Self-locking window operator

Details Self-locking window operator Self-locking window operator

1984-01-23

1986-10-21

Downey, Kenneth

Movable or removable closures

With operator for movably mounted closure

49342, 49279, E05F 1100

Patent

active

046177582

ABSTRACT:
A self-locking window operator having one or more arms transmitting a force from a drive mechanism to a window sash for positioning thereof and with the arms mounted and driven for rotational movement in positioning of the window sash and also mounted and driven for linear movement when the window sash is closed to achieve a locking action between the window sash and the window frame by engaging a locking mechanism which locks the window against high window-opening loads.

REFERENCES:
patent: 1297479 (1919-03-01), Lane
patent: 1849887 (1932-03-01), Siggins et al.
patent: 1905921 (1933-04-01), Litchfield
patent: 2505912 (1950-05-01), Reynaud
patent: 2709582 (1955-05-01), Chapman
patent: 2824735 (1958-02-01), Stavenau et al.
patent: 3044131 (1962-07-01), Reynaud
patent: 3045296 (1962-07-01), Silverman
patent: 3258874 (1966-07-01), Martin

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