Back to results
US 6,032,985 AGranted
Latch assembly
AssigneeHarrow Products, Inc.
InventorRyan D. Cutter
Life of this patent
Estimating the term…
Abstract
A latch device, which is especially adapted for an exit bar, incorporates a trigger assembly. When the latch device is retracted and released, as ordinarily occurs when the door is opened, the latch bolt is biased to an intermediate extended position. The trigger engages the rim of the strike plate which in turn releases a retainer arm and allows the latch bolt to project to an extended position within the strike thereby providing a latch function of high integrity.
Claims21
A latch device for an exit bar comprising:
- a frame comprising a latch face defining an opening;
- a latch bolt pivotably mounted on a first pin to said frame and projectable through said opening;
- a spring for biasing said latch bolt toward an extended position;
- a retraction assembly for retracting said latch bolt into said opening;
- a retainer assembly for retaining said latch bolt in an intermediate position upon release of said retraction assembly;
- and
- a trigger assembly comprising a trigger with a first end pivotably mounted to said frame and projectable through said latch face and depressible means for releasing said retainer assembly so that said latch bolt projects to the extended position.
4 more elements
A latch device for an exit bar comprising:
- a frame defining an opening;
- a bolt assembly mountable to said frame and comprising a latch bolt pivotable about a first pin to an extended position and retractable to a retracted position;
- a retainer assembly for retaining said latch bolt in an intermediate position between said extended and retracted positions;
- a retraction assembly for retracting said latch bolt toward said retracted position;
- and
- a trigger assembly comprising a trigger with a first end pivotably mounted to said frame and activatable means for releasing said retainer assembly so that said latch bolt projects from the intermediate position to the extended position.
3 more elements
A latch device for an exit bar comprising:
- a frame defining an opening;
- a bolt assembly mountable to said frame and comprising a latch bolt pivotable about a first pin through said opening to an extended position and retractable to a retracted position, a second pin extending from said bolt;
- a retainer assembly for retaining said latch bolt in an intermediate position between said extended and said retracted positions, said retainer assembly including a pivotal arm having a retention notch, said second pin retainable in said notch in said intermediate position;
- a spring for biasing said pivotal arm into engagement with said trigger assembly;
- a retraction assembly comprising a depressible member for retracting said latch bolt toward said retracted position;
- and
- a trigger assembly comprising a trigger biased to an extended position and retractable to a retracted position with a transverse lug which engages said pivotal arm to release said second pin from said retention notch so that said latch bolt projects from the intermediate to the extended position.
4 more elements
Dependencies are inferred from the claim text.