Locks – Special application – For portable articles
Patent
1998-11-12
2000-05-23
Boucher, Darnell M.
Locks
Special application
For portable articles
70316, 70317, 70DIG44, E05B 6738
Patent
active
060653132
ABSTRACT:
A safety press-type zipper lock in which a lock casing is formed with two slots for placing therein tabs of a zipper slider. Each of a left and a right push buttons has a latch hook for locking with the tab. A bounding resilient plate is disposed in the slot for bouding the tab out of the slot. The numeral wheels serve to drive the notched wheel to rotate. The notched wheel serves to drive a sliding plate to shift within the lock casing. A numeral-changing button in a numeral-changing hole of the lock casing can be pressed by a sharp article, whereby a projection at one end of the numeral-changing button is engage with a protuberance of the sliding plate to lock the sliding plate for turning the numeral wheels to change the numerals. In the case that the tab fails to get into the proper position in the slot, the engaging block in the sliding plate is stopped by the left and right push buttons from moving, whereby the numeral wheels can be turned to drive the notched wheel to rotate and the notched wheel then shifts the sliding plate which compresses the compression spring. Under such circumstance, the notched wheel will be rotated along with the numeral wheels and the numerals will not change to avoid random code.
REFERENCES:
patent: 4155234 (1979-05-01), Bako
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patent: 4852372 (1989-08-01), Ling
patent: 4854139 (1989-08-01), Scelba
patent: 5092149 (1992-03-01), Bartsch et al.
patent: 5136864 (1992-08-01), Spiekermann et al.
patent: 5557954 (1996-09-01), Ling
patent: 5689979 (1997-11-01), Yu
patent: 5927110 (1999-07-01), Yu
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