WO1994000077A1 - Water heater for use with dental equipment - Google Patents
Water heater for use with dental equipment Download PDFInfo
- Publication number
- WO1994000077A1 WO1994000077A1 PCT/US1993/005751 US9305751W WO9400077A1 WO 1994000077 A1 WO1994000077 A1 WO 1994000077A1 US 9305751 W US9305751 W US 9305751W WO 9400077 A1 WO9400077 A1 WO 9400077A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vessel
- water heater
- heating device
- temperature
- chamber
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/025—For medical applications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/0061—Air and water supply systems; Valves specially adapted therefor
- A61C1/0069—Fluid temperature control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
Abstract
A cylindrical shaped water heater (10) is provided for heating water to a temperature suitable for dental operations. The heater has an annular chamber (32) for combining water to be heated, the chamber being defined by an outer tube (26) and an inner tube (24) positioned concentrically therein. An electrical heating device (38) is disposed within the inner tube and thermostats (40, 42) are arranged on the outer tube for controlling the water temperature. Cold water from a suitable source is fed into the chamber through a suitable inlet, the heated water being connected to a syringe through a suitable conduit.
Description
ATER HEATER FOR USE WITH DENTAL EQUIPMENT
TECHNICAL FIELD The present invention relates to a water heater designed for rapidly heating cold water to a temperature that is suitable for dental operations without the necessity for storing the water in a reservoir.
BACKGROUND INFORMATION Patient's comfort is an important objective in modern dentistry. The delivery of cold fluid, such as water, into a patient's mouth during treatment can be very discomforting when the patient's teeth and gums are sensitive to sudden changes in temperature. It is a particular problem when, during the performance of certain surgical operations such as a root canal, exposed tissues in nerve endings are washed with cold water.
It is therefore desirable to preheat the water before it is delivered into the patient's mouth. However, the water must not be too hot or similar undesirable effects will result. A near body temperature of the water is preferred.
Conventional water heaters for use with dental equipment are sometimes provided with a large storage container in which water is stored after it has been heated by an electric or gas heater. The size of the container is usually large enough to store all of the water that a dentist would normally demand on several hours or a day. Because of stand-by storage of water in a standard tank, even a well insulated tank loses the heat necessary to keep a constant water temperature.
Since water is often used on a rather intermittent basis by dentists, the cost of keeping the water at a continuous temperature is high with regard to the specific amount of water that is used and the storage tank is bulky and occupies valuable space. Moreover, the tank may be at a point remote from the dentist's point of use and hence the temperature of the water at the point of use is difficult to control.
Therefore, a conventional water heating system based on a large storage tank is often inefficient when utilized for intermittent dental use. In the prior art, rapid water heaters have been developed to heat water immediately prior to its use. Typically, these heaters are based on complicated and expensive baffle systems or thermostat designs where thermostats are submerged into the water to be heated. A thermostat based on the temperature of the water sometimes over lags the water temperature and control of the water temperature is erratic. Other water heaters include heating devices and thermostats designed into the handle of a dental syringe. One shortcoming of this design approach is that it is sometimes difficult to keep the temperature of the water within a narrow range and the syringe handles are often expensive to manufacture.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a water heater that is designed to rapidly heat cold water so that the water can be passed directly from a heater to a syringe without the need for maintaining a reservoir of water.
More particularly, it is an object of the present invention to provide an efficient, compact water heater which discharges water to the syringe at a temperature that is suitable for dental operations. It is still another object of the present invention to provide a water heater that is designed to secure a good mix of the entering cold water and the water being heated without the necessity of a baffle system.
