Patents by Inventor Robert J. Pavlin

Robert J. Pavlin 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).

  • Multiple torsion spring and methods of use
    Patent number: 6220586
    Abstract: A multiple torsion spring assembly according to the present invention may be provided with a coiled helical torsion spring. The spring has first and second end coils, and a plurality of intermediate coils between the first and second end coils. The first end coil inner diameter is less than the inner diameter of the intermediate coils. The second end coil inner diameter is less than the inner diameter of the first end coil. The spring may be used to control a throttle return of a throttle body. Methods of manufacturing spring assemblies are also disclosed.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: April 24, 2001
    Assignee: Precision Products Group
    Inventors: Robert J. Pavlin, Todd K. Watkins, Gary T. Wehnes, Curt A. Converse, James E. Adams
  • Torsion spring assembly with interlocking bushings
    Patent number: 5368283
    Abstract: A torsion spring assembly particularly adapted for use in closing the throttle valve of an automotive throttle body. The assembly includes two bushings formed with sleeves adapted to telescope into the end portions of a torsion spring. As an incident thereto, the bushings automatically interlock with one another to hold the bushings and the spring in assembled relation.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: November 29, 1994
    Assignee: Precision Products Group, Inc.
    Inventor: Robert J. Pavlin