Locks – Operating mechanism – Combination and key
Reexamination Certificate
2001-06-28
2003-04-01
Gall, Lloyd A. (Department: 3676)
Locks
Operating mechanism
Combination and key
C070S285000, C070S03800C, C070S021000, C070S026000, C070S028000
Reexamination Certificate
active
06539761
ABSTRACT:
BACKGROUND OF THE INVENTION
A conventional padlock, if provided with a key-operated locking mechanism therein, should be unlocked by a key. For someone, he or she does not like to carry a key or may lose the key easily, he or she would prefer to use a combination padlock rather than a key-operated padlock.
Comparatively, someone may dislike to use the combination lock due to poor vision to watch a small combination as shown on the combination lock and he or she may then prefer to use the key-operated padlock.
However, there is no padlock ever disclosed to provide the double-function padlock both for a key-operated lock and a combination lock.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a padlock including: a lock body; a shackle operatively locked in or unlocked from the lock body; a key-operated locking device formed in the lock body for operatively unlocking the shackle for unlocking the padlock by using a key, and a combination locking device juxtapositionally formed in the lock body for operatively unlocking the shackle for unlocking the padlock merely by dialing the combination to an unlocking number.
REFERENCES:
patent: 972171 (1910-10-01), Dupont
patent: 2163852 (1939-06-01), Pond
patent: 2931203 (1960-04-01), Check
patent: 2931204 (1960-04-01), Check
patent: 3448598 (1969-06-01), Niilola
patent: 3750431 (1973-08-01), Atkinson
patent: 3823584 (1974-07-01), Gill
patent: 4325240 (1982-04-01), Gable
patent: 4341099 (1982-07-01), Garro
patent: 4730467 (1988-03-01), Lebrecht
patent: 5953940 (1999-09-01), Ling
Gall Lloyd A.
Kyle Michael J.
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