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US 4,802,353 AGranted
Battery-powered door lock assembly and method
AssigneeIntelock Corporation
InventorsThomas E. Corder, James B. Mullin
Life of this patent
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AssigneeIntelock Corporation
InventorsThomas E. Corder, James B. Mullin
Estimating the term…
A lock assembly (21) including a movable bolt (28), a movable handle (23) coupled to move the bolt (28) to an open position and a locking assembly (29) mounted for movement between a locked position securing the bolt (28) against movement and an unlocked position releasing the bolt (28) is disclosed. The locking assembly (29) moves in response to movement of the handle (23) and is normally supported in an unlocked position. Movement of the lock assembly (29) by the handle (23) results in moving to a locked position prior to movement of the bolt (28) to an opened position. An electromagnet (31) responsive to an input signal is provided to hold the locking means (29) in the unlocked position and to prevent movement of the locking means (29) to the locked position upon movement of the handle (23). This holding of the locking assembly (29) in the unlocked position permits opening of the bolt (28). Any movement without energization of the solenoid (37, 38) produces immediate locking of the bolt (28) by locking assembly (29), while movement after energization of the electromagnet (31) holds the locking assembly (29) in an unlocked position.
In a lock assembly including movable bolt means, movable handle means coupled to move said bolt means to an open position, and locking means mounted for movement between a locked position securing said bolt means against movement and unlocked position releasing said bolt means, wherein the improvement in said lock assembly comprises:
In a lock assembly including movable bolt means, movable handle means biased to a released position and coupled to move said bolt means to an unbolted position, locking means mounted for movement between a locked position securing said bolt means and unlocked position releasing said bolt means in response to movement of said handle means, and electromagnetic means positioned to hold said locking means in said unlocked position upon energization thereof, and including solenoid means and an armature mounted for relative movement between an open position with an air gap therebetween and a closed position in contact with each other, one of said solenoid means and said armature being mounted for movement with said locking means and the other being fixedly mounted, wherein the improvement in said lock assembly comprises:
A method of operation of a lock assembly having a movable bolt, a movable handle having a released position and coupled to displace said bolt between a bolted position and an open position upon movement from said released position, and locking means including a movable member coupled for movement in response to movement of said handle and locking said bolt in said bolted position, and energizable electromagnet means including an armature carried by said movable member and a solenoid positioned to hold said movable member against movement when said electromagnet means is energized comprising the steps of:
Dependencies are inferred from the claim text.