Cable Guide Changes Direction Of Counterbalancing Force Patents (Class 49/151)
  • Support mechanism for tilted window sash
    Patent number: 6684454
    Abstract: A cord tensioned by a spring supports the sash of a hung window in a stationary position while the sash is tilted for cleaning. The cord pulls a pulley attached to the spring which extends as the sash is further tilted. A tubing houses the spring and pulley and provides a stop that limits the maximum tilt of the sash.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: February 3, 2004
    Inventor: Matthew Ehrenreich