Locks – Portable – Padlocks
Reexamination Certificate
2000-03-21
2001-05-08
Gall, Lloyd A. (Department: 3627)
Locks
Portable
Padlocks
C070S052000
Reexamination Certificate
active
06227016
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
1. The present invention relates to a cable lock assembly.
2. Description of the Related Art
A conventional cable lock in accordance with the prior art shown in
FIG. 12
comprises two casings
50
coupled with each other, an insertion hole
52
defined by the two casings
50
, an elongated guide slot
54
having a smaller size defined by the two casings
50
and connecting to the insertion hole
52
, and a flexible cable having a first end
42
secured between the two casings
50
, and a second end
40
extending into the guide slot
54
through the insertion hole
52
and including an enlarged head
44
retained by the bottom of the guide slot
54
.
However, a tool such as a screwdriver can be inserted into a space “S” between the insertion hole
52
and the guide slot
54
to press the two casings
50
outward so as to increase the dimension of the guide slot
54
. When the size of the guide slot
54
is increased to exceed the diameter “W” of the enlarged head
44
of the second end
40
of the cable, the enlarged head
44
will be easily pulled to detach from the guide slot
54
.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a cable lock assembly comprising a lock body including a first casing, and a second casing securely coupled with the first casing and defining a locking groove which includes an insertion hole, and an elongated retaining slot connecting to the insertion hole and having a dimension smaller than that of the insertion hole; and a flexible cable having a first end secured to the second casing and a second end including a locking block detachably received in the locking groove. The locking block of the cable has a size equal to that of the insertion hole and greater than that of the retaining slot.
The first casing has a top edge defining a depression, and the second casing has a top edge including a top plate protruding outward and secured in the depression, and a plurality of reinforcing ribs each mounted on a bottom of the top plate.
The cable lock assembly further comprises an upright number wheel set mounted in the lock body and including a sleeve secured in the lock body, an actuating rod movably mounted in the sleeve, and a support plate secured on a top end of the actuating rod to move therewith; and a closing block supported on the support plate to move therewith and located under the insertion hole of the locking groove for detachably closing the insertion hole.
The number wheel set further includes a plurality of dials rotatably mounted on the sleeve for controlling movement of the actuating rod, and a biasing member mounted on the actuating rod and urged between the support plate and a top one of the dials.
The lock body includes a pivot shaft secured to the second casing, and the closing block defines an elongated guide slot for receiving the pivot shaft.
The support plate has one end including a side wall extending upward, and a first inclined surface located between the side wall and the support plate, and the closing block includes an abutting lug extending outward and having a second inclined surface detachably abutting the first inclined surface of the support plate.
The lock body includes a pivot axle secured to the second casing, and the cable lock assembly further comprises a torsion spring pivotally mounted on the pivot axle and having a first end secured in the lock body and a second end detachably abutting the closing block.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
REFERENCES:
patent: 561524 (1896-06-01), Root
patent: 616647 (1898-12-01), Woodward
patent: 839795 (1906-12-01), Wilcox
patent: 1051139 (1913-01-01), Lovett
patent: 1139986 (1915-05-01), Lovett
patent: 3297333 (1967-01-01), Schwedt et al.
patent: 4819464 (1989-04-01), Kuo
patent: 5560232 (1996-10-01), Chen
patent: 5755121 (1998-05-01), Crass
patent: 5786759 (1998-07-01), Ling
patent: 5868012 (1999-02-01), Chun-Te et al.
patent: 5918489 (1999-07-01), Yang
patent: 2240578 (1991-08-01), None
Gall Lloyd A.
Rosenberg , Klein & Lee
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