US3672359A - Whirlpool bath attachment - Google Patents

Whirlpool bath attachment Download PDF

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US3672359A
US3672359A US58946A US3672359DA US3672359A US 3672359 A US3672359 A US 3672359A US 58946 A US58946 A US 58946A US 3672359D A US3672359D A US 3672359DA US 3672359 A US3672359 A US 3672359A
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conduit
inner conduit
water
attachment
whirlpool bath
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US58946A
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Charles Krohn
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H33/00Bathing devices for special therapeutic or hygienic purposes
    • A61H33/60Components specifically designed for the therapeutic baths of groups A61H33/00
    • A61H33/601Inlet to the bath
    • A61H33/6021Nozzles
    • A61H33/6026Nozzles in the bathtub connected to an outside pump circuit without modification of the walls
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01Constructive details
    • A61H2201/0157Constructive details portable
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H33/00Bathing devices for special therapeutic or hygienic purposes
    • A61H33/02Bathing devices for use with gas-containing liquid, or liquid in which gas is led or generated, e.g. carbon dioxide baths

Definitions

  • Portable apparatus has been available wherein air and water underpressure are mixed and applied to a pool of water within a tub.
  • This apparatus utilizes the normal water pressure available in p'rivate'dwellings and has been of considerable value in many instances. Improvements are still required, however, in maximizing the whirlpool action for any given water pressure and in the simplification of the apparatus utilized.
  • the present invention provides relatively simple apparatus for attachment to the existing plumbing in most residential dwellings. This apparatus is operative to provide a combined output of air and water in a form arranged to yield maximum water turbulence and current for the pressure of the water applied.
  • present invention administers a combination of air and water wherein the air remains substantially independent of the water.
  • prior apparatus has been designed to provide for the entrapment of minute air particles within the water stream (what may be referred to as aerated water)
  • the present invention 'relates to apparatus which yields relatively large bubbles of air in combination with a strong jet stream of water.
  • Another object of the invention is to provide an improved whirlpool bath attachment suitable for connection to conventional plumbing facilities.
  • Another object of the present invention is to provide an improved whirlpool bath attachment providing for maximized current and water flow within an enclosed container in response to existing water pressure.
  • Another object of the present invention is to provide an improved whirlpool bath attachment which delivers air which is substantially independent of the water stream.
  • a whirlpool bath attachment comprising a pair of coaxial conduits adapted to be mounted on a bathtub with the upper end above the water level.
  • the upper end of the inner conduit is open to the surrounding atmosphere and the lower end of the inner conduit terminates a predetermined distance within the corresponding end of the outer conduit.
  • FIG. 1 is a pictorial illustration of a whirlpool bath attachment embodying the features of the invention and mounted in a typical bathtub;
  • FIG. 2 is a longitudinal sectional view taken through a whirlpool bath attachment embodying the features of the invention and illustrating the upper and lower ends thereof.
  • the attachment 10 shown in FIG. 1 may be mounted to the wall by means of a bracket 13, or the like. It will be noted that this attachment has offset ends in order to conveniently permit attachment to a water supply at the top and provide the desired direction of water and air stream at the bottom. Bracket 13 permits rotation of the attachment to direct the water flow as desired. In the illustration, there is shown a por tion of a bathtub 11 containing water reaching to a level 12. The lower end of the attachment projects beneath the water level and ejects a jet stream of water and air as shown by arrow 13 and bubbles 14. The upper portion of attachment 10 is connected via a flexible hose means 15 to the shower head or any other convenient valved water outlet.
  • a gate valve may be installed on the shower head so that one may alternatively utilize'either the shower or the whirlpool bath attachment.
  • the specific connection to existing plumbing is not germane to the invention. Any of the many means familiar to those in the art may be selected for the most serviceable interconnection.
  • FIG. 2 there is an outer conduit 20 having substantially right angle bends at upper and lower ends.
  • inner conduit 21 Within outer conduit 20 there is disposed an inner conduit 21.
  • the upper end of conduit 20 is inserted in a water-tight fashion into a sleeve 22 which in turn is connected to a flexible conduit 24 adapted for coupling to the existing plumbing system.
  • a standard hose connection is an advantageous coupling between sleeve 22 and conduit 29.
  • the function of inner conduit 21 is to conduct air and therefore an aperture 23 is provided in sleeve 22 within which conduit 21 terminates.
  • the aperture 23 is provided with suitable sealing means to prevent'the excape of water at this point. It has been found preferable to utilize a flexible tubing for inner conduit 21; and a rigid tubing for outer conduit 20; however, in certain applications it may be found to be advantageous to utilize either rigid members or flexible members throughout.
  • the lower end 27 of inner conduit 21 terminates a predetermined distance within, or short of, the end 26 of outer conduit 20. This is an important feature of the invention. It is also important that the inner conduit be the air conductor whereas the outer conduit is the water conductor. A bushing, or sleeve 29, may also be provided on the end of outer conduit 20. This bushing projects inwardly to a position upstream of end 27 and develops a restricted cylindrical aperture 28 with the outer surface of conduit 21.
  • outer tubing 20 had an inner diameter of 7/16 of an inch
  • inner tubing 21 was a flexible tubing having an outer diameter of 1/4 of an inch.
  • Bushing 29 was securely fitted into end 26 and had an inner diameter of approximately 5/16 of an inch at its upstream end and approximately 3/8 of an inch at the ejection end.
  • a whirlpool bath attachment comprising a pair of sub stantially coaxial conduits adapted to be mounted on a bath tub with the upper end above water level and means for connecting the outer conduit to a source of water.
  • the upper end of the inner conduit being open to the surrounding atmosphere and the lower end of said inner conduit terminating a predetermined distance within the corresponding end of the outer conduit, the cross-sectional area of the water passage at its narrowest point is less than the cross-sectional area of the inner conduit.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