This invention achieves these and other objectives by providing a physically small water heater that is adapted to being located adjacent a dental chair for rapidly heating cold water so that cold water can be heated as it flows through the device and passed directly from the device to a syringe through a short length of tubing or conduit. The device includes an
inner tube in which is mounted an electrical heating device and a surrounding outer tube though which flows the water to be heated. Thermostats are mounted on the outer tube to control the temperature of the water. BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view of a water heater constructed in accordance with the invention;
Fig. 2 is a top view of the device showing first and second thermostats mounted thereon; Fig. 3 is a sectional view taken along line 3-3 of Fig. 2;
Fig. 4 is an end view taken along line 4-4 of Fig. 2;
Fig. 5 is a sectional view taken along line 5-5 of Fig. 2; and
Fig. 6 is a sectional view of the device taken along line 6-6 of Fig. 3 and schematically illustrating the electrical circuits to the serially connected thermostats. DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
Referring to the drawings, Fig. 1 illustrates a cylindrical shaped water heater 10 constructed in accordance with the present invention and positioned within a control head 12 for a dental unit. The device of the invention is particularly adapted for heating water for a dental syringe 14 to which heated water may be conducted through a short, flexible outlet conduit 16. The water heater will be described in more detail below. The outlet conduit 16 is preferable contained within an insulating outer conduit 18 for reducing any heat loss of the water flowing through the outlet conduit 16 to the syringe 14. Preferably, the control head 12 should be situated relatively close to a patient so that the outlet conduit 16 can be made as short as possible to reduce heat loss of the water flowing from the water heater 10 to the syringe 14. Water is supplied to the water heater 10 through a suitable inlet
conduit 20 contained within a mounting arm 22 supporting the control head 12.
Referring to Figs. 2-6, the water heater 10 includes a cylindrical inner tube or vessel 24 and a generally cylindrical outer tube or vessel 26 both of which are preferable made of brass or other non- corroding metal having high heat transfer capability. The outer tube 26 receives the inner tube 24 and is concentric therewith. The opposite ends of the outer tube 26 are closed by annular end closures 28, 29. A portion of the wall of the outer tube 26 is crimped into contact with the inner tube 24, as best shown in Fig. 3, and provides a flattened peripheral surface area 30. The significance of this contact is further explained below. The outer tube 26, except for the flattened area 30, has a greater diameter than the inner tube 24 whereby an annual chamber 32 is defined by the inner tube 24 and the outer tube 26.
The end closure 29 of the chamber 32 has a water inlet 34 and a water outlet 36 extending therethrough for conducting water into and out of the chamber 32. Both the inlet 34 and the outlet 36 are barbed as indicated at 37 and 39, respectively, for removable securement of the inlet conduit 20 and outlet conduit 16.
Referring to Figs. 3 and 6, an electrical resistance heating device 38 of conventional construction is disposed within the inner tube 24 for heating the same thereby to heat water flowing through the chamber 32 so that water flowing out of the outlet 36 has a higher temperature than water flowing in through the inlet 34. The heating device 38 preferably comprises a resistance type heating element (not shown) embedded in a cylindrical ceramic body which in turn is surrounded by a protective stainless steel sheath. A small annular gap 41 is provided between the heating device 38 and the inner tube 24. The gap 41 is filled with a silicone based heat transfer compound (not shown)
to improve the transfer of heat from the heating device 38 to the inner tube 24. In a preferred embodiment of the invention, the gap 41 is about 0.005".
As shown in Figs. 2-5, a first thermostat 40 is mounted to the outer tube 26 in the flattened area 30. The thermostat 40 is responsive to the temperature of the wall of the inner tube 24 through the transfer of heat to the flattened area 30 of the outer tube 26. The thermostat 40 is bonded to the flattened area 30 of the outer tube 26 by a thermally conductive bonding material such as by a suitable epoxy adhesive. The thermostat 40 is preferably adapted to close when it senses a temperature below about 110°F and to open at a temperature of about 130°F. A second thermostat 42 is mounted to the outer tube 26 and which is normally closed at temperatures below 150° but which opens upon sensing a temperature of 150°F. The thermostat 42 is normally closed because it is mainly function as a safety device. If the thermostat 40 should malfunction and not open at temperatures above 130°F then the thermostat 42 will open at 150°F to prevent over-heating of the water in the chamber 32. The thermostat 42 is also preferably bonded to the outer tube 26 by a heat conductive epoxy adhesive or similar material.
