Combination shutoff valve wrench

Details Combination shutoff valve wrench Combination shutoff valve wrench

2000-03-13

2002-04-30

Meislin, D. S. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

C081S124200

Reexamination Certificate

active

06378401

ABSTRACT:

SUMMARY OF THE INVENTION
According to the invention there is provided a combination shutoff valve wrench for use in manipulating a valve handle and a valve stem without a valve handle, the wrench accommodating engagement of a plurality of valve handle configurations, a plurality of valve stem configurations and a ratchet.
BACKGROUND OF THE INVENTION
1. Field of Invention
The present invention relates to a combination shutoff valve wrench. More particularly, the wrench accommodates a plurality of valve handles found on plumbing valves, a plurality of valve stem broaches in cases where the handle is missing either a ratchet or an extension thereof, and may be manipulated by hand as well, if desired.
2. Background of the Invention
Plumbing valves are commonly recessed in awkward and/or hard to reach locations. Because of their shape and propensity to breakage during manipulation by hand, such manual manipulation is one major cause of a common injury to tendons in the hand, commonly referred to as a “trigger finger”.
Heretofore, a wrench for use in accommodating a single type of valve handle has been proposed.
Also, tools have been available for engaging a single embodiment of a valve stem broach.
And, tools have been provided which can be engaged to a ratchet or extension thereof.
However a single tool for accommodating all the above is absent in the art.


REFERENCES:
patent: 151635 (1874-06-01), Uhlinger et al.
patent: 2605665 (1952-08-01), Grenat
patent: 3635106 (1972-01-01), Homs
patent: 3877327 (1975-04-01), Erm
patent: 3878740 (1975-04-01), Gutshall
patent: 5862721 (1999-01-01), Kowats

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