Substantially coaxial conduits provide a jet of water from the outer conduit along with relatively large bubbles from the inner conduit. The emission end of the inner conduit terminates upstream the emission end of the outer conduit, and there is a restriction in the outer conduit upstream the end of the emission inner conduit.

Description

United States Patent Krohn [1 1 3,672,359 1 June 27, 1972 [54] WHIRLPOOL BATH ATTACHMENT [72] Inventor: Charles Krohn, 43-23 Colden Street,
Flushing, N.Y. 11355 [22] Filed: July 28, 1970 [21] App]. No.: 58,946
52 u.s.c| ......l28/66,4/l80 s1 lnt.C|. ..'.A6lh9/00 5s FieldotSearch .l.l28/66,369;4/l78,180,182
[56] References Cited UNITED STATES PATENTS 3',57l,8l8 3/1971 Jacuzzi ..4/l80 3,530,852 9/1970 Fattor 2,799,866 7/1957 ..l28/66 .lawett 4/180 Primary E.raminerL. W. Trapp Att0rneyRobert R. Strack and James A. Eisenman [5 7] ABSTRACT Substantially coaxial conduits provide a jet of water from the outer conduit along with relatively large bubbles from the inner conduit. The emission end of the inner conduit terminates upstream the emission end of the outer conduit, and there is a restriction in the outer conduit upstream the end of the emission inner conduit.
6 Claims, 2 Drawing Figures PATEMTEDJUW [s72 INVENTOR. CHARLES KROHN ATTORNEYS 1 WHIRLPOOL BATH ATTACHMENT FIELD OF THE INVENTION DESCRIPTION OF THE PRIOR ART It has long been recognized that whirlpool baths are of value in the treatment of such conditions as arthritis, neuritis, rheumatic disorders, traumatic injuries, stiff joints, etc. Hydrotherapy apparatus has been provided for the conversion of existing bathtubs and similar units in order to make available such treatment in the home. However, there has been a general problem in that such equipment generally employs electrical pumping apparatus or does not establish the desired degree of whirlpool action.
Portable apparatus has been available wherein air and water underpressure are mixed and applied to a pool of water within a tub. This apparatus utilizes the normal water pressure available in p'rivate'dwellings and has been of considerable value in many instances. Improvements are still required, however, in maximizing the whirlpool action for any given water pressure and in the simplification of the apparatus utilized.
SUMMARY OF THE INVENTION The present invention provides relatively simple apparatus for attachment to the existing plumbing in most residential dwellings. This apparatus is operative to provide a combined output of air and water in a form arranged to yield maximum water turbulence and current for the pressure of the water applied. I
In contrast with prior attempts to provide a combined air and water mixture for hydrotherapeutic applications, the
present invention administers a combination of air and water wherein the air remains substantially independent of the water. In other words, whereas prior apparatus has been designed to provide for the entrapment of minute air particles within the water stream (what may be referred to as aerated water), the present invention'relates to apparatus which yields relatively large bubbles of air in combination with a strong jet stream of water.
It is an object of the present invention to provide an improved whirlpool bath attachment.
It is another object of the invention to provide an improved whirlpool bath attachment which utilizes no electrical components.
Another object of the invention is to provide an improved whirlpool bath attachment suitable for connection to conventional plumbing facilities.
Another object of the present invention is to provide an improved whirlpool bath attachment providing for maximized current and water flow within an enclosed container in response to existing water pressure.
Another object of the present invention is to provide an improved whirlpool bath attachment which delivers air which is substantially independent of the water stream.