Referring to Figs. 3 and 6, an electrical source 44, such as a 24-volt A.C. source, is serially connected to the heating device 38 and thermostats 40 and 42. One terminal of the electrical source 44 is connected to the heating device 38 by an electrical lead 46. The other terminal is connected by an electrical lead 50 to the thermostat 42 which is serially connected to the thermostat 40 by an electrical lead 52. The thermostat 40, in turn, is connected to the other side of the heating device 38 by an electrical lead 54.
In operation, upon water demand by the syringe 14, cold water is supplied to the water heater 10 by the inlet conduit 20 through the inlet 34 into the chamber
32. As the cold water lowers the temperature of the outer tube 26 to 110°F the thermostat 40 closes to activate the heating device 38. Since the thermostat 40 is mounted in the flattened area 30 which is in contact with the tube 24, the thermostat is very responsive to any drop in temperature of the wall of the tube 24 beneath the desired minimum temperature. When the temperature of the water being heated, and thus the area of the outer tube 26 beneath the thermostat 40, is about 130°F, the thermostat 40 will open to open the circuit to the heating device 38 thus preventing overheating of the water. As mentioned earlier, if the thermostat 40 should malfunction and not open at about 130°F, the thermostat 42 acts as a safety mechanism and will open if the temperature of the outer tube 26 reaches about 150°F.
Eddy currents generated by the heating of water serve to secure a good mix of the entering cold water and the water being heated without the need for a baffle system. Due to the quick responsiveness of the thermostat 40, water heated to a temperature between about 110°F and 130°F can be supplied to the syringe 14 without having to maintain a reservoir of heated water. It is to be noted that water temperatures below 110° and above 130°F can be supplied to syringe 14 by adjusting the thermostats 40, 42.
To reduce heat loss of the water heater 10, it can be enclosed in a casing (not shown) provided with an insulating layer between water heater 10 and the casing. Glass filled nylon and other resin matrices have been found to be suitable materials for the casing.
Having illustrated and described the principles of my invention by what is presently a preferred embodiment, it should be apparent to those persons skilled in the art that the illustrated embodiment may be modified without departing from such principles. I claim as my invention, not only the illustrated embodiment, but all such modifications, variations and
equivalents thereof as come within the true spirit and scope of the following claims.
Claims
1. A water heater for use with dental equipment, comprising: a cylindrical inner vessel; a cylindrical outer vessel dimensioned for receiving said inner vessel and concentric therewith, a chamber defined between said inner and outer vessel, said outer vessel having first and second closed ends, and means defining a fluid inlet and a fluid outlet to said chamber; a heating device disposed in said inner vessel for heating fluid flowing through said chamber so that fluid flowing out through said outlet has a higher temperature than fluid flowing in through said inlet; and a first thermostat mounted to said outer vessel responsive to a temperature of said vessel operatively connected to said heating device for activating said heating device when said temperature of said outer vessel is below a first predetermined temperature.
2. The water heater in claim 1 wherein said water heater includes a second thermostat for de¬ activating said heating device when said outer vessel reaches a second predetermined temperature, said second predetermined temperature being higher than said first predetermined temperature.
3. The water heater of claim 1 wherein said heating device is an electrical resistant heating device.
4. The water heater of claim 3 wherein said first and second thermostats and said heating device are serially connected to an electrical source.
5. The water heater of claim 1 wherein said outer vessel includes a flattened area in contact with said inner vessel said flattened area receiving said first thermostat.
6. A water heater for use with dental equipment, comprising: an inner tube; an outer tube of larger diameter than said inner tube and generally spaced therefrom, said outer tube receiving said inner tube, said outer tube including a flattened area configured so that said flattened area is in contact with said inner tube, said outer tube having first and second ends, the first end defining a fluid inlet and a fluid outlet; a chamber defined between said inner and outer tube so that fluid flowing into said chamber through said inlet flows out of said chamber through said outlet; a heating device in said inner tube for heating fluid flowing into said chamber; and a thermostat externally mounted to said outer vessel in said flattened area.
