U.S. patent number RE39,235 [Application Number 10/180,394] was granted by the patent office on 2006-08-15 for freezerless wall hydrant for delivery of hot or cold water through a single discharge conduit.
This patent grant is currently assigned to WCM Industries, Inc.. Invention is credited to William L. Carlson, Alfred F. Dickey, James F. Shuler.
United States Patent |
RE39,235 |
Shuler , et al. |
August 15, 2006 |
Freezerless wall hydrant for delivery of hot or cold water through
a single discharge conduit
Abstract
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.
Inventors: |
Shuler; James F. (Colorado
Springs, CO), Dickey; Alfred F. (Colorado Springs, CO),
Carlson; William L. (Colorado Springs, CO) |
Assignee: |
WCM Industries, Inc. (Colorado
Springs, CO)
|
Family
ID: |
23728286 |
Appl.
No.: |
10/180,394 |
Filed: |
June 26, 2002 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
Reissue of: |
09435411 |
Nov 8, 1999 |
06206039 |
Mar 27, 2001 |
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Current U.S.
Class: |
137/606; 137/360;
137/375; 137/801 |
Current CPC
Class: |
E03B
7/12 (20130101); E03B 9/025 (20130101); E03C
1/04 (20130101); Y10T 137/7036 (20150401); Y10T
137/9464 (20150401); Y10T 137/698 (20150401); Y10T
137/87684 (20150401) |
Current International
Class: |
F16K
11/22 (20060101) |
Field of
Search: |
;137/801,360,375,606,614.2 |
References Cited
[Referenced By]
U.S. Patent Documents
Other References
Zurn Industries, Inc.; Hydromechanics Handbook; Aug. 1971; ; Erie,
PA, USA. cited by other .
Prier-Brass Manufacturing Co; H&C Mixture Yoke, Kansas City,
Mo., USA, 1968. cited by other.
|
Primary Examiner: Chambers; A. Michael
Claims
What is claimed is:
1. A freezeless wall hydrant for delivery of hot or cold water from
a single discharge conduit, comprising, elongated first and second
fluid inlet pipes in parallel spaced relation and having forward
and rearward ends, a laterally extending fluid conduit member
between and adjacent to the forward ends of the first and second
fluid inlet pipes, and being in fluid communication therewith, a
fluid closure valve in the rearward ends of the first and second
fluid inlet pipes, a check valve in each of the first and second
fluid inlet pipes forwardly of the fluid closure valves and being
capable of permitting fluid flow in the pipes in a direction from
the closure valve, but preventing fluid flow towards the closure
valve, a valve rod having a forward end rotatably extending through
the laterally extending fluid conduit and thence through forward
ends of the first and second fluid inlet pipes and being
operatively connected to the check valves in the rearward end of
the fluid inlet pipes, a handle in 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 having a
rearward end in connection with the laterally extending fluid
conduit, and a forward end terminating in a hose threaded portion,
a check valve in the fluid exit conduit to permit fluid flow
therein only towards the formed end of the fluid exit conduit, the
rearward ends of the first and second fluid pipes being connected
to sources of hot and cold water, respectively rearwardly of the
fluid closure valves.
2. The device of claim 1 wherein the fluid exit conduit extends
downwardly and forwardly from the laterally extending fluid
conduit.
.Iadd.3. A freezeless wall hydrant for delivery of hot or cold
water from a single discharge conduit, comprising, elongated first
and second fluid inlet pipes in parallel spaced relation and having
forward and rearward ends, a laterally extending fluid conduit
member between and adjacent to the forward ends of the first and
second fluid inlet pipes, and being in fluid communication
therewith, a fluid closure valve in the rearward ends of the first
and second fluid inlet pipes, a check valve in one of fluid inlet
pipes forwardly of the fluid closure valves and being capable of
permitting fluid flow in the pipes in a direction from the closure
valve, but preventing fluid flow towards the closure valve, a valve
rod having a forward end rotatably extending through the laterally
extending fluid conduit and thence through forward ends of the
first and second fluid inlet pipes, a handle in 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 having a rearward end in connection with the laterally
extending fluid conduit, and a forward end terminating in a hose
threaded portion, a check valve in the fluid exit conduit to permit
fluid flow therein only towards the formed end of the fluid exit
conduit, the rearward ends of the first and second fluid pipes
being connected to sources of hot and cold water, respectively
rearwardly of the fluid closure valves..Iaddend.
