction disk (14) is supported with form fit on the supporting disk (8) connected to the pin (5) of the base part (2) and with friction fit on the pivot arm (3).
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: April 14, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Thorsten Liebel, Bernd Hartmann
  • Patent number: 9005060
    Abstract: A derailleur 10, for moving a chain 60 to different sized sprockets arranged small to large in a sprocket nest 101 is disclosed. The derailleur 10 has a pivot guide feed arm 11 for directing the chain 60 onto one of multiple sprockets within the sprocket nest 101. The pivot guide feed arm 11 is rotatably mounted at a pivot end on an angular pivot pin 12 and when the pivot guide feed arm 11 rotates about the pivot pin 12 an opposite chain guide end of the pivot guide feed arm 11 traces a path substantially parallel to a tangent to the outer periphery of the sprocket nest 101. The movement of the pivot guide feed arm 11 is mechanically driven by a user command and is preferably moved by a connected rod or wire or cable 109.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: April 14, 2015
    Assignee: Zike, LLC
    Inventors: Nathan Anthony Scolari, George Robert Reiter
  • Patent number: 8968128
    Abstract: A tensioning device (2) is provided for a starter generator drive belt of an internal combustion engine and a starter generator (1) equipped with such a tensioning device. It includes a tensioning housing (8, 8a, 8b) with two belt pulleys (6, 7) and a bearing support (9) fastened at the machine housing (3) of the starter generator, on which the tensioning housing is pivotally supported via a friction bearing.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: March 3, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Benjamin Wolf, Stefan Mack, Roland Arneth, Bernd Hartmann, Christian Hauck, Martin Rauch
  • Publication number: 20150031485
    Abstract: A tensioner is disclosed that may be part of a power system where the tensioner provides tension to an endless power transmitting element such as a belt, chain, or other continuous loop. The tensioner has an arm that is rotatable about a first axis. The tensioner also includes an outer spring and at least one inner spring. The outer spring has an outer coil that defines an outer diameter. The inner spring has an inner coil that defines an inner diameter. The inner diameter of the inner coil is less than the outer diameter of the outer coil such that at least a portion of the inner spring is received by the outer spring. The outer spring and the inner spring both urge the arm to rotate about the first axis and into tensioning engagement with the power transmitting element.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 29, 2015
    Applicant: DAYCO IP HOLDINGS, LLC
    Inventor: James Kevin Lindstrom
  • Patent number: 8932163
    Abstract: A tensioning system including a base and an arm pivotally coupled to the base, the arm having an engagement surface thereon. The system further includes a biasing mechanism operatively coupled to the arm to bias the arm relative to the base. The biasing mechanism includes a coil spring having a plurality of coils, at least some of the coils or parts thereof being configured to switch between an activated state and deactivated state based upon a position of the arm relative to the base.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: January 13, 2015
    Assignee: Dayco IP Holdings, LLC
    Inventors: Zachary Lee Fittro, Carter Ray Serage, David Mathias Bednar, Jr.
  • Patent number: 8926462
    Abstract: A tensioner comprising a base, a shaft connected to the base, an eccentric adjuster coaxially engaged with the shaft, an arm pivotally engaged with the shaft, a pulley journalled to the arm, a torsion spring engaged between the arm and the base, the arm comprising a first receiving portion and a second receiving portion disposed axially opposite from the first receiving portion, a first damping member disposed between the arm and the base, the first damping member frictionally engaged with the base and engaged with first receiving portion, a second damping member disposed between the arm and the eccentric adjuster having a member engaged with the second receiving portion, and a biasing member disposed between the first damping member and the arm for applying a normal force to the first damping member and to the second damping member.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: January 6, 2015
    Assignee: The Gates Corporation
    Inventors: Peter Ward, Eva Bernert, Casper Haenbeukers, John T Harvey, Fraser Lacy
  • Patent number: 8888626
    Abstract: According to aspects illustrated herein, there are provided methods and systems for applying continuous tension on a belt/cable system. The automatic tensioning system includes a pivot mechanism and a locking mechanism. The pivot mechanism includes a pivot arm extending between an idler pulley and a pivot point. The idler pulley is mateable with a belt/cable. The belt/cable is routed about the idler pulley. The idler pulley rotates by the movement of the belt/cable, and the pivot arm pivots in an opposing direction from the belt/cable at the pivot point to apply continuous tension to the belt/cable as the pivot arm pivots. The locking mechanism is in communication with the pivot arm to secure the pivot arm in position, and the locking mechanism is adjustable.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: November 18, 2014
