US2466792A - Jet pumping system and apparatus - Google Patents

Jet pumping system and apparatus Download PDF

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US2466792A
US2466792A US724171A US72417147A US2466792A US 2466792 A US2466792 A US 2466792A US 724171 A US724171 A US 724171A US 72417147 A US72417147 A US 72417147A US 2466792 A US2466792 A US 2466792A
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pump
fluid
suction
casing
chamber
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US724171A
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William J Conery
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F E MYERS AND BRO CO
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F E MYERS AND BRO CO
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00Priming; Preventing vapour lock
    • F04D9/04Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
    • F04D9/06Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type

Description

3 Sheets-Sheet 1 Filed Jan. 24, 1947 3 Sheets-Sheet 2 Filed Jan. 24, 1947 3 W 4 n Q 4 4 V. n m,

55 WILLIAM J. CONERY Patented Apr. 12, 1949 William vJ. Conery, ,Dallas,

-Tex., assignor, by

mesne assignments, to TheF. E. Myers & Bro.

Comp any, Ashla'nd, Ohio, a

corporation of Ohio Application January 24, 1947, Serial No. 724,121

12 Claims. (01.103-) operates from depths much greater than is possible with conventional jet pumps.

An important object of the invention is to provide an improved jet pumping system having a pressure pump for supplying fluid under pressure to an ejection unit and separate or second pressure pump for withdrawing fluid delivered by the ejection unit, there being a constant supply of fluid to the jet or flrst pressure pump to prevent the entrainment of air and consequent loss of prime, whereby the efllciency of the pumping system is materially increased.

A particular object of the invention is to provide an improved pumping system, of the character described, whereinv a suction and air separation chamber is disposed between and in communication with the inlets of the pumps so as to maintain the jet pump submerged in fluid and prevent the introduction of air thereto, whereby the prime of the system is maintained.

Another object of the invention is to provide an improved 'jet pumping system which is adapted to operate at any discharge pressure and in wells of any depth without the necessity of employing valves or regulating means for maintaining the pressure of the ejection unit and which is of such construction that it may be readily converted to multi-stage operation for increasing the discharge pressure or pumping depth.

A further object of the invention is to provide an improved jet pumping system which is arranged so as to maintain the air supply of its pressure tank without loss in efliciency'and which is adapted to pump fluid having air or gas entrained therein without becoming air bound.

A construction designed to carry out the invention will be hereinafter described together with other features of the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings, wherein an example of the invention is shown, and wherein:

Fig. 1 is an elevational view of a pumping system, constructed in accordance with the invention,

Fig. 2 is a transverse, vertical, sectional view,

ration chamber and taken substantially on the line 22 of Fig. 5, showing the pumps, the suction and air sepathe ejection unitof the system,

Fig. 3 is a horizontal, cross-sectional view. taken on the line 3-3 of Fig. 2,

Fig. 4 is a detailed, sectional view of the foot valve,

Fig. 5 is a horizontal, cross-sectional view taken on the line 55 of Fig. 2,

Fig. 6 is a view, partly in section and partly in elevation, of a multi-stage pump unit, and

Fig. 'I is a horizontal, cross-sectional view, taken on the line 1-1 of Fig. 6.

In the drawings, pumping system which includes a pump housing or unit ii, an air-tight, communicating, pressure tank i2 and an ejection unit i3. In surface or a partition 30 made integral therewith shallow well pumping, the ejection unit i3 is connected directly to the housing ii (Fig. 2); however, the ejection unit may be disposed in spaced, communicating relation to the housing by means of well conductors or pipes i4 and i5 (Fig. 1) so as to permit suspension of said unit within a deep well (not shown) below the liquid level thereof. A discharge pipe i6 leads from the interior of the pump housing to the pressure tank I2 and a service line I! extends from said tank.

