Locks – Special application – For closures
Patent
1978-09-20
1980-08-26
Wolfe, Robert L.
Locks
Special application
For closures
70409, E05B 6506
Patent
active
042189047
ABSTRACT:
A double deadbolt lock having a housing in which two latch bolts are mounted for reciprocal movement between an extended locking position and a retracted unlocked position. The bolts are in transverse alignment so as to have an elongated face on one opposite an elongated face on another. Each of the two opposite faces has a pattern of alternate, allochirally arranged lands and grooves extending obliquely away from one end of the bolts toward the other end. The housing has a keyhole extending therethrough in alignment with the said opposite faces of the bolts. The key for locking and unlocking the bolts has a shaft having a cross-sectional size and shape corresponding to the size and shape of the hole. Opposite edges of the shaft have alternate lands and grooves complementary respectively to corresponding lands and grooves of the latch bolts. For operating the lock, the key has a reciprocal path of travel through the keyhole, during which the lands and grooves of the shaft engage respective grooves and lands of the latch bolts for linear movement therein, so that when the shaft is moved linearly in one direction the latch bolts are moved linearly to an extended locking position, and when moved linearly in the opposite direction, the latch bolts are retracted linearly to an unlocked position.
REFERENCES:
patent: 1510562 (1924-10-01), Segal
patent: 2301155 (1942-11-01), Sebestyen
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