Locks – Portable – Padlocks
Reexamination Certificate
2003-11-25
2004-10-05
Gall, Lloyd A. (Department: 3676)
Locks
Portable
Padlocks
C070S026000, C070S306000, C070S311000, C070S312000, C070S317000, C070S324000
Reexamination Certificate
active
06799446
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a combination lock, more particularly one, which is comprised of single dial, and whose unlocking numeral combination can be changed.
2. Brief Description of the Prior Art
Combination locks are usually used on suitcases, cable locks etc. The user of a combination lock only has to remember the unlocking numeral combination, and won't have the various problems with use of a key, e.g. losing the key, and the key getting damaged.
a male member
10
, which has an insertion rod
101
having several aligned engaging teeth
102
equidistantly spaced along it;
a female member
20
having a holding tube
201
for insertion of the male member
10
; the holding tube
201
having a trench formed along the whole length thereof, and a fitting trench
205
on a tail end thereof; the engaging teeth
102
of the male member
10
will project out from the trench of the trench of the holding tube
210
after the male member
10
is inserted in the holding tube
201
;
several dials
202
arranged one next to another around the holding tube
201
of the female member
20
; each of the dials
202
has numerals spaced out on an outer side, and a gap (not numbered) on an inward edge;
locating rings
203
fitted in respective dials
202
and around the holding tube
201
for helping locating the dials
202
when the dials
202
are being operated; each locating ring
203
has a gap opposing the trench of the holding tube
201
; and
a C-shaped ring
204
engaged with the fitting trench
205
of the female member
20
for preventing the dials
202
and the locating rings
203
from separating from the female member
20
.
Thus, the lock will be in the locking position, wherein the male member
10
can't be separated from the female member
20
, after the male member
10
is inserted in the holding tube
201
, and the dials
202
turned such that the gaps thereof no longer oppose the trench of the holding tube
201
. And, the male member
10
will be separable from the female member
20
after the dials
202
are turned to the unlocking orientation according to the unlocking numeral combination, wherein the gaps of all the dials
202
will oppose the trench of the holding tube
201
to form a passage, which allows the teeth
102
to pass through.
However, the user has to rotate all of the dials
202
in operating the combination lock. Consequently, the lock is not convenient to use. And, the lock can't be changed in the unlocking numeral combination to suit the user needs.
SUMMARY OF THE INVENTION
It is a main object of the present invention to provide a combination lock, which has single dial, but it is as difficult to find out the unlocking numeral combination as it is to find out combinations of conventional locks that have several dials.
It is another object of the present invention to provide a combination lock, which can be changed in respect of the combination.
The present lock has a female member, a lock rod inserted in a holding tube of the female member, a dial, several actuating rings, locating rings, and co-moving rings. The female member is inserted through the dial, the actuating rings, the locating rings, and the co-moving rings at the holding tube, which is formed with a trench along the whole length thereof. The dial and the actuating rings are arranged side by side, and releaseably engaged with respective co-moving rings. The dial and an actuating ring adjacent thereto have a projecting portion on opposing sides while every two adjacent actuating rings have a projecting portion on opposing sides such that by means of operating the dial, the co-moving rings can be turned to unlocking position where all gaps thereof oppose the elongated trench of the female member to form a passage, which allows spaced teeth of the lock rod to pass through. The locating rings are arranged in the dial and the actuating rings for locating the same and producing ticktack when the dial is being rotated to cause rotation of the actuating rings together with it. The orientations of the dial and the actuating rings relative to respective co-moving rings are changed for changing the unlocking combination by operating the dial after the lock has been unlocked, and the dial and the actuating rings disengaged from the co-moving rings.
REFERENCES:
patent: 5636539 (1997-06-01), Tsai
patent: 5899099 (1999-05-01), Tsai
patent: 5934120 (1999-08-01), Kuo
patent: 6209368 (2001-04-01), Lee
patent: 6422051 (2002-07-01), Kuo
patent: 2004/0079122 (2004-04-01), Tsai
patent: 2004/0103700 (2004-06-01), Ling
Gall Lloyd A.
Jaeyou Co., Ltd.
Rosenberg , Klein & Lee
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