Patents by Inventor Charles J. Gonwa

Charles J. Gonwa 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: 4609067
    Abstract: A vehicular muffler heat shield comprises at least one and preferably two longitudinally rigid, transversely flexible shield members. The shield members have muffler shell contacting, longitudinal ribs and raised, perforated shield panels. The shield members are identical and longitudinally slidable to fit mufflers of a range of lengths. The shield members are strapped to muffler shells by separate, flexible straps which conform the shield members to muffler shell contours.
    Type: Grant
    Filed: May 8, 1985
    Date of Patent: September 2, 1986
    Assignee: Maremont Corporation
    Inventor: Charles J. Gonwa
  • Patent number: 4328696
    Abstract: A method of making a heat shield for an exhaust system tailpipe which comprises the steps of positioning a blank of sheet metal between a die having a forming surface of generally arcuately concave cross-sectional configuration which extends in a generally arcuately convex direction and a straight cylindrical body of elastomeric material having a longitudinal axis extending generally tangentially with respect to the arcuately convex direction of extent of the die forming surface, effecting an initial relative movement between the die and the cylindrical elastomeric body in a direction toward one another so as to compress a central portion of the sheet metal blank to a central portion of the die forming surface by a central portion of the exterior surface of the cylindrical elastomeric body while the latter is in a straight condition, and progressively flexing opposite end portions of the cylindrical elastomeric body in directions toward the end portions of the die forming surface so as to progressively compre
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: May 11, 1982
    Assignee: Maremont Corporation
    Inventors: Charles J. Gonwa, Kenneth L. Baker, Ronald A. Sieloff