Patents by Inventor Christopher Gruel

Christopher Gruel 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).

  • Valve actuation assembly
    Publication number: 20070023717
    Abstract: A valve actuation assembly includes a housing and a vane connected to a shaft. The vane is at least partially disposed within the housing. The valve actuation assembly further includes a valve assembly connected to the housing and a feedback device connected to at least one of the vane and the shaft. The feedback device is configured to apply a feedback force to the valve assembly.
    Type: Application
    Filed: July 28, 2005
    Publication date: February 1, 2007
    Inventor: Christopher Gruel
  • Low cost coated abrasives
    Patent number: 5782939
    Abstract: Substantial cost saving can be realized in a coated abrasive structure employing a plurality of layers of particulate material, if at least one of the under-layers of particles is provided by a layer of ground glass.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: July 21, 1998
    Assignee: Norton Company
    Inventors: Burton Farbstein, Bernard Loughlin, Christopher Gruel