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Publication numberUS3905518 A
Publication typeGrant
Publication dateSep 16, 1975
Filing dateJun 19, 1974
Priority dateJun 19, 1974
Publication numberUS 3905518 A, US 3905518A, US-A-3905518, US3905518 A, US3905518A
InventorsRichard C Dreibelbis, Arthur C Homeyer, Warren E Turner
Original AssigneeEmerson Electric Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Remote dispensing head with a concealed expansion chamber for heated fluid dispensing systems
US 3905518 A
Abstract
A remote dispensing head for use in a Fluid Heating and Dispensing System operating generally at atmospheric pressure includes, a control valve section, an expansion chamber section including an expansion chamber concealed adjacent the point of attachment for said remote dispensing head, and a removably connectible dispensing spout for discharging fluid from the system. In the lower section of the remote dispensing head a connecting passage with an aspirator therein connects the expansion chamber to the conduit for delivering incoming fluid to the fluid heating and storage tank for the system to permit collected fluid to be aspirated from the expansion chamber with incoming fluid delivered to the heating and storage tank. A shut-off float actuated by the level of collected fluid in the expansion chamber terminates aspiration when the collected fluid has been withdrawn from the expansion chamber and thus prevents aspiration of cold air with the incoming fluid being delivered to the heating and storage tank. In the upper section of the remote dispensing head a combined discharge and vent for the system connects the expansion chamber with the dispensing spout to permit discharge of expansion or overflow water in excess of the capacity of the expansion chamber. A manual actuator for operating the control valve is shaped to permit the discharge spout to be angularly positioned at the point of attachment through an arcuate range of at least 270 DEG .
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United States Patent 1191 Dreibelbis et al.

14 1 Sept. 16, 1975 REMOTE DISPENSING HEAD WITH A CONCEALED EXPANSION CHAMBER FOR HEATED FLUID DISPENSING SYSTEMS [75] Inventors: Richard C. Dreibelbis, Fair Lawn;

Arthur C. Homeyer, Essex Fells; Warren E. Turner, Succasunna, all of NJ.

[73] Assignee: Emerson Electric Co., St. Louis, Mo.

[22] Filed: June 19, 1974 1211 Appl. No.: 480,675

Primary ExaminerRobert B. Reeves Assistanl ExaminerCharles A. Marmor Attorney, Agent, or FirmDaniel H. Bobis [57] ABSTRACT A remote dispensing head for use in a Fluid Heating and Dispensing System operating generally at atmospheric pressure includes, a control valve section, an expansion chamber section including an expansion chamber concealed adjacent the point of attachment for said remote dispensing head, and a removably connectible dispensing spout for discharging fluid from the system. In the lower section of the remote dispensing head a connecting passage with an aspirator therein connects the expansion chamber to the conduit for delivering incoming fluid to the fluid heating and storage tank for the system to permit collected fluid to be aspirated from the expansion chamber with incoming fluid delivered to the heating and storage tank. A shut-off float actuated by the level of collected fluid in the expansion chamber terminates aspi' ration when the collected fluid has been withdrawn from the expansion chamber and thus prevents aspiration of cold air with the incoming fluid being delivered to the heating and storage tank. In the upper section of the remote dispensing head a combined discharge and vent for the system connects the expansion chamher with the dispensing spout to permit discharge of expansion or overflow water in excess of the capacity of the expansion chamber. A manual actuator for operating the control valve is shaped to permit the discharge spout to be angularly positioned at the point of attachment through an arcuate range of at least 270.

8 Claims, 8 Drawing Figures REMOTE DISPENSING HEAD WITH A CONCEALED EXPANSION CHAMBER FOR HEATED FLUID DISPENSING SYSTEMS BACKGROUND OF THE INVENTION The invention relates generally to systems for dis" pensing' heated fluid operating at atmospheric pressure and more particularly to a dispensing means having a concealed expansion chamber disposed remote from the heating and storage tank for the fluid tobe dispensed from the system.

There are systems for dispensing heated fluid at atmospheric pressure wherein the dispensing means is remote from the storage and heating tank for the fluid to be dispensed from the system as is shown in U.S. Pat. Nos. 3,202,321., 3,381,110 and in applicants copending application U.S. Ser. No. 352,972 filed Apr. 20, 1973 now U.S. Pat. No. 3,836,050 a remote dispensing head with an expansion chamber having a level operated float cut off is disclosed.

