Tools – Wrench – screwdriver – or driver therefor – Rigid jaws
Reexamination Certificate
1998-09-17
2001-01-23
Smith, James G. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Rigid jaws
C081S176100
Reexamination Certificate
active
06176157
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to devices for relieving hydrostatic pressure. More specifically, my invention is primarily intended for use in removably installing hydrostatic pressure relief valves in drain systems.
2. Description of the Related Art
In the art of hydrostatic pressure relief systems it is known that hydrostatic pressure caused by sources, such as ground water, can damage or disrupt in-ground or underground structures, such as swimming pools and the like. This hydrostatic pressure is the result of the difference in head of the water level external to the structure and the water level internal to the structure.
Various devices or systems have been created in an attempt to solve these problems or at least provide a means for meaningful remediation. For example, the system of U.S. Pat. No. 4,227,266 utilizes a pumping system activated by a float-control system while the device of U.S. Pat. No. 4,622,790 utilizes a sealing layer
7
, a relieving layer
8
, and a draining pipe system
9
. Furthermore, U.S. Pat. No. 5,036,881 utilizes a system relying upon a one-way flow valve comprising a plunger and compatible conical surface while U.S. Pat. No. 5,485,707 uses a sleeve and associated removable plug which is inserted by use of a tool
70
having a cylindrical knurled handle
72
and a narrower coaxial cylindrical shaft
74
.
What is not taught in the art, as far as I have seen, is a tool for removably installing a hydrostatic pressure relief valve. In specific, a tool that would fit right on top of the valve and would easily remove or install the valve regardless of the tightness of the fitting and while the valve is removably placed in a drain system, such as that on a swimming pool.
Accordingly, it is a principal object of my invention to provide a hydro static wrench and assembly for removably installing a hydrostatic pressure relief valve.
It is a further object of my invention to provide the means for a quick, easy removable installation of the valve.
It is a still further object of my invention to provide a means for utilizing a socket-type wrench to apply the necessary torque for such removable installation.
It is a further object of my invention to provide a valve which is removably installed and which is capable of releasing pressure from sources, such as ground water, on its own.
It is a still further object of my invention to provide a means for the ease of removable installation of the valve while in a drain system, such as those found in swimming pools.
Other objects of my invention, as well as particular features, elements, and advantages thereof will be elucidated in, or apparent from, the following description and the accompanying drawing figures.
SUMMARY OF THE INVENTION
According to my present invention I have provided a hydro static wrench for removably connecting to a socket wrench for removably engaging and removably install a hydrostatic relief valve having a cap portion, an axial cap projection, and radial cap extensions, the hydro static wrench comprising: a sleeve comprising a body portion, at least one opposing arcuate sidewall, and at least one opposing slotted sidewall, the body portion axially extending along a first axis and having a top planar portion and a bottom planar portion located opposite and parallel the top planar portion, the top planar portion having a projected polygonal aperture for removably engaging the socket wrench, the bottom planar portion having a polygonal aperture for removably engaging the axial cap projection, the at least one opposing arcuate sidewall axially extending along the first axis from the top planar portion to below the bottom planar portion and radially extending along a second axis perpendicular to the first axis for creating a lip structure for concentrically enclosing and removably engaging the cap portion, the at least one opposing slotted sidewall axially extending along the first axis from the top planar portion to below the bottom planar portion and being slotted radially along a third axis perpendicular to the first axis and the second axis for creating a passageway for receiving the radial cap extensions, the sleeve having sufficient strength for axially revolving about the first axis and for removably install the hydrostatic relief valve along the first axis.
In another embodiment, I have provided a first wrench assembly for removably installing a hydrostatic pressure relief valve having a cap portion and at least one radial cap extension laterally extending from the cap portion, the wrench assembly comprising: a socket-style wrench and a hydro static wrench. The hydro static wrench comprising a body portion having a top planar surface and a bottom planar surface being located parallel and opposite the top planar surface, the top planar surface for detachably engaging the socket-style wrench and the bottom planar surface for removably connecting the hydro static wrench to the cap portion, the body portion further comprising a plurality of opposing arcuate-shaped surfaces laterally extending in a first direction perpendicular to an axial axis and axially extending a length measured from the top planar surface to below the bottom planar surface for creating a lip structure for concentrically enclosing and grasping the cap portion when the hydro static wrench is removably placed upon the hydrostatic pressure relief valve along the axial axis, the plurality of opposing arcuate-shaped surfaces being transversely slotted along the length in a second direction perpendicular to the first direction and the axial axis for allowing sufficient passageway for the at least one radial cap extension during removable placement of the hydro static wrench upon the hydrostatic pressure relief valve.
In a further embodiment, I have provided a second wrench assembly comprising: a socket-style wrench, a hydrostatic pressure relief valve comprising a cap portion and at least one radial cap extension laterally extending from the cap portion, and a hydro static wrench. The hydro static wrench comprising a body portion having a top planar surface and a bottom planar surface being located parallel and opposite the top planar surface, the top planar surface for detachably engaging the socket-style wrench and the bottom planar surface for removably connected to the cap portion, the body portion further comprising a plurality of opposing arcuate-shaped surfaces laterally extending in a first direction perpendicular to an axial axis and axially extending a length measured from the top planar surface to below the bottom planar surface for creating a lip structure for concentrically enclosing and grasping the cap portion when the hydro static wrench is removably placed upon the hydrostatic pressure relief valve, the plurality of opposing arcuate-shaped surfaces being transversely slotted along the length in a second direction perpendicular to the first direction and to the axial axis for allowing sufficient passageway for the at least one radial cap extension during removable placement of the hydro static wrench upon the hydrostatic pressure relief valve.
REFERENCES:
patent: 2522038 (1950-09-01), Houghton
patent: 3086414 (1963-04-01), Nardi
patent: 4227266 (1980-10-01), Russell
patent: 4276163 (1981-06-01), Gordon
patent: 4622790 (1986-11-01), Johansson
patent: 5036881 (1991-08-01), Southmayd
patent: 5329648 (1994-07-01), Davey
patent: 5429019 (1995-07-01), Davey
patent: 5485707 (1996-01-01), Wilkes
patent: 5697268 (1997-12-01), Makovsky et al.
patent: 5746416 (1998-05-01), Paylor
patent: 2 193 134 (1988-02-01), None
Meroni & Meroni
Meroni, Jr. Charles F.
Shakeri Hadi
Smith James G.
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