Electronic lock actuator with helical drive member

Details Electronic lock actuator with helical drive member Electronic lock actuator with helical drive member

2011-04-05

2011-04-05

Barrett, Suzanne D (Department: 3673)

Locks

Operating mechanism

Using a powered device

C070S277000, C070S278100, C070S472000, C070S223000

Reexamination Certificate

active

07918114

ABSTRACT:
An actuator assembly is for a lock including a handle, a latch, a retractor for retracting the latch when the handle rotates, and a lock member displaceable between locked and unlocked positions, which either releasably couples the handle with the retractor or releasably prevents handle rotation. The actuator includes a motor having a shaft rotatable about an axis and a coupler spring disposed about the axis and having a first end coupled with the lock member and a second end. A drive member is coupled or integrally formed with the motor shaft and has a helical drive surface threadably engaged with the coupler spring second end, such that rotation of the shaft displaces the coupler spring along the axis to move the lock member between the locked and unlocked positions. Preferably, the drive member includes a spring coupled with the motor shaft and threadably engaged with the coupler spring.

REFERENCES:
patent: 5018375 (1991-05-01), Tully
patent: 5083122 (1992-01-01), Clark
patent: 5421178 (1995-06-01), Hamel et al.
patent: 5628216 (1997-05-01), Qureshi et al.
patent: 5694798 (1997-12-01), Nunez et al.
patent: 7003993 (2006-02-01), Zehrung
patent: 2006/0042337 (2006-03-01), Su
Office Action from United Kingdom Patent Office for Application GB0800156.2 dated Sep. 30, 2009 (3 pages).
Office Action from New Zealand Patent Office for Application 564924 dated Sep. 11, 2009 (2 pages).

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