Tilt latch for window sash
AssigneeAlcan Aluminum Corporation
InventorJohn M. Brown, Jr.
Life of this patent
Estimating the term…
Abstract
A tilt latch for a window sash including a base member mountable on a sash and a slide member disposed for sliding movement in a channel formed in the base member and resiliently biased toward an extended position in which a nose-shaped first end of the slide member engages a window frame to prevent the sash from tilting out of the frame. A downward projection formed on a second end portion of the slide member interferingly engages an end edge of the base member to arrest movement of the slide member at the extended position, but this second end portion of the slide member is dimensioned to enable the projection to be lifted manually out of such engagement so that the slide member can be moved beyond the extended position.
Claims7
A tilt latch for a window sash, comprising
- (a) a base member mountable on a sash, having a bottom with an upwardly facing surface and opposed first and second end edges, and spaced parallel sides projecting upwardly from the bottom to define therewith an upwardly opening, open-ended channel, facing parallel grooves being respectively formed in said sides;
- (b) a slide member disposed in said channel for endwise sliding movement relative to the base member, and having opposed first and second ends respectively adjacent the first and second end edges of the bottom of the base member, and opposed side flanges extending from the first end toward the second end and respectively received in said grooves, the slide member further having, at its first end, a nose receivable in a window frame to prevent tilting of the sash relative to the frame;
- and
- (c) resilient biasing means acting between the base member and the slide member for urging the slide member in a locking direction toward an extended position in which the nose projects beyond the first end of the base member so as to be received in the window frame;
- (d) said slide member including a depending stop projection at the second end of the slide member for interferingly engaging the second end edge of the base member bottom to arrest movement of the slide member in the locking direction at the extended position, and
- (e) said slide member further including a portion, extending between the lateral flanges and said second end so as to space the second end away from the flanges, and disposed to enable the stop projection to be moved manually upward above the second end edge of the base member bottom and thereby to release the slide member for movement in the locking direction beyond the extended position.
Dependencies are inferred from the claim text.