초록 ▼

A window latch includes a catch that is movable into and out of engagement with a keeper. A handle is connected to the catch and rotates relative to a base to move the catch relative to the keeper. Rotation of the handle relative to the base also causes axially movement of another member between pos

A window latch includes a catch that is movable into and out of engagement with a keeper. A handle is connected to the catch and rotates relative to a base to move the catch relative to the keeper. Rotation of the handle relative to the base also causes axially movement of another member between positions of relatively greater and relatively lesser stability. The positions of relatively greater stability correspond to complete engagement and complete disengagement of the catch and the keeper.

대표청구항 ▼

[ I claim:] [1.] A window assembly having a frame, a first sash movably mounted within the frame, and a second sash mounted within the frame, the window assembly further comprising;a keeper mounted on the second sash;a catch mounted on the first sash in such a manner that when the first sash is move

[ I claim:] [1.] A window assembly having a frame, a first sash movably mounted within the frame, and a second sash mounted within the frame, the window assembly further comprising;a keeper mounted on the second sash;a catch mounted on the first sash in such a manner that when the first sash is moved to a closed position relative to the second sash, said catch is movable to selectively interengage said keeper and lock the first sash in said closed position;a handle mounted on the first sash in such a manner that movement of said handle in a first direction moves said catch into interengagement with said keeper when the first sash is in said closed position, and movement of said handle in a second, opposite direction moves said catch out of interengagement with said keeper;a compression spring, a rotor, and a bearing member arranged in series between said handle and the first sash, wherein said rotor rotates relative to said bearing member in response to movement of said handle, and energy stored in said spring forces said rotor toward said bearing member, and interengaging surfaces on said rotor and said bearing member are configured to minimize compression of said spring in any of at least two discrete orientations relative to one another, wherein in one of said at least two discrete orientations said catch interengages said keeper when the first sash is in said closed position, and in another of said at least two discrete orientations said catch is free of said keeper wherein the movement of said handle is in the plane of rotation of the handle only.