Open-end wrench with resilient opening fun easy repositioning

Details Open-end wrench with resilient opening fun easy repositioning Open-end wrench with resilient opening fun easy repositioning

2001-08-24

2002-07-02

Hail, III, Joseph J. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Pivoted side jaw

C081S099000

Reexamination Certificate

active

06412372

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a wrench, and more particularly to an open-end wrench.
2. Description of Related Art
As shown in
FIG. 1
, an open-end wrench of the prior art has a handle
05
, and two open ends
06
which are located at two longitudinal ends of the handle
05
for use in fastening or unfastening a hexagonal nut. This prior art open-end wrench is defective in design in that the open end
06
must be kept repositioning in the course of fastening or unfastening the nut. It is therefore readily apparent that the prior art open-end wrench is inefficient at best.
BRIEF SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide an open-end wrench which is free of the drawback of the prior art open-end wrench described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by an open-end wrench which has a handle, and two open ends located at two longitudinal ends of the handle. Each of the two open ends is formed with a fixed jaw and a movable jaw plate which is provided with a recovery element to furnish the movable jaw plate with a recovery force enabling the movable jaw plate to keep being fitted with a nut in the course of fastening or unfastening the nut.
The foregoing objective, features and functions of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings.


REFERENCES:
patent: 1072090 (1913-09-01), Cook
patent: 3901106 (1975-08-01), Causey
patent: 4848193 (1989-07-01), Wylie, III
patent: 5018412 (1991-05-01), Wylie, III
patent: 5582082 (1996-12-01), Gajo
patent: 5829327 (1998-11-01), Stanton
patent: 5996445 (1999-12-01), Wiens et al.

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