7. The water heater of claim 6 wherein said outer vessel is concentric with said inner vessel.
8. The water heater of claim 6 wherein said inlet is adjacent to said outlet.
9. The water heater of claim 6 wherein said tubes are made of a heat conductive material.
10. The water heater of claim 9 wherein said heat conductive material is brass.
11. The water heater of claim 6 wherein said water heater includes a cut-off thermostat operatively connected to said heating device.
12. The water heater of claim 7 wherein said inner and outer vessels are cylindrical.
13. A water heater for use with dental equipment comprising: a cylindrical inner vessel; a generally cylindrical outer vessel receiving the inner vessel and concentric therewith, the outer vessel having two closed ends and a flattened peripheral area, the flattened area being in contact with the inner vessel, said outer vessel except for said flattened area being of greater diameter than said inner vessel whereby -lo¬
an annular chamber is defined by said vessels, one end of said chamber having a fluid inlet and a fluid outlet therein for conducting fluid into and out of said chamber; an electrical resistance heating device disposed within the inner vessel for heating the same thereby to heat fluid flowing through said chamber so that fluid flowing through the fluid outlet has a higher temperature than fluid flowing in through the fluid inlet; a first thermostat mounted to the outer vessel responsive to the temperature of the vessel for activating the heating device when the temperature of the outer vessel is below about 110°F and deactivating said heating device when the temperature is about 130°F; a second thermostat mounted to the outer vessel responsive to the temperature of the vessel for deactivating the heating device when the temperature of the outer vessel reaches about 150°F; and circuit means for serially connecting said heating device and said thermostats to a source of electrical energy.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU46364/93A AU4636493A (en) | 1992-06-19 | 1993-06-15 | Water heater for use with dental equipment |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US901,557 | 1992-06-19 | ||
US07/901,557 US5257341A (en) | 1992-06-19 | 1992-06-19 | Compact in-line thermostatically controlled electric water heater for use with dental instruments |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994000077A1 true WO1994000077A1 (en) | 1994-01-06 |
Family
ID=25414417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1993/005751 WO1994000077A1 (en) | 1992-06-19 | 1993-06-15 | Water heater for use with dental equipment |
Country Status (3)
Country | Link |
---|---|
US (1) | US5257341A (en) |
AU (1) | AU4636493A (en) |
WO (1) | WO1994000077A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106236308A (en) * | 2016-08-22 | 2016-12-21 | 山东新华医疗器械股份有限公司 | Spray gun for dentist with aqueous vapor heating function |
CN108266890A (en) * | 2016-12-30 | 2018-07-10 | 杭州三花研究院有限公司 | Electric heater |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090143775A1 (en) * | 1995-08-31 | 2009-06-04 | Rizoiu Ioana M | Medical laser having controlled-temperature and sterilized fluid output |
US5724478A (en) * | 1996-05-14 | 1998-03-03 | Truheat Corporation | Liquid heater assembly |
JPH1028737A (en) | 1996-07-16 | 1998-02-03 | Metoran:Kk | Humidification adjusting unit and humidifier for artificial respirator and manufacture of humidification adjusting unit |
