U.S. patent number 3,890,656 [Application Number 05/470,369] was granted by the patent office on 1975-06-24 for whirlpool jet for bathtubs.
Invention is credited to Cleo L. Mathis.
United States Patent |
3,890,656 |
Mathis |
June 24, 1975 |
Whirlpool jet for bathtubs
Abstract
A whirlpool jet assembly for bathtubs comprising a plurality of
housings spaced around the outside of a bathtub. Each housing has a
water inlet opening connected to a water supply pipe and an air
inlet opening connected to an air supply pipe. These openings are
connected to a mixing chamber in which air is mixed with the water
by venturi action as it flows into the bathtub through a water
outlet having a jet outlet control. The device is compact and no
fittings are required.
Inventors: |
Mathis; Cleo L. (South El
Monte, CA) |
Family
ID: |
27013727 |
Appl.
No.: |
05/470,369 |
Filed: |
May 16, 1974 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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392046 |
Aug 27, 1973 |
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Current U.S.
Class: |
4/541.4; 138/40;
261/DIG.75; 601/169; 601/157; 4/541.6; 138/42; 261/36.1 |
Current CPC
Class: |
F04D
35/00 (20130101); A61H 33/02 (20130101); A61H
33/027 (20130101); Y10S 261/75 (20130101); A61H
33/6063 (20130101) |
Current International
Class: |
A61H
33/02 (20060101); F04D 35/00 (20060101); A47k
003/10 () |
Field of
Search: |
;4/178,180,181,173,1,172.17,172.18 ;138/40,39,41-46 ;128/66 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Artis; Henry K.
Attorney, Agent or Firm: Comstock; Robert C.
Parent Case Text
REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of my copending
application Ser. No. 392,046 filed Aug. 27, 1973.
Claims
I claim:
1. A whirlpool jet assembly for bathtubs comprising a plurality of
housings spaced around the exterior of a bathtub, each of said
housings having a transversely directed water inlet opening and an
adjacent transversely directed air inlet opening disposed above
said water inlet opening, a horizontally directed water supply pipe
extending around the exterior of said bathtub and directly
connected to each of said water inlet openings without fittings, a
horizontally directed air supply pipe extending around the exterior
of said bathtub and directly connected to each of said air inlet
openings without fittings, each of said housings having a
horizontally directed water passage extending from said water inlet
opening to a mixing chamber within said housing, a venturi air
passage extending vertically from said air inlet opening into said
mixing chamber, whereby the movement of water into and through said
chamber is speeded by venturi action, a horizontally directed water
outlet extending between said mixing chamber and the interior of
said bathtub, and a jet outlet control mounted in the outer end of
said water outlet for directing water into said bathtub.
2. The structure described in claim 1, and means for recirculating
water from said bathtub through said water supply pipe, the bottom
of said water inlet opening of each of said housings beind disposed
above the bottom of said mixing chamber, whereby said water supply
pipe is completely drained into said mixing chamber after each
use.
3. The structure described in claim 2, each of said water and air
inlet openings having a divider disposed adjacent the midportion
thereof, said dividers providing a pair of abutments on opposite
sides thereof against which the ends of a pair of sections of said
water and air supply pipes fit, said sections being cemented within
said openings to form a permanent connection.
4. The structure described in claim 3, said housings being compact
and extending outwardly from the outer periphery of said bathtub
approximately the same distance as said water and air supply
pipes.
5. The structure described in claim 4, said water and air inlet
openings, dividers, passages and mixing chambers all comprising
integral portions of a unitary housing molded of rigid plastic
material.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a whirlpool jet outlet for bathtubs which
may also be used in therapy tanks, therapy pools, swimming pools
and the like.
2. Description of the Priot Art
There are a number of whirlpool jet outlets and outlet structures
on the market at the present time, all of which are relatively
complex in their structure, installation and operation. They are
not readily adaptable to various types of installations and
environments. The water outlets of such devices customarily
protrude a substantial distance into the bathtub, which is
unsightly, is likely to result in accidents and injury and is
generally undesirable.
Previous devices have also required the use of T-fittings to
connect the air and/or water to the outlet, which is costly in both
materials and labor.
Previous devices have a further disadvantage in that no provision
is made for full or complete drainage of the water supply pipes
through the water outlets.
SUMMARY OF THE INVENTION
The present invention provides a whirlpool jet which is an
improvement over the prior art because of its extreme simplicity of
structure, installation and operation.
Another advantage of the invention is that the structure is compact
and the outlet does not protrude a substantial distance into the
tub or tank.
The invention provides a whirlpool jet outlet which can be equally
and easily installed on any existing tub, tank or pool. It is
universal and is automatically self adjusting to varying
thicknesses of wall structure.
In my previous application and in prior art devices, it was
necessary to use a T-fitting to connect the air (and sometimes the
water) to the outlet. Installing these T-fittings is costly in both
labor and materials. With the present invention, all water and air
pipe connections are made directly to the fitting, and all
T-fittings are eliminated.
Because of its simplicity of structure, installation and operation,
it is more economical than existing devices and can be
manufactured, sold and installed at a substantially low price.
The invention also provides an outlet which is completely
self-draining, so that when it is no longer in use, all water is
drained from the water supply pipe out through the outlets and into
the tub.
It is accordingly among the objects of the invention to provide a
whirlpool jet outlet for bathtubs and the like having all of the
advantages and benefits set forth above and which are provided by
the structure described in detail hereinafter in this
specification.
The invention also comprises such other objects, advantages and
capabilities as will later more fully appear and which are
inherently possessed by the invention.
