US2574587A - Hot water circulator - Google Patents
Hot water circulator Download PDFInfo
- Publication number
- US2574587A US2574587A US6204A US620448A US2574587A US 2574587 A US2574587 A US 2574587A US 6204 A US6204 A US 6204A US 620448 A US620448 A US 620448A US 2574587 A US2574587 A US 2574587A
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- water
- riser
- hot water
- opening
- chamber
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0028—Instruments or appliances for wax-shaping or wax-removing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/18—Control
Definitions
- the present invention relates to a, portable hot water circulating device.
- the device of the present invention is of particular advantage for use in the art of mechanical dentistry and in other arts, wherein wax molds are utilized, or wax mold linings for producing castings of plastic materials or gold or other precious metals.
- the most convenient method for accomplishing the melting away of the wax from the casting or from the plaster mold has been found to be the applicationand use of hot water; a method very extensively used in the art.
- Hot water for the above purpose ha been generally obtained from a. pot. or-like container set over a stove orsimilar heating device.
- the mold and castings were held over thepot and the hot Water applied with a ladle or the like.
- the present invention provides a device-whichwill eliminate-allot the foregoing disadvantages
- Fig. 1 is'a-perspective view of one preferred
- a pot or similar open endedcontainer It suitable for having the water I I heated therein, as by a heating device over which it, is
- the pot It! may, preferably, be straight walled or may have its wallslightly outwardly tapering, as illustrated, to provide ample surface areav for working there,-
- the hot water circulating device of the present invention is the hot water circulating device of the present invention, generally. designated as I3.
- Thedevice 13 comprises aninverted, opened bottom, hollow base portion H, which may be of conical, dome or similar shape and of a size adapted to cover a substantially large area of the bottom of the pot In.
- the base I4 is provided at or adjacent its bottom edge with a plurality of apertures I5, for the circulation of the water H therethrough.
- the base I4 is also provided at approximately its highest point with an opening l6, into which is set a riser tube ll, of a height to extend a sub,
- the upper end of the riser supports a water chamber or reservoir l8, consisting of a lower, preferably oval shaped receptacle portion I 9, and a correspondingly shaped cover portion 20, which fits tightly and securely within or over the receptacle I9.
- the cover may, if desired, be further securely attached in place as by means of screws passing through the cover 20 and engaging in the edges of the receptacle portion l9,
- One end of the receptacle portion l9 may be of reduced depth and have a level floor portion 2
- the opening 22, may be formed with an inwardly extending sleeve 23, which may be provided with the internally formed threads 24, by which it may be supported and engaged on the corresponding threads formed on the end of the riser l1, forming a steady, secure and substantially liquid proof connection therewith. It will be apparent that other suitable means for supporting and securing the chamber 19 on the riser l1, may be utilized.
- the opposed end of the receptacle portion l9 may be formed with a depending nozzle 25, having the outlet opening 26 formed therein.
- Such opening 26 is formed to be of lesser size, as onehalf or one-third of the size of the inlet opening formed by the end of the riser IT, entering the chamber l8.
- a steam escape tube 21 extending preferably above the end of the riser IT and a water overflow tube 28, extending preferably to a point below the end of the riser II.
- the boiling water in the pot H which is encompassed within the base l4, rises by the steam pressure generated through the opening 16 into the riser l1. and thence into the water chamber I8.
- the mixture of water and steam separates; the water falling to the bottom and the steam escaping through the tube 21.
- the outlet opening from the Water chamber 26 is of lesser size than the inlet through the riser, the water I I accumulates on the bottom of the chamber l9, and is discharged therefrom, through the opening 26 in a constant flowing stream; thus converting the intermittent, pulsating spurts of water coming in through the riser l1, into a constantly flowing stream capable of performing continuous, wax melting work. Any excess water that may come into the chamber [9, will be discharged through the tube 28, thereby establishing a fixed water level within the chamber l9.