JP3748466B2 (en) | 1996-08-23 | 2006-02-22 | 株式会社メトラン | Humidification adjustment unit and method for manufacturing humidification adjustment unit |
US6212333B1 (en) | 1998-02-13 | 2001-04-03 | M. Joseph Olk | Medical unit water line sterilization system |
US20010041206A1 (en) * | 1998-06-18 | 2001-11-15 | Chidambaram Raghavan | Method and apparatus for pressure processing a pumpable substance |
US7220381B2 (en) | 2001-06-15 | 2007-05-22 | Avure Technologies Incorporated | Method for high pressure treatment of substances under controlled temperature conditions |
US6804459B2 (en) | 2001-06-15 | 2004-10-12 | Flow International Corporation | Method and apparatus for changing the temperature of a pressurized fluid |
EP1495702A1 (en) * | 2003-07-10 | 2005-01-12 | Nestec S.A. | Device for the extraction of a cartridge |
US20050048436A1 (en) * | 2003-08-29 | 2005-03-03 | Udi Fishman | Handpiece apparatus and method for dispensing media |
US7690395B2 (en) | 2004-01-12 | 2010-04-06 | Masco Corporation Of Indiana | Multi-mode hands free automatic faucet |
WO2005121651A1 (en) * | 2004-06-09 | 2005-12-22 | Joseph Thomas Kapczuk | Water heater |
EP1778117A4 (en) * | 2004-07-27 | 2012-10-03 | Biolase Tech Inc | Medical laser having controlled-temperature and sterilized fluid output |
JP3974908B2 (en) | 2004-09-14 | 2007-09-12 | 株式会社ナカニシ | Dental water heater |
US20060205332A1 (en) * | 2005-03-11 | 2006-09-14 | Flow International Corporation | Method to remove meat from crabs |
US9243756B2 (en) | 2006-04-20 | 2016-01-26 | Delta Faucet Company | Capacitive user interface for a faucet and method of forming |
US8162236B2 (en) | 2006-04-20 | 2012-04-24 | Masco Corporation Of Indiana | Electronic user interface for electronic mixing of water for residential faucets |
US8365767B2 (en) | 2006-04-20 | 2013-02-05 | Masco Corporation Of Indiana | User interface for a faucet |
US8089473B2 (en) | 2006-04-20 | 2012-01-03 | Masco Corporation Of Indiana | Touch sensor |
US20100216090A1 (en) * | 2006-06-27 | 2010-08-26 | Koninklijke Philips Electronics N.V. | liquid droplet spray cleaning system for teeth with temperature and filter controls |
US9243392B2 (en) | 2006-12-19 | 2016-01-26 | Delta Faucet Company | Resistive coupling for an automatic faucet |
WO2008094651A1 (en) | 2007-01-31 | 2008-08-07 | Masco Corporation Of Indiana | Capacitive sensing apparatus and method for faucets |
US7806141B2 (en) | 2007-01-31 | 2010-10-05 | Masco Corporation Of Indiana | Mixing valve including a molded waterway assembly |
CA2675417C (en) | 2007-03-28 | 2015-10-13 | Masco Corporation Of Indiana | Improved capacitive touch sensor |
AU2008306060C1 (en) * | 2007-10-04 | 2015-08-27 | Société des Produits Nestlé S.A. | Beverage brewing unit |
KR20100065200A (en) * | 2007-10-04 | 2010-06-15 | 네스텍 소시에테아노님 | Integrated heater for a beverage preparation device |
CL2008002963A1 (en) | 2007-10-04 | 2010-01-22 | Nestec Sa | Heating device for a machine for the preparation of liquid food or drink, comprising a thermal unit with a metallic mass, through which the liquid circulates, and accumulates heat and supplies it to the liquid, and has one or more insured electrical components rigidly to the thermal unit; and machine. |
WO2009075858A1 (en) | 2007-12-11 | 2009-06-18 | Masco Corporation Of Indiana | Capacitive coupling arrangement for a faucet |
US8850957B2 (en) * | 2008-04-22 | 2014-10-07 | Nestec S.A. | Modular assembly of a beverage preparation machine |
