U.S. patent number 3,712,331 [Application Number 05/120,626] was granted by the patent office on 1973-01-23 for holding tank evacuating apparatus for a recreational vehicle.
Invention is credited to Carlos F. Otto.
United States Patent |
3,712,331 |
Otto |
January 23, 1973 |
HOLDING TANK EVACUATING APPARATUS FOR A RECREATIONAL VEHICLE
Abstract
Apparatus for evacuating the holding tank of a recreational
vehicle including a flexible hose and a carrier rotatably attached
to the vehicle and a rigid sleeve for supporting the hose at all
times.
Inventors: |
Otto; Carlos F. (Lander,
WY) |
Family
ID: |
22391541 |
Appl.
No.: |
05/120,626 |
Filed: |
March 3, 1971 |
Current U.S.
Class: |
137/355.16 |
Current CPC
Class: |
E03F
1/008 (20130101); B60P 1/60 (20130101); Y10T
137/6918 (20150401) |
Current International
Class: |
B60P
1/00 (20060101); B60P 1/60 (20060101); B65h
075/36 () |
Field of
Search: |
;137/351,354,355.16,355.18,355.2,355.24,355.26,355.28,615,604 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Scott; Samuel
Claims
What is claimed is:
1. Apparatus of the class described comprising in combination,
a. a vehicle having a holding tank for liquid,
b. a carrier rotatably carried by said vehicle,
c. a rigid shield including telescoped tubes,
d. a flexible, extensible conduit communicating at one end with the
interior of said tank and extending through said shield, and
e. a fitting connected to said shield and loosely carried by said
carrier whereby the latter may be rotated to allow said shield and
said conduit to be selectively positioned with respect to said
vehicle while said conduit remains in communication with said
tank.
2. The combination of elements set forth in claim 1 in which the
conduit extends in the inner tube of the shield and to a point
adjacent to the outer end of the inner tube.
3. The combination of elements set forth in claim 1 in which the
shield is supported and held in position by the carrier when the
vehicle is in transit.
4. The combination of elements set forth in claim 1 in which the
conduit is extensible independently of said shield.
5. The combination of elements set forth in claim 1 in which said
carrier is rotatable through approximately 90.degree. to rotate the
inlet of said fitting from a substantially horizontal position to
substantially vertical position.
6. The combination of elements set forth in claim 1 in which the
carrier is spring loaded and latched in position to hold the inlet
of said fitting substantially horizontal during transit.
7. The combination of elements set forth in claim 6 in which a
basin drain is connected to a tank fitting which is connected to
the inlet end of said conduit and the portion of said conduit
adjacent to the inlet end portion is maintained above the outlet of
said tank fitting whereby drain water from said basin is trapped in
said tank fitting.
8. The combination of elements set forth in claim 1 in which the
outlet end portion of said conduit is positioned adjacent to a
screw threaded fitting that is rotatable with respect to said
outlet end, and a movable handle is connected to said fitting to
facilitate handling and positioning said fitting and attached
conduit.
9. The combination of elements set forth in claim 8 in which said
handle latches with said shield to maintain said conduit in said
shield during transit.
10. The combination of elements set forth in claim 1 in which a
water hose is connected to the conduit near its inlet end whereby a
supply of water may be introduced into said conduit to flush out
the conduit after the contents of the holding tank have been
discharged.
11. The combination of elements set forth in claim 10 in which
means is provided for introducing a cleansing agent into the flush
water.
12. The combination of elements set forth in claim 11 in which the
cleansing agent is carried in a manually collapsible container in
direct communication with said hose connector.
Description
BACKGROUND
Prior to this invention it has been the practice for each
recreational vehicle equipped with a holding tank to carry a
suitable drain hose. The hose had a fitting on one end to connect
with the outlet of the tank and another fitting on the other end to
connect with a sewer or dump station. The hoses were quite flexible
and it was necessary to provide suitable supports at close
intervals to maintain a downward slope of the hose from the tank to
the hose outlet. The supports varied from crude bricks and stones
to various forms of wire or metal brackets. In all of the various
arrangements it has been the practice to disconnect the hose from
the tank, collect the supports, and store the loose parts in a
container or elsewhere each time the vehicle was moved. There has
been a need for a satisfactory apparatus to provide for a hose that
could remain connected to the tank at all times and that could be
quickly and easily cleansed and disconnected from the sewer
facility and that could be securely and easily stored during
movement of the vehicle.