Dispensing heads remote from the storage and heating tank for a heated fluid dispensing system which in elude an expansion chamber and mechanical means, such as valve means for controlling the flow of inlet water to the heating and storage tank, are large and complex fixtures. Systems with such remote dispensing heads also require extra piping to provide the desired fluid flow paths from the inlet source, to the remote dispensing head, thence to the heating and storage tank and finally back to the remote dispensing head where the fluid is dispensed through the dispensing spout mounted therein.

Since such remote dispensing heads are relatively large and complex fixtures, and are the only visible portion of the system, it is desirable to give them pleasant appearance or finish customary to the existing finishes utilized on other water dispensing fixtures such as faucets and the like devices.

Further, in remote dispensing heads which include an expansion chamber as is shown in U.S. Pat. No. 3,202,321, additional problems have developed because of the aspiration of air into the system through the expansion chamber. In applicants abovementioned co-pending application, Ser. No. 352,972 filed Apr. 20, 1973 now U.S. Pat. No. 3,836,050 these problems are discussed and one means is shown and claimed for overcoming the turbulence and other adverse ecological factors which such aspirationproduces in the dispensing of heated fluid from such heating and dispensing systems.

In the present invention, another form of improved remote dispensing head is disclosed which overcomes these same problems of the prior art, in which the expansion chamber in the remote dispensing head is concealed below the point where the remote dispensing head is attached so that only a small portion or part of the remote dispensing head will be visible, namely, the spout and the actuating means for operatingthe valve means which controls flow of the incoming fluid delivered to the system.

The actuating means may be operatively associated with the remote dispensing head or may be spaced therefrom depending on whether means for controlling the flow of'incoming fluid is mechanically or electrically operated.

In the expansion chamber section, a float means in the expansion chamber acts to close the end of a passage means at the-lowermost section of the remote dispensinghead in communication with the expansion chamber aftervthe dispensing system has aspirated collected expansion fluid from the expansion chamber. This prevents aspiration of air into-the fluid being delivered to the associated heating and dispensing systems in which the remote dispensing head is used.

Aspiration of cold air into the fluid flow path in the heating and dispensing system has caused thermal pollution in the prior art devices. In the present device this is prevented by the shut-off action of the float means as soon as collected expansion fluid has been drained from the expansion chamber.

Additionally, the closing off of the aspirating passage in operative association with the system is desirable to prevent induction of air into the heating and storage tank because this will prevent formation of an objectionable air pocket at the top of the heating and storage tank that would cause delay in starting flow from the dispensing spout in the remote dispensing head when the system is actuated for operation.

SUMMARY oF THE INVENTION valve means in said passage means to control the flow of said incoming fluid to the'system, aconnecting passage in said expansionchamber section having aspirating means and connected to communicate between the lowermost portion of the expansion chamber and the passage means for delivering incoming fluid to'the system so that expansion or overflow fluid will pass'to said expansion chamber when the's ystem is not operated and will be aspirated therefrom when the incoming fluid is passed to the system, a discharge spout in the remote dispensing head for discharging heated fluid from the system, a combined overflow and vent means at the uppermost portion of the expansion chamber section connected to the discharge spout, and means operable bythe level of collected fluid in the expansion chamber to shut off the connecting passage when collected fluid is substantially drained from said expansion chamber. 1 I I l Additionally, the remote dispensinghead above described including, a dispensing spout detaehably connectible to the dispensing head and angularly adjustable relative thereto, means for operating the valve means; said valve operating means mounted on the dispensing head and disposed to permit angular adjustment of the dispensing spout in at least a, range of 270.

Other objects of the invention not particularly delin eated will become clearto those skilled in the art from the accompanying description -made in conjunction with the annexed drawings in which, 1

FIG. 1 is a side elevational view of a dispensing system forheated fluid 'with a remote dispensing head in accordance with the present inventionmounted. in a sink cabinet showing a 'fragment of the heatingand storage tank for the systems l FIG. 2 is a 'front elevational viewof the remote dispensing head shown in FIG. 1 showing the dispensing spout, the control valve section, connecting means and the expansion chamber section. I

FIG. 3is atop plan view ofthe remotedispensing head shownin FIG. 2. Y a i FIG. 4 is a verticalsection taken on line 44 of FIG.

FIG. 5 is avertical section taken on line 5-5 of FIG.

