Patents by Inventor Vern T. DeWitt

Vern T. DeWitt 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).

  • Sealing jamb liner for double-hung window sash
    Patent number: 4606147
    Abstract: A sealing jamb liner 10 for double-hung window sash includes a thick and rigid resin extrusion 24 having a pair of sash runs 11 and 12 separated by a parting bead 13. A pair of extruded flange elements 25 formed of a thin, resilient, and low spring rate resin material are mounted along respective outer sash run edges 21 and 22 opposite parting bead 13. Each flange element 25 has a sealing 27 angled obliquely of the adjacent sash run and disposed for resiliently engaging and sealing between a sash and an adjacent trim stop.
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: August 19, 1986
    Assignee: Caldwell Manufacturing Company
    Inventors: Vern T. DeWitt, Garry P. Haltof