Clutch mechanism couplable to door locks with locking bolt...

Details Clutch mechanism couplable to door locks with locking bolt... Clutch mechanism couplable to door locks with locking bolt...

2011-08-23

2011-08-23

Barrett, Suzanne D (Department: 3673)

Locks

Special application

For closures

C070S218000, C070S222000, C070S283000

Reexamination Certificate

active

08001818

ABSTRACT:
A clutch mechanism permits a pulling movement to be transferred or not to the bolt of a lock when turning the internal or external handles attached to separate square-section shafts belonging to clutch elements and which can have independent rotation or they can do so integrally. A first clutch element connected to the outside handle possesses a prismatic projection with a radial orifice into which fits a pulling pin assisted by a spring and which is able to be displaced in order to be introduced into a slot of a second clutch element. The movement is controlled by a motor with a worm-screw linked to a spring which can displace a thruster rocker arm which makes contact with the pulling pin. The mechanism also includes an emergency device having a rod and another spring linked to the thruster rocker arm.

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