SUMMARY
This invention concerns apparatus for evacuating the sewage
contents of a holding tank of a recreational vehicle. The apparatus
provides a simple and satisfactory means of storing an extensible
accordion type drain hose during transit without disconnecting the
hose from the tank. The apparatus completely eliminates the usual
troubles and problems encountered in cleaning, disconnecting and
storing such a hose and associated fittings each time the vehicle
is moved to a new location. The apparatus also provides a rigid
support having a fixed gradient for the full length of the hose
when the outlet end is connected to a sewer or dump station.
Thus it is an object of the present invention to provide a safe,
simple and sanitary means to evacuate the sewage contents of the
holding tank of recreational vehicles.
It is a further object to provide a compact, protective and secure
storage means for a recreational vehicle corrugated expansible type
sewer hose while in transit.
It is a further object to provide means for a rigid support having
a continuous gradient for a sewer hose when evacuating the contents
of a holding tank.
It is a further object to provide an improved means to evacuate a
holding tank to a sewer facility at various locations with respect
to the vehicle.
It is a further object to provide an effective means to flush and
cleanse the vehicle sewer hose and fittings after evacuation of the
holding tank to destroy harmful bacteria and odors without
disconnecting the hose from the holding tank.
It is also an object to provide a means to provide for a water
rinse through the hose prior to flexing and movement of the hose in
freezing weather to prevent cracking of the hose.
Other advantages and benefits of the present invention will be
apparent from a consideration of the drawings in which:
FIG. 1 is an elevation view showing a typical position of the
apparatus connected to a sewer or dump station;
FIG. 2 is an elevation view of the rotatable carrier rack when the
rack is in the raised position for travel;
FIG. 3 is an elevation view of the rotatable carrier rack when the
rack is in the raised position;
FIG. 4 is a plan view of the rotatable carrier rack in the lowered
position;
FIG. 5 is an end sectional view of the rotatable carrier rack;
FIG. 6 is an elevation view of the rotatable carrier of FIG. 2 in a
lowered position between travel and discharge positions;
FIG. 7 is a side view of the handling and positioning rod of FIGS.
1 and 6;
FIG. 8 is a fragmentary, partly sectional view of the flexible hose
and the telescoping tubes of FIG. 1;
FIG. 9 is a fragmentary side elevation view of parts of FIG. 8 with
the inner telescoping sleeve partially extended, the hose
projecting from the sleeve, and the positioning rod connected to
the end of the hose;
FIG. 10 is a fragmentary plan view of parts of FIG. 1 including the
connection to the holding tank fitting of a source of disinfecting
agent;
FIG. 11 is a sectional view of a water supply fitting equipped with
a chlorine venturi and removable core; and
FIG. 12 is a schematic, partly sectional view of the chlorine
supply container of FIG. 1.
The embodiment of the present invention disclosed herein is
attached to a vehicle and to a holding tank in the vehicle (neither
being shown). This embodiment includes a carrier in the form of a
rod 1 which extends through holes in brackets or side frames 3 of
the vehicle chassis, and has an end portion 5 to serve as a handle
to rotate the rod. Rod 1 is urged endwise by a spring 7 surrounding
it and bearing against a washer 10 which is retained by cotter pin
11.
Rod 1 (see FIGS. 3 and 4) is provided with a ring 13, a J hook 14
and stub 15. These parts may be attached to rod 1, as by welding.
Stub 15 seats in notch 15a in the lower flange of the side frame 3
adjacent to spring 7. The notch may be avoided by welding a lug on
the lower flange of side frame 3 to be engaged by stub 15 when
carrier 1 is rotated 90.degree. from the position shown in FIG. 2.
Elbow fitting 16 is rotatably mounted in ring 13, is loosely
supported in the ring by flange 16a and is attached to one end of a
tube 18 in which an inner tube 19 is freely slidable. As FIGS. 2,
6, 8 and 9 show, inner tube 19 is provided with a flange 20 and is
cut away interiorly to receive a rotatable fitting 21 which is
beveled at 22 to seat in the cut away portion of tube 19 and is
exteriorly threaded as at 23. Nipple 24 is connected to the outlet
end of flexible hose or conduit 25 and is retained by collar 26.
That hose extends through tubes 19 and 18, and elbow 16 and is
attached to tank fitting 51. The basin drain (not shown) is
connected directly to fitting 51. Part 25A of the hose is for
flexing when the carrier is in transit position (FIG. 2). Tube 18
forces up section of hose 25A when in the transit position, thereby
entrapping a limited amount of basin water in fitting 51 and the
lower part of hose 25A. When tube 19 is moved in tube 18 toward
elbow 16, hose 25 is compressed in tube 18. Tubes 18 and 19
constitute a rigid shield for the hose.