. FIG. 6 is a cross-section taken on line 6-6 of FIG.

FIG. 7 is a cross-section taken on line 7 -7 of FIG.

FIG. .8 is .a cross+section taken on line 88 of FIG.

The elongated threadedproject ion 12 on the control valve section. has a stop nut 15 to adjust the length of the elongated threaded section that will extend abgyethe surface of the counter C and a washer 16 and lock nut '17 will holdthe remote dispensing head 10 in its..,adj usted position A cover 18 provided to cover the end of the threaded section of the remote dis pensinghead 10 extending above the surface of the counter C c over 18 will have a conventional finish such as stainlesss'teehchrome or the like applicable to fixtures w ey... H

Remote dispensinghead 10 is associated with a hot water heating and dispensing system which includes a jacketed water storage and heating unit generally designated ZO Conduit'fmeansas hereinafter described conneets these'elementsto each other and to a source of pressuriied' water from the water mains (not shown) of the eoventional water supply systems available.

I The jacketed storage and heating unit 20 is supportably mounted on brackets 21a and 21b 'within the sink enclosure in spacedfrelation to and therefore remote from the associated dispensing heat 10 for the hot water heating and dispensing system.

In the jacketed storage and heater assembly 20 is a storage and heatingtank 22 having a heating element 24 which'is automatically operated to maintain water I justing'the switch setting to maintain a predetermined water temperature within the heating and sto'ragetank 22; The electricalconnections to the heating element 24 and thermostat assembly 23 are shown in FIG. 1 of the drawings and the entire means for heating the sys- Referring to .thedrawings, FIG. 1 shows anenclosure 41 tern will not more fully describedbecause the same is wellknown in the as indicated by US. Pat. Nos. 3,202,321 and 2,903,551.

FIGS. 1 and 2 show that an inlet conduit 30 communicates at one end with a source of water to be heated and dispensed and at the other end communicates with and is connected to the inlet means 31 in the control valve section 1.1 of the dispensing head 10.

Control valve section 1 1 includes valve means generally designated 32 having a valve head 33 which normally maintains the inlet means 31 closed by means of a valve spring 34. The valve head is connected through a valve stem 35 which extends through a sealed opening 36 .in the endof the threaded projection 12 on the control valve section 11 and an opening 37 in the finished cover piece 18 to an elongated manually operated actuating lever 38 operatively connected to a cam assembly 39 on'the end of the valve stem 35 and pivoted as at 39a against the outerface of the finished cover piece 18. When the'lever 38 is depressed manually, it will raise the normally closed valve head 33 to open the inlet means 31 so that water from the source can flow freely into a valve chamber 40 and thus will also cause the valve spring 34 to be compressed. On release of the actuating lever 38 from the depressed position, the compressed spring 34 will expand to return the valve head 33 to the normally closed position on the inlet means 31. This will cut off the flow of fluid from the source to valve chamber 40.

Valve chamber 40 communicates by cross passage 41 in the control valve section with one end of a longitudinal passage 42 in the expansion chamber section of the remote dispensing head 10. The longitudinal passage 42 at the end remote from the cross passage 41 is connected to inlet conduit 43 which is connected to the bottom of the storage and heating tank 22.

The storage and heating tank 22 has a discharge conduit 44 connected to the uppermost portion thereof and the discharge conduit 44 in turn is connected at the end remote from the storage and heating tank 22 to a dischargepassage 45in the control valve section 11 of the remote dispensingheacl 1 0. Discharge passage 45 communicates with a longitudinally extending bore 46 in the threaded projection 12. Bore 46 has a tapered opening 47 in the end of the threaded-projection 12 extending above the counter C, into which a discharge spout'50 having a dispensing passage 51 therethrough is mounted by means of a tapered portion 52 which mates or fits the tapered opening 47. An aligned opening 53 in the finished cover piece 18 pennits assembly i of the discharge spout into the tapered opening 47.

The elongated manual actuating lever 38 is shown as so mounted that the end adjacent the discharge spout is contoured asat 54a to fit about the discharge spout .It will be understood that the actuating means for the valve means 32 may be an electrically operated solenoid means (not shown) without departing from the scope of the present invention.