- the chamber may have 8. depending, downwardly tapering sleeve 30 per end of such sleeve encompassing the opening 22, and the openings for the tubes, 21 and 28, and the lower end thereof tapering to fit snugly around the riser H.
- the sleeve 30 may have a plurality of apertures, such as 3
- the sleeve 30 not only serves to steady the chamber l8, on the riser II, but also to condense any steam escaping through the tube 21, and to return such condensed steam as well as the overflow water from the tube 28, back into the pot l0, and serves as well to deaden and silence the noise otherwise incident to the operation of the device.
- the base 14, and riser l1 may be so formed and arranged that the riser l1, emerges from the pot l0, up against or close to the wall thereof, so thatthe nozzle 25 is disposed adjacent the center of the pot opening.
- the riser I! may be sloped or bent along its lower portion, or preferably, as illustrated, the base I4 may be so shaped that it has its apex at one end thereof wherein the opening I5 is formed, so that by merely disposing the device along a side of the pot, the riser will emerge therefrom in suitable position. Additional advantage may be attained, particularly for use with pots having sloping sides, by setting the riser into the base at slight slant, as illustrated.
- a device for circulating a constant flow stream of hot water in an open top water containing vessel comprising an eccentrically upwardly tapering hollow base having a wide open bottom by which it is adapted to rest on the bottom of a vessel and an opening formed at approximately the apex thereof, an open ended riser tube set into the said opening, a hollow body providing a chamber supported at the free end of said riser and communicating with the opening of the riser at said end, said chamber having a single outlet opening at its bottom of a lesser size than said riser opening communicating therewith, whereby an intermittent, spurting stream of hot water entering the said chamber through said riser is accumulated therein to provide a constant flow stream out of said outlet opening.
- a device for circulating a constant fiow stream of hot water in an open top water containing vessel comprising an eccentrically upformed preferably integrally therewith, the up- Wardly tapering base having its apex adjacent an edge thereof, said base having a wide open bottom by which it is adapted to rest on the bottom of a vessel and having an opening formed at approximately the apex thereof, an open ended riser tube set into the said opening, a substantially closed receptacle supported at the free end of said riser tube and communicating with its opening at said end, said receptacle having a single outlet opening in its bottom of a lesser size than said riser opening communicating therewith, whereby an intermittent, spurting stream of hot water entering the said chamber through the said riser is accumulated therein to provide a constant flow stream of hot water through the said outlet opening.
- the said receptacle has a depending tube secured to the bottom thereof surrounding said riser receiving opening and adapted to fit over and engage the said riser, said tube having openings formed therein and wherein the said receptacle has apertures formed in the portion of its bottom encompassed by the said depending tube and tubes set into the said apertures and extending into the interior of the receptacle and adapted to serve as outlets for excess accumulated water and for steam.
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- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cookers (AREA)
Description
M. PARNES ET AL Nov. 13, 1951- HOT WATER CIRCULATOR Filed Feb. 4, 1948 JNVEN TOR. Morr/lr Parnes BY Abra/7am Gruber ATTDRN Patented Nov. 13, 1951 HOT WATER omoULA'roR Morris Parnesand'gAbraham Gruber, New York, N. Y., assignors. to Elliott M. FeinbergyNew York, N.
Application February 4, 1948, Serial No. 6,204
10 l ims.) (cineass).
The present invention relates to a, portable hot water circulating device.
It is an object of the present invention to pro videa device of; the character described whichwill convert a mass; of boiling waterincareceptacle into a circulating, constant-flow stream of hot water.
It is also an object. of" the present invention to provide a device of; thewcharacter described which willpermit the, utilization of the, constantfiow stream of hot water for'practical application.
It is another object of the present invention to provide a device or the character described which may be utilized: with practically any type and substantially any size, of open ended container or receptacle capable'oi holding water and withstanding the heat necessary to bring water to a boil, whereby the production of a constant flow stream of hot water is made possible wherever a pot and heater are available.
It is still another object ofthe present invention to provide a device of the character described which is economical in theuse of water and heat by repeatedly utilizing thesame mass of water with a minimum of loss and waste and with the consequent need for only infrequent replenishment by the addition of cold. water.