.Iadd.4. A freezeless wall hydrant for delivery of hot or cold
water from a single discharge conduit, comprising, elongated first
and second fluid inlet pipes in parallel spaced relation and having
forward and rearward ends, a laterally extending fluid conduit
member between and adjacent to the forward ends of the first and
second fluid inlet pipes, and being in fluid communication
therewith, a fluid closure valve in the rearward ends of the first
and second fluid inlet pipes, a valve rod having a forward end
rotatably extending through the laterally extending fluid conduit
and thence through forward ends of the first and second fluid inlet
pipes, a handle in 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 having a rearward end in
connection with the laterally extending fluid conduit, and a
forward end terminating in a hose threaded portion, a check valve
in the fluid exit conduit to permit fluid flow therein only towards
the formed end of the fluid exit conduit, the rearward ends of the
first and second fluid pipes being connected to sources of hot and
cold water, respectively rearwardly of the fluid closure
valves..Iaddend.
Description
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.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a plan view of the hydrant of this invention;
FIG. 2 is a sectional view taken on line 2--2 of FIG. 1; and
FIG. 3 is a front elevational view as seen from the bottom end of
FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference to FIGS. 1 and 2, the hydrant 10 has a hot water
inlet pipe 12 with a forward end 14 and a rearward end 16. A cold
water pipe 18 has a forward end 20 and rearward end 22 and is
disposed in parallel spaced relationship to pipe 12. The pipes 12
and 18 are connected to sources of hot and cold water,
respectively, (not shown).
A mounting casting 24 has a pair of spaced apertures 26 therein and
a laterally extending fluid conduit 28. The apertures 26 receive
the forward end 14 of pipe 12 and the forward end 20 of pipe 18 and
are in sealed connection with the outside surfaces of the
respective pipes. The laterally extending fluid conduit 28 is in
fluid communication with the interiors of both of the pipes 12 and
18. Fluid closure valves 30 are located in the rearward ends of
each of the pipes 12 and 18, and each valve includes a conventional
valve seat 31. A conventional check valve 32 is located on the
forward end of each of the fluid closure valves 30 and is made in
accordance with U.S. Pat. Nos. 5,590,679 and 5,632,303 which are
incorporated herein by reference.
An elongated valve rod 34 extends through the apertures 26 in
mounting casting 24 and thence extends into each of the pipes 12
and 18. The rods 34 also slidably extend through the packing
assemblies 36 which are mounted in the apertures 26 of mounting
casting 24 to seal the apertures 26 against fluid flow. The valve
rod 34 is longitudinally movable in the pipes 12 and 18 by means of
the conventional threaded assembly generally shown by the numeral
37 in FIG. 2. The numeral 38 designates the protruding forward ends
of the rods 34 to which is secured a conventional wheel handle
40.
A fluid exit conduit 42 extends downwardly and forwardly from the
mounting casting 24 and is in fluid communication with the
laterally extending fluid conduit 28 within casting 24. The conduit
42 terminates in a conventional hose-threaded nozzle end 44. A
conventional check valve 46 is located within fluid exit conduit 42
to permit fluid flow in the conduit only in a direction towards the
nozzle end 44. Similarly, the check valves 32 permit the flow of
fluid in pipes 12 and 18 only in a direction away from the closure
valves 30 and not in a direction towards the closure valves. Thus,
a continuous fluid chamber exists in the hydrant 10 and extends
from each of the check valves 32 forwardly through the pipes 12 and
18, and thence across the laterally extending fluid conduit 28, and
thence through the fluid exit conduit 42. Because the conduit 42
extends forwardly and downwardly from casting 24, any residual
fluid in the above described fluid department will move by gravity
and will exit through nozzle end 44 of the conduit 42.
In operation, both of the fluid closure valves 30 are normally
closed to prevent flow of any incoming fluid, hot or cold, through
the inlet pipes 12 and 18. When hot water is needed at the nozzle
end 44, the wheel handle 40 is rotated in a counter clockwise
direction to cause the rod 34, through the threaded assembly 37 to
cause the fluid closure valve 30 to remove itself from valve seat
31, thus permitting hot water to flow into the inlet pipe 12. The
hot water flows thence through the laterally extending fluid
conduit 28 and thence outwardly through fluid exit conduit 42 and
nozzle end 44. The hot water may continue to move through the
laterally extending fluid conduit 28, but it will not move into the
source of cold water supply connected to pipe 18 because its
movement towards the cold water supply will be precluded by the
check valve 32 in pipe 18.
The same phenomenon described above would also exist in reverse
form when the closure valve 30 in pipe 18 is opened and the closure
valve 30 in pipe 12 is closed.
It is also possible to have both closure valves 30 in both inlet
pipes 12 and 18 open at the same time to blend hot and cold water
within the composite fluid compartment downstream from each of the
check valves 32. Obviously, the check valves 32 prevent cold water
from moving towards the hot water source, and vice versa.
Conventionally, no water exterior of nozzle end 44 is permitted to
enter the hydrant 10 by reason of the conventional check valve 46.
Residual water in any of the conduits will flow by gravity out of
nozzle end 44 of conduit 42.
Therefore it is seen that this invention achieves all of its stated
objectives.
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