Fluid handling – Systems – Multiple inlet with single outlet
Reexamination Certificate
1999-11-08
2001-03-27
Chambers, A. Michael (Department: 3753)
Fluid handling
Systems
Multiple inlet with single outlet
C137S360000, C137S375000, C137S801000
Reexamination Certificate
active
06206039
ABSTRACT:
BACKGROUND OF THE INVENTION
It is often desirable to have both hot and cold water available at a hydrant on the external wall of a structure or building. While many freezeless hydrants for mounting externally on a building have long been available, they are not designed to adaptation to both hot and cold water supplies.
It is therefore a principal object of this invention to provide a freezeless wall hydrant for delivery of hot or cold water through a single discharge conduit.
SUMMARY OF THE INVENTION
A freezeless wall hydrant for delivery of hot or cold water from a single discharge conduit has first and second fluid inlet pipes in parallel spaced relation. The pipes have forward and rearward ends and are connected respectively to sources of hot and cold pressurized water.
A laterally extending fluid conduit member connects the forward ends of the first and second fluid inlet pipes and is in communication therewith.
A fluid closure valve is located in the rearward ends of each of the first and second fluid pipes. A check valve is in each of the pipes forwardly of the fluid closure valves and is capable of permitting fluid flow in the pipes in a direction from the closure valve, but prevents fluid flow towards the closure valves.
A valve rod having forward and rearward ends rotatably extends through the laterally extending fluid conduit and through the forward ends of the first and second inlet pipes and has one end operatively connected to the check valves in the rearward ends of the fluid inlet pipes. A handle is located on a protruding forward end of the valve rods to permit the manual movement of the rods to open or close the fluid closure valves.
A fluid exit conduit has a rearward end in communication with the laterally extending fluid conduit and extends forwardly and downwardly and terminates in a hose threaded portion. A check valve is located in the fluid exit conduit to prevent fluid flow therein only towards the forward end of the fluid exit conduit.
REFERENCES:
patent: 3952770 (1976-04-01), Botnick
patent: 4158366 (1979-06-01), Meter
patent: 4316481 (1982-02-01), Fillman
patent: 4700732 (1987-10-01), Francisco
patent: 4909270 (1990-03-01), Enterante, Sr. et al.
patent: 5029603 (1991-07-01), Ackroyd
patent: 5590679 (1997-01-01), Almasy et al.
patent: 5632303 (1997-05-01), Almasy et al.
patent: 5752542 (1998-05-01), Hoeptner, III
Carlson William L.
Dickey Alfred F.
Shuler James F.
Chambers A. Michael
McShane Thomas L.
WCM Industries, Inc.
Zarley McKee Thomte Voorhees & Sease
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