Locks – Operating mechanism – Key
Reexamination Certificate
2011-01-25
2011-01-25
Barrett, Suzanne D (Department: 3673)
Locks
Operating mechanism
Key
C070S383000, C070S384000, C070S493000, C070S495000
Reexamination Certificate
active
07874191
ABSTRACT:
A cylinder lock includes a lock housing receiving a plug assembly that has a key hole, tumbler pieces having respective toothed parts, and a re-keying unit. The re-keying unit has rotatable gear wheels engaged releasably with the respective toothed parts to reposition the respective tumbler pieces. The gear wheels disengage from the respective tooth parts by moving transversely of a longitudinal axis of the lock housing. Re-keying methods are also disclosed.
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Chen Po-Yang
Chiang Wei-Liang
Kuo Ching Chuan
Lee Kun-Chen
Wu Rong-Faa
Barrett Suzanne D
Boswell Christopher
Ladas & Parry LLP
Tong Lung Metal Industry Co. Ltd.
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