Pick-proof lock

Details Pick-proof lock Pick-proof lock

1978-04-12

1980-03-25

Wolfe, Robert L.

Locks

Operating mechanism

Key

E05B 6300

Patent

active

041943791

ABSTRACT:
A pick-proof lock of the cylinder type primarily intended for use in doors, which includes a locking collar or sleeve slidably mounted around a portion of the cylinder plug and which contains a notch to receive a spring pressed pin which is contained in the cylindrical shell of the lock. The collar or sleeve is slidably and rotatively received in the shell and spring pressed for engagement of its notch with the pin, whereby rotation of the plug within the shell can only be accomplished to effect unlocking of the lock when the spring urged locking collar has been displaced rearwardly of the lock from a projected locking position to a retracted unlocking position. Since the locking collar and the pin which locks said collar to the shell do not communicate with the keyway of the plug, tools and other instruments normally used for picking locks are ineffective in picking the lock.

REFERENCES:
patent: 3216230 (1965-11-01), Falk
patent: 3455130 (1969-07-01), Basseches
patent: 3494157 (1970-02-01), Coker
patent: 3670540 (1972-06-01), Fernandez

Affiliated with

Also associated with

Rating

Pick-proof 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 Pick-proof lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pick-proof lock will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1396919