Patents by Inventor Cynthia A. Thurston

Cynthia A. Thurston 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).

  • Belt alternator starter accessory drive with dual tensioner
    Patent number: 7494434
    Abstract: An accessory drive for an engine has a belt driven starter generator adapted for driving and being driven by the engine. In an exemplary embodiment, the drive includes a first engine drive pulley and a second starter drive pulley. A drive belt engages the drive pulleys for driving either pulley from the other. A dual belt tensioner made as a preassembled unit has a carrier with a central pivot mounted to the engine and first and second carrier arms extending radially from the central pivot. A first tensioner mounted on the first arm carries a first tensioner pulley biased against a first belt run adjacent the second drive pulley that is slack during engine starting.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: February 24, 2009
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Paul J. Mc Vicar, Cynthia A. Thurston
  • Belt alternator starter accessory drive with dual tensioner
    Publication number: 20060287146
    Abstract: An accessory drive for an engine has a belt driven starter generator adapted for driving and being driven by the engine. In an exemplary embodiment, the drive includes a first engine drive pulley and a second starter drive pulley. A drive belt engages the drive pulleys for driving either pulley from the other. A dual belt tensioner made as a preassembled unit has a carrier with a central pivot mounted to the engine and first and second carrier arms extending radially from the central pivot. A first tensioner mounted on the first arm carries a first tensioner pulley biased against a first belt run adjacent the second drive pulley that is slack during engine starting.
    Type: Application
    Filed: June 15, 2005
    Publication date: December 21, 2006
    Inventors: Paul McVicar, Cynthia Thurston