Patents by Inventor Alexander Serkh

Alexander Serkh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20120222497
    Abstract: A flexible member test apparatus comprising a driver member having a first diameter and a second diameter, the first diameter is not equal to the second diameter, a first driven member coupled by a first flexible member to the driver member through contact of the first flexible member with a first diameter surface, a second driven member coupled by a second flexible member to the driver member through contact of the second flexible member with a second diameter surface, the first driven member rotationally coupled to a magnetic particle clutch, and the second driven member rotationally coupled to the magnetic particle clutch.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 6, 2012
    Inventors: Dean Schneider, Alexander Serkh, Imtiaz Ali, Peter Ward
  • Patent number: 8192312
    Abstract: An isolator comprising a hub, a pulley frictionally engaged with the hub through a bushing for instantaneous rotational movement, the bushing and hub having a coefficient of friction, a resilient member engaged between the pulley and the hub for transmitting a torque, and a locking member for retaining the pulley on the hub.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: June 5, 2012
    Assignee: The Gates Corporation
    Inventors: Imtiaz Ali, Matthew Kramp, Alexander Serkh
  • Patent number: 8157682
    Abstract: A tensioner comprising a base having a shaft, a pivot arm engaged with the shaft, a pulley journalled to the pivot arm, an arcuate damping member frictionally engaged with a pivot arm inner surface, a torsion spring having a first end engaged with the pivot arm, the torsion spring having a second end bearing upon the damping member so that upon loading of the torsion spring in the unwinding direction the damping member is compressed between the second end of the torsion spring and the base thereby causing a normal force to be imparted upon the pivot arm by said damping member.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: April 17, 2012
    Assignee: The Gates Corporation
    Inventor: Alexander Serkh
  • Publication number: 20120088616
    Abstract: An isolator comprising a hub, a pulley frictionally engaged with the hub through a bushing for instantaneous rotational movement, the bushing and hub having a coefficient of friction, a resilient member engaged between the pulley and the hub for transmitting a torque, and a locking member for retaining the pulley on the hub.
    Type: Application
    Filed: December 14, 2011
    Publication date: April 12, 2012
    Applicant: The Gates Corporation
    Inventors: Imitaz Ali, Matthew Kramp, Alexander Serkh
  • Publication number: 20120028751
    Abstract: A shift mechanism for a transmission comprising a planetary gear transmission, a shift cam engaged with a planetary gear assembly in the planetary gear transmission, the shift cam having a shift cam stop, a rotatable cable ring connected to a moveable cable, the cable ring comprising a ramped portion, a rotatable ramped ring, the ramped ring comprising a ramped portion cooperatively engaged with the cable ring ramped portion, and further the ramped ring having a stop cooperatively engagable with the shift cam stop, a rotation of the cable ring urges the ramped ring a predetermined distance in a direction normal to the plane of rotation of the cable ring, the shaft cam held against rotation by engagement with the ramped ring, and at which predetermined distance the ramped ring is allowed to rotate with the cable ring simultaneous with the axial movement of the ramped ring, and a spring connected between the cable ring and the shift cam, the shaft cam reacting to the spring force rotates upon rotation of the ra
    Type: Application
    Filed: July 28, 2010
    Publication date: February 2, 2012
    Inventors: Alexander Serkh, Dean Schneider
  • Publication number: 20120015768
    Abstract: An isolator comprising a hub, a pulley journalled to the hub, the pulley having a stop, the hub having a resilient member for engaging the stop, a torsion spring connected between the pulley and the hub, an inertial member attached to the hub by a flexible member, the inertial member disposed within a pulley receiving portion that is disposed radially inward of a pulley belt engaging surface, and the resilient member having a convex surface for engaging the stop such that a spring rate of the resilient member is non-linear upon a compression against the stop.
    Type: Application
    Filed: July 13, 2010
    Publication date: January 19, 2012
    Inventors: Alexander Serkh, Peter Ward, Imtiaz Ali, Dean Schneider
  • Publication number: 20110256968
    Abstract: An isolator comprising a shaft (10), a pulley (20) journalled to the shaft on a first bushing (40) and a second bushing (50), a torsion spring (30) engaged with the shaft and the pulley, the torsion spring exerting an axial contractive force to retain the pulley on the shaft, a cover member (60) fixed to the shaft, the pulley urged into engagement with the cover member by the torsion spring axial contractive force, the cover member further comprising an axially projecting member (62) disposed radially outwardly of the torsion spring, the pulley comprising a circumferential pocket (24) for cooperatively receiving the projecting member and having a stop (23) disposed within the circumferential pocket, and a rubber member (80) disposed with the stop for engaging the projecting member.
