Patents by Inventor Yahya Hodjat

Yahya Hodjat 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).

  • Patent number: 7625290
    Abstract: A coupling sleeve for use in a sleeve-type, flexible, shaft-coupling device, having a generally annular body portion with one or more axially extending, polymeric or elastomeric teeth on at least one of its inner and outer periphery and having a rigid support band with a rigid, axially extending fin protruding radially into at least one of the teeth. The coupling sleeve has a cross sectional area with a rigid band portion that occupies the minor portion of the cross section relative to the polymeric portion. Torque applied to the teeth of the coupling sleeve during use is resisted by the fins and the tooth material is thus placed in compression.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: December 1, 2009
    Assignee: The Gates Corporation
    Inventors: Yahya Hodjat, Keming Liu, Lin Zhu, Marc Cadarette
  • Patent number: 7598308
    Abstract: A metal elastomer compound comprising an elastomer having a molecular weight in the range of approximately 100,000 g/mol up to approximately 300,000 g/mol, a metal fiber material comprising a plurality of metal fibers each having an aspect ratio greater than approximately 1, and the metal fiber material mixed with the elastomer in an amount in the range of 50 phr up to 100 phr.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: October 6, 2009
    Assignee: The Gates Corporation
    Inventors: Yahya Hodjat, Yuding Feng
  • Publication number: 20090223775
    Abstract: A decoupling isolator comprising a pulley, a hub member comprising a stop, a flat wire spiral spring having an end fixedly connected to the pulley, the flat wire spiral spring having another end engageable with the stop to limit a rotation of the pulley.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 10, 2009
    Inventors: Yahya Hodjat, Marc R. Cadarette, Lin Zhu
  • Publication number: 20090118045
    Abstract: A tensioner comprising a cantilever spring having a first arm (13) and a second arm (14), the first arm and the second arm describing an included angle (?), a pulley (30) journalled to the first arm, a mounting portion (11), and a resilient damping member (20) disposed between the first arm and the second arm for damping an arm vibration.
    Type: Application
    Filed: November 1, 2007
    Publication date: May 7, 2009
    Inventors: Yahya Hodjat, Marc R. Cadarette
  • Publication number: 20090107791
    Abstract: An isolator decoupler comprising a first tapered portion for connecting to a driving shaft, a second tapered portion cooperatively engaging the first tapered portion, the second tapered portion having a frictional engagement with a pulley, and an elastomeric member operatingly disposed between the second tapered portion and the pulley.
    Type: Application
    Filed: October 25, 2007
    Publication date: April 30, 2009
    Inventors: Lin Zhu, Marc R. Cadarette, Yahya Hodjat
  • Publication number: 20090049881
    Abstract: A method of forming a tubular ring comprising spinning a flat blank having a bore, expanding the bore using a tubular shaft shaped spinning roller by initially engaging the tubular shaft shaped spinning roller with the flat blank bore at an angle (?) to the spinning axis, forming the flat blank into a tubular ring by rotating the tubular shaft shaped spinning roller about a center of rotation (B) such that the tubular shaft shaped spinning roller becomes substantially parallel to the spinning axis, and forming a contour on an outer surface of the tubular ring.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 26, 2009
    Inventor: Yahya Hodjat
  • Patent number: 7487656
    Abstract: A method of spinning multiple parts comprising attaching two blanks to an intermediate mandrel, loading the intermediate mandrel and blanks into the spinning machine by clamping the intermediate mandrel and the blanks between the spinning machine tailstock and the headstock, moving rollers simultaneously radially inward and outward to execute metal forming on each blank to form a part from each blank, ejecting the intermediate mandrel, and ejecting each part substantially simultaneously from the intermediate mandrel.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: February 10, 2009
    Assignee: The Gates Corporation
    Inventor: Yahya Hodjat
  • Publication number: 20090036609
    Abstract: A torsional vibration damper or other vibration damping device with a rubber vibration absorbing element. The rubber element is a peroxide-cured composition based on 100 parts of ethylene-alpha-olefin elastomer, and 5 to 100 parts of polyvinyl butyral polymer which may have a molecular weight from about 40,000 to about 250,000. The composition may also include a compatibilizer or homogenizer, such as chlorinated polyethylene. The polyvinyl butyral increases the damping of the composition, and the compatibilizer improves the temperature stability of the damping.
    Type: Application
    Filed: August 3, 2007
    Publication date: February 5, 2009
    Inventors: Yuding Feng, Yahya Hodjat, Lin Zhu
  • Patent number: 7437808
    Abstract: A method of forming a metal matrix component and product that comprises forming scrap sheet metal material, shredding the scrap sheet metal material to a predetermined size range, filling the shredded scrap sheet metal material into a compacting die, adding an adhesive material to the shredded scrap sheet metal material in the compacting die, compressing the shredded scrap sheet metal material and curing the adhesive to form a metal matrix component. The product comprises an inertia ring that may be used in a crankshaft damper.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: October 21, 2008
    Assignee: The Gates Corporation
    Inventor: Yahya Hodjat
  • Publication number: 20080236232
    Abstract: A method of spinning multiple parts comprising attaching two blanks to an intermediate mandrel, loading the intermediate mandrel and blanks into the spinning machine by clamping the intermediate mandrel and the blanks between the spinning machine tailstock and the headstock, moving rollers simultaneously radially inward and outward to execute metal forming on each blank to form a part from each blank, ejecting the intermediate mandrel, and ejecting each part substantially simultaneously from the intermediate mandrel.
