Fluid handling – With liquid valves or liquid trap seals – Liquid seal in liquid flow line; flow liquid forms seal
Reexamination Certificate
2001-01-19
2001-12-04
Rivell, John (Department: 3753)
Fluid handling
With liquid valves or liquid trap seals
Liquid seal in liquid flow line; flow liquid forms seal
C137S56100R
Reexamination Certificate
active
06325091
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to sewer line drain trap priming systems and more particularly to a water distribution apparatus for multiple trap priming systems.
As is well known, most plumbing codes require that water be automatically supplied to sewer line drain traps to maintain the traps in an operative condition filled with water at all times. Various priming water distribution arrangements have been provided heretofore for accomplishing this purpose. Illustrative such assemblies are my earlier disclosures in U.S. Pat. No. 5,253,670, issued Oct. 19, 1993 and U.S. Pat. No. 5,678,588, issued Oct. 21, 1997. In the first of the two patents identified above, an elongated manifold pipe was provided with a multiplicity of individual metering port connections each of which having a specialized flow orifice of a particular size predetermined to equalize the flow of priming water from the manifold to each branch line connected to a sewer line trap. The second patent identified above provided a multiplicity of manifold units each provided with its own, individual pressure sensitive control valve operable to inject a charge of priming water into drain traps connected thereto upon a predetermined change in pressure in the water inlet lines supplying water to the pressure sensitive valves.
SUMMARY OF THE INVENTION
In its basic concept, this invention provides a water distribution apparatus for multiple drain trap priming systems for sewer lines, the distribution apparatus having a slotted, water-metering receptacle member contained within a hollow body housing, the receptacle member arranged to distribute priming water received thereby equally to each of a plurality of outlet ports on the body housing that are in turn connected to individual sewer line traps.
It is by virtue of the foregoing basic concept that the principal objective of this invention is achieved; namely, the provision of a distribution apparatus that maintains multiple sewer line drain traps in operatively primed condition using a minimal amount of water.
Another object of this invention is the provision of a distribution apparatus of the class described which also provides for easy and immediate inspection of its interior.
Another object of this invention is the provision of a distribution apparatus of the class described which accommodates both easy and economical installation as well as simplified installation that allows for a substantial degree of variation off of true level mounting orientation without adversely affecting optimum performance of the distribution apparatus.
Yet another object of this invention is the provision of a distribution apparatus of the class described in which one or more water outlets may be selectively plugged in cases where more water outlets are provided than sewer traps to be served, without adversely affecting continous and even distribution of water to the remaining unplugged water outlets of the distribution apparatus.
A further object of this invention is the provision of a distribution apparatus of the class described which is of simplified construction for economical manufacture and durability of operation.
The foregoing and other objects and advantages of the present invention will appear from the following detailed description, taken in connection with the accompanying drawings of a preferred embodiment.
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Perrott Charles H.
Weltman Brian G.
Olson and Olson
Precision Plumbing Products, Inc.
Rivell John
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