Bit key lock

Details Bit key lock Bit key lock

1975-08-29

1977-03-01

Wolfe, Robert L.

Locks

Operating mechanism

Key

70409, E05B 2100

Patent

active

040096009

ABSTRACT:
A bit key lock is improved by the provision of at least one deadplate fixedly position nonsymmetrically with respect to the lock between tumblers so as to interfere with the turning of any key not allowing for the presence of the deadplate. By reason of the nonsymmetrical positioning of the deadplate, different keys are required to actuate the lock from opposite sides. A master key may be provided by allowing for the alternate position of the deadplate relative to the opposite sides of the lock.

REFERENCES:
patent: 55244 (1866-06-01), Corbett
patent: 289435 (1883-12-01), Moore
patent: 306976 (1884-10-01), Thumshirn
patent: 321306 (1885-06-01), Markham
patent: 2143425 (1939-01-01), Schuyler
Charles Tomlinson -- Rudimentary Treatise on the Construction of Locks., May 23, 1935, pp. 29-31.

Affiliated with

Also associated with

Rating

Bit key lock does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bit key lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bit key lock will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1346598