Combination lock

Details Combination lock Combination lock

2006-03-07

2006-03-07

Gall, Lloyd A. (Department: 3676)

Locks

Portable

Padlocks

C070S028000, C070S044000, C070S284000, C070S285000

Reexamination Certificate

active

07007520

ABSTRACT:
Provided is a combination lock capable of being opened by inserting a key into keyhole in addition to turning tumbler wheels to a set series of numbers. In the key opening operation key is turned to rotate shaft, cam, and shuttle assembly for aligning tabs with the grooves, causing the cam to contact and push an L-shaped member laterally to compress a spring-loaded member for opening a gap between the leg and the shackle with a distance between the shaft and a blind end of a channel of the shuttle assembly being decreased to a minimum as the channel slides relative to the shaft, and moving the tabs along the grooves to project the shuttle assembly from one end of a bore of a spring-loaded moveable member to the other end thereof.

REFERENCES:
patent: 4860561 (1989-08-01), Hwang
patent: 6082155 (2000-07-01), Su
patent: 6363757 (2002-04-01), Yu
patent: 6381997 (2002-05-01), Chen
patent: 6792778 (2004-09-01), Chen
patent: 6843080 (2005-01-01), Yu
patent: 6928842 (2005-08-01), Huang
patent: 2005/0039500 (2005-02-01), Yu

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