A motor i8. is supported by the pump housing. being secured thereto by suitable screws I9 and having its shaft 20 depending axially into said housing (Fig. 2). The latter is preferably formed of three cylindrical, superimposed sections which include a base or lower case 2i, an annular, spacer collar or case 22 and an upper or pump case 23..- It is pointed out that the base 2i and collar 22 are of greater diameter than the pump case 23 and that a radial flange 24 is formed adjacent the lower end of said pump case for permitting fastening of the sections together by -means of suitable bolts 25 which extend through the flange and collar and are threaded base. The bolts into said i9, connect the motor i8 to the upper end of the pump case 23. An annular discharge chamber 26 is formed at the lower outer portion of the pump case in communication with the discharge pipe i6 by a depending, circumferential skirt 2'! which is angular in cross-section and preferably made integral with said case. For closing the lower ends ofthe case and chamber, a circular plate or partition 28 engages within the lower end of said case and issecured to the skirt 2! by suitable screws 29. Above the plate 28, the skirt 2! has a circular plate or to provide the numeral I ll designates a I an impeller or pump chamber 3| internally of the annular discharge chamber 25. Communication between the chambers is established by means of the usual volute openings 32 which are most clearly shown in Fig. 3.

Anaxial opening 33 is formed in the plate 23 for establishing communication between the impeller chamber 2| and the interior of the collar 22 which has its lower end closed by a transverse partition 34 to provide a suction and air separation chamber 35. The chamber 3| has an impeller or pressure pump 35 mounted therein upon an axial shaft 31 and a coupling 38 connects the shaft to the motor shaft 20. A suitable spring-pressed packing gland 33 seals of! around the coupling 38 to prevent the escape of fluid from the impeller chamber. It is pointed out that the impeller 35 functions as a delivery or suction pump and has its inlet collar disposed within the opening 33 of-the plate 28 'so' as to' draw fluid from the suction chamber 35 and discharge the same outwardly through the ports 32 into the discharge chamber 25 and through the pipe l5 to the tank I2.

The shaft 31 extends downwardly through the inlet collar 40 of the impeller, through the suction chamber 35 and through an axial opening 4| formed in the partition 34 of the collar 22. A transverse plate or partition 42 extends across the base 2| and the lower end of the shaft 31 is journaled in thepartition 34 and base plate 42, an impeller or pump chamber 44 is formed for receiving an inverted impeller or pressure pump 45 which is carried by the shaft 31 and has its inlet collar 45 engaging within the opening 4| so as to communicate with the lower portion of the suction chamber 35 in axial alinement with the inlet collar 40. As shown in Fig. 5, the impeller chamber 44 has a volute outlet 44' communicating with a discharge port 41 which, in turn, communicates with the pressure or inlet pipe 48 of the ejection unit 13 (Fig. 2).

A similar port 49 is formed in the base plate 42 for receiving the discharge end of the suction or ejection pipe 50 of the ejection unit and this port communicates with the suction chamber 35 through an alined opening 5| formed in the partition 34. Communication between the lower ends of the pipes 43 and 53 is established by a return bend T or body 52 into the upper end of which said pipes are screw-threaded. A jet nozzle 53 is mounted in the body 52 in axial-communicating alinement with a venturi or suction tube 54 which is disposed within the ejection pipe 50. The body 52 communicates with a supply or tail pipe 55 which has a suitable check or foot valve 55 mounted therein (Fig. 4) and which extends into a well or to other source of fluid supply (not shown).

As has been hereinbefore pointed out, the discharge chamber 25 of the pump case 23 communicates with the tank 12 through the pipe l5. A supply of fluid under pressure is maintained in the tank for priming the pumping system and maintaining the discharge pressure thereof. Air under pressure is adapted to be supplied to the tank by the impeller 35. For admitting air to the impeller 35, an inlet opening 51 is formed in the wall of the collar 22 adjacent its upper end and receives a suitable check valve 58 which has a hose or tube 59 connected thereto. A float 50 is mounted in the tank upon a pivoted arm 5i and the arm extends through the wall of said tank for controlling the operation of an air inlet valve 52 communicating with the .outer end of the tube 59. When the fluid level within the tank rises above a predetermined point, the float 50 and its arm 5| swing upwardly to open the valve 52 and admit atmospheric air to the tube 59. This air is drawn through the tube and its valve 53 into the suction chamber 35 due to the suction created within the upper portion of said chamber by the impeller 35. From the suction chamber, the air passes through the impeller, and is forced through the volute ports 32, discharge chamber 25 and pipe l5 into the tank.

