Door lock
OwnerJimmie L. Hopeinventor
Life of this patent
Estimating the term…
Abstract
A door lock for use particularly with sliding patio doors. The lock assembly includes a rotary actuator (door knob) connected to a shaft which drives a crank connected, in turn, to one or more spring-biased bolt rods and operable through the crank to shift the bolt rod to its spring-biased, door-locking position. Stops are positioned to stop the movement of the crank in the locking and unlocking positions of the bolt rod, respectively. Rotary interengaging means such as a pair of meshing gears releasably connect the crank to the shaft assembly. A latch maintains the spring-biased bolt rod releasably in its door-locking position when the gears are meshed. A trip disengages the gear when the bolt rod is in its spring-biased, door-locking position, thereby actuating automatic unlocking of the door.
Claims12
A door lock comprising:
- (a) a rotary actuator,
- (b) means for mounting the actuator on the door,
- (c) a shaft assembly connected for rotary movement to the actuator,
- (d) at least one spring-biased bolt rod mounted on the door for reciprocation between door-locking and door-unlocking positions,
- (e) a crank connected to the bolt rod and operable to shift the bolt rod to its spring-biased door-locking position,
- (f) stop means positioned to stop the movement of the crank in the locking and unlocking positions of the bolt rod,
- (g) rotary interengaging means releasably connecting the crank to the shaft assembly,
- (h) a latch operable to maintain the spring-biased bolt rod releasably in its door-locking position, and
- (i) trip means arranged for disengaging the rotary interengaging means when the bolt rod is in its spring-biased, door-locking position, thereby actuating automatic unlocking of the door.
Dependencies are inferred from the claim text.