In accordance with a particular embodiment of the invention there is provided a whirlpool bath attachment comprising a pair of coaxial conduits adapted to be mounted on a bathtub with the upper end above the water level. The upper end of the inner conduit is open to the surrounding atmosphere and the lower end of the inner conduit terminates a predetermined distance within the corresponding end of the outer conduit. By connecting the outer conduit to-a source of water, this whirlpool attachment is enabled to induce the desired action within the tub enclosure.
The various objects and features of the invention will be more clearly understood and appreciated from the following detailed description of a typical embodiment which is illustrated in the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a pictorial illustration of a whirlpool bath attachment embodying the features of the invention and mounted in a typical bathtub; and
FIG. 2 is a longitudinal sectional view taken through a whirlpool bath attachment embodying the features of the invention and illustrating the upper and lower ends thereof.
DESCRIPTION OF THE PREFERRED EMBODIMENT The attachment 10, shown in FIG. 1, may be mounted to the wall by means of a bracket 13, or the like. It will be noted that this attachment has offset ends in order to conveniently permit attachment to a water supply at the top and provide the desired direction of water and air stream at the bottom. Bracket 13 permits rotation of the attachment to direct the water flow as desired. In the illustration, there is shown a por tion of a bathtub 11 containing water reaching to a level 12. The lower end of the attachment projects beneath the water level and ejects a jet stream of water and air as shown by arrow 13 and bubbles 14. The upper portion of attachment 10 is connected via a flexible hose means 15 to the shower head or any other convenient valved water outlet.
It is particularly convenient to use the shower head for the water supply since independent valves are generally available for controlling the water through this head. A gate valve may be installed on the shower head so that one may alternatively utilize'either the shower or the whirlpool bath attachment. The specific connection to existing plumbing is not germane to the invention. Any of the many means familiar to those in the art may be selected for the most serviceable interconnection.
The details of the invention may be more clearly viewed in the longitudinal cross-section of FIG. 2. As shown therein, there is an outer conduit 20 having substantially right angle bends at upper and lower ends. Within outer conduit 20 there is disposed an inner conduit 21. The upper end of conduit 20 is inserted in a water-tight fashion into a sleeve 22 which in turn is connected to a flexible conduit 24 adapted for coupling to the existing plumbing system. A standard hose connection is an advantageous coupling between sleeve 22 and conduit 29. The function of inner conduit 21 is to conduct air and therefore an aperture 23 is provided in sleeve 22 within which conduit 21 terminates. The aperture 23 is provided with suitable sealing means to prevent'the excape of water at this point. It has been found preferable to utilize a flexible tubing for inner conduit 21; and a rigid tubing for outer conduit 20; however, in certain applications it may be found to be advantageous to utilize either rigid members or flexible members throughout.
The lower end 27 of inner conduit 21 terminates a predetermined distance within, or short of, the end 26 of outer conduit 20. This is an important feature of the invention. It is also important that the inner conduit be the air conductor whereas the outer conduit is the water conductor. A bushing, or sleeve 29, may also be provided on the end of outer conduit 20. This bushing projects inwardly to a position upstream of end 27 and develops a restricted cylindrical aperture 28 with the outer surface of conduit 21.
In a particular embodiment of the invention, outer tubing 20 had an inner diameter of 7/16 of an inch, and inner tubing 21 was a flexible tubing having an outer diameter of 1/4 of an inch. Bushing 29 was securely fitted into end 26 and had an inner diameter of approximately 5/16 of an inch at its upstream end and approximately 3/8 of an inch at the ejection end.