    Type: Application
    Filed: March 30, 2007
    Publication date: October 2, 2008
    Inventor: Yahya Hodjat
  • Publication number: 20080169077
    Abstract: A method of reinforcing a low melting temperature cast metal part comprising preparing a molten metal material having a melting temperature, mixing a reinforcing material having a melting temperature greater than the melting temperature of the molten metal material into the molten metal material, pouring the molten metal material into the mold, applying a force to the reinforcing material causing the reinforcing material to occupy a predetermined portion of the mold and thereby a predetermined portion of the cast metal part, and solidifying the molten metal material.
    Type: Application
    Filed: January 11, 2007
    Publication date: July 17, 2008
    Inventor: Yahya HODJAT
  • Publication number: 20080105021
    Abstract: A method of forming a gear comprising gripping a blank to be spun formed in a spin forming machine, spin forming a gear having helical teeth disposed on an inner surface, and ejecting the gear by simultaneous extension and rotation of an ejector member and thereby rotation of the gear being ejected.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 8, 2008
    Inventors: Yahya Hodjat, Roger Lawcock, Joel Wright, John Roes
  • Publication number: 20080009354
    Abstract: A coupling sleeve for use in a sleeve-type, flexible, shaft-coupling device, comprising: a generally annular body portion having an inner periphery and an outer periphery; and one or more axially extending, polymeric or elastomeric teeth on at least one of said periphery of said body portion; wherein said body portion comprises a rigid support band having a rigid, axially extending fin protruding radially into at least one of said one or more teeth. The coupling sleeve has a cross sectional area comprising a polymeric portion and a rigid band portion, and said rigid band portion occupies the minor portion of said cross section relative to said polymeric portion. Torque applied to the teeth of the coupling sleeve during use is resisted by the fins and the tooth material is thus placed in compression. Another aspect of the invention is to provide a coupling device comprising the coupling sleeve and at least one end piece coupled to said sleeve.
    Type: Application
    Filed: July 5, 2006
    Publication date: January 10, 2008
    Inventors: Yahya Hodjat, Keming Liu, Lin Zhu, Marc Cadarette
  • Publication number: 20070209899
    Abstract: A decoupling vibration isolator comprising a driver member, a driven member, a retaining member immovably attached to the driver member and having a sliding engagement with the driven member to allow predetermined rotational movement of the driven member with respect to the driving member, an energy absorbing member disposed between the driver member and the driven member, the energy absorbing member compressed between the driver member and the driven member in a driving direction, and the driven member temporarily decoupleable from the driver member by decompression of the energy absorbing member whereby substantially no torque is transmitted from the driver member to the driven member for a predetermined angular range.
    Type: Application
    Filed: March 9, 2006
    Publication date: September 13, 2007
    Inventors: Keming Liu, Yahya Hodjat, Marc Cadarette, Lin Zhu, Yuding Feng
  • Publication number: 20070125147
    Abstract: A method of forming a part comprising the steps of forming a round sheet metal blank, pressing the sheet metal blank through a first forming die to form a blank, the blank having a bearing seat, the bearing seat having a bearing seat edge, pressing the blank through a second forming die using a mandrel applying a pressure to the bearing seat edge, and sequentially reducing the diameter of the blank by a single pass through the second forming die.
    Type: Application
    Filed: December 6, 2005
    Publication date: June 7, 2007
    Inventor: Yahya Hodjat
  • Publication number: 20060264286
    Abstract: A sprocket comprising a cast wheel (10) having a rim (12), the rim having a toothed profile (15), a ring (20) having a thickness and toothed profile (21) that substantially matches the rim toothed profile, the ring having a press fit to the rim, and the ring comprising a metallic material having a hardness greater than a hardness of the cast wheel.
    Type: Application
    Filed: May 20, 2005
    Publication date: November 23, 2006
    Inventor: Yahya Hodjat
  • Publication number: 20060223927
    Abstract: A metal elastomer compound comprising an elastomer having a molecular weight in the range of approximately 100,000 g/mol up to approximately 300,000 g/mol, a metal fiber material comprising a plurality of metal fibers each having an aspect ratio greater than approximately 1, and the metal fiber material mixed with the elastomer in an amount in the range of 50 phr up to 100 phr.
    Type: Application
    Filed: March 30, 2005
    Publication date: October 5, 2006
    Inventors: Yahya Hodjat, Yuding Feng
  • Patent number: D533052
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: December 5, 2006
    Assignee: The Gates Corporation
    Inventors: Yahya Hodjat, Marc R. Cadarette, Lin Zhu
  • Patent number: D549258
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: August 21, 2007
    Assignee: The Gates Corporation
    Inventors: Lin Zhu, Yahya Hodjat, Marc R. Cadarette, Jason David Hatfield
  • Patent number: D551943
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: October 2, 2007
    Assignee: The Gates Corporation
    Inventors: Yahya Hodjat, Marc R. Cadarette, Lin Zhu, Shoukath M. Ali