It is a further object of the present inventionto provide a device of the character described which is quiet and substantially noiseless in operation. and which is otherwise handy, desirable and. convenient to use.
It is a still further object of the present invention to provide a device of the character described which is compact; which is economical to produce and which is simple, easy and economical to operate.
The device of the present invention is of particular advantage for use in the art of mechanical dentistry and in other arts, wherein wax molds are utilized, or wax mold linings for producing castings of plastic materials or gold or other precious metals. The most convenient method for accomplishing the melting away of the wax from the casting or from the plaster mold has been found to be the applicationand use of hot water; a method very extensively used in the art.
Hot water for the above purpose ha been generally obtained from a. pot. or-like container set over a stove orsimilar heating device. The mold and castings were held over thepot and the hot Water applied with a ladle or the like.
The foregoing method'ior applying hot water to the wax mold, besides being clumsy, laborious and time-consuming, had the additional dis,- advantage of being difficult to effect complete and clean melting away of the Wax from the mold or casting, without frequent changes of the water, which involved additional waste of time and fueluntil it was heated to the proper temperature. Thereason'iorsuch need is the fact that,
after, limited use, the water became coated withmo-lten wax which floated on its surface and such moltenwaxwas pickedv up by the ladlewith-the-water and Would-readhere on the mold or casting when thewater was poured thereon.
The present invention provides a device-whichwill eliminate-allot the foregoing disadvantages;
by converting the same water in the same pot as heretofore used into, a constantly flowing, circulating, clean stream of hot water, always utilizing the clean, bottom water of the pot-v for circulation-and disposing the stream of water in a position to permit the holding of the work thereunder, forclean, rapid, complete and convenient dissoving of the wax.
The foregoing andiotheradvantages and superiorities 0f. the device of the-present invention will. become more readily apparent to those skilled in the-art from thepreferredv embodiment there of shown in the accompanying drawings and from the description thereof following. to be understood, however,-that such embodiment is. shown by way of illustration only, to make the principles and practice of the invention more readilycomprehensible, and without any intent of v limiting the invention to the specific details therein shown.
In the drawings:
Fig. 1 is'a-perspective view of one preferred,
sameand throughahot water container in which it is. disposed over a heater.
Refer-ringmore specifically to the accompanying drawings, a pot or similar open endedcontainer It, suitable for having the water I I heated therein, as by a heating device over which it, is
arranged, such as the burner: I2, is more or less, diagrammatically illustrated. The pot It! may, preferably, be straight walled or may have its wallslightly outwardly tapering, as illustrated, to provide ample surface areav for working there,-
over.
Set up within thepot II], is the hot water circulating device of the present invention, generally. designated as I3. Thedevice 13 comprises aninverted, opened bottom, hollow base portion H, which may be of conical, dome or similar shape and of a size adapted to cover a substantially large area of the bottom of the pot In. The base I4 is provided at or adjacent its bottom edge with a plurality of apertures I5, for the circulation of the water H therethrough.
The base I4 is also provided at approximately its highest point with an opening l6, into which is set a riser tube ll, of a height to extend a sub,
stantial distance above the edges of the pot ID.
The upper end of the riser supports a water chamber or reservoir l8, consisting of a lower, preferably oval shaped receptacle portion I 9, and a correspondingly shaped cover portion 20, which fits tightly and securely within or over the receptacle I9. The cover may, if desired, be further securely attached in place as by means of screws passing through the cover 20 and engaging in the edges of the receptacle portion l9,
in a manner readily understood and not thought necessary to be specifically illustrated.
One end of the receptacle portion l9, may be of reduced depth and have a level floor portion 2|, in which may be formed the opening 22 adapted to fit over the riser II. The opening 22, may be formed with an inwardly extending sleeve 23, which may be provided with the internally formed threads 24, by which it may be supported and engaged on the corresponding threads formed on the end of the riser l1, forming a steady, secure and substantially liquid proof connection therewith. It will be apparent that other suitable means for supporting and securing the chamber 19 on the riser l1, may be utilized.
