3782147 is referenced by 29 patents and cites 3 patents.

A security lock adapted to be operated by magnetic induction and comprising a case, a bolting unit containing at least one group of magnets displaceably mounted in the case and at least one protective blocking member in the case arranged normally to engage with the bolting unit in detent fashion to prevent operation of the lock, the bolting unit being movable by magnets contained in a key for the lock to a position in which it is no longer engaged by the blocking member and in which operation of the lock is possible.

Title
Security locks
Application Number
05/205,654
Publication Number
3782147
Application Date
December 7, 1971
Publication Date
January 1, 1974
Inventor
Hallmann Hermann
Agent
Beaman & Beaman
Assignee
MRT Magnet Regeltechnik
IPC
E05b 47/00
E05B 47/00
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