Tools – Wrench – screwdriver – or driver therefor – Handle or shank
Reexamination Certificate
2001-08-10
2002-07-02
Hail, III, Joseph J. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Handle or shank
C081S177600
Reexamination Certificate
active
06412374
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention is related to a hand tool, and more particularly to a multisection wrench in which the stem body is composed of multiple connecting units which are pivotally connected with each other. The stem body can be bent and located in a desired curved state.
FIGS. 1 and 2
show a conventional multisection wrench
10
. The stem body
12
of such wrench
10
includes several identical units
14
each of which is composed of multiple plate members
13
. Each two adjacent units
14
are connected by a rivet
16
, whereby the stem body
12
can be curved in accordance with the conditions of a working site.
The above wrench is disadvantageous in that the respective units are not located and are always loosened. Therefore, in use, the stem body often swings and it is hard to fit the jaws
17
or socket
18
onto a screwed member. Moreover, a user must hold the stem body with both hands so as to avoid undesired swinging thereof. This is quite inconvenient for the user.
Furthermore, it is quite time-consuming to assemble the stem body
12
. Moreover, the head sections at two ends of the rivet
16
will protrude from the stem body so that the appearance of the wrench is poor and the user will feel uncomfortable when holding the stem body.
FIGS. 3 and 4
show another type of multisection wrench
20
. Such wrench includes multiple units
22
which are pivotally connected to form a ring. Each unit
22
further has an outward extending jaw end
24
. Each two adjacent units are riveted by a connecting block
26
.
The above wrench
20
has several jaw ends
24
with different sizes for application to different dimensions of screwed members. However, the units
22
are also simply connected by rivets so that the stem body also tends to swing. In addition, the head sections at two ends of the rivet
25
and two sides
241
of the jaw end will protrude from the stem body so that the user will feel uncomfortable when holding the stem body. Moreover, such wrench is quite heavy and hard to operate as well as expensive.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide a multisection wrench in which the stem body is composed of multiple connecting units which can be located. Therefore, the stem body can be kept in a curved state without swinging.
It is a further object of the present invention to provide the above multisection wrench which can be comfortably held.
The present invention can be best understood through the following description and accompanying drawings wherein:
REFERENCES:
patent: 1316398 (1919-09-01), Steininger
patent: 2978938 (1961-04-01), Nalley
patent: 3188895 (1965-06-01), Jones
patent: 4606247 (1986-08-01), Graham
patent: 5305668 (1994-04-01), Davis
patent: 5943925 (1999-08-01), Huang
patent: 6138533 (2000-10-01), Turtle
Danganan Joni B.
Hail III Joseph J.
Troxell Law Office PLLC
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