Lock for sliding closures

Details Lock for sliding closures Lock for sliding closures

1975-10-30

1977-10-18

Hafer, Robert A.

Closure fasteners

Bolts

Swinging

292DIG46, 49449, E05C 304

Patent

active

040543080

ABSTRACT:
Sliding closures such as sliding glass doors or windows are locked by a stop member mounted in the upper track for the closures. The stop member is elongated longitudinally of the track and is pivoted about a transverse horizontal axis to permit its movement between an upper retracted position and a lower door-abutting position. The principal improvements comprise: (a) a stationary shoulder which abuts a part of the stop member when in its door-abutting position to resist excessive forces applied against the stop member by sliding movement of the door; (b) stationary pivotal supports for the stop member connected on both sides thereof to the track; and, (c) the supplemental use of a lateral projection attached to an outer sliding door for abutment by the stop member. Further, there is provided a novel spacer assembly in the upper track to limit upward movement of the door.

REFERENCES:
patent: 355080 (1886-12-01), Hinkle
patent: 1069079 (1913-07-01), Voight
patent: 1350698 (1920-08-01), Boedtcher
patent: 1388272 (1921-08-01), Lawrence
patent: 1558728 (1925-10-01), Wagner
patent: 3352586 (1967-11-01), Hakanson

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