Patents by Inventor Richard R. Lewchuk

Richard R. Lewchuk 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).

  • Mounting system for an add on glass panel
    Patent number: 4134240
    Abstract: A glass panel is maintained in spaced relation to an existing window mounted in a fenestration by securing the panel to an abutment mounted on opposed sidwalls and top wall of the fenestration. The glass panel is coated to reduce passage of solar energy and/or radiant heat. Outside noises are dampened by providing (1) a resilient gasket between the abutment and the panel and (2) a resilient glazing foot between the bottom side of the panel and fenestration ledge.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: January 16, 1979
    Assignee: PPG Industries, Inc.
    Inventors: John P. Bologna, Richard R. Lewchuk
  • Glazing tool
    Patent number: 4118911
    Abstract: A tool for installing a pane to an existing glazing to provide an insulating, sealed airspace therebetween includes a plate having a pin on one surface to secure the tool to a frame of the existing glazing. A shaft slidably mounted on the other side of the plate urges a blade against the marginal edges of the pane to flow adhesive between the pane and existing glazing to form a hermetic seal.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: October 10, 1978
    Assignee: PPG Industries, Inc.
    Inventor: Richard R. Lewchuk
  • Add-on multiple glazing with hygroscopic material
    Patent number: 3971178
    Abstract: An additional pane is added to an existing glazing installation to provide an insulating, sealed airspace therebetween.
    Type: Grant
    Filed: March 25, 1974
    Date of Patent: July 27, 1976
    Assignee: PPG Industries, Inc.
    Inventors: Renato J. Mazzoni, George H. Bowser, Richard R. Lewchuk