OPERATION When the actuating lever 38 is depressed the fluid to be heated will pass from the source thereof through inlet 31, valve chamber 40, cross-passage 41, longitudinal passage 42 and inlet conduit 43 to the bottom of the storage and heating tank, 22. Due to the difi'erence in pressure in the conventional water system which is higher than the atmospheric pressure at which the pres ent disclosed heating and dispensing system operates the incoming fluid passing to the bottom of the storage and heating tank 22 will displace heated fluid from the upper portion or top of the storage and heating tank 22 through the discharge conduit 44 connected to the upper portion or top thereof. The discharge conduit 44 will pass the heated fluid to the discharge passage 45 for discharge from the system through the dispensing passageway 51 in the discharge or dispensing spout 50.

Heating fluid will continue to be displaced and to be discharged as long as the actuating lever '38 is held in the depressed position, the heating element 23 being sized to handle the continuous volumetric flow of the system under such conditions of operation.

When the actuating lever 38 is released and the valve head 33 connected thereto moves to its normally closed position, as above described, displacement and discharge of the heated fluid will terminate.

The present disclosure differs from that shown in U.S. Pat. No. 3,202,321 and in said U.S. Pat. No. 3,836,050 in that it provides an improved remote dispensing head having only a relatively small portion, namely the outer end of the threaded projection 12, disclosed above the counter C. This materially reduces the portionof the dispensing head which must have an acceptable and attractive appearance and since the quantity of stainless steel or chromium plating used for this purpose is reduced from that utilized in prior art devices for the same purpose there is a substantial reduction in the cost of manufacturing a remote dispensing head in accordance with the present invention.

Further, however,'the remote dispensing head in accordance with the present invention simplifies the associated heating and dispensing system because it permits the expansion chamber to act as the vent means for the entire system and the improved shut-off means associated with the expansion chamber for the system prevents aspiration of air which produces the undersirable conditions of operation first described above concerning the aspiration of cold air into the systern.

EXPANSION CHAMBER SECTION OF REMOTE DISPENSING HEAD Thus, referring to FIGS. 4 to 8 the expansion chamber section 13 in remote dispensing head 10 is shown disposed on the side of the control valve section remote from the threaded projection 12 and accordingly when the dispensing head 10 is in assembled position, the exparision chamber section 13 will be concealed below the surface of the counter C.

The expansion section 13 includes an expansion chamber 55 which will be sized volumetrically as the system requires to receive either expansion water from the storage and heating tank or overflow water at times when the discharging of fluid is terminated under conditions whichproduce such overflow.

Expansion chamber section 13 further includes a connecting passage 56 at the lower end thereof which connects at one end with the expansion chamber 55 by means of a port 57. At the end'remote therefrom the connecting passage 56 communicates with the longitudinal passage 42 for delivering incoming fluid to the inlet conduit 43 connected to the bottom of the storage and heating tank 22. 0

At the point where the'connecting passage 56 meets the longitudinal passage 42 an aspirating means 58 is provided which has a small or restricted opening as at 59. Therefore flow to and from the expansion chamber 55 will pass through the aspirating means 58, orifice 59 and connecting passage 56. When inlet port 31 is closed and no water is being dispensed by the system expansion or overflow water from the storage and heating tank 22 will pass up:inlet conduit 43 through aspirating means 58, orifice.59, connecting passage 56 and port 57 into the expansion chamber 55 where it will collect. Overflow water will collect where reverse displacement is caused by. the water in discharge line 44 returning to the storage and heating tank 22 by gravity flow. a

At the upper end of the'expansion chamber 55, a combined overflow and vent passage 60 provides means for connecting a combined overflow and vent line 61 formed and lying .within the discharge passage 51 of the discharge spout 50. Since the entire system communicates with the expansion chamber 55 either through inlet conduit 43 or with the discharge passage 51 throughdischarge conduit 44 the system will be in communication with this venting means and therefore will only be operating againstatmospheric pressure.

At the point where'the port 57 opens into the expansion chamber 55 the bottom wall 6510f the expansion chamber 55 is sloped so that collected fluid will drain freely and completely from the expansion chamber 55.

Such collected fluid will be aspirated from the expansion chamber 55 bythe aspirating means 58 when incoming water flows through longitudinal passage 42, aspirating means 58 and inlet conduit 43 to the bottom of the storage and heating tank 22. I

However, because of the undesirableeffect of aspirating air into the systemas above described, means are providedto shut-off or close the port 57 when the collected fluidhas'drained'from the expansion chamber Thus, FIGS. 4 and 8 show that the port 57 is provided with a seat 66 so that a freely disposed float member 67 can seat therein when the collected fluid has beenv aspirated from the expansion chamber 55.