In surface or shallow well pumping. the pipes 48 and 50 of the ejection unit 13 may be connected directly in the openings 41 and 49 oi'the base plate 42 and the pipe 55 leads to a source of fluid supply such as within a well (not shown). To commence operation of the pumping apparatus, the same is filled with fluid through the pipe i5 and this fluid may be obtained directly from the tank l2. The foot valve 55 prevents the fluid from escaping through the pipe 55. When the motor I8 is started, priming is rapidly accomplished by the action of the ejection unit l3. Since the impeller 45 is inverted, its suction inlet 45 is submerged or flooded by the fluid in the chamber 35, whereby the full pressure created by said impeller is directed downwardly through the pipe 48 and upwardly through the jet nozzle 53 and Venturi tube 54 to develop a high vacuum around said nozzle and within the pipe 55. This vacuum rapidly removes air from the tail pipe together with other fluid and, upon entering the chamber 35, said air rises to the top thereof and enters the inlet 40 of the impeller 35, from which it is discharged through the ports 32 into the discharge chamber 25 and by the pipe l5 into the tank l2. This fast positive priming action without the use of valves or other regulating means is a novel feature of the invention.

It is pointed out that the suction chamber 35 is of sufiicient depth to maintain a fluid level above the inlet 45 of the inverted impeller 45 and thereby maintain said impeller submerged or flooded. Thus, the jet action created by this impeller is constant irrespective of the discharge pressure or the amount of air, drawn into the apparatus, whereby said apparatus cannot lose its prime. By providing two impellers, one for discharging fluid and the other for supplying fluid under pressure to'the jet, the capacity is increased over that of pumping systems having the same power input and this is especially true at low discharge pressures. Due to the depth of the suction chamber and the disposition of the impellers in spaced relation, with their inlets in axial communication with said chamber, the impeller 35 only withdraws fluid from the chamber in excess of the fluid required by the impeller 45 and the latter is maintained flooded or submerged to prevent the entrainment of air in the fluid supplied to the ejection unit.

For deep well operation, such as when the fluid level is more than twenty-five (25) feet below the impellers, the ejection unit I3 is disposed be low said fluid level and is connected to the suction and impeller chambers by the conductors l4 and 15, respectively, as shown in Fig. 1. The foot valve 55 (Fig. 4) is necessarily employed in such well installations. The apparatus is primed in the same manner by filling the same with fluid through the pipe [5. Upon starting the motor [8, fluid under pressure is'forced by the impeller 45 through the conductor l5, pipe 48 and body 52 to the jet nozzle 53 so as to create a vacuum around said nozzle well fluids through the check.

. circular partition 16.

5. and in said body 52 and pipe 55 so as to draw valve 66. This fluid mixes with the fluid ejected by the nozzle and is carried upwardly through the venturi tube 54, pipe 50 and conductor l4 into the suction chamber 35. Fluid in excess of that required by the impeller 45 is drawn upwardly and discharged by the impeller 36.

When it is desired to pump from greater depths,

increased pressure is necessary and is preferably.

obtained by employing an additional impeller or impellers. It is pointed out that the construction of the pump housing ll facilitates the addition of impellers for multi-stage operations. As shown in Fig. 6, the general construction of the pump housing remains substantially unchanged and includes substantially all of the same elements. In order to accomplish the conversion, thebolts 25 are removed and the base section 2 I is separated from the spacer collar 22 and an intermediate section or case 63 is interposed therebetween and fastened in place by means of similar bolts 64 of slightly greater length than the bolts 25. The case 63 is of the same diameter as the sections 2| and 22 and has a port 65 alined with and establishing communication between the port 49 and opening 5|. A partition 66, having an axial opening 61 for receiving the inlet collar 46 of the impeller 45, extends across the lower end of the case 63 and forms a top or upper closure for the impeller chamber 44. A spacer shaft 68 is substituted for the shaft 31 and has the impellers 36 and 45 mounted thereon in spaced relation within the chambers 4| and 44, respectively. The top of the intermediate case is closed by the bottom partition 34 of the spacer collar 22 and an impeller chamber 69 is formed below and in cooperation with said partition by an intermediate, An inverted impeller or pressure pump II is supported within the chamber 69 by the shaft 68 and has its inlet collar 12 disposed within the opening 4| of the partiexplanatory thereof and various changes in the size, shape and materials, as well as in the details of the illustrated construction may be made,-

within the scope of the appended claims, without departing from the spirit of the invention.

