Compound tools – Wrench
Reexamination Certificate
2001-10-31
2003-06-10
Wilson, Lee D. (Department: 3723)
Compound tools
Wrench
C007S118000, C007S168000, C081S440000
Reexamination Certificate
active
06574817
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention is related to a hand tool, and more particularly to a complex tool kit composed of two tool assemblies. The complex tool kit can be easily carried and used to drive screwed connecting members of a bicycle frame.
U.S. Pat. No. 5,711,042 discloses a tool combination for bicycle as shown in
FIGS. 1 and 2
. The tool combination includes two kits of foldable tools
10
,
20
locked with each other by a fixing device
11
. Each foldable tool kit has a main body
12
,
22
and several tools pivotally connected with the main body
12
,
22
by a bolt.
The tool kits are used to assemble/disassemble or repair or adjust the structure of the bicycle.
Many parts of the bicycle frame are fixed thereon by a set of screwed connecting members including a hexagonal bolt and a nut. The two tool kits are used to respectively drive the bolt and nut. However, the two tool kits
10
,
20
have large volume and after connected by the fixing device
11
, the volume will be even larger so that such tool kits can be hardly conveniently carried. Furthermore, multiple hexagonal wrenches
13
~
17
with different sizes are pivotally connected with one tool kit
10
for driving hexagonal bolts. Three fixing wrenches
23
,
24
,
25
with different sizes and two hexagonal wrenches
26
,
27
are pivotally connected with the other tool kit
20
for driving nuts. However, the number of the fixing wrenches is limited so that they can drive only a few sizes of nuts and can be hardly applied to all kinds of nuts of the bicycle frame. Especially, in the case that a user himself/herself adds articles to the bicycle frame, the nuts used for such articles will have various sizes to which the fixing wrenches cannot be applied.
In addition, the above tool kits have another shortcoming as follows: It often takes place that the hexagonal wrench and fixing wrench suitable for a certain set of bolt and nut are mounted on the same tool kit
20
. For example, the hexagonal wrench
26
and the fixing wrench
25
must be cooperatively used. At this time, it is impossible to at the same drive the bolt and the nut and only one of the bolt and nut can be driven. Under such circumstance, the bolt and nut are often synchronously driven and cannot be tightened or untightened. Also, it is quite inconvenient to use the chain-cutting tool
28
of the tool kits.
FIG. 3
shows another conventional tool
30
for bicycle. The tool
30
has multiple fitting holes
32
with different sizes. The top end of the tool
30
is detachably connected with a chain cutter
34
. The number of the sizes of the fitting holes
32
is limited so that the tool
30
can be hardly applied to all sizes of nuts. Moreover, the tool is one-piece tool so that it is still impossible to drive the bolt at the same time and effectively tighten or untighten the screwed connecting members.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide a complex tool kit composed of two tool assemblies which have simple structure and can be easily carried.
It is a further object of the present invention to provide a complex tool kit composed of two tool assemblies which are able to effectively drive all screwed connecting members of the bicycle frame and assemble/disassemble the chain of the bicycle.
It is still a further object of the present invention to provide a complex tool kit which are applicable to all sizes of nuts of the bicycle frame.
The present invention can be best understood through the following description and accompanying drawings wherein:
REFERENCES:
patent: 4103378 (1978-08-01), Granados
patent: 4157594 (1979-06-01), Raabe
patent: 4967435 (1990-11-01), Seals
patent: 5140736 (1992-08-01), Hsiao
patent: 5251341 (1993-10-01), Seals
patent: 5655242 (1997-08-01), Chuang
patent: 5711042 (1998-01-01), Chuang
patent: 5970553 (1999-10-01), Lin
patent: 6044508 (2000-04-01), Chuang
patent: 6112351 (2000-09-01), Hawkins et al.
patent: 6286168 (2001-09-01), Woodruff et al.
Thomas David B.
Troxell Law Office PLLC
Wilson Lee D.
LandOfFree
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