Combination lock having a knob rotatably mounted therein to...

Details Combination lock having a knob rotatably mounted therein to... Combination lock having a knob rotatably mounted therein to...

2008-01-15

2008-01-15

Gay, Jennifer H. (Department: 3676)

Locks

Special application

For control and machine elements

C070S298000, C070S315000, C070S33300A

Reexamination Certificate

active

07318331

ABSTRACT:
A combination lock has a plurality buttons movably received in the casing and a knob rotatably received in the casing. When specific buttons are pressed downward, rotating the knob from a first position to a second position, the balls in the downward movement buttons are limited in the limiting holes in the buttons by the abutting faces of a frame. Rotating the knob to a third position allows pins of the pressed buttons to be secured and limited in the longitudinal paths. Pressing the returning rod is able to release the arms which are received in the arm stays in the pressed arms. Rotating only the core relative to the combination of the rotator and the body is able to drive the second abutting block to move so as to return all the pins back to their original positions to be ready for next use.

REFERENCES:
patent: 3115028 (1963-12-01), Windle
patent: 4671084 (1987-06-01), Lin
patent: 4748833 (1988-06-01), Nagasawa
patent: 4936894 (1990-06-01), Larson et al.
patent: 6272889 (2001-08-01), Burleigh et al.
patent: 6334346 (2002-01-01), Wang
patent: 6598434 (2003-07-01), Yang
patent: 7043948 (2006-05-01), Wang
patent: 2004/0261477 (2004-12-01), Wang
patent: 2005/0210937 (2005-09-01), Okuda

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