WO2010015427A1 (en) * | 2008-08-08 | 2010-02-11 | Nestec S.A. | Beverage machine with carrying handle and configurable appearance & side functions |
US8776817B2 (en) | 2010-04-20 | 2014-07-15 | Masco Corporation Of Indiana | Electronic faucet with a capacitive sensing system and a method therefor |
US8561626B2 (en) | 2010-04-20 | 2013-10-22 | Masco Corporation Of Indiana | Capacitive sensing system and method for operating a faucet |
DE202010006739U1 (en) * | 2010-05-12 | 2010-08-19 | Türk & Hillinger GmbH | Heater |
CN102287919B (en) * | 2010-06-15 | 2013-12-25 | 广东万和电气有限公司 | Water inlet device of electric water heater |
US9395102B2 (en) * | 2014-06-25 | 2016-07-19 | Mag Aerospace Industries, Llc | Self regulating inline heater |
US11002465B2 (en) * | 2014-09-24 | 2021-05-11 | Bestway Inflatables & Materials Corp. | PTC heater |
IT201600078782A1 (en) * | 2016-07-27 | 2018-01-27 | Irca Spa | COVER FOR CENTRIFUGAL PUMP |
JP7303972B1 (en) | 2023-02-01 | 2023-07-06 | 株式会社エム・ディ・インスツルメンツ | dental water heater |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1671677A (en) * | 1927-03-14 | 1928-05-29 | Henry H Keeton | Electric water heater |
US3638619A (en) * | 1970-06-17 | 1972-02-01 | Itt | Thermostatically controlled liquid-heating tank |
EP0004506A2 (en) * | 1978-03-21 | 1979-10-03 | COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel | Device for heating a liquid to a given temperature |
US4249899A (en) * | 1979-02-14 | 1981-02-10 | A-Dec, Inc. | Warm water dental syringe |
EP0232870A1 (en) * | 1986-02-07 | 1987-08-19 | NATIONAL PATENT DENTAL PRODUCTS Inc. | Apparatus for supplying a heated liquid |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE20704E (en) * | 1938-04-19 | Dental syringe | ||
US1351779A (en) * | 1918-11-25 | 1920-09-07 | Alonzo C Mather | Electric heater |
US1543012A (en) * | 1922-12-11 | 1925-06-23 | Apostolos Konias Klimis | Instantaneous heater |
US1595819A (en) * | 1925-06-18 | 1926-08-10 | Ludwig L Bluemlein | Water heater |
US1724767A (en) * | 1928-04-13 | 1929-08-13 | Robert A Mercer | Dental water heater |
US1807951A (en) * | 1928-11-21 | 1931-06-02 | Ahern William Albert | Water heater |
US2098732A (en) * | 1937-04-19 | 1937-11-09 | Thomas F Prather | Dental apparatus |
US2390710A (en) * | 1944-07-18 | 1945-12-11 | Chester J Henschel | Dental engine accessory equipment |
US2813964A (en) * | 1956-08-20 | 1957-11-19 | Ralph G Cerulli | Electric hot water house heating systems and novel preheaters and tanks for hot water |
US3089941A (en) * | 1961-06-27 | 1963-05-14 | Hanau Engineering Co Inc | Water heater |
CA1102858A (en) * | 1977-09-15 | 1981-06-09 | Richard H.J. Rynard | Engine coolant heater with control thermostat |
US4184064A (en) * | 1977-11-28 | 1980-01-15 | Amark Industries, Inc. | Water heating means |
JPS5640008U (en) * | 1979-09-07 | 1981-04-14 | ||
DE2948591A1 (en) * | 1979-12-03 | 1981-06-11 | Fa. Fritz Eichenauer, 6744 Kandel | CONTINUOUS HEATER |
US4458138A (en) * | 1980-12-15 | 1984-07-03 | Adrian Glenn J | Fast recovery electric fluid |
US4871089A (en) * | 1986-09-29 | 1989-10-03 | Rader Edward F | Hot water dispenser |
US4808793A (en) * | 1986-11-13 | 1989-02-28 | Everhot Corporation | Tankless electric water heater with instantaneous hot water output |
US4892996A (en) * | 1987-08-25 | 1990-01-09 | Trw Technar Inc. | Thermostatically controlled in-line diesel fuel heater using a bimetal disc thermostat |
US4831236A (en) * | 1987-09-14 | 1989-05-16 | Rj Lee Group, Inc. | Apparatus for clearing a cellulose ester filter |