While there are shown in the accompanying drawings preferred
embodiments of the invention, it should be understood that the same
are susceptible of modification and change without departing from
the spirit of the invention .
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a bottom plan view showing the whirlpool jet assembly
installed on a bathtub;
FIG. 2 is a sectional view of one outlet taken on line 2--2 of FIG.
1;
FIG. 3 is a sectional view of the same taken on line 3--3 of FIG.
2;
FIG. 4 is a sectional view of the same taken on line 4--4 of FIG.
2;
FIG. 5 is a sectional view similar to FIG. 3 showing an outlet in
which the air and water supply terminate.
DESCRIPTION OF THE PREFERRED EMBODIMENT
A preferred embodiment which has been selected to illustrate my
invention comprises a main body member or housing 10, which may
conveniently be formed by polyvinyl chloride or other suitable
material. Extending transversely through the back of the housing 10
is a water inlet opening 11 which is circular in cross-section. A
divider 12 of lesser diameter disposed adjacent to the center of
the water inlet opening 11 provides a pair of shoulders or
abutments on its opposite sides against which the ends of a pair of
sections of water supply pipe 13 abut. The pipe 13 may also be
conveniently formed of polyvinyl chloride. The walls of the pipe 13
are preferably substantially equal in thickness to the thickness of
the divider 12. The inner diameter of the water inlet opening 11 is
only slightly larger than the outer diameter water supply pipe 13,
so that they can be cemented together to form a permanent
connection.
Disposed upwardly and outwardly from the water inlet opening 11 is
an air inlet opening 14, which also extends transversely through
the housing 10. The air inlet opening 14 is circular in
cross-section and has a divider 15 of lesser diameter against which
the opposite ends of a pair of sections of an air supply pipe 16
are disposed in abuting engagement. Both sections of the air supply
pipe 16 are preferably cemented to the interior of the air inlet
opening 14.
The housing 10 is provided adjacent its front portion with an
internally screw threaded opening 17, in which is mounted the
externally screw threaded shank 18 of a water outlet 19. The water
outlet 19 has internal screw threading 20. Rotatably mounted within
the outer portion of the outlet 19 is an externally screw threaded
substantially cylindrical jet outlet control 21. The outer end of
the control 21 is provided with a diametrical slot 22 which may be
used to rotate the control within the outlet 19.
The jet outlet control 21 is provided with an angularly directed
water channel 23, which extends completely through the control 21.
Rotation of the control 21 by means of the slot 22 results in
changing the orientation of the channel 23 and thereby changes the
direction of flow of water into the tub.
The end of the outlet 19 has a wide annular radial flange 24. The
wall 25 of the tub 38 is provided with an opening through which the
outlet 19 extends, with the edges of the wall 25 being held between
the flange 24 and the adjacent end of the housing 10. The flange 24
is provided with a pair of diametrically spaced openings 50 for
receiving a wrench or other tool for use in installing or removing
the device on a tub.
An annular groove 30 is provided within the outlet 19 for holding
an annular resilient bushing 31, which forms a watertight sealing
engagement with the inside of the opening in the wall 25 to prevent
water leakage.
An air passage 32 extends vertically downwardly from the air inlet
opening 14 to the rear of a mixing chamber 33 which is disposed
within the housing 10 behind the outlet 19. A water passage 34
extends horizontally from the water inlet opening 11 into the
mixing chamber 33. The outlet end of the water passage 34 is in the
form of a nozzle 35.
FIG. 1 of the drawings is a bottom plan view of a bathtub showing a
typical manner in which the device of the present invention may be
installed. A pump 36 of conventional type may be mounted wherever
desired and is shown adjacent to the tub for purposes of
illustration only. The pump 36 supplies water to a pair of water
supply pipes 13 which extend around the opposite sides of the tub
38 and which terminate in end housings 37 which are formed in the
manner shown in FIG. 5 of the drawings. A water return pipe 39
carries water from the tub 38 back to the pump 36 for continuous
recirculation.
Any number of housings 10 may be used. In FIG. 1, two housings 10
are shown at one end of the tub, two end housings 37 at the
opposite end of the tub and one housing 10 on each side of the
tub.
In use, water is forced by pressure from the pump 36 through the
water supply pipes 13, water inlet openings 11 and water passages
34 into the mixing chambers 33 of the housings 10. Air is drawn
into the mixing chamber 33 through the air passage 32 by venturi
action. A pair of air supply pipes 16 extend around the tub 38 and
are connected to one or more air inlets which may conveniently be
disposed adjacent to the top of the tub and which are not shown in
the drawings.
The device can be used in any tank or tub wall through which an
opening such as one inch diameter can be drilled, with room on the
opposite side of the wall to accomodate the housings 10. The pipes
do not protrude beyond the housings 10, so the device is more
compact and is capable of fitting into smaller areas and more
limited spaces than the prior art. All water and air supply
fittings are completely eliminated, making for economy in
manufacture and installation, as well as reducing space
requirements.
It should be noted that no faucets, balls, jets, or other devices
protrude into the bathtub or tank. The only portion of the device
which extends inwardly from the wall 25 is the flange 24 of the
outlet 19. It is flat and only a small fraction of an inch thick.
It cannot cause any personal injury and is not unsightly.
It should be noted that the device of the present invention
requires no screws or other fastening members to be attached to the
tub.
After use of the device, all of the water is completely drained
from all of the water supply pipes 13 because the ends of the water
passages 34 are disposed slightly beneath the bottom level of the
interior of the water supply pipes 13.
* * * * *