Patents Assigned to Quaker City Manufacturing Company
  • Block and tackle window sash balance and installation method
    Patent number: 4332054
    Abstract: An improved block and tackle type sash balance that can be installed in single and double-hung windows by a single workman without the necessity of removing the window sashes from the window frame and reassembling the window unit.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: June 1, 1982
    Assignee: Quaker City Manufacturing Company
    Inventors: H. Palmer Paist, Barry M. Jones