In operation, water under pressure is applied via input hose 24 and flows around the inner conduit 21 and out at the end of outer conduit 20. As a result of the restricted cylindrical aperture 28, the rateof water flow from the end of the apparatus is quite rapid and water is ejected as a jet stream. Air is drawn in at the upper end of conduit 21 and taken up and carried along in large bubbles with the water jet. Thus, at the exit of the attachment, there is a jet stream of water accompanied by air.
Although not yet fully established, it is believed that the advantages of the invention directly accrue from the use of relatively large air bubbles. It appears desirable to initially form the air into relatively large bubbles and to retain this condition as long as possible. This condition is effected by delivering the air at end 27 of the inner conduit in what may be conceived as a rod-like" form. The length of such a rod" of air, before it breaks into a bubble, is determined by the dimensions and materials of the conduits, the size of aperture 28, and the water pressure These relatively large bubbles in turn are acted upon and co-act with, the jet stream of water to perform the function of pushing the existing water in the bath. In effect, one may consider the large bubbles of air as acting somewhat like sails pushed by the jet stream and acting upon the impeding still water of the bath. The co-action of the air and water jet stream is effective in beginning and maintaining a whirlpool action in the bath.
A particular embodiment of the invention has been described. Those skilled in the art will immediately recognize modifications that may be made. All such modifications which come within the spirit and teaching of the invention are intended to be covered by the attached claims.
What is claimed is:
l. A whirlpool bath attachment comprising a pair of sub stantially coaxial conduits adapted to be mounted on a bath tub with the upper end above water level and means for connecting the outer conduit to a source of water. the upper end of the inner conduit being open to the surrounding atmosphere and the lower end of said inner conduit terminating a predetermined distance within the corresponding end of the outer conduit, the cross-sectional area of the water passage at its narrowest point is less than the cross-sectional area of the inner conduit.
2. A whirlpool bath attachment as defined in claim 1 wherein said inner conduit is flexible.
3. A whirlpool bath attachment as defined in claim 1, including a sleeve forming a fluid-tight connection with the upper end of said outer conduit, said sleeve having an aperture therein. and the upper end of said inner conduit forming a fluid-tight connection with the perimeter of said aperture.
4. A whirlpool bath attachment as defined in claim 1, wherein there is a restriction in the cross-sectional area of the outer conduit at a position upstream the end of said inner conduit.
5. A whirlpool bath attachment as defined in claim 4, wherein said restriction is created by an internal sleeve member projecting from a position within said outer conduit and downstream to a position upstream the end of said inner conduit.
6. A whirlpool bath attachment as defined in claim 5, wherein the aperture created by said sleeve member and the outer surface of said inner conduit has a cross-sectional area of approximately one-half that ofsaid inner conduit.
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. a ,672 ,359 Dated June 27 1972 IHVentOI-(S) Charles Krohn It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
In the Abstract Line 5, before "end" insert -emissione-5 Line 6, delete "emission".
Signed and" sealed this 17th day of October 1972.
(SEAL) Attest:
EDWARD M.FLET :HER,JR. ROBERT GOTTSCHALK Attestlng Officer Commissioner of Patents FORM PO-10 0 (10- USCOMM-DC seam-ps9 ,5. GOVERNMENT PRINTING OFFICEZ [959 0-366-334