The opposed end of the receptacle portion l9 may be formed with a depending nozzle 25, having the outlet opening 26 formed therein. Such opening 26 is formed to be of lesser size, as onehalf or one-third of the size of the inlet opening formed by the end of the riser IT, entering the chamber l8.
Set into the floor portion 2|, in suitable openings provided therein for the purpose, are a steam escape tube 21, extending preferably above the end of the riser IT and a water overflow tube 28, extending preferably to a point below the end of the riser II.
In operation, the boiling water in the pot H), which is encompassed within the base l4, rises by the steam pressure generated through the opening 16 into the riser l1. and thence into the water chamber I8. In the chamber I8, the mixture of water and steam separates; the water falling to the bottom and the steam escaping through the tube 21. As the outlet opening from the Water chamber 26 is of lesser size than the inlet through the riser, the water I I accumulates on the bottom of the chamber l9, and is discharged therefrom, through the opening 26 in a constant flowing stream; thus converting the intermittent, pulsating spurts of water coming in through the riser l1, into a constantly flowing stream capable of performing continuous, wax melting work. Any excess water that may come into the chamber [9, will be discharged through the tube 28, thereby establishing a fixed water level within the chamber l9.
In order to conserve the hot water as well as to render the operation of the device silent, by dampening out the noise made by the spurting steam and water mixture, the chamber may have 8. depending, downwardly tapering sleeve 30 per end of such sleeve encompassing the opening 22, and the openings for the tubes, 21 and 28, and the lower end thereof tapering to fit snugly around the riser H. The sleeve 30 may have a plurality of apertures, such as 3|, formed therein adjacent its lower end.
By this construction, the sleeve 30, not only serves to steady the chamber l8, on the riser II, but also to condense any steam escaping through the tube 21, and to return such condensed steam as well as the overflow water from the tube 28, back into the pot l0, and serves as well to deaden and silence the noise otherwise incident to the operation of the device.
In order. to provide maximum working area over the pot ID, the base 14, and riser l1, may be so formed and arranged that the riser l1, emerges from the pot l0, up against or close to the wall thereof, so thatthe nozzle 25 is disposed adjacent the center of the pot opening. For that purpose the riser I! may be sloped or bent along its lower portion, or preferably, as illustrated, the base I4 may be so shaped that it has its apex at one end thereof wherein the opening I5 is formed, so that by merely disposing the device along a side of the pot, the riser will emerge therefrom in suitable position. Additional advantage may be attained, particularly for use with pots having sloping sides, by setting the riser into the base at slight slant, as illustrated.
This completes the description of one embodiment of the device of the present invention. It will be readily apparent that many modification-s and variations thereof may be made by any one skilled in the art, in accordance with the principles of the invention hereinabove set forth and without the use of any inventive ingenuity. We desire, therefore, to be protected for any and all such variations and modifications that may be made within the spirit of the present invention and scope of the claims hereto appended.
What we claim is:
1. A device for circulating a constant flow stream of hot water in an open top water containing vessel comprising an eccentrically upwardly tapering hollow base having a wide open bottom by which it is adapted to rest on the bottom of a vessel and an opening formed at approximately the apex thereof, an open ended riser tube set into the said opening, a hollow body providing a chamber supported at the free end of said riser and communicating with the opening of the riser at said end, said chamber having a single outlet opening at its bottom of a lesser size than said riser opening communicating therewith, whereby an intermittent, spurting stream of hot water entering the said chamber through said riser is accumulated therein to provide a constant flow stream out of said outlet opening.
2. The device of claim 1, wherein said chamber is substantially closed and is provided with outlet means for excess accumulated water to thereby maintain a substantially constant water level therein.
3. The device of claim 1, wherein the said chamber is substantially closed, said hollow body comprising a bottom portion and a tightly fitting cover portion and wherein said bottom portion is provided with outlet means for excess accumulated water and for steam.
