Casement window sash locking system
AssigneePella Corporation
InventorRobert S. Evers
Life of this patent
Estimating the term…
Abstract
A casement sash locking system including locking assembly, drive assembly and lock strike that can be mounted on either side allowing the window to open from the left side or right side. The locking assembly includes a lock catch that functions to first lift the outer free end of the sash and then pull the sash to a closed position, thereby preventing drag of the sash on the window frame sill.
Claims21
A locking assembly comprising,
- a housing having an outwardly extending channel defined by oppositely disposed guide surfaces,
- a cam rotatably mounted about an axis of rotation in said housing and including top and bottom faces, and an outer peripheral edge, an upwardly extending pin on said top face, and a slot extending from said periphery inwardly and defined by oppositely disposed guide edges,
- an elongated catch having a longitudinal axis and inner and outer ends, top and bottom sides and a longitudinally extending flange having opposite sides being perpendicular to said top and bottom sides, said outer end having a hook means and said inner end having a slot extending transversely to said longitudinal axis, and
- said catch having said flange positioned in said channel with said pin being received in said catch slot, said catch flange being positioned to engage the outer peripheral edge of said cam and extend into said cam slot at times during rotation of said cam.
The combination of a window and locking assembly, the window having a frame including a jamb and a frame stop, and a sash having interior and exterior sides and an outer edge, said sash being hinged to said frame and being moveable between open and closed positions, said locking assembly comprising,
- a lock strike on the interior side of said sash,
- a lock housing on said jamb adjacent said lock strike when said sash is in said closed position,
- an elongated catch in said housing and having inner and outer ends, said outer end having a hook means for engagement with said lock strike,
- drive means connected to said catch for moving said hook means from a first position extending outwardly and downwardly to a second position extending upwardly and withdrawn inwardly, whereby said hook means, in moving between said first and second positions is adapted to lift up on said lock strike and then pull said lock strike toward said jamb to said sash closed position.
A casement window lock strike comprising,
- a housing having an access opening on one side in communication with an interior chamber defined by a wall having strike shoulders on opposite sides of said access opening,
- said housing being adapted to be recessed into either of oppositely disposed vertical end edges of a sash whereby an upwardly facing lock catch hook will engage one strike shoulder when said housing is on one of said vertical edges and engage the other strike shoulder when said housing is on the other of said vertical edges.
Dependencies are inferred from the claim text.