Lock assembly for a pivotable window

Details Lock assembly for a pivotable window Lock assembly for a pivotable window

1991-04-19

1992-03-17

Moore, Richard E.

Closure fasteners

Bolts

Sliding

292DIG38, E05C 110

Patent

active

050962400

ABSTRACT:
A lock assembly for a window assembly. The window assembly has a window sash installed for reciprocal sliding movement within a window frame. The window sash includes a header frame member. The lock assembly comprises a housing and a finger disposed within the housing. The finger is adapted for sliding movement between an extended position wherein the finger engages the window frame and a retracted position wherein the finger avoids engagement with the window frame. The lock assembly further includes a lock button and a socket for receiving the lock button.
The lock button includes a cap and a generally hollow cylindrical body depending from the cap. The cylindrical body includes first and second radially opposing, projecting tongues. Each of the tongues is in spaced relationship with the cap to form respective first and second grooves. The lock button further includes a locking tab depending from one of the tongues for selective engagement with the finger to selectively prevent retraction of the finger.
The socket extends through the housing and defines an annular edge surface and first and second radially opposing notches. The lock button is rotated to a first position such that the first and second tongues are aligned with the first and second notches for insertion into the socket, and the lock button is rotated to a second position wherein the first and second grooves receive the edge surface.

REFERENCES:
patent: 4195867 (1980-04-01), Baillie
patent: 4475311 (1984-10-01), Gibson
patent: 4641506 (1987-02-01), Boucher
patent: 4669765 (1987-06-01), Ullman
patent: 4837975 (1989-06-01), Simpson

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