The float member maybe a ball shaped element as shown which may be hollow or solid and will be made of any suitableinert material which has'a specific grav ity less than that of water or other fluid that maybe collected in the expansion chamber 55. When fluid expands or is collected in the expansion chamber 55 the float member 67 will'float atthe surface of the fluid as shown in phantomized lines and when the collected fluid is aspirated from the expansion chamber 55 the float member 67 will engage the port seat 66 to close the port 57-and thus preventaspiration of air into the system with the flow of incoming water.

The construction thus described shows a simpler form of system than that heretofore known in that only two connecting conduits namely the inlet conduit 43 and discharge conduit 44 are required to bring the storage and heating tank 22 and "the dispensing head 10 into operative connection with each other. Further, however, when "the system is not inoperation these two conduits and the storage and heating tank act like a U- tube so that asubstan'tial volume is provided for expansion or overflow water or. other fluid before any excessive collection of such water or other fluid will be discharged through thevent line 6] in the discharge passage 51 in the discharge spout 50. i 1

It will be understood that the. invention is not to be limited to the specific construction or arrangement of parts shown'but-that they may be widely modified withinthe invention defined by the claims.

What is claimed is:

l. A dispensing head for an associated dispensing system for heated fluid disposed at a point of attachment remote from the associated dispensing system including, 1 I Y z I a. means forming a control valve section and an ex- .5 :pansion chamber section disposed therein for operative association, v

b. connecting means for attaching the dispensing head so that only a small part of the upper portion of the control valvesection is visible .above the point -of' attachment and the remaining part of theand :a discharge spout operatively associated withv the-discharge passage for discharging heated fluid delivered to the dispensing head, *dapassage means in-said expansion chamber section connected at one-end to the outlet in said control "rdelivering incoming fluid to be heated to the associated dispensing system when the. valve. means is 'actuated to open the inlet,

. said expansion chamber section forming an expansion chamber having apredetermined volume for collectingfluid therein and a connecting passage with aspirating means therein connected between the :lowermostv part of the expansion chamber and atthe end'remote. therefrom with the passage :means for delivering incoming fluid whereby aspiration of collected fluid from the expansion chamber will occur when incoming fluidto be heated is l I delivered to the associated dispensing system,

f. a combined overflow and vent means at the upper .endof said expansion chamber section connected atone end to the expansion chamber and at the end remote therefrom to the discharge spout, and

g.-means operated by -the levelof the collected fluid in the expansion chamber toclose-the connecting 1 passage when substantially all of the collected fluid is aspirated from the expansion chamber. 2. In a remote dispensing head as claimed in claim 1 wherein. p

a. said discharge passage has one end opening thereof located intheconnecting means at the upper portionaof the control valve section visible above the point of attachment,

i "b, the'said one end opening of the discharge passage 'is tapered,andv I ca the discharge spout having oneend tapered to permit-the discharge spout to be detachably connected in said tapered end opening of the discharge pas- .sageand to be angularly positioned therein relative the point. of, attachment at least in a range of 270.

valve section and atthe opposite end disposed for.

. 3, In a remotcdispensing head claimed in claim 2 wherein, r i

a. said valve means includes means for manually operating the valve means,

b. said manual operating means is pivotably connected to the visible portion of the control valve section above the point of attachment, and means connecting the manual operating means to the valve means,

c. said manual operating means contoured at one end to fit about the discharge spout to permit angular positioning of the discharge spout.

4. In a remote dispensing head as claimed in claim 2 including,

A. a combined overflow and vent line formed in the discharge spout, and

b. said combined overflow and vent means for the system connected to the combined overflow and vent line in the discharge spout. I

5. in a system for dispensing heating fluid at a point of .use remote therefrom,

a. a storage and heating tank in said system for fluid to be heated,

b. a dispensing head having, a control valve section,

and an expansion chamber section, I

c. said dispensing head havinga, connecting means thereon for attaching the dispensing head adjacent said remote point of use,

(1. said connecting means for attaching the dispensing head so disposed thereonthat only a small part of the upper portion ofthe control valve section is visible above the point of attachmentand the remaining part .of the dispensing head including, the expansion chamber section is concealed below the point of attachment,

