Metal working – Means to assemble or disassemble – Spring applier or remover
Reexamination Certificate
2003-06-19
2004-03-02
Hail, III, Joseph J. (Department: 3723)
Metal working
Means to assemble or disassemble
Spring applier or remover
C029S225000, C029S268000, C081S421000, C081S429000
Reexamination Certificate
active
06698074
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a pair of pincers for assembling and disassembling the springs of the brake shoes in a drum brake, particularly to one able to be handled with ease and less labor.
2. Description of the Prior Art
Conventionally, a brake drum of a brake device of an automobile is installed on the axle for rotating together, having two brake shoes
1
disposed oppositely in the interior, as shown in FIG.
1
. The two brake shoes
1
are respectively provided with plural hook holes
10
for receiving two hook ends
20
of strong springs
2
so as to always urge inward the two brake shoes
1
, and each brake shoe
1
is fixed on the outer side with a brake lining
11
made of a coarse material and able to endure abrasion. When the brake of an automobile is actuated, two brake shoes
1
force two brake linings
11
to move outward and press the inner sides of the brake drum and accordingly produce a great frictional force to control the wheels of an automobile to stop. But, these brake linings
11
will gradually be worn off after the brake is employed for long, and under this condition, the brake shoes
1
have to be replaced with new ones so as to maintain the proper function of the brake and ensure safety of driving.
For the present, the strong springs
2
tightly hooking the brake shoes
1
are forcefully disassembled by means of a pair of needle nose pliers. However, when a pair of needle nose pliers clamps the hook end
20
of the spring
2
to carry out assembling and disassembling, it is not kept stable by any fulcrum, therefore a user has to pull it with a very huge force, thus not only increasing difficulty in assembling and disassembling and wasting labor and time but also possibly resulting in damage to the tools or to the components of an automobile.
SUMMARY OF THE INVENTION
This invention has been devised to offer a pair of pincers for assembling and disassembling the spring of the brake shoes in a drum brake, able to be operated with quickness and less force.
The feature of the invention is a position lever and a hook lever pivotally combined oppositely. The position lever has its upper end formed with a ball joint fitted around with a position member. The hook lever has its upper end formed with a hook facing the position member of the position lever. The position member further has a sleeve receiving the ball joint therein, able to turn around but impossible to disengage from the ball joint. Besides, the position member has it upper side formed with ratchet teeth, and the position lever and the hook lever respectively have a handle disposed at a lower portion, with one of the two handles provided with a lengthwise groove and a blocking member at the lower end.
REFERENCES:
patent: 6574845 (2003-06-01), Kang
patent: 6581262 (2003-06-01), Myers
Hail III Joseph J.
Shanley Daniel
LandOfFree
Pincers for assembling and disassembling the springs of the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pincers for assembling and disassembling the springs of the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pincers for assembling and disassembling the springs of the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3204288