Magnet card type lock

Details Magnet card type lock Magnet card type lock

1991-12-24

1993-03-16

Luebke, Renee S.

Locks

Operating mechanism

Using a powered device

70413, E05B 4700

Patent

active

051933713

ABSTRACT:
A magnet card type lock includes an outer case, a slider having a key hole slit formed therein, an engagement member firmly secured to the outer case, a plurality of tumbler holes formed in conformity with a predetermined pattern of arrangement, a plurality of magnet tumblers bridged between the case and the slider, a projection integrated with the slider to be engaged with a locking mechanism and a magnet card adapted to be inserted into the key hole slit of the slider to serve as a fellow key. To prepare a specific key difference among a number of magnet card type locks, a predetermined number of tumbler holes are selected from the tumbler holes which extend at a substantially right angle relative to the slider and the outer case. The magnet card is formed with a pluraltiy of apertures some of which are immovably filled with permanent magnets corresponding to the selected number of tumbler holes. When the magnet card is inserted into the key hole slit of the slider, the magnet tumblers are displaced away from the bridged state so as to allow the slider to be pushed in the downward direction, whereby the lock is released from the locked state. A projection plate including a projection may be slidably inserted between the slider and the case. In this case, a plurality of magnet tumblers and a plurality of pin tumblers are received in the selected number of tumbler holes.

REFERENCES:
patent: 2931953 (1960-04-01), Barney
patent: 3584484 (1971-06-01), Hallmann et al.
patent: 3654782 (1972-04-01), Heimann
patent: 3660999 (1972-05-01), Janzen
patent: 3855827 (1974-12-01), Hallmann et al.
patent: 3995460 (1976-12-01), Sedley
patent: 4133194 (1979-01-01), Sedley et al.
patent: 4932228 (1990-06-01), Eisermann
patent: 5074136 (1991-12-01), Kim et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-345059