Patent ID: 6755059
Filing Date: 2004-06-29
Classification: E05B,F41A,Y10S,Y10T

Abstract:
A combination lock comprising:a housing having a locking channel, a locking pin in said housing movable between an unlocked position and a locked position extending into said channel of said housing, said locking pin comprising a plurality of spring biased nested cylinders for extending into said channel, an elongated tumbler shaft having a latch dog for engaging said locking pin in said locked position, at least two radially extending keys, and movable longitudinally between a set position engaging said locking pin and a released position disengaging said locking pin, at least two rotatable tumblers on said tumbler shaft, each of said tumblers having a plurality of index positions and a keyway clearing said keys when the tumbler shaft is in said released position, and at least two tumbler buttons extending from said housing for actuating respective tumblers by rotating an actuated tumbler one index position at a time to a predetermined index position, whereby upon rotation of the tumblers to their respective predetermined index positions, the tumbler shaft is longitudinally movable to release the locking pin.