Tools – Wrench – screwdriver – or driver therefor – Handle or shank
Reexamination Certificate
2000-03-15
2001-07-10
Meislin, D. S. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Handle or shank
C081S124500, C081S125100, C081S177700
Reexamination Certificate
active
06257103
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a foldable wrench assembly comprising two arms each have two sockets on two ends thereof, the two arms pivotably connected with each other at a middle by a push-type connection means which allows the two arms folded toward with each other.
BACKGROUND OF THE INVENTION
A conventional foldable wrench assembly known to applicant is disclosed in U.S. Pat. No. 3,742,790 to Galley, with a title of “Wheel Braces”. The wheel braces includes two arms pivoted together at the middle by a thumbscrew, and a nut is engaged with the thumbscrew from opposite side of the braces. Lateral projections are respectively connected to the middle of the two arms and each projection has a concave surface for embracing the arms respectively. When in use, the user unscrews the thumbscrew and pivots the two arms to a desired position and then tightens the thumbscrew again. It is not convenient for the user to unfold the assembly because the user has to rotate the thumbscrew, the rotation action takes time. Besides, when unscrewing the thumbscrew, the user has to hold the nut so as not to let the thumbscrew separate from the nut.
The present invention intends to provide a wrench assembly that has a push-type connection means connecting the two arms at the middle and the two arm can be quickly pivoted by simply pushing a button of the connection means.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a wrench assembly and comprising a first arm pivotably connected to a second arm at the middle by a connection means. The first arm has a first cross-bore defined through the middle thereof and a flange extends radially inward from an inside of the first cross-bore. A hole is defined through the flange. The second arm has a second cross-bore defined through the middle thereof and a concavity is defined beside the second cross-bore. A spring is received in the concavity and a block is biased by the spring and movably between the hole and the concavity. A bolt extends through the first cross-bore, the second cross-bore and is engaged with a nut. The bolt has a recess defined centrally and longitudinally therethrough so as to receive a stem and a spring. A button is connected to the stem and a rod extends perpendicularly from the button. The rod extends through the hole in the first arm and contacts the block.
The object of the present invention is to provide a wrench assembly that is pivotably connected together by a push-type connection means so that the user simply pushes the button of the connection means can pivot the two arms of the wrench assembly.
These and further objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, several embodiments in accordance with the present invention.
REFERENCES:
patent: 2738694 (1956-03-01), Boatright
patent: 3587366 (1971-06-01), Klein
patent: 3742790 (1973-07-01), Galley
patent: 4236266 (1980-12-01), Hannah et al.
patent: 4505171 (1985-03-01), Chang
Kamrath Alan
Meislin D. S.
Rider Bennett Egan & Arundel
LandOfFree
Foldable tire wrench assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Foldable tire wrench assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foldable tire wrench assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2476891