4. A device for circulating a constant fiow stream of hot water in an open top water containing vessel comprising an eccentrically upformed preferably integrally therewith, the up- Wardly tapering base having its apex adjacent an edge thereof, said base having a wide open bottom by which it is adapted to rest on the bottom of a vessel and having an opening formed at approximately the apex thereof, an open ended riser tube set into the said opening, a substantially closed receptacle supported at the free end of said riser tube and communicating with its opening at said end, said receptacle having a single outlet opening in its bottom of a lesser size than said riser opening communicating therewith, whereby an intermittent, spurting stream of hot water entering the said chamber through the said riser is accumulated therein to provide a constant flow stream of hot water through the said outlet opening.
5. The device of claim 4, wherein the said receptacle is of elongated shape and is supported at one end along its longer axis and is provided with its outlet opening at its other end.
6. The device of claim 4, wherein the said receptacle is formed with an arcuate top to thereby distribute the stream of water entering thereinto.
7. The device of claim 4, wherein the said receptacle is provided with apertures in the bottom thereof and with tubes set into the said apertures and extending into the said chamber, said tubes being of difierent heights with the lowermost adapted to serve as an overflow for excess accumulated water and the higher adapted to serve as a steam outlet.
8. The device of claim 4, wherein the said receptacle is of ovoid shape and said riser receiving opening is formed at one end thereof and said outlet opening is formed at the other end thereof.
9. The device of claim 4, wherein the said receptacle has apertures formed in the bottom thereof and open ended tubes are set into said chamber and are adapted to serve as outlet means for excess accumulated water and for steam.
10. The device of claim 4, wherein the said receptacle has a depending tube secured to the bottom thereof surrounding said riser receiving opening and adapted to fit over and engage the said riser, said tube having openings formed therein and wherein the said receptacle has apertures formed in the portion of its bottom encompassed by the said depending tube and tubes set into the said apertures and extending into the interior of the receptacle and adapted to serve as outlets for excess accumulated water and for steam.
MORRIS PARNES. ABRAHAM GRUBER.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 867,598 Rahm Oct. 8, 1907 1,362,862 Gumula Dec. 21, 1920 FOREIGN PATENTS Number Country Date 4,192 Great Britain of 1888 6,318 Great Britain of 1889 22,805 Great Britain of 1893 447,031 France Oct. 17, 1912 527,995 France Aug. 5, 1921 459,060 Germany Apr. 26, 1928 727,808 France Apr. 4, 1932 52,152 Norway Feb. 13, 1933
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6204A US2574587A (en) | 1948-02-04 | 1948-02-04 | Hot water circulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6204A US2574587A (en) | 1948-02-04 | 1948-02-04 | Hot water circulator |
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US2574587A true US2574587A (en) | 1951-11-13 |
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US6204A Expired - Lifetime US2574587A (en) | 1948-02-04 | 1948-02-04 | Hot water circulator |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3133507A (en) * | 1959-10-06 | 1964-05-19 | Philips Corp | Bubble-up pump |
US3164174A (en) * | 1960-04-29 | 1965-01-05 | Berthod Louis | Thermal excess-pressure device |
US3213684A (en) * | 1962-11-27 | 1965-10-26 | Swiss Colony Inc | Calorimeter |
US3676307A (en) * | 1969-05-08 | 1972-07-11 | Detrex Chem Ind | Percolator distillation system |