What I claim and desire to secure by Letters Patent is:

tion 34. The chamber 69 has a volute outlet 69' communicating with a discharge chamber 12 disposed externally of and below said impeller chamber, as shown in Fig. 7. A plurality of helical or volute, stationary vanes I3 depend from the lower portion of the partition Ill and rest upon the bottom partition 66 discharge chamber impeller 45.

To commence operation, the apparatus shown in Figs. 6 and 7 is fluid. Starting of the motor I I causes fluid under pressure to be delivered immediately to the jet nozzle 53 by the impellers and H, thereby creating a flow through the suction chamber 35. Fluid in excess of that required for the operation of the impellers 45 and 1! is withdrawn from the suction chamber and discharged by the impeller 36. With the impellers 45 and II operating in series, a constant supply of high pressure fluid is provided for the jet and the delivery impeller 36 discharges fluid at required discharge pressures independent of the jet operating pressure. Since the inlet of the impeller II is always flooded, operation from any depth within range of the ejection unit l3 may be accomplished without the use of control or pressure regulating valves. It is pointed out that this multi-stage arfor directing fluid from the 12 to the inlet collar 46 of the rangement, affords the highest efiiciency possible primed by being filled with connected to the nozzle 1. A pump system comprising a casing, an upper pump in said casing and a lower pumping means in said casing, said pump and pumping means being rotatable as a unit with suction in lets in juxtaposed relation and facing each other, a suction and air separating chamber in said casing and disposed between said pump and pumping means inlets,-a fluid connection from said upper pump to a point of use, a jet pump having a nozzle, a discharge from said pumping means side of said jet pump, a fluid connection from the outlet side of said jet pump to said suction and air separating chamber, and a source of fluid to be pumped connected to' the inlet side of said jet pump.

2. A pump system comprising a casing, an upper pump in said casing and a lower pump in said casing, said upper pump and saidlower pump being rotatable as a unit with suction inlets in juxtaposed relation and facing each other, a suction and air separating chamber in said casing and disposed between said upper and lower pumps, a fluid connection from-said upper pump to a point of use, a jet pump having a nozzle and a Venturi element, a discharge from said lower pump connected to the nozzle side of said jet pump, a fluid connection from the outlet side of said jet pump to said suction and air separating chamber, and means for introducing the fluid to be pumped at a position between the nozzle and the venturi of the said jet pump.

' 3. A pump system comprising a casing, an upper pump in said casing and a plurality of lower pumps in said casingsaid upper pump and said lower pumps being rotatable as a unit with suction inlets in juxtaposed relation, the inlet of said upper pump facing the inlet of one of said lower pumps, a suction and air separating chamber in said casing and disposed between said upper pump and said lower pump inlets, a fluid connection from said upper. pump to a pressure tank, a jet pump including a nozzle, a discharge from one of said lower pumps connected to the nozzle side of said jet pump, a fluid connection from the outlet side of said jet pump to said suction and air separating chamber, and a source of fluid to be pumped connected to the inlet side of said jet pump.

4. A pump system comprising a casing, an upper pump in saidcasing and a plurality of lower pumps in said casing, said upper pump and said lower pumps being rotatable as a unit with-suction inlets in juxtaposed relation, the inlet of said upper pump facing the inlet of one of said lower pumps, a suction and air separating chamber in said casing and disposed between said upper pump and said lower pump inlets, a fluid connection from said upper a jet pump including pump to a' pressure tank, a nozzle, a discharge from one of said lower pumps connected to the nozzle" fluid to be pumped connected to the inlet side of said jet pump, said lower pumps being arranged one above the other, and means for detachably connecting one of said lower pumps to said casing, said lower pumps comprising at least a two-stage pump system and said upper pump comprising at least a one-stage pump system.

5. A pump system comprising a casing, an upper pump in said casing and a plurality of lower pumps in said casing, said upper pump and said lower pumps being rotatable as a unit with suction inlets in juxtaposed relation, the inlet of said upper pump facing the inlet of one of said lower pumps, a suction and air separating chamber in said casing and disposed between said up-. per pump and said lower pump inlets, a fluid connection from said upper pump to a pressure tank,-

a jet pump including a nozzle, a discharge from one of said lower pumps connected to the nozzle side of said jet pump, a fluid connection from the outlet side of said jet pump to said suction and air separating chamber, and a source of fluid to be pumped connected to the inlet side of said jet 8 pumping means inlets, a fluid connection from said upper pump to a pressure tank, a jet pump, a. discharge from said pumping means connected to the inlet side of said jet pump, a fluid connection from the outlet side of said jet pump to said suction and air separationjchamber, and a source of fluid to be pumped connected to the inlet side of said jet pump, and an air line connected to said suction and air separating chamber, and means actuated by the fluid level within said pressure tank for admitting atmospheric air through said air line to said chamber, said pumping means including a plurality of pumps whereby to comprise a multi-stage pump system.

