Universal electronic latch retraction mechanism
AssigneeASSA ABLOY Access and Egress Hardware Group, Inc.
InventorsMichael Lorello, Ryan Piantek, Richard D. Sangster, Jr., Ian Sweeney
Life of this patent
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Abstract
An electronic latch retraction mechanism for an exit device may include an actuator including an output shaft coupled to a crank head, where the crank head is configured to rotate between first and second rotational positions. The electronic latch retraction mechanism may also include a crank coupled to the crank head such that the crank is at least partially rotatable to the crank head, where the crank is configured to engage a push bar of the exit device to move the push bar from the from the extended position to the retracted position when the crank head moves from the first rotational position to the second rotational position.
Claims20
An exit device
- comprising:
- a rail configured to be fixed to a door;
- a latch configured to move between an engaged position and a disengaged position;
- a push bar configured to move between an extended position, in which the
- latch is in the engaged position, and a retracted position, in which the
- latch is in the disengaged position;
- and a latch retraction mechanism, comprising:
- an actuator including an output shaft,
- a crank head coupled to the output shaft and configured to rotate between a first rotational position and a second rotational position, and
- a crank rotatably coupled to the crank head such that the crank is at least partially rotatable relative to the crank head, wherein the crank is operatively coupled to the push bar to move the push bar from the extended position to the retracted position when the crank head moves from the first rotational position to the second rotational position;
- wherein the crank and crank head are coaxial.
Dependencies are inferred from the claim text.