Sash lock

Details Sash lock Sash lock

1984-12-13

1986-11-11

Wolfe, Robert L.

Closure fasteners

Bolts

Swinging

292241, 292DIG33, 292DIG47, E05C 310

Patent

active

046218475

ABSTRACT:
A sash lock for a casement window having a case with two sections of different height and with the lower level section having a top wall with a circular segment opening with a curved edge which receives a generally circular part of a rotatable operating member positioned in the opening and extending under a vertical wall interconnecting the two case sections of different height. The rotatable operating member has a curved edge of the same curvature as the curved edge of the case top wall opening as well as a peripheral flange underlying the curved edge of the top wall opening whereby in all rotative positions of the planar operating member the opening is effectively sealed.

REFERENCES:
patent: 36524 (1862-09-01), Minor
patent: 379910 (1888-03-01), Rosentreter
patent: 815537 (1906-03-01), Kissinger
patent: 837811 (1906-12-01), Ebbeson
patent: 3422575 (1969-01-01), Armstrong
patent: 4059298 (1977-11-01), Van Klompenburg
patent: 4429910 (1984-02-01), Anderson
patent: 4444422 (1984-04-01), Donaldson et al.

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