A socket 30 (FIGS. 1, 6 and 9) is connected by hinge 32 to fitting
21. Rod 35 fitted with handle 36 is attached to socket 30. Spring
clip 34 attached to socket 30 has latching engagement with tube
flange 20 when the rod is positioned parallel to tubes 18 and 19,
for example, when the vehicle is in transit. Spring clip 34 is
formed to permit a limited amount of elevation of handle 37 before
unlatching from flange 20. A clasp 38 attached to tube 18 (FIG. 6)
serves to hold rod 19 in a latched position. By manipulating rod 35
the fitting 21 may be moved into position in a permanent sewer
connection indicated at 39 in FIG. 1 where threads 23 may engage
with any there present for a permanent connection. Rod 35 also
serves to move the hose back into the tubes. End surface 31 of
socket 30 is at an angle to the axis of rod 35 to facilitate
handling of fitting 21.
FIGS. 10, 11 and 12 show the arrangement of parts to flood and wash
out the corrugated hose with a chlorine enriched supply of rinse
water. Fitting 51 is fastened to the dump valve and opens
horizontally to connect to inlet portion 25A of hose 25. Fitting 51
is also connected to the basin drain. Water hose connector 40 is
mounted at an inwardly facing angle to fitting 51 so that the water
stream will be directed against the face of the dump valve to
prevent any accumulation that may prevent proper closing. Water
hose connector 40 is provided with a thread 40a at one end to
connect with fitting 51 and suitable washer 42 and coupling 41 are
positioned at the other end to connect with a water hose (not
shown). Intermediate of the two ends, water hose connector 40 is
provided with a reduced flow area and suitable venturi tube 44
fitted with core 45.
Tube 44 is connected by hose 46 to a chlorine supply in plastic bag
50 supported on a shelf (not shown). Bag 50 is fitted with an
internal tube 48, weight 47 and stopper cap 49 so that the chlorine
supply may be expelled from bag 50 by manually pressing on the bag
or by allowing the venturi action of water hose connector 40 to
draw the chlorine supply into the rinse water stream.
When the holding tank of the vehicle is to be emptied, the vehicle
is parked adjacent to a sewer connection or dump station. Then, if
frame 3 does not have a welded on lug to engage stub 15, rod 1 is
pulled endwise to disengage stub 15 from the notch 15a in the
flange of frame 3, thereby compressing spring 7. Rotation of rod 1
moves hook 14 downwardly thereby freeing tube 18 for removal
therefrom. Tube 18 is lifted out of hook 14, rod 35 is disengaged
from its clasp 38 and is moved high enough to disengage spring clip
34 from flange 20 of the inner tube 19. Then the nipple 24 is
inserted in the sewer connection or dump station and the threads 23
of fitting 21 are engaged with a threaded member if one is present
in the sewer connection.
From the above description the procedure to follow in making a
tight and downward slopping connection to a sewer or dump station
will be evident. Prior to disconnecting the apparatus it is
desirable to flush and rinse hose 25 by connecting a water hose to
water hose coupling 41. While manually holding portion 25A of the
corrugated hose in an elevated position, the water supply is turned
on to flush out fitting 51 and connected parts and to flood and
fill that portion of the hose and fitting with a chlorine-enriched
supply of water. Thereafter the hose is lowered and the surge of
water through the remaining portion of hose 25 does an effective
removal of all residue in the hose. If desired, this step may be
repeated several times for thoroughly adequate cleaning action.
When the vehicle is to be moved, the apparatus may be "loaded for
travel" by reversing the foregoing steps, i.e., by disconnecting
fitting 21 from the sewer connection, urging the hose endwise in
the tubes while moving the inner tube as far as possible in the
outer tube, engaging rod 35 with clasp 38, placing tube 18 in hook
14 and rotating rod 1 and latching it in position by engaging stub
15 in its notch on the vehicle frame.
Having thus described this invention in such full, clear, concise
and exact terms as to enable any person skilled in the art to which
it pertains to make and use the same, and having set forth the best
mode contemplated of carrying out this invention, I state that the
subject matter which I regard as being my invention is particularly
pointed out and distinctly claimed in what is claimed, it being
understood that equivalents or modifications of, or substitutions
for, parts of the above specifically described embodiment of the
invention may be made without departing from the scope of the
invention as set forth in what is claimed.
* * * * *