US2470563A - Pump - Google Patents

Pump Download PDF

Info

Publication number
US2470563A
US2470563A US516787A US51678744A US2470563A US 2470563 A US2470563 A US 2470563A US 516787 A US516787 A US 516787A US 51678744 A US51678744 A US 51678744A US 2470563 A US2470563 A US 2470563A
Authority
US
United States
Prior art keywords
pump
motor
liquid
rotor
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US516787A
Inventor
Irving C Jennings
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US516787A priority Critical patent/US2470563A/en
Application granted granted Critical
Publication of US2470563A publication Critical patent/US2470563A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/103—Mounting pumps on fuel tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F04D29/606—Mounting in cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/60—Fluid transfer
    • F05D2260/602—Drainage
    • F05D2260/6022—Drainage of leakage having past a seal

Definitions

  • This invention relates to improvements 1n electric pumps of the type adapted to be submerged in a liquid during operation thereof, for example, within the fuelv tank of an airplane.
  • the primary object of the present invention is to provide a pump of the character aforesaid wherein drag is largely eliminated with consequent economy and increased efliciency in operation.
  • a further and more specific object of the invention is to accomplish the aforesaid result by preventing ingress of liquid to the motor during operation of the pump, and by automatically removing from the motor upon starting the same any liquid that seeps thereinto during periods of rest.
  • Figure 1 is a vertical section through a pump in accordance with this invention in applied position.
  • Figure 2 is a reduced vertical section through a container showing a pump in accordance with this invention mounted therein.
  • Figure 3 is a fragmentary section similar to Figure 1 showing a slightly modified form of pump.
  • the numeral I indicates a motor housing which contains an armature 2 mounted on a shaft 3 supported in preferably self-lubricating bearings H adjacent the ends of the armature.
  • the shaft 3 is provided with a reduced portion 3 upon which is mounted a centrifugal pump impeller 4 housed within a volute casing 5.
  • the pump has an inlet 6, and discharges through an outlet passage 1 to a lead-off pipe 8, the latter being located out side the container or tank 22.
  • a strainer 9 Surrounding the inlet 6 is a strainer 9 having an open end abutting against a removable closure plate In for an opening in the container 22, the plate being detachably connected with the container in any suitable manner.
  • the entire pump assembly is fixedly mounted on the plate In so that the same 2 may be readily removed for inspection or repairs.
  • auxiliary centrifugal pump l2 Disposed between the casings l and 5 is an auxiliary centrifugal pump l2 having an impeller I 5 preferably in the form of a disc provided on its side faces with blades l5. During rotation of the shaft, any liquid seeping past the impeller hub clearance indicated at I1 is picked up by the impeller I5 and discharged through a check valve l6 into the container 22.
  • the casing l is provided with a vent pipe l8 so that it is only necessary for the auxiliary pump I2 to overcome the static head of the liquid within the casing Any superimposed pressure, which often is very high in enclosed tanks, is balanced.
  • the modification shown in Figure 3 is designed for use when it is desired to flow liquid through the armature shaft bearings II to cool or lubricate the same.
  • the upper end of the casing I 3 has mounted thereon an cent each end of the casing.
  • Such pumps are designated by the numerals l3 and I4, and each of which is disposed inwardly of the adjacent bearin I I.
  • liquid may seep past the bearings to cool or lubricate the same, such seepage being picked up by the impellers 20 of the pumps I3 and I4 and discharged through check valves 2
  • the auxiliary pump Since the auxiliary pump is relatively small, with only a small amount of liquid at low head bein handled, the power required to drive the same is very small. Except immediately after starting the motor after a period of rest, the armature 2 turns freely in air or gas with only negligible friction whereby the efiiciency of the entire unit is increased while the power required to operate the same is decreased,
  • a motor driven pump unit of the type adapted to be operated while submerged in a liquid comprising a casing pro-1 vided with upper and lower end walls to define a motor chamber substantially sealed against the inflow of liquid, an electric motor in said chamber having a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one of said bearings being mounted in said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, a rotary auxiliary pump outside said motor chamber and below said last mention'ed bearing, driven from said motor shaft, and having a rotor with its suction side in communication with the in terior of said motor chamber through the relative slide faces of said last-mentioned bearing, whereby leakage liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces, and a, gas vent pipe for said motor chamber adapted to extend above the surface: of the pump submerging liquid to prevent pressure build-up in said chamber greater than that directly above the surface of'the submerging liquid
  • a motor driven pump unit of the type adapted tobe' operated while submerged in a liquid comprising a casing provided'with upper and lower end walls to define a'motor chamber'substantially sealed against the inflow of liquid, an electric motor in said chamber having a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one of said bearings being mounted in said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, and a rotary'auxiliary'pump'outside said motor chamber and below said last-mentioned bearing, driven from said motor shaft, and having a rotor with its suction side in communication with the interior of said motor chamber through the relative slide faces of said last-mentioned bearing, whereby leakage liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces, the stationary part of said lower casing wall having a passage between the motor chamber and the suction side of the rotor of said auxiliary pump separate from the leakage route defined by said
  • a motor driven pump unit of the type adapted to be operated while submerged in a liquid comprising a casing provided with upper and lower end walls to define a motor chamber substantially sealed against the inflow of liquid, an electric motor in said chamber having a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one of said bearings being mounted in said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, and a rotary auxiliary pump outside said motor chamher and below said last-mentioned bearing, driven from said motor shaft, and having a rotor with itssuction side in communication with the interior of said motor chamber throughthe relative slide faces of said last-mentioned bearing, whereby leakage liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces, said'main pump being disposed below said auxiliary pump, and including a rotor, a, shaft for said latter rotor coaxial with and driven from said motor shaft, and
  • a motor driven pump unit of the type adapted to be operated while submerged in a liquid comprising a casing provided with upper and lower end walls to define a motor chamber substantially sealed against the inflow of liquid, an electric motor insaid chamber'havin'g' a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one of said bearings being mounted in said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, a rotary auxiliary pump outside said motor chamber and below said last-mentioned bearing, driven from said motor shaft, and having a rotor with its-suction side in communication with the interior of said motor chamber through the relative slide faces of said last-mentioned bearing, whereby leakage'liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces, the other bearing of said motor shaft being mounted in said upper casing wall and having the upper end of its relative slide faces exposed for direct communication with the submerging liquid, a second auxiliary pump at the upper
  • a motor driven pump unit of the type adapted to be operated while submerged in a liquid comprising a casing provided with upper and lower end walls to define a motor chamber substantially sealed against the inflow of liquid, an electric motor in said chamber having a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one "of said bearings being mounted in said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, a rotary auxiliary pump outside said motor chamber and below said last-menti'oned' bearing, driven from said motor shaft, and having a, rotor with its suction side in communication with