    Type: Application
    Filed: April 15, 2010
    Publication date: October 20, 2011
    Inventors: Alexander Serkh, Peter Ward, Imtiaz Ali, Dean Schneider
  • Publication number: 20110245000
    Abstract: An isolator comprising a shaft (10), a pulley (20) journalled to the shaft on a first bushing (40) and a second bushing (50), the shaft comprising a shaft stop (12) disposed on a shaft radially outer surface (14), the pulley and the shaft rotationally moveable relative to each other, the pulley comprising an inner hub (23), the inner hub having a pulley stop (24) disposed to cooperatively engage the shaft stop, a torsion spring (30) engaged with the shaft and the pulley, the torsion spring exerting a contractive force parallel to an axis of rotation (A-A) in order to retain the pulley on the shaft, a cover member (60) fixed to the shaft, the pulley urged into engagement with the cover member by the torsion spring axial contractive force, and a rubber member (80) disposed on the shaft stop for engaging the pulley stop.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 6, 2011
    Inventors: Alexander Serkh, Peter Ward, Imtiaz Ali, Dean Schneider
  • Publication number: 20110241306
    Abstract: A bicycle comprising a frame and at least one wheel attached to the frame, the frame further comprising a receiver, a first planetary gear transmission disposed in the receiver, the wheel having a hub, a second planetary gear transmission disposed in the hub, and an endless member for transmitting a torque trained between the first planetary gear transmission and the second planetary gear transmission.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 6, 2011
    Inventors: Alexander Serkh, Dean Schneider
  • Publication number: 20110177912
    Abstract: A planetary gear mechanism for a bicycle, and more particularly to a planetary gear mechanism comprising a first planetary mechanism connected coaxially in series to a second planetary mechanism, which second planetary mechanism is connected coaxially in series to a third planetary mechanism, the second planetary mechanism output is a step up in speed from the first planetary mechanism output, the third planetary mechanism output is a step up in speed from the second planetary mechanism output.
    Type: Application
    Filed: March 5, 2010
    Publication date: July 21, 2011
    Inventors: Alexander Serkh, Dean Schneider
  • Publication number: 20110177911
    Abstract: A planetary gear mechanism for a bicycle, and more particularly to a planetary gear mechanism comprising a first planetary mechanism connected coaxially in series to a second planetary mechanism, which second planetary mechanism is connected coaxially in series to a third planetary mechanism, the second planetary mechanism output is a step up in speed from the first planetary mechanism output, the third planetary mechanism output is a step up in speed from the second planetary mechanism output.
    Type: Application
    Filed: January 20, 2010
    Publication date: July 21, 2011
    Inventors: Alexander Serkh, Dean Schneider
  • Publication number: 20110177897
    Abstract: A tensioner comprising a base (7), a pivot arm (1) pivotally engaged with the base, a torsion spring (9) engaged between the base and the pivot arm, the torsion spring loadable by movement of the arm in an unwinding direction, a damping mechanism (8) frictionally engaged with an arm inner surface (11) and in a pressing engagement with the base, and further bearing upon a stop (71) on the base, and the damping mechanism urged radially outward into engagement with the inner surface of the arm as the torsion spring is loaded in the unwinding direction and by a pivotal motion of the damping mechanism about the stop (71).
    Type: Application
    Filed: January 20, 2010
    Publication date: July 21, 2011
    Inventors: Peter Ward, Alexander Serkh
  • Publication number: 20110065537
    Abstract: An isolator decoupler comprising a pulley, a shaft, a bushing slidingly engaged with the pulley and slidingly engaged with the shaft, the pulley journalled to the shaft by a bearing, a one-way clutch fixed to the shaft and engaged with the bushing whereby the bushing rotates in unison with the one-way clutch, a torsion spring engaged between the pulley and the one-way clutch to resiliently couple the pulley to the shaft, and the pulley non-resiliently directly coupleable to the shaft in a temporary predetermined loaded condition.
    Type: Application
    Filed: September 17, 2009
    Publication date: March 17, 2011
    Inventors: Alexander Serkh, Imtiaz Ali, Peter Ward
  • Publication number: 20110015017
    Abstract: A tensioner comprising a base having a shaft, a pivot arm engaged with the shaft, a pulley journalled to the pivot arm, an arcuate damping member frictionally engaged with a pivot arm inner surface, a torsion spring having a first end engaged with the pivot arm, the torsion spring having a second end bearing upon the damping member so that upon loading of the torsion spring in the unwinding direction the damping member is compressed between the second end of the torsion spring and the base thereby causing a normal force to be imparted upon the pivot arm by said damping member.
