Methods and apparatus for a single lever tilt lock latch window
AssigneeAmesbury Group, Inc.
InventorGary J. Marshik
Life of this patent
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Abstract
An apparatus for a tilt lock latch mechanism to be incorporated in double hung windows. In one embodiment, the tilt lock latch mechanism includes a rotatable element which rotates serially from a locked position, to an open position, to a tilt position.
Claims20
A window tilt lock latch mechanism comprising:
- (a) a housing;
- (b) a rotatable element including a keeper coupled to the rotatable element, such that rotation of the rotatable element rotates the keeper, the rotatable element mounted to the housing;
- (c) at least one retractable element disposable remote from the housing;
- and
- (d) a transmission connecting the rotatable element with the retractable element, wherein:
- when the window tilt lock latch is mounted in a first window sash and the rotatable element is at a first angular position, the rotatable element keeper is received in a receiver in a second window sash to prevent relative movement of the first window sash and the second window sash;
- when the rotatable element is at a second angular position, the rotatable element keeper is removed from the receiver in the second window sash;
- and
- when the rotatable element is at a third angular position, the rotatable element retracts the retractable element to permit the first window sash to be tilted away from the second window sash, wherein, the rotatable element rotates serially from the first angular position to the second angular position to the third angular position.
A tilt lock latch mechanism for use in a window assembly, the window assembly including a window frame having a pair of window frame slots, a first window sash, and a second window sash, the tilt lock latch mechanism comprising:
- a housing adapted to be mounted on the first window sash;
- a rotatable element including a keeper mounted on the housing, the keeper coupled to the rotatable element, such that a rotation of the rotatable element rotates the keeper;
- a receiver adapted to be mounted on the second window sash to accept the rotatable element keeper to prevent relative movement between the first window sash and the second window sash when the rotatable element is moved to a locked position, and to permit relative sliding movement between the first window sash and the second window sash when the rotatable element is moved to an open position;
- a pair of retractable tilt latches adapted to be disposed on opposite ends of the first window sash in communication with respective window frame slots for supporting the first window sash in sliding relation;
- and
- a transmission interdisposed between the rotatable element and the pair of retractable tilt latches, wherein the pair of retractable tilt latches are retracted from the window frame slots into the first window sash when the rotatable element is moved beyond the open position to a tilt position permitting the first window sash to be tilted relative to the window frame, wherein the rotatable element rotates serially from the lock position to the open position to the tilt position.
A method of operating a tilt in window having a first sash and a second sash slidably engaged with at least one window frame slot, and a tilt lock latch mechanism having a lever for manual actuation, the tilt lock latch mechanism being attached to the first sash and including a retractable element coupled to the lever, the retractable element engaging the window frame slot, the tilt lock latch mechanism being attached to the first sash, the method comprising the steps of:
- moving the lever to a first angular position to lock the first sash relative to the second sash and prevent relative sliding movement therebetween;
- moving the lever to a second angular position to permit relative sliding movement of the first window sash and the second window sash;
- and
- moving the lever to a third angular position to retract the retractable element from the window frame slot to permit tilting of the first window sash relative to the second window sash.
Dependencies are inferred from the claim text.