Pick resistant sash lock and keeper and method of locking sashes

Details Pick resistant sash lock and keeper and method of locking sashes Pick resistant sash lock and keeper and method of locking sashes

1999-07-26

2000-09-12

Dayoan, B.

Closure fasteners

Bolts

Swinging and camming

292346, E05C 304

Patent

active

061166650

ABSTRACT:
The sash lock has a rotatable cam which engages the keeper. The sash lock has a slide plate mounted below the cam and the slide plate moves between a retracted position in which its leading edge is flush with the sash to which the lock is mounted. In an extended position in which the leading edge of the plate extends far enough to block the narrow gap between the sashes. The slide plate is mounted for movement perpendicular to the edge of the sash and parallel to the plane of the top surface of the sash. The slide plate includes an arcuate recess in one side of the plate which is engaged by a pin extending from the rotatable cam. The recess in the slide plate is contoured so that during initial portion of the movement of the cam from its open position toward its locked position, the slide plate does not move. After the cam has moved far enough to engage the keeper, the slide plate moves outward toward the sash to which the keeper is mounted so as to block the gap between the two sashes in the region of the cam. It reduces the chances of a sash lock being forced open.

REFERENCES:
patent: 1029274 (1912-06-01), Caler
patent: 1252524 (1918-01-01), White
patent: 1275938 (1918-08-01), Juselius
patent: 1896509 (1933-02-01), Carmichael
patent: 1899466 (1933-02-01), Kistner
patent: 2489078 (1949-11-01), Cameron
patent: 2904855 (1959-09-01), Hagerty
patent: 2961263 (1960-11-01), Ahlgren
patent: 2997323 (1961-08-01), Riser
patent: 3261629 (1966-07-01), Campbell
patent: 3469874 (1969-09-01), Mercurio
patent: 4790583 (1988-12-01), Tonsmania
patent: 5090570 (1992-02-01), Lindquist
patent: 5219193 (1993-06-01), Piltingsrud

Affiliated with

Also associated with

Rating

Pick resistant sash lock and keeper and method of locking sashes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pick resistant sash lock and keeper and method of locking sashes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pick resistant sash lock and keeper and method of locking sashes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-88994