Patent ID: 6058744
Filing Date: 2000-05-09
Classification: E05B,Y10T

Abstract:
A combination lock comprising:a casing (1);a pivotal latch means (2) adapted to be locked in an aperture (A) of an object to be locked including a computer (P) and the like; said pivotal latch means (2) including: a fixed latch member (21) protruding forwardly from a latch holder (22) secured to a front portion of the casing (1), and a pivotal latch member (23) pivotally mounted in the latch holder (22); with the pivotal latch member (23) having a front hook portion resiliently biased upwardly to be combinable with at least a fixed front hook portion of the fixed latch member (21) to obtain a cross sectional area of the fixed latch member (21) and the pivotal latch member (23) to be slightly less than an area of the aperture (A) of the object in order to be withdrawn through the aperture (A) when unlocking the combination lock; and upon a downward biasing of the front hook portion of the pivotal latch member (23) to allow the two front hook portions of the two latch members (21, 23) to be separately extended and locked in the aperture (A) of the object, the object will be locked; said pivotal latch member (23) including: a latch lever (231) pivotally mounted in a biasing chamber (222) formed in a cylindrical portion (221) protruding rearwardly from the latch holder (22), an actuating end portion (233) formed on an inner end of the latch lever (231) opposite to the front hook portion of the latch lever (231) and a tensioning spring (234) tensioned between the cylindrical portion (221) and the actuating end portion (233) of the latch lever (231) for normally resiliently depressing the actuating end portion (233) downwardly and for biasing the front hook portion of the latch lever (231) upwardly to coincide the front hook portion of the pivotal latch member (23) with a pair of fixed front hook portions of the fixed latch member (21) for unlocking the pivotal latch means (2) as withdrawn from the aperture (A) of the object;a plurality of dials (3) and sleeves (4) rotatably mounted in said casing (1);a control means (5) resiliently biasing said pivotal latch member (23) to be separately extended from said fixed latch member (21) to allow said two latch members (23, 21) to be locked in the aperture (A) of the object to be locked; and said control means operatively retracted for biasing said pivotal latch member (23) to be combinable with the fixed latch member (21) to be withdrawn from said aperture (A) of said object (P) when unlocked; and a fastening device (7) for securing said casing (1) to a fixture (F); anda combination-changing means (8) for resetting a new combination for locking the combination lock.