    Assignee: Xerox Corporation
    Inventors: Joannes N. M. deJong, Lloyd A. Williams, Matthew Dondiego
  • Patent number: 8888627
    Abstract: A tensioner for a power transmitting element in a drive system is disclosed. The tensioner comprises a threaded shaft that includes threading and at least one non-threaded end and defines a pivot axis, an arm rotatable about the pivot axis on the non-threaded end of the threaded shaft, a torsion element biasing the arm to rotate about the pivot axis, a threaded nut threadedly connected to the threaded shaft. The threaded nut has a first surface in frictional engagement with the arm and is rotatable about the threading. The threaded nut acts as a one-way limited slip clutch to provide asymmetric damping to the arm and controlled resisting torque in a variable relative proportion compared to the mean torque and returning torque.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: November 18, 2014
    Assignee: Dayco IP Holdings, LLC
    Inventor: Robert J. Crist
  • Publication number: 20140315673
    Abstract: A spring, especially for use in a belt tensioning device, with a number of at least 1.25 and at a maximum 2.5 coils, which extend around a spring axis A8, wherein a first coil end 42 has an axial offset Va relative to a first coil region 48, arranged at an angle of 360° around the spring axis A8, and wherein a second coil end 49 has an radial offset Vr relative to a second coil region 50 arranged at an angle of 360° around the spring axis A8. A belt tensioning device and an assembly with such a belt tensioning device include such a spring.
    Type: Application
    Filed: March 13, 2014
    Publication date: October 23, 2014
    Applicant: MUHR UND BENDER KG
    Inventors: Matthias Zacker, Joachim Jud, Simon Pfeifer, Manfred Jung
  • Patent number: 8852042
    Abstract: What is described is an improved asymmetric damping apparatus which utilizes a flatwire spring to provide both bias in the tensioning direction for a belt tensioner and asymmetric damping against sudden rotational movement of the belt tensioner in the winding direction.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: October 7, 2014
    Assignee: Dayco IP Holdings, LLC
    Inventor: Richard John Meckstroth
  • Publication number: 20140287859
    Abstract: In an aspect, a tensioner for an endless drive member, comprising a shaft and base that are mountable to be stationary relative to an engine, a tensioner arm that is pivotable relative to the shaft about a tensioner arm axis, a pulley on the tensioner arm rotatable about a pulley axis that is offset from the tensioner arm axis, and that is engageable with an endless drive member, a bushing that is positioned radially between the pulley and the tensioner arm to support the pulley radially during relative rotation between the pulley and the tensioner arm, a tensioner spring that is positioned to urge the tensioner arm towards a free arm position, a damping element that engages the tensioner arm and that is engaged by a plurality of axially spaced segments of the tensioner spring.
    Type: Application
    Filed: April 24, 2014
    Publication date: September 25, 2014
    Inventors: Marek Frankowski, Dino Farronato, Rares I. Comsa, Frank C. Schimpl
  • Publication number: 20140287860
    Abstract: In an aspect, a tensioner is provided, comprising a base, a tensioner arm, a tensioner spring, a wheel, and a damping structure. The base is mountable to an engine. The tensioner arm is pivotally connected to the base for movement about a tensioner arm axis. The tensioner spring is connected between the base and the tensioner arm and is positioned to urge the tensioner arm towards a free arm position. The wheel is rotatably mounted to the tensioner arm and is engageable with an endless drive member. A friction surface is provided on one of the base and the tensioner arm. The damping structure is provided on the other of the base and the tensioner arm and engages the friction surface to generate friction during rotation of the tensioner arm. The damping structure includes a sleeve that contains at least one aperture and a damping element that contains at least one lug that engages the at least one aperture with no circumferential clearance therebetween.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 25, 2014
    Applicant: Litens Automotive Partnership
    Inventors: Wei Ma, Gerald J. Hamers
  • Patent number: 8840495
    Abstract: In one aspect, the invention is directed to a belt tensioner for tensioning a belt, comprising a pivot shaft that is fixedly mountable with respect to an engine block of an engine, a tensioner arm rotatably mounted to the pivot shaft for pivoting about a tensioner arm axis in a first direction and in an opposing second direction, a pulley rotatably mounted to the tensioner arm for rotation about a pulley axis, and a tensioner spring positioned to bias the tensioner arm in the first direction, wherein the tensioner spring has a first end and a second end, wherein the first end is engaged with the tensioner arm, and a micro adjustment mechanism that is operatively connected to control the position of the second end of the tensioner spring so as to control the tension in the tensioner spring.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: September 23, 2014
    Assignee: Litens Automotive Partnership
    Inventors: Rares I. Comsa, Flaviu V. Dinca, Jacek Stepniak, Gary J. Spicer
  • Publication number: 20140274510
    Abstract: A tensioner is disclosed that may be part of a power system where the tensioner provides tension to an endless power transmitting element such as a belt, chain, or other continuous loop. The tensioner has an arm that is rotatable about a first axis and includes an arm arbor having a window therethrough, a bushing having a protrusion and being positioned adjacent the arm arbor with the protrusion received in the arm arbor's window, and a spring coupled to the arm urging the arm to rotate about the first axis into tensioning engagement with a power transmitting element. The spring is positioned where it can radially expand into contact with the protrusion of the bushing as the arm is rotated in a direction opposite the direction of tensioning engagement such that the bushing is urged radially outward relative to the arm arbor to provide frictional damping.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Dayco IP Holdings, LLC
    Inventors: Kevin Gerard Dutil, Anthony Eugene Lannutti
  • Publication number: 20140274511
    Abstract: Belt tensioners for a power transmission belt system are disclosed. The belt tensioners have a support member, an arm, a torsion spring operatively coupled therebetween, and an improved damping assembly. The arm includes a housing section pivotally mounted to the support member for rotation about the arm. This housing section has a rub surface against which the damper assembly is seated. The damper assembly has a body having a friction surface frictionally contacting the rub surface of the arm and a damper spring integrated with the body. The improvement of the damper assembly is that the rub surface of the arm includes a trough concentric about the axis of rotation and the friction surface of the body includes an annular protrusion seated in the trough.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Dayco IP Holdings, LLC
    Inventor: Anthony Eugene Lannutti
  • Publication number: 20140256488
    Abstract: A belt tensioner for attaching to a generator of an auxiliary unit drive of an internal combustion engine, including a tensioner housing mounted on the generator having a cavity, two tensioning rollers which act with a pretensioning force on the belt in a direction of revolution upstream and downstream of the pulley of the generator, a bow spring which produces the pretensioning force accommodated in the cavity, a circular-arc-shaped tensioning lever mounted in the cavity movable in a plane of the circular arc and which is acted on by the force of the bow springs and supports one of the tensioning rollers, and a sliding bearing for the tensioning lever, which sliding bearing extends at the inlet of the cavity. The tensioning lever has a steel core with an aluminum sheath which completely encloses the part of the steel core which extends outside the cavity and inside the sliding bearing.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 11, 2014
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Benjamin Wolf, Roland Arneth
  • Patent number: 8821328
    Abstract: A belt tensioning device for a belt drive which comprises a driving machine with a driving belt pulley drivable by a driveshaft around a driving axis, and a plurality of further belt pulleys and with an infinite belt which is wrapped around the driving belt pulley and the further belt pulleys wherein the belt tensioning device comprises a housing in which two tensioning arms are supported so as to be pivotable around a common pivot axis, in which tensioning arms there are supported tensioning rollers with axes of rotation extending parallel to the driving axis, wherein the tensioning arms are supported relative to one another by spring means, wherein, with the driving belt pulley mounted at the driving machine, the housing can be mounted in that, in an annular region surrounding the driveshaft of the driving belt pulley, the housing is contact-free relative to the driving machine.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: September 2, 2014
    Assignee: Muhr und Bender KG
    Inventors: Joachim Jud, Manfred Jung
  • Publication number: 20140235388
    Abstract: A mechanism for adjusting tension of a belt of a bicycle includes a link pivotably connected between an arm and a frame. The arm has a tension adjustment bolt connected to one end thereof and the frame has a guide wheel connected thereto. An extension spring is between the arm and the frame. The link, the arm, the extension spring and the frame form a four-link mechanism is cooperated with the extension spring to allow the guide wheel to consistently press the belt to keep the belt with a proper tension. When the bolt is unscrewed, the whole mechanism is moved downward from the belt so that the replacement of the rear wheel and the belt is easy and convenient.
    Type: Application
    Filed: February 21, 2013
    Publication date: August 21, 2014
    Inventor: WEN-PIN CHANG
  • Publication number: 20140213400
    Abstract: A belt system comprising a driver pulley, a driven pulley, a belt trained between the driver pulley and the driven pulley, a belt tensioning device engaged with the belt, a first idler engaged with the belt between the driver pulley and the driven pulley, a second idler engaged with the belt, the second idler engaged with the belt span immediately upstream of the driver pulley, the second idler comprising an arm journalled to a base, the arm urged to load the belt by a torsion spring, the arm having an effective length of less than 6 mm, and the torsion spring having a spring rate of approximately 0.128 mm/deg.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Inventor: Juergen Hallen
  • Patent number: 8734279
    Abstract: A tensioner comprising a sleeve, an adjuster cooperatively engaged with an inner surface of the sleeve, a pivot arm pivotally engaged with the sleeve, a pulley journalled to the pivot arm, a torsion spring engaged with the sleeve for urging the pivot arm, an elastomeric damping ring connected to the arm and in compressive frictional contact between the sleeve and the arm whereby a tangential friction force damps a pivot arm movement, the elastomeric damping ring exerting a radial force on the sleeve, and a retaining member connected to the adjuster and cooperatively engaged with the sleeve whereby the adjuster and sleeve are kept in a predetermined relation.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: May 27, 2014
    Assignee: Gates Corporation
    Inventors: Peter Ward, Juergen Hallen, Holger Schever
  • Patent number: 8702543
    Abstract: A tensioner for tensioning a belt that includes a support housing, an arm pivotably attached to the support housing, a spring operatively connected to the support housing and the arm, and a deflectable armplate seated on the arm and deflected into engagement with the support housing to provide an axial force that clamps the arm and the support housing together without axially compressing the spring. The spring biases the arm to pivot relative to the support housing.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: April 22, 2014
    Assignee: Dayco IP Holding, LLC
    Inventors: James G. Quintus, Edward A. Rammel
  • Patent number: 8690718
    Abstract: A tightener for a belt drive cooperates with the belt in the presence of oil, and has a pin with a first axis; a base plate integral with and substantially perpendicular to the pin; a cam arm connected in a rotary manner to the pin and movable with respect to the base plate; a contact member carried by the cam arm; and an elastic member connected to the cam arm to activate the contact member against the belt. The tightener also has a friction member made of oil-resistant material and axially supporting the cam arm on the base plate; and axial elastic means for loading the friction member against the base plate.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: April 8, 2014
    Assignee: Dayco Europe S.r.l. con Unico Socio
    Inventor: Michele Cantatore
  • Patent number: 8684872
    Abstract: A tensioner for tensioning flexible drives employs an extruded shaft which can provide a relatively complex cross sectional shape to provide anti-rotation features to inhibit rotation of a pivot bushing located on the shaft. The pivot bushing has a frustoconical outer shape, as does the pivot surface of the hub of the tensioner arm which pivots on the pivot bushing. A dampening spring urges the pivot bushing towards the tensioner arm's pivot surface, providing for wear compensation and for dampening. The degree of dampening which is generated between the pivot bushing and the tensioner hub can be selected in a variety of manners: by varying the spring force; by changing the effective contact surface area between the pivot bushing and pivot surface; and/or by changing the coefficient of friction between the pivot bushing and the pivot surface.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: April 1, 2014
    Assignee: Litens Automotive Partnership
    Inventors: Hubertus G. Mevissen, James W. Dell
  • Patent number: 8688306
    Abstract: Aspects of the present disclosure relate generally to limiting the use of an autonomous or semi-autonomous vehicle by particular occupants based on permission data. More specifically, permission data may include destinations, routes, and/or other information that is predefined or set by a third party. The vehicle may then access the permission data in order to transport the particular occupant to the predefined destination, for example, without deviation from the predefined route. The vehicle may drop the particular occupant off at the destination and may wait until the passenger is ready to move to another predefined destination. The permission data may be used to limit the ability of the particular occupant to change the route of the vehicle completely or by some maximum deviation value. For example, the vehicle may be able to deviate from the route up to a particular distance from or along the route.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: April 1, 2014
    Assignee: Google Inc.
    Inventors: Philip Nemec, Christopher Paul Urmson, Bradley Templeton, Nathaniel Fairfield, Anthony Scott Levandowski
  • Publication number: 20140051534
    Abstract: The belt of a pump jack connects an output pulley of a motor and an input drive pulley of the transmission and is tensioned by an idler roller with end flanges which is spring tensioned into engagement with the belt. The idler roller is carried on a base frame adjustable longitudinally and transversely to the belt on a concrete support base. An upstanding support is carried on the base frame including a platform carrying bearings for a pivotally mounted arm extending to the roller for supporting the roller axis transverse to the belt and a spring connects to the arm for applying a force to the arm to press the roller against the belt. The upstanding support and the pivotally mounted arm are all arranged one side of the idler roller so as to present the idler roller to the belt from one side of the belt.
    Type: Application
    Filed: August 16, 2012
    Publication date: February 20, 2014
    Inventors: Sheldon Wiebe, Garry Wiebe
  • Patent number: 8651988
    Abstract: A tensioning device for a traction element, such as a belt, band or chain, is provided having a tensioning arm (1) arranged on a machine part on which an idler pulley or deflection pulley for the traction element is rotatably mounted via a roller bearing (2), and includes a protective cap (15) which is in a frictionally locking or positively locking manner on the idler pulley and covers the bearing region of the idler pulley. The idler pulley is a sheet-metal sheave (16) and includes, for securing the protective cap (15), a snap-in groove (17) which is formed in an end region of the sheet-metal sheave (16) which has an outwardly conical shape, with the end region having a thickness (A) which is less than a thickness (E) of the sheet metal of the sheet-metal sheave (16).
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: February 18, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Benoit Kapfer, Jacky Herrmann, Constant Einsetler
  • Publication number: 20140038758
    Abstract: A tensioner includes a movable member, a fixed member, biasing means provided between the fixed member and the movable member and configured to bias the movable member along a pressing direction, and a damping member provided between the fixed member and the movable member and configured to damp the pivoting movement of the movable member. The damping member is made of a resin composition whose sliding friction force damps the pivoting movement of the movable member, and a contact angle between the resin composition and water is 70° to 100°, both inclusive.
    Type: Application
    Filed: October 11, 2013
    Publication date: February 6, 2014
    Inventors: Saki JINDAI, Koji FUKUDA
  • Publication number: 20140031157
    Abstract: A tensioner assembly includes a pulley arm pivotable about a pivot shaft, and a tension pulley mounted on the pulley arm at its end remote from the pivot shaft and pressed against a belt to keep the tension of the belt. The tension pulley is rotatably mounted around a base portion of the pulley arm through a rolling bearing with the inner surface and axial rear end surface of the bearing inner race in contact with the outer peripheral surface of the base portion and an end surface of a shoulder of the base portion, respectively. The base portion has an axial through hole formed with an internal thread on its inner surface. A support bolt is threaded into the through hole from the axial front end to press the rolling bearing against the end surface of the shoulder. The internal thread has an axial front end located in the vicinity of, or axially rearwardly of, the end surface of the shoulder.
    Type: Application
    Filed: July 22, 2013
    Publication date: January 30, 2014
    Applicant: NTN Corporation
    Inventors: Takehiro TAKANO, Seiji SATO
  • Patent number: RE46019
    Abstract: A tensioner including a support structure defining a pivot axis, an arm coupled to the support structure for rotation about the pivot axis, and a damping mechanism. The arm includes a cup having the damping mechanism seated therein. The damping mechanism includes a first tensioner component that is generally cup-shaped and has first ramp features on the rim thereof, a second tensioner component having second ramp features, and a damper spring coupling the first tensioner component to the second tensioner component. The first tensioner component is rotatable with the arm and the second tensioner component is non-rotatable. The damper mechanism has the first ramp features aligned with the second ramp features and rotation of the first tensioner component in a first direction moves the first ramp features relative to the second ramp features and translates the first tensioner component into damping engagement with the arm.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: May 31, 2016
    Assignee: DAYCO IP HOLDINGS, LLC
    Inventor: Anthony E. Lannutti