US3890987A (en) * | 1973-06-04 | 1975-06-24 | Whirlpool Co | Washing apparatus with auxiliary distributor |
US4103603A (en) * | 1974-07-19 | 1978-08-01 | Melitta, Inc. | Automatic coffee brewing device |
US20040020369A1 (en) * | 2002-08-05 | 2004-02-05 | The Coleman Company, Inc. | Camping coffee maker |
US20050199130A1 (en) * | 2004-02-23 | 2005-09-15 | Pragotrade Usa, Incorporated | Portable coffee maker |
US20090013879A1 (en) * | 2006-02-03 | 2009-01-15 | Seb S.A. | Cooking accessory for a steam cooking device |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB189322805A (en) * | 1893-11-28 | 1894-09-29 | William Phillips Thompson | Improved Method of and Apparatus for Preventing Milk or other Liquids Overflowing when in a State of Ebullition. |
US867598A (en) * | 1906-04-28 | 1907-10-08 | Charles Reymershoffer | Domestic boiler. |
FR447031A (en) * | 1912-07-13 | 1912-12-20 | Edgard Auguste Theodore Senech | Apparatus applicable to all receptacles for boiling milk and all other liquids, with a view to preventing these liquids from overflowing the receptacles |
US1362862A (en) * | 1920-12-21 | Food-boiler | ||
FR527995A (en) * | 1920-12-08 | 1921-11-04 | Antoine Courzereaux | Mushroom washer |
DE459060C (en) * | 1926-11-13 | 1928-04-26 | Fritsch & Co | Device to prevent milk from frothing when cooking |
DE727808C (en) * | 1937-04-23 | 1942-11-12 | Kupferwerk Ilsenburg Akt Ges | Use of alloys consisting of 0.5 to 1.5% silicon, 0.5 to 1.5% iron, 0.05 to 0.2% aluminum, the remainder copper, in a non-precipitation hardened state for fire boxes in locomotives |
-
1948
- 1948-02-04 US US6204A patent/US2574587A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1362862A (en) * | 1920-12-21 | Food-boiler | ||
GB189322805A (en) * | 1893-11-28 | 1894-09-29 | William Phillips Thompson | Improved Method of and Apparatus for Preventing Milk or other Liquids Overflowing when in a State of Ebullition. |
US867598A (en) * | 1906-04-28 | 1907-10-08 | Charles Reymershoffer | Domestic boiler. |
FR447031A (en) * | 1912-07-13 | 1912-12-20 | Edgard Auguste Theodore Senech | Apparatus applicable to all receptacles for boiling milk and all other liquids, with a view to preventing these liquids from overflowing the receptacles |
FR527995A (en) * | 1920-12-08 | 1921-11-04 | Antoine Courzereaux | Mushroom washer |
DE459060C (en) * | 1926-11-13 | 1928-04-26 | Fritsch & Co | Device to prevent milk from frothing when cooking |
DE727808C (en) * | 1937-04-23 | 1942-11-12 | Kupferwerk Ilsenburg Akt Ges | Use of alloys consisting of 0.5 to 1.5% silicon, 0.5 to 1.5% iron, 0.05 to 0.2% aluminum, the remainder copper, in a non-precipitation hardened state for fire boxes in locomotives |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3133507A (en) * | 1959-10-06 | 1964-05-19 | Philips Corp | Bubble-up pump |
US3164174A (en) * | 1960-04-29 | 1965-01-05 | Berthod Louis | Thermal excess-pressure device |
US3213684A (en) * | 1962-11-27 | 1965-10-26 | Swiss Colony Inc | Calorimeter |
US3676307A (en) * | 1969-05-08 | 1972-07-11 | Detrex Chem Ind | Percolator distillation system |
US3890987A (en) * | 1973-06-04 | 1975-06-24 | Whirlpool Co | Washing apparatus with auxiliary distributor |
US4103603A (en) * | 1974-07-19 | 1978-08-01 | Melitta, Inc. | Automatic coffee brewing device |
US20040020369A1 (en) * | 2002-08-05 | 2004-02-05 | The Coleman Company, Inc. | Camping coffee maker |
US6739241B2 (en) | 2002-08-05 | 2004-05-25 | The Coleman Company, Inc. | Camping coffee maker |
US20050199130A1 (en) * | 2004-02-23 | 2005-09-15 | Pragotrade Usa, Incorporated | Portable coffee maker |
US20090013879A1 (en) * | 2006-02-03 | 2009-01-15 | Seb S.A. | Cooking accessory for a steam cooking device |
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