Locks – Operating mechanism – Key
Patent
1979-03-30
1980-10-28
Wolfe, Robert L.
Locks
Operating mechanism
Key
70413, 33174F, E05B 1920
Patent
active
042299594
ABSTRACT:
A novel method and apparatus for opening a magnetic cylinder lock of the type having an outer cylinder, a rotatable inner cylinder disposed within the outer cylinder, one or more magnetic pins disposed within chambers of one of the cylinders for engaging the other cylinder to prevent the inner cylinder from rotating, and a keyway within the inner cylinder for insertion of a magnetic key to displace each pin and release the inner cylinder, thereby opening the lock. A probe is provided for insertion within the keyway to determine the presence and polarity orientation of each magnetic pin by detecting its magnetic field. An indexing arm within the probe abuts the lock and provides a signal representative of the position of each pin chamber. Sensor circuitry correlates a signal from the probe representative of the presence and polarity orientation of each pin with a signal from the indexing arm representative of the position of each pin chamber and displays the "combination" of the lock. A selectively-actuable master key with a plurality of electromagnets imbedded therein is provided for insertion into the keyway and a power supply is used to actuate the electromagnets momentarily while turning the master key to displace each pin and open the lock.
REFERENCES:
patent: 2437374 (1948-03-01), Burroughs
patent: 4073166 (1978-02-01), Clark
LandOfFree
Method and apparatus for opening a 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 Method and apparatus for opening a lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for opening a lock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-261860