Electrically controlled door lock
First Claim
1. An electrically controlled door lock comprisinga lock frame for mounting in said door,a knob spindle rotatably supported by said frame,a lock bolt retractor supported by said frame,means on said spindle for actuating said retractor upon rotation of said spindle,means for preventing said spindle from rotating including a locking element movable between a spindle locking position and a spindle unlocking position;
- spring means urging said locking element into said locking position,electromagnetic means for moving said locking element into said unlocking position,a latch carried by said locking element, andsaid spring means urging said latch into engagement with said retractor whereby to latch said locking element in said unlocking position,said retractor being effective upon actuation by said spindle to release said latch whereby to enable said spring means to move said locking element to said locking position.
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Accused Products
Abstract
A latch bar is connected to the plunger of a solenoid and is movable endwise to release an exterior knob spindle to enable the spindle to actuate a latch bolt retractor. A latch carried by the latch bar is held by the retractor to maintain the latch bar open until the retractor is later actuated by the spindle, thereby enabling a single electric pulse to effect release of the lock bar.
160 Citations
5 Claims
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1. An electrically controlled door lock comprising
a lock frame for mounting in said door, a knob spindle rotatably supported by said frame, a lock bolt retractor supported by said frame, means on said spindle for actuating said retractor upon rotation of said spindle, means for preventing said spindle from rotating including a locking element movable between a spindle locking position and a spindle unlocking position; -
spring means urging said locking element into said locking position, electromagnetic means for moving said locking element into said unlocking position, a latch carried by said locking element, and said spring means urging said latch into engagement with said retractor whereby to latch said locking element in said unlocking position, said retractor being effective upon actuation by said spindle to release said latch whereby to enable said spring means to move said locking element to said locking position. - View Dependent Claims (2, 3)
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4. An electrically controlled door lock comprising
a rotatable door knob spindle, means for preventing said spindle from rotating including a locking element movable lengthwise of said spindle from a spindle unlocking position to a spindle locking position, spring means urging said locking element into said locking position, electromagnetic means including a plunger movable lengthwise of said spindle; -
means pivotally connecting said plunger to said locking element whereby energization of said electromagnetic means causes said plunger to move said locking element to said unlocking position, a spring biased latch for latching said locking element in said unlocking position upon movement of said locking element into said unlocking position, and means operable by said spindle upon rotation thereof for releasing said latch whereby to enable said spring means to move said locking element to said locking position.
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5. An electrically controlled door lock comprising
a lock frame for mounting in said door, an exterior door knob spindle rotatably supported by said frame, an interior door knob spindle rotatably supported by said frame, a lock bolt retractor supported by said frame, means on said exterior spindle for actuating said retractor, means on said interior spindle for actuating said retractor independently of said exterior spindle, a locking element for preventing rotation of said exterior spindle, means supporting said locking element for movement lengthwise of said spindles between a spindle locking position and a spindle unlocking position, spring means urging said locking element into said locking position, solenoid means carried by said interior spindle for moving said locking element into said unlocking position, and a latch pivotally supported by said locking element, said spring means urging said latch into latching engagement with said retractor whereby to latch said locking element in said unlocking position, said retractor being effective upon actuation by said exterior spindle to release said latch.
Specification