US5020127A (en) * | 1987-10-23 | 1991-05-28 | Energy Saving Products Of Tennesse, Inc. | Tankless electric water heater |
-
1992
- 1992-06-19 US US07/901,557 patent/US5257341A/en not_active Expired - Fee Related
-
1993
- 1993-06-15 WO PCT/US1993/005751 patent/WO1994000077A1/en active Search and Examination
- 1993-06-15 AU AU46364/93A patent/AU4636493A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1671677A (en) * | 1927-03-14 | 1928-05-29 | Henry H Keeton | Electric water heater |
US3638619A (en) * | 1970-06-17 | 1972-02-01 | Itt | Thermostatically controlled liquid-heating tank |
EP0004506A2 (en) * | 1978-03-21 | 1979-10-03 | COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel | Device for heating a liquid to a given temperature |
US4249899A (en) * | 1979-02-14 | 1981-02-10 | A-Dec, Inc. | Warm water dental syringe |
EP0232870A1 (en) * | 1986-02-07 | 1987-08-19 | NATIONAL PATENT DENTAL PRODUCTS Inc. | Apparatus for supplying a heated liquid |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106236308A (en) * | 2016-08-22 | 2016-12-21 | 山东新华医疗器械股份有限公司 | Spray gun for dentist with aqueous vapor heating function |
CN106236308B (en) * | 2016-08-22 | 2018-09-25 | 山东新华医疗器械股份有限公司 | Spray gun for dentist with aqueous vapor heating function |
CN108266890A (en) * | 2016-12-30 | 2018-07-10 | 杭州三花研究院有限公司 | Electric heater |
CN108266890B (en) * | 2016-12-30 | 2021-06-25 | 杭州三花研究院有限公司 | Electric heater |
Also Published As
Publication number | Publication date |
---|---|
US5257341A (en) | 1993-10-26 |
AU4636493A (en) | 1994-01-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5257341A (en) | Compact in-line thermostatically controlled electric water heater for use with dental instruments | |
US4709135A (en) | Device to heat infusion and transfusion solutions | |
US5195976A (en) | Intravenous fluid temperature regulation method and apparatus | |
US4293762A (en) | Temperature-controlled electric heating device for heating instillation or transfusion liquids | |
US5108372A (en) | Intravenous fluid temperature regulation method and apparatus | |
US1995302A (en) | Adjustable heating infusion apparatus | |
EP1272135B1 (en) | Warmer for medical treatment | |
EP1315531A2 (en) | Heating system for intravenous fluid delivery | |
IL141980A (en) | Portable intravenous fluid warming system | |
JPS58501659A (en) | Electrochemical measurement electrode device for blood parameter transcutaneous measurement and blood parameter transcutaneous measurement device | |
AU590680B2 (en) | Apparatus and method for supplying heated liquid | |
KR200394155Y1 (en) | Warm Water Feeder The Moment | |
KR20030028815A (en) | Apparatus for heating blood or another physiological fluid | |
DE3367064D1 (en) | Cartridge heater with an overload cut-out | |
Russell | A review of blood warmers for massive transfusion | |
US1092643A (en) | Surgical apparatus. | |
EP0608317A1 (en) | Electronically controlled air and water heating apparatus for rotary dental instruments | |
EP3560674A1 (en) | Conduit for a liquid dispenser, method of producing it and use thereof | |
JPH1024102A (en) | Heater for heating dialysis liquid | |
GB2035764A (en) | Electric water heater | |
EP0233560A2 (en) | Heater device | |
US2879372A (en) | Heat exchangers | |
JPH1085323A (en) | Heater for warming dialyzing fluid | |
GB2098640A (en) | Water closet seats | |
JPS62253076A (en) | Blood preheating apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU DE GB JP |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |