WO1992003082A1 - Bath unit with water jet devices - Google Patents

Bath unit with water jet devices Download PDF

Info

Publication number
WO1992003082A1
WO1992003082A1 PCT/NL1991/000156 NL9100156W WO9203082A1 WO 1992003082 A1 WO1992003082 A1 WO 1992003082A1 NL 9100156 W NL9100156 W NL 9100156W WO 9203082 A1 WO9203082 A1 WO 9203082A1
Authority
WO
WIPO (PCT)
Prior art keywords
bath
tub
nozzle
air
pipe
Prior art date
Application number
PCT/NL1991/000156
Other languages
French (fr)
Inventor
Adrianus C. H. L. Jansen
Original Assignee
Whirlpool B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Whirlpool B.V. filed Critical Whirlpool B.V.
Publication of WO1992003082A1 publication Critical patent/WO1992003082A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K3/00—Baths; Douches; Appurtenances therefor
    • A47K3/10—Wave-producers or the like, e.g. with devices for admitting gas, e.g. air, in the bath-water
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H33/00—Bathing devices for special therapeutic or hygienic purposes
    • A61H33/0087—Therapeutic baths with agitated or circulated water
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H33/00—Bathing devices for special therapeutic or hygienic purposes
    • A61H33/60—Components specifically designed for the therapeutic baths of groups A61H33/00
    • A61H33/6068—Outlet from the bath
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H33/00—Bathing devices for special therapeutic or hygienic purposes
    • A61H2033/0008—Arrangement for cleaning the installation before or after use
    • A61H2033/0025—Arrangement for cleaning the installation before or after use by connecting the air lines with the drain
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H33/00—Bathing devices for special therapeutic or hygienic purposes
    • A61H33/02—Bathing devices for use with gas-containing liquid, or liquid in which gas is led or generated, e.g. carbon dioxide baths
    • A61H2033/022—Bathing devices for use with gas-containing liquid, or liquid in which gas is led or generated, e.g. carbon dioxide baths with control means for regulating the air volume aspirated by a water jet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H33/00—Bathing devices for special therapeutic or hygienic purposes
    • A61H33/02—Bathing devices for use with gas-containing liquid, or liquid in which gas is led or generated, e.g. carbon dioxide baths
    • A61H2033/023—Bathing devices for use with gas-containing liquid, or liquid in which gas is led or generated, e.g. carbon dioxide baths with means in the air supply lines to prevent back-feed of water, e.g. anti-backflow valves, draining devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H33/00—Bathing devices for special therapeutic or hygienic purposes
    • A61H33/60—Components specifically designed for the therapeutic baths of groups A61H33/00
    • A61H33/6068—Outlet from the bath
    • A61H33/6073—Intake mouths for recirculation of fluid in whirlpool baths

Definitions

  • the invention relates to a bath unit with a bath-tub, pumping devices which are connected by means of a suction pipe to the bath-tub and are connected by means of a supply pipe to at least one nozzle for supplying a water jet, which nozzle has a venturi connected to an air supply, in such a way that air is mixed into the water jet.
  • Such bath units are available in essentially two different designs. In the first design, ambient air is injected into the bath water through nozzles provided in the bottom. A mixed air jet which provides a massage effect is formed in this way. In a second design, water is extracted from the bath and then injected through suitably placed nozzles.
  • nozzles can have a venturi, in such a way that air is entrained in the injected water jet and mixed in.
  • a massage jet consisting of water and air is obtained in this process. Since water can be injected with a greater impulse than air, in this design the nozzles need not be fitted on the bottom of the bath-tub. They can also be placed in the side wall of the tub. The injected water has such an impulse that the centre region of the bath can also be reached with such water jets, in such a way that the total water content of the bath can be set in motion.
  • the design in which air is injected into the bath has the disadvantage that it is less suitable for installation in a bath fitted with a closed surround. The air extracted by the fan and injected into the bath is taken from the surround.
  • the bath units according to the second design generally have nozzles in which no non-return valves have been placed. Such bath units are therefore made self-draining, in other words, when the bath runs empty all pipes for the provision of the water jet must also drain completely. Conversely, when the bath fills up, this pipe system must also fill up in such a way that no air pockets remain in it and prevent the pump motor from being able to function properly.
  • These bath units are therefore designed in such a way that the suction pipe is connected as low down as possible in the bath-tub, while the delivery nozzles are situated above it.
  • the suction pipe is also connected to the suction aperture of the pump, which for the above-mentioned reasons lies at a lower level than the delivery aperture of the pump. It is ensured in this way that when the bath is being filled or emptied the pipe system including pump fills up or drains completely again without air pockets.
  • the object of the invention is then to provide a bath unit of the type mentioned in the preamble, in which the medium to be pumped is water, while the nozzles can still be placed corresponding to the bath units working with air.
  • each nozzle is situated in the bottom or in the side wall near the bottom of the bath-tub, and in that the suction pipe opens out into the bath-tub at a level which is higher than that of each nozzle. If in this case the suction connection of the pump also lies higher than the delivery connection, and the suction pipe opens out into the bath-tub at a level higher than said suction connection, it is also ensured in the case of the bath unit according to the invention that when the bath is filling up the pumping system including pipes will fill up completely, i.e. without air pockets.
  • the nozzles can now be situated in the bottom. This produces a greater risk of one or more nozzles being shut off, for example through the person taking the bath sitting on them.
  • an air supply pipe is connected to each venturi, which pipe has a non-return valve to prevent water from flowing into the air supply pipe in question.
  • the non ⁇ return valve in the air supply pipe is, normally speaking, not exposed to water, which means that the above-mentioned risk of scale deposits does not occur here.
  • Such non-return valves can thus remain functioning perfectly for a very long time.
  • each air supply pipe is connected by means of a non-return valve to a central air chamber.
  • the central air chamber can in this case be provided in a known manner with an air supply pipe which is situated in the edge of the bath and can be shut off.
  • the non-return valves are now situated at a fairly great distance from the nozzles, and also at a higher level, so that the risk of their coming into contact with water is now virtually entirely ruled out.
  • shut-off valve which is operable mechanically and is designed to empty both the bath and the delivery pipe.
  • Figure 1 shows a side view, partially in cross-section, of the bath unit according to the invention.
  • Figures 2a and 2b show details of a nozzle.
  • Figure 3 shows the central air chamber.
  • FIG. 1 Figure *•*. shows an outflow valve for the bath unit.
  • the bath unit shown in Figure 1 comprises a bath-tub 1, and a pumping system 2.
  • This pumping system 2 comprises a fluid pump 3. with a suction connection 4 and a delivery connection 5-
  • a suction pipe 6, opening into a suction aperture 7 in the bath, is connected to the suction connection ty.
  • a delivery pipe 8, connected to the housings 9 for injecting a water/air jet into the bath, is connected to the delivery connection 5-
  • These housings 9 also have connected to them in each case an air supply pipe 10 leading to a central air chamber 11 which can be opened or closed by means of a button 12.
  • the housings 9 each have a water supply 13, connected to the delivery pipe 8.
  • the water fed in flows through a venturi 1*. from the supply 13 to the nozzle_ 1 .
  • air is sucked from the air pipe 10, in such a way that a water/air jet is injected into the bath. All this is achieved through the fact that at the position of the venturi air is entrained in the water jet.
  • each housing 9 The nozzle fixed in each housing 9 is shown in greater detail in
  • This nozzle is provided externally with screw thread 16, by which it can be screwed into a corresponding thread in the housing
  • the nozzle also has drainage holes 17 pointing away from each other, so that the mixed water/ air water jet can reach the outside.
  • non-return valves 18 are provided as shown in Figure 3- As soon as just a little water flows into the air pipe
  • the ball 19 in each non-return valve is pressed against its seat 20, so that the air pipe is closed and the water cannot penetrate any further.
  • the nozzle 15 in question is cleared again, the water flows out through it again, as a result of which air is sucked in again through the air chamber 11 and the ball 20 moves to its open position.
  • the ball in this case comes to rest on the supporting points 21, in such a way that the air can enter the air pipe 10 round the ball 19 and between the supporting points 21.
  • the button 12 is adjustable in a known manner between an open position and a closed position by means of interacting screw threads 22, 23.
  • the delivery pipe is connected to the mechanically operable outflow valve 24 (see Figure k) .
  • This valve can be opened and closed in the known manner by means of lever 26, and is connected to the outflow.
  • the outflow valve has a passage 25 which connects to delivery pipe 10 when the outflow valve 2k is opened. When the outflow valve 2k is closed, the delivery pipe 10 is also closed relative to the outflow. When the water is now drained from the bath by opening the outflow valve 2k , any water which may have collected in the delivery pipe 10 also drains away.

Landscapes

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

Abstract

In a bath unit with a bath-tub (1), pumping devices (3) are provided, connected by means of a suction pipe (6) to the bath-tub (1) and connected by means of a supply pipe (2) to at least one nozzle (15) for supplying a water jet, which nozzle (15) has a venturi (14) connected to an air supply (10) for supplying a water jet, which nozzle (15) has a venturi (14) connected to an air supply (10) in such a way that air is mixed into the water jet. Each nozzle (15) is situated in the bottom or in the side wall near the bottom of the bath-tub (1), and the suction pipe (6) opens out into the bath-tub (1) at a level which is higher than that of each nozzle (15). Furthermore, the suction pipe (4) of the pump (3) lies at a higher level than the delivery connection (5), and the suction pipe (6) opens out into the bath-tub (1) at a higher level (7) than said suction connection (4).

Description

Bath unit with water .iet devices
The invention relates to a bath unit with a bath-tub, pumping devices which are connected by means of a suction pipe to the bath-tub and are connected by means of a supply pipe to at least one nozzle for supplying a water jet, which nozzle has a venturi connected to an air supply, in such a way that air is mixed into the water jet. Such bath units are available in essentially two different designs. In the first design, ambient air is injected into the bath water through nozzles provided in the bottom. A mixed air jet which provides a massage effect is formed in this way. In a second design, water is extracted from the bath and then injected through suitably placed nozzles. These nozzles can have a venturi, in such a way that air is entrained in the injected water jet and mixed in. A massage jet consisting of water and air is obtained in this process. Since water can be injected with a greater impulse than air, in this design the nozzles need not be fitted on the bottom of the bath-tub. They can also be placed in the side wall of the tub. The injected water has such an impulse that the centre region of the bath can also be reached with such water jets, in such a way that the total water content of the bath can be set in motion. The design in which air is injected into the bath has the disadvantage that it is less suitable for installation in a bath fitted with a closed surround. The air extracted by the fan and injected into the bath is taken from the surround. According to regulations, it must be possible to supply air to the surround through a grille in a cavity wall or outside wall of the bathroom. However, it appears that this measure is often ignored in practice. Fitting a grille which opens out into the room itself is not permitted. Besides, a grille placed in this way is undesirable for aesthetic reasons.
All this means that no grille is generally fitted, with the result that a vacuum can occur in the surround. When the blowing in is then stopped, there is a risk of the water from the bath being sucked into the fan, which is not equipped for it, since it is designed for pumping air. All this could be remedied by fitting non-return valves in the nozzles, but this in turn leads to other complications such as, for example, scale deposits. A solution would be to place the fan outside the surround, but again this is not very suitable on account of space problems and the long supply pipes needed for it.
The bath units according to the second design generally have nozzles in which no non-return valves have been placed. Such bath units are therefore made self-draining, in other words, when the bath runs empty all pipes for the provision of the water jet must also drain completely. Conversely, when the bath fills up, this pipe system must also fill up in such a way that no air pockets remain in it and prevent the pump motor from being able to function properly. These bath units are therefore designed in such a way that the suction pipe is connected as low down as possible in the bath-tub, while the delivery nozzles are situated above it. The suction pipe is also connected to the suction aperture of the pump, which for the above-mentioned reasons lies at a lower level than the delivery aperture of the pump. It is ensured in this way that when the bath is being filled or emptied the pipe system including pump fills up or drains completely again without air pockets.
The production of a massage jet by injecting water through a nozzle with a venturi in such a way that air is entrained is more attractive than simply injecting air. As already mentioned above, problems as regards vacuum in the surround are thereby avoided. However, on the other hand, in the case of those designs in which a water jet is injected the nozzles are always placed in the side wall of the bath, for the above- mentioned reasons of perfect filling and emptying of the pumping system.
The object of the invention is then to provide a bath unit of the type mentioned in the preamble, in which the medium to be pumped is water, while the nozzles can still be placed corresponding to the bath units working with air. This is achieved in that each nozzle is situated in the bottom or in the side wall near the bottom of the bath-tub, and in that the suction pipe opens out into the bath-tub at a level which is higher than that of each nozzle. If in this case the suction connection of the pump also lies higher than the delivery connection, and the suction pipe opens out into the bath-tub at a level higher than said suction connection, it is also ensured in the case of the bath unit according to the invention that when the bath is filling up the pumping system including pipes will fill up completely, i.e. without air pockets.
In the case of the bath unit according to the invention the nozzles can now be situated in the bottom. This produces a greater risk of one or more nozzles being shut off, for example through the person taking the bath sitting on them. In order then to prevent the water fed in from escaping through the air connection of the shut-off nozzle, an air supply pipe is connected to each venturi, which pipe has a non-return valve to prevent water from flowing into the air supply pipe in question. The non¬ return valve in the air supply pipe is, normally speaking, not exposed to water, which means that the above-mentioned risk of scale deposits does not occur here. Such non-return valves can thus remain functioning perfectly for a very long time.
Several nozzles are normally fitted in the bath-tub. In that case each air supply pipe is connected by means of a non-return valve to a central air chamber. The central air chamber can in this case be provided in a known manner with an air supply pipe which is situated in the edge of the bath and can be shut off. The non-return valves are now situated at a fairly great distance from the nozzles, and also at a higher level, so that the risk of their coming into contact with water is now virtually entirely ruled out.
In order also to be able to drain a delivery pipe lying under the bath-tub, said pipe is connected to the water outlet of the bath by means of a shut-off valve which is operable mechanically and is designed to empty both the bath and the delivery pipe. The invention will be explained in greater detail below with reference to an example of an embodiment shown in the figures.
Figure 1 shows a side view, partially in cross-section, of the bath unit according to the invention.
Figures 2a and 2b show details of a nozzle. Figure 3 shows the central air chamber.
Figure *•*. shows an outflow valve for the bath unit.
The bath unit shown in Figure 1 comprises a bath-tub 1, and a pumping system 2. This pumping system 2 comprises a fluid pump 3. with a suction connection 4 and a delivery connection 5- A suction pipe 6, opening into a suction aperture 7 in the bath, is connected to the suction connection ty. A delivery pipe 8, connected to the housings 9 for injecting a water/air jet into the bath, is connected to the delivery connection 5- These housings 9 also have connected to them in each case an air supply pipe 10 leading to a central air chamber 11 which can be opened or closed by means of a button 12.
The housings 9 each have a water supply 13, connected to the delivery pipe 8. The water fed in flows through a venturi 1*. from the supply 13 to the nozzle_ 1 . In this process air is sucked from the air pipe 10, in such a way that a water/air jet is injected into the bath. All this is achieved through the fact that at the position of the venturi air is entrained in the water jet.
The nozzle fixed in each housing 9 is shown in greater detail in
Figures 2a and 2b. This nozzle is provided externally with screw thread 16, by which it can be screwed into a corresponding thread in the housing
9. The nozzle also has drainage holes 17 pointing away from each other, so that the mixed water/ air water jet can reach the outside.
As already mentioned, there is a certain risk of the nozzle 15 being shut off by a person taking a bath sitting on it. In order then to prevent the water supplied through the delivery pipe 8 from escaping in that case through the air pipe 10, non-return valves 18 are provided as shown in Figure 3- As soon as just a little water flows into the air pipe
10, the ball 19 in each non-return valve is pressed against its seat 20, so that the air pipe is closed and the water cannot penetrate any further. As soon as the nozzle 15 in question is cleared again, the water flows out through it again, as a result of which air is sucked in again through the air chamber 11 and the ball 20 moves to its open position. The ball in this case comes to rest on the supporting points 21, in such a way that the air can enter the air pipe 10 round the ball 19 and between the supporting points 21. The button 12 is adjustable in a known manner between an open position and a closed position by means of interacting screw threads 22, 23.
Finally, the delivery pipe is connected to the mechanically operable outflow valve 24 (see Figure k) . This valve can be opened and closed in the known manner by means of lever 26, and is connected to the outflow. The outflow valve has a passage 25 which connects to delivery pipe 10 when the outflow valve 2k is opened. When the outflow valve 2k is closed, the delivery pipe 10 is also closed relative to the outflow. When the water is now drained from the bath by opening the outflow valve 2k , any water which may have collected in the delivery pipe 10 also drains away.

Claims

C L A I M S
1. Bath unit with a bath-tub, pumping devices which are connected by means of a suction pipe to the bath-tub and are connected by means of a supply pipe to at least one nozzle for supplying a water jet, which nozzle has a venturi connected to an air supply in such a way that air is mixed into the water jet, characterised in that each nozzle is situated in the bottom or in the side wall near the bottom of the bath-tub, and in that the suction pipe opens out into the bath-tub at a level which is higher than that of each nozzle.
2. Bath unit according to Claim 1, in which the suction pipe of the pump lies at a higher level than the delivery connection, and the suction pipe opens out into the bath-tub at a higher level than said suction connection.
3. Bath unit according to Claim 1 or 2, in which an air supply pipe having a non-return valve is connected to each venturi, in order to prevent water from flowing into the air supply pipe in question. k . Bath unit according to Claim 3. in which each air supply pipe is connected by means of a non-return valve to a central air chamber.
5. Bath unit according to any of the preceding claims, in which the delivery pipe is connected to the water outlet of the bath by means of a shut-off valve which is operable mechanically and is designed to drain both the bath and the delivery pipe.
PCT/NL1991/000156 1990-08-23 1991-08-21 Bath unit with water jet devices WO1992003082A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9001864A NL9001864A (en) 1990-08-23 1990-08-23 BATH DEVICE WITH WATER JETS.
NL9001864 1990-08-23

Publications (1)

Publication Number Publication Date
WO1992003082A1 true WO1992003082A1 (en) 1992-03-05

Family

ID=19857574

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1991/000156 WO1992003082A1 (en) 1990-08-23 1991-08-21 Bath unit with water jet devices

Country Status (5)

Country Link
EP (1) EP0548102A1 (en)
AU (1) AU8390791A (en)
CA (1) CA2090728A1 (en)
NL (1) NL9001864A (en)
WO (1) WO1992003082A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0580265A1 (en) * 1992-07-23 1994-01-26 Pieter Johannes Van Ouwerkerk Whirlpool bath system
DE9304009U1 (en) * 1993-03-18 1994-02-10 Schiller Reinhard Massage nozzle
EP1654969A1 (en) * 2004-11-04 2006-05-10 Mara Fregnani Shower enclosure with massaging properties
JP2015108494A (en) * 2013-12-06 2015-06-11 パナソニックＩｐマネジメント株式会社 Bath adapter and water heater
JP2015108493A (en) * 2013-12-06 2015-06-11 パナソニックＩｐマネジメント株式会社 Bath adapter and water heater
EA036113B1 (en) * 2015-11-04 2020-09-30 Франц Кальдевай Гмбх Унд Ко. Кг Bathwater circulating system, sanitary bathtub and method of operating the bathwater circulating system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2919313A1 (en) * 1979-05-14 1980-11-27 Theo Kilian Bath with built-in underwater massage system - has several nozzles linked by pipes with circulating pump forcing round bath water
DE3446309C1 (en) * 1984-12-19 1986-02-13 MAG Walter Frenkel Medizinische Apparate und Geräte, 7483 Inzigkofen Water return valve
WO1986001100A1 (en) * 1984-08-08 1986-02-27 Aquatech Marketing Limited Improvements relating to spas or whirlpool baths
GB2217986A (en) * 1988-04-05 1989-11-08 John Murfin Whirlpool/spa bath drainage valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2919313A1 (en) * 1979-05-14 1980-11-27 Theo Kilian Bath with built-in underwater massage system - has several nozzles linked by pipes with circulating pump forcing round bath water
WO1986001100A1 (en) * 1984-08-08 1986-02-27 Aquatech Marketing Limited Improvements relating to spas or whirlpool baths
DE3446309C1 (en) * 1984-12-19 1986-02-13 MAG Walter Frenkel Medizinische Apparate und Geräte, 7483 Inzigkofen Water return valve
GB2217986A (en) * 1988-04-05 1989-11-08 John Murfin Whirlpool/spa bath drainage valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0580265A1 (en) * 1992-07-23 1994-01-26 Pieter Johannes Van Ouwerkerk Whirlpool bath system
DE9304009U1 (en) * 1993-03-18 1994-02-10 Schiller Reinhard Massage nozzle
EP1654969A1 (en) * 2004-11-04 2006-05-10 Mara Fregnani Shower enclosure with massaging properties
JP2015108494A (en) * 2013-12-06 2015-06-11 パナソニックＩｐマネジメント株式会社 Bath adapter and water heater
JP2015108493A (en) * 2013-12-06 2015-06-11 パナソニックＩｐマネジメント株式会社 Bath adapter and water heater
EA036113B1 (en) * 2015-11-04 2020-09-30 Франц Кальдевай Гмбх Унд Ко. Кг Bathwater circulating system, sanitary bathtub and method of operating the bathwater circulating system

Also Published As

Publication number Publication date
NL9001864A (en) 1992-03-16
EP0548102A1 (en) 1993-06-30
CA2090728A1 (en) 1992-02-24
AU8390791A (en) 1992-03-17

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