9. A pump system comprising 'a casing, an upper pump in said casing and a lower pump in said casing, said upper pump and said lower pump being rotatable as a unit with suction inlets in juxaposed relation and facing each other, a suction and air separating chamber in said casing and disposed between said upper and lower pump, and a common shaft means for mounting all of said rotatable pumps.

6. A pump system comprising a casing, an upper pump in said casing and a plurality of lower pumps in said casing, said upper pump and said lower pumps being rotatable as a unit with suction inlets in juxtaposed relation, the inlet of said upper pump facing the inlet of one of said lower pumps,a suction and air separating chamber in said casing and disposed between said upper pump and said lower pump inlets, a fluid connection from said upper pump to a pressure tank,

a jet pump including a nozzle, a discharge from I one of said lower pumps connected to the nozzle side of said jet pump, a fluid connection from the outlet side of said jet pump to said suction and air separating chamber, and a source of fluid to be pumped connected to the inlet side of said jet pump, said lower pumps being arranged one above the other, and means for detachably connecting one of said lower pumps to said casing, said lower pumps comprising at least a two-stage pump system and said upper pump comprising at least a one-stage pump system, and a common shaft means for mounting all of said rotatable pumps.

7. A pump system comprising a casing, an upper pump in said casing and a lower pumping means in said casing, said pump and pumping means being rotatable as a unit with suction inlets in juxtaposed relation and facing each other, a suction andair separating chamber in said casing and disposed between said pump and pumping means inlets, a fluid connection from said upper pump to a pressure tank, a jet pump including a nozzle, a discharge from said pumping means connected to the nozzle side of said iet pump, a fluid connection from the outlet side of said jet pump to said suction and air separating chamber, and a source of fluid to be pumped connected-to the inlet side of said jet pump, and an air line connected to said suction and air separating chamber, and means actuated by the fluid level within said pressure tank for admitting atmospheric air through said air line to said chamber.

8. A pump system comprising a casing, an upper pump in said casing and a lower pumping means in said casing, said pump and pumping means being rotatable as a unit with suction inlets in juxtaposed relation and facing each other, a suction and air separating chamber in said casing and disposed between said pump and pumps, a fluid connection from said upper pump to a point of use, a jet pump including a nozzle and venturi element, a discharge from said lower pump connected to the nozzle side of said jet pump, a fluid connection from said outlet side of said jet pump to said suction and air separating chamber, and means for introducing the fluid to be pumped at a position between the nozzle and the venturi of the said pump, said point of use comprising a pressure tank and said lower pump discharging directly into said discharge that is connected to the nozzle side of said jet pump.

10. A pump system comprising a casing, an upper pump in said casing and a lower pumping means in said casing, said pump and pumping means being rotatable as a unit with suction inlets in juxtaposed relation and facing each other, a suction and air separating chamber in said casing and disposed between said pump and pumping means inlets, a fluid connection from said upper pump to a point of use, a jet pump including a nozzle, a discharge from said pumping means connected to the nozzle side of said jet pump, a fluid connection from the outlet side of said jet pump to said suction and air separating chamber,

' and a source of fluid to be pumped connected to the inlet side of said jet pump, said casing comprising a plurality of sections and means for removably securing said sections to each other.

11. A pump system comprising a casing, an upper pump in said casing and a lower pump in said casing, said upper pump and said lower pump being rotatable as a unit with suction inlets in juxtaposed relation and facing each other, a suction and air separating chamber in said casing and disposed between said upper and lower pumps, a fluid connection from said upper pump to a point of use, a. jet pump including a nozzle and venturi element, a discharge from said lower pump connected to the nozzle side of said jet pump, a fluid connection from said outlet side of said jet pump to said suction and air separating chamber, and means for introducing the fluid to be pumped at a position between the nozzle and the venturi of the said pump, said casing comprising a plurality of sections and means for removably securing said sections to each other.