Claims (6)

1. A whirlpool bath attachment comprising a pair of substantially coaxial conduits adapted to be mounted on a bath tub with the upper end above water level and means for connecting the outer conduit to a source of water, the upper end of the inner conduit being open to the surrounding atmosphere and the lower end of said inner conduit terminating a predetermined distance within the corresponding end of the outer conduit, the cross-sectional area of the water passage at its narrowest point is less than the cross-sectional area of the inner conduit.
2. A whirlpool bath attachment as defined in claim 1, wherein said inner conduit is flexible.
3. A whirlpool bath attachment as defined in claim 1, including a sleeve forming a fluid-tight connection with the upper end of said outer conduit, said sleeve having an aperture therein, and the upper end of said inner conduit forming a fluid-tight connection with the perimeter of said aperture.
4. A whirlpool bath attachment as defined in claim 1, wherein there is a restriction in the cross-sectional area of the outer conduit at a position upstream the end of said inner conduit.
5. A whirlpool bath attachment as defined in claim 4, wherein said restriction is created by an internal sleeve member projecting from a position within said outer conduit and downstream to a position upstream the end of said inner conduit.
6. A whirlpool bath attachment as defined in claim 5, wherein the aperture created by said sleeve member and the outer surface of said inner conduit has a cross-sectional area of approximately one-half that of said inner conduit.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3905358A (en) * 1974-03-18 1975-09-16 Jacuzzi Bros Inc Hydro-air fitting
US4240166A (en) * 1979-01-22 1980-12-23 Thermasol, Ltd. Whirlpool system
FR2460463A1 (en) * 1979-06-29 1981-01-23 Stichting Bouwcentrum APPARATUS FOR HEATING THE WATER OF A BASIN
US4358862A (en) * 1979-01-22 1982-11-16 Thermasol, Ltd. Connector assembly for whirlpool system
US4907305A (en) * 1987-09-04 1990-03-13 Matsushita Electric Works, Ltd. Bubbling bathtub system
DE19631795A1 (en) * 1996-08-07 1997-02-06 Werner Dipl Ing Goedtner Whirlpool system to save piping and ensure removal of water from pump - has non-return valve system in place of supply pipes and emptying of remaining water controlled by volume dependent non-return valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3905358A (en) * 1974-03-18 1975-09-16 Jacuzzi Bros Inc Hydro-air fitting
US4240166A (en) * 1979-01-22 1980-12-23 Thermasol, Ltd. Whirlpool system
US4358862A (en) * 1979-01-22 1982-11-16 Thermasol, Ltd. Connector assembly for whirlpool system
FR2460463A1 (en) * 1979-06-29 1981-01-23 Stichting Bouwcentrum APPARATUS FOR HEATING THE WATER OF A BASIN
US4907305A (en) * 1987-09-04 1990-03-13 Matsushita Electric Works, Ltd. Bubbling bathtub system
DE19631795A1 (en) * 1996-08-07 1997-02-06 Werner Dipl Ing Goedtner Whirlpool system to save piping and ensure removal of water from pump - has non-return valve system in place of supply pipes and emptying of remaining water controlled by volume dependent non-return valve
DE19631795C2 (en) * 1996-08-07 1998-02-26 Werner Dipl Ing Goedtner Whirlpool system with an air supply device to the whirlpool nozzle

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