. said control valve section having, an inlet connected to the fluid to be heated, an outlet for said fluid, valve means normally maintaining the inlet closed for controlling flow of I incoming fluid through the dispensing head, a discharged passage for heated fluid, and a discharge spout operatively associated with the discharge passage for discharging heated fluid delivered to the dispensing head,

f. passage means in said expansion chamber section connected at one end to the outlet in said control valve section,

. a first conduit connected at one end to the end of the passage means remote from the end connected to the outlet in said control valve sectionand said first conduit connected at the other end to the bot- I tom of the storage and heating tank for delivering incoming fluid thereto when the valve means is actuated to open the inlet in the control valve section,

b. a second conduit connected at one end to the upper end ofthe storage and heating tank and to the discharge passage in the dispensing head for delivering heated fluid to the dispensing head which is displaced by the incoming fluid to be heated,

i. said expansion chamber section forming an expansion chamber having a predetermined volume for collecting fluid therein, and a connecting passage with aspirating means therein connected between the lowermost part of the expansion chamber and at the end remote therefrom with the passage means for delivering incoming fluid whereby aspiration of collected fluid from the expansion chamher will occur when incoming fluid is delivered to the heating and storage tank for the system,

a combined overflow and vent means at the upper end of said expansion chamber section connected at one end to the expansion chamber and at the end remote therefrom to the discharge spout, and

k. means operated by the level of the collected fluid in the expansion chamber to close the connecting passage when substantially all of the collected fluid is aspirated from the expansion chamber.

6. The combination as claimed in claim wherein,

a. said discharge passage has one end opening thereof located in the connecting means at the upper portion of the control valve section visible above the point of attachment,

b. the said one end opening of the discharge passage is tapered, and

c. the discharge spout having one end tapered to permit the discharge spout to be detachably connected in said tapered end opening of the discharge passage and to be angularly positioned therein relative the point of attachment at least in a range of 270.

7. The combination as claimed in claim 6 wherein,

a. said valve means includes means for manually operating the valve means,

b. said manual operating means pivotably connected to the visible point of the control valve section above the point of attachment, and means connect ing the manual operating means to the valve means,

c. said manual operating means contoured at one end to fit about the discharge spout to permit angular positioning of the discharge spout.

8. The combination as claimed in claim 6 wherein,

a. a combined overflow and vent line formed in the discharge spout, and

b. said combined overflow and vent means for the system connected to the combined overflow and vent line in the discharge spout.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3381110 *May 28, 1965Apr 30, 1968Fischer Associates IncHot water heater
US3642176 *Apr 13, 1970Feb 15, 1972Delta T IncMeans for storing and dispensing heated liquid and system therefor
US3836050 *Apr 20, 1973Sep 17, 1974Emerson Electric CoRemote plastic dispensing head with fluid level actuated expansion chamber shut off
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4249695 *Dec 12, 1979Feb 10, 1981Emerson Electric Co. (H & H Prod. Div)Thermally actuated modulating valve, and assemblies and systems utilizing the same for providing temperature controlled heated water
US4263498 *Feb 26, 1979Apr 21, 1981Hobart CorporationExpansion chamber arrangement for water heating and dispensing device
US4513887 *Nov 16, 1983Apr 30, 1985Emerson Electric Co.Instant hot water dispenser
US4906817 *Jan 11, 1988Mar 6, 1990Forbach GmbhOverflow compensation device for a water heater using a variable volume bellows
US6196162 *Nov 9, 1999Mar 6, 2001Beta Valve Systems Ltd.Valve and water heater
US6256456Jan 7, 2000Jul 3, 2001Emerson Electric Co.Hot water dispenser with heat dissipation plates for dry-start protection
US6266485Sep 15, 1999Jul 24, 2001Emerson Electric Co.One-piece plastic tank and temperature control system for a hot water dispenser
US6516141May 4, 2000Feb 4, 2003Emerson Electric Co.Apparatus and method for protecting a heating tank assembly of a hot water dispenser
US7798053Dec 21, 2006Sep 21, 2010Bunn-O-Matic CorporationSystem for producing beverages
Classifications
U.S. Classification222/146.5, 392/458
International ClassificationF24H1/18, B67D7/80
Cooperative ClassificationF24H1/18, B67D7/80
European ClassificationF24H1/18, B67D7/80