Latch driving unit for a door lock

Details Latch driving unit for a door lock Latch driving unit for a door lock

2007-03-27

2007-03-27

Glessner, Brian E. (Department: 3676)

Closure fasteners

Operators with knobs or handles

C292S347000, C292S358000, C070S224000

Reexamination Certificate

active

11072477

ABSTRACT:
A latch driving unit is assembled in an exterior knob assembly of a door lock. The latch driving unit includes a pin, a resilient member, a locking disk, a rotatable disk, a torsion spring, a cap and a strip. The strip removably extends through the cap, torsion spring, rotatable disk, locking disk, resilient member and the pin. If the strip is bent with an incorrect length, it can be removed from the latch driving unit and replaced with an intact strip. Thus, the exterior knob assembly is still useful after replacing the strip, and waste is avoided.

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