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US 4,572,348 AGranted
Lock, particularly a coin-deposit lock
AssigneeSchulte-Schlagbaum Aktiengesellschaft
InventorsArmin Eisermann, Heinz ten Eicken, Kurt Obenluneschloss, Diethard Geiger
Life of this patent
Estimating the term…
Abstract
A lock provides a locking function after the insertion of a coin into it. The lock includes a punch card scanner which serves to enable the lock to provide the locking function. The lock includes a moveable bolt which is responsive to the scanner and a detent-like blocking catch. Movement of the bolt toward a locked position urges an inserted coin to lift the blocking catch, thereby freeing the bolt for further movement.
Claims15
A lock adapted to be lockable upon insertion of a punch card having a hole therein, said lock comprising:
- a lock case having a shaft for insertion therein of said punch card;
- a bolt having a blocking shoulder moveably mounted in said case;
- a counter-magnet mounted in said bolt in front of said blocking shoulder;
- a punch card scanning device including,
- an axially polarized magnetic pin moveably mounted in a bolt-side wall of said shaft for free movement transverse to movement of said bolt, wherein in an unlocked position of the bolt said counter-magnet pulls said magnetic pin into a bolt blocking position in front of said blocking shoulder;
- and wherein upon movement of said bolt from said unlocked position, said magnetic pin is released for movement from said blocking position into the hole in said punch card when said hole is aligned with said magnetic pin.
3 more elements
Dependencies are inferred from the claim text.