12. A pump system comprising a casing, an'

ing and disposed between said pump and pumping means inlets, a fluid connection from said upper pump to a point of use, a jet pump including a nozzle, a discharge from said pumping means connected to the nozzle side of said jet pump, a fluid connection from the outlet side oi! said jet pump to said suction and air separating chamber, and a source 01' fluid to be pumped connected to the inlet side of said jet pump, said casing comprising a plurality of sections and means for connecting said sections together on substantially horizontal planes.

WILLIAM J. CONERY.

l0 nmnncns crrzn The following referencesare of record in the file of this patent:

UNITED STATES PATENTS

US724171A 1947-01-24 1947-01-24 Jet pumping system and apparatus Expired - Lifetime US2466792A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603157A (en) * 1948-09-07 1952-07-15 F E Myers & Bro Co Double rotary jet pump
US2623466A (en) * 1948-11-01 1952-12-30 Fairbanks Morse & Co Dual discharge pump
US2691346A (en) * 1948-09-07 1954-10-12 F E Myers & Bro Co Double rotary fluid pump
US2695564A (en) * 1950-09-09 1954-11-30 Perry I Nagle Priming device for pumps
US2735367A (en) * 1956-02-21 kenney
US2826148A (en) * 1953-12-11 1958-03-11 Ohio Commw Eng Co Submersible combined centrifugal and jet pump
US3149571A (en) * 1959-12-11 1964-09-22 Nichols Victoria Deep well liquid removal system
US3158295A (en) * 1962-03-14 1964-11-24 F E Myers & Bro Co Submersible pump
US3894813A (en) * 1974-01-30 1975-07-15 Trw Inc Aircraft fuel supply system having a dual stream tow-phase fluid pump
WO1995032046A1 (en) * 1994-05-24 1995-11-30 Aquaria, Inc. Dual impeller pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1038201A (en) * 1912-06-18 1912-09-10 Auguste Camille Edmond Rateau Means for increasing the height of suction of pumps.
US2004417A (en) * 1929-05-13 1935-06-11 Penn Electric Switch Co Air volume controlling device for water storage tanks
US2315656A (en) * 1942-01-27 1943-04-06 Berkeley Pump Corp Dual pressure pumping system
US2344958A (en) * 1941-07-15 1944-03-28 Jacuzzi Bros Inc Pumping system
US2424285A (en) * 1941-05-31 1947-07-22 Jacuzzi Bros Inc Pump and pump system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1038201A (en) * 1912-06-18 1912-09-10 Auguste Camille Edmond Rateau Means for increasing the height of suction of pumps.
US2004417A (en) * 1929-05-13 1935-06-11 Penn Electric Switch Co Air volume controlling device for water storage tanks
US2424285A (en) * 1941-05-31 1947-07-22 Jacuzzi Bros Inc Pump and pump system
US2344958A (en) * 1941-07-15 1944-03-28 Jacuzzi Bros Inc Pumping system
US2315656A (en) * 1942-01-27 1943-04-06 Berkeley Pump Corp Dual pressure pumping system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735367A (en) * 1956-02-21 kenney
US2603157A (en) * 1948-09-07 1952-07-15 F E Myers & Bro Co Double rotary jet pump
US2691346A (en) * 1948-09-07 1954-10-12 F E Myers & Bro Co Double rotary fluid pump
US2623466A (en) * 1948-11-01 1952-12-30 Fairbanks Morse & Co Dual discharge pump
US2695564A (en) * 1950-09-09 1954-11-30 Perry I Nagle Priming device for pumps
US2826148A (en) * 1953-12-11 1958-03-11 Ohio Commw Eng Co Submersible combined centrifugal and jet pump
US3149571A (en) * 1959-12-11 1964-09-22 Nichols Victoria Deep well liquid removal system
US3158295A (en) * 1962-03-14 1964-11-24 F E Myers & Bro Co Submersible pump
US3894813A (en) * 1974-01-30 1975-07-15 Trw Inc Aircraft fuel supply system having a dual stream tow-phase fluid pump
WO1995032046A1 (en) * 1994-05-24 1995-11-30 Aquaria, Inc. Dual impeller pump
US5603831A (en) * 1994-05-24 1997-02-18 Aquaria, Inc. Dual impeller pump

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