    Type: Application
    Filed: August 21, 2009
    Publication date: January 20, 2011
    Inventor: Alexander Serkh
  • Publication number: 20110015016
    Abstract: A tensioner comprising a base having a shaft, a pivot arm engaged with the shaft, a pulley journalled to the pivot arm, an arcuate damping member frictionally engaged with a pivot arm inner surface, a torsion spring having a first end engaged with the pivot arm, the torsion spring having a second end bearing upon the damping member so that upon loading of the torsion spring in the unwinding direction the damping member is compressed between the second end of the torsion spring and the base thereby causing a normal force to be imparted upon the pivot arm by said damping member.
    Type: Application
    Filed: July 17, 2009
    Publication date: January 20, 2011
    Inventor: Alexander Serkh
  • Patent number: 7815539
    Abstract: A planetary transmission comprising an input member, an output member, a planetary gear assembly mechanically disposed between the input member and the output member, a centrifugal clutch mechanically disposed between the input member and the output member, a one-way clutch mechanically disposed between the input member and the output member, the one-way clutch for directly coupling the input member and the output member from zero rotational speed up to a first rotational speed, the centrifugal clutch for directly coupling the input member and the output member from a second rotational speed greater than zero rotational speed to a third rotational speed which is in excess of the first rotational speed, and a brake member for selectively controlling rotation of the planetary gear assembly.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: October 19, 2010
    Assignee: The Gates Corporation
    Inventors: Peter Ward, Alexander Serkh, Corrado Iotti
  • Patent number: 7798928
    Abstract: A dual ratio belt drive system comprising a clutch unit mounted directly to a driver rotating shaft, a one-way clutch mounted directly to the driver rotating shaft, a plurality of rotating accessories rotatably connected to the clutch unit and rotatably connected to the driver rotating shaft through the one-way clutch such that the accessories are driven by the clutch unit at a first speed ratio and driven directly by the driver rotating shaft through said one-way clutch at a second speed ratio, with the clutch unit operating at a predetermined value of an engine operating condition thereby defining the transition between the first and second speed ratios, and the clutch unit being engaged at engine start.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: September 21, 2010
    Assignee: The Gates Corporation
    Inventor: Alexander Serkh
  • Patent number: 7758465
    Abstract: A damped planetary transmission comprising an input member, an inertial member connected to the input member, a planetary gear assembly connected to the input member, the planetary gear assembly comprising a carrier member that is directly and fixedly connected to the input member, a brake member engaged with a ring gear of the planetary gear assembly, the planetary gear assembly connected to an output member, a one-way clutch operationally disposed between the input member and the output member, and a vibration isolator directly connected for torque flow between the input member and the one-way clutch.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: July 20, 2010
    Assignee: The Gates Corporation
    Inventors: Alexander Serkh, Peter Alan Ward
  • Patent number: 7727115
    Abstract: A two speed transmission and belt drive system utilizing the transmission. The two speed transmission comprises a planetary gear train comprising an input pulley connected to an input carrier, and a sun gear and a ring gear. The input carrier also comprises a plurality of planetary gears disposed between the sun gear and the ring gear. The sun gear is engaged with an electromagnetic brake member. The ring gear is engaged with an output pulley. A one-way clutch is disposed between the input carrier and the output shaft. The brake member is engaged at engine idle and is disengaged at engine speeds above idle. When the brake member is engaged the sun gear does not rotate, thereby driving the ring gear and output pulley at a greater speed than the input pulley. An accessory pulley operates with the transmission output pulley resulting in an accessory speed that is proportional to an engine speed at idle.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: June 1, 2010
    Assignee: The Gates Corporation
    Inventor: Alexander Serkh
  • Publication number: 20100120563
    Abstract: A damped isolator comprising a first hub, a first pulley connected to the first hub, a bearing carrier connected to the first hub, an elastomeric member engaged with the first hub, a one-way clutch engaged with the elastomeric member, a bearing received by the bearing carrier, a second hub engaged with the one-way clutch and the bearing, and a second pulley connected to the second hub.
    Type: Application
    Filed: November 13, 2008
    Publication date: May 13, 2010
    Inventors: Alexander Serkh, Lin Zhu, Matthew Kramp, Imtiaz Ali, Dean Schneider