High security padlock construction

Locks – Portable – Padlocks

Reexamination Certificate

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Details

C070S025000, C070S03800C, C070S312000

Reexamination Certificate

active

07117698

ABSTRACT:
By providing a unique cam member which cooperatingly controls shackle locking elements to move between a first locked position and a second unlocked position, an effective, easily produced, high security padlock is achieved. Furthermore, the high security padlock of the present invention is constructed, in one embodiment, for being controlled by use of a combination system and, in an alternate embodiment, for being controlled by using either a combination system or a key and tumbler system.

REFERENCES:
patent: 3720082 (1973-03-01), Feinberg et al.
patent: 5125248 (1992-06-01), Ling
patent: 5953940 (1999-09-01), Ling
patent: 6029481 (2000-02-01), Lai
patent: 6176109 (2001-01-01), Tsui
patent: 6363758 (2002-04-01), Ling
patent: 6470718 (2002-10-01), Yang
patent: 6474116 (2002-11-01), Lai
patent: 6729166 (2004-05-01), Lai

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