Clutch mechanism for electronic locks

Details Clutch mechanism for electronic locks Clutch mechanism for electronic locks

2005-01-25

2005-01-25

Mah, Chuck Y. (Department: 3676)

Locks

Operating mechanism

Using a powered device

C070S472000, C070S222000

Reexamination Certificate

active

06845642

ABSTRACT:
This mechanism is intended for being located in the inner escutcheon of the lock and its purpose is to minimize the forces transmitted, thereby preventing premature wear, as well as being able to be adaptable to any lock. Its structure permits to minimize the turning of the handle or outer operating knob under no load.The outer escutcheon (3) holds the key reader (4) and an outer knob (5) while the inner escutcheon (6) contains the electronic control circuit (7) powered by batteries (8), the clutch mechanism (9) and an inner operating knob (10). Exiting from the clutch mechanism (9) are two concentric shafts (21, 26), one of which acts on the tumbler (2) of the lock and the other (26) which rotates freely in its interior and to which the outer knob (5) is connected.A validated key activates an electric motor (51) or similar which displaces a collar (28) causing the clutch element (27) to bring both concentric shafts (21, 26) together temporarily, forming a single unit and permitting the opening of the lock.

REFERENCES:
patent: 4956984 (1990-09-01), Chi-Cheng
patent: 5018375 (1991-05-01), Tully
patent: 5475996 (1995-12-01), Chen
patent: 5732580 (1998-03-01), Garnault et al.
patent: 5934117 (1999-08-01), Shen
patent: 5960656 (1999-10-01), Yao
patent: 6021654 (2000-02-01), McCaa
patent: 6041630 (2000-03-01), Shen
patent: 6189351 (2001-02-01), Eagan et al.
patent: 6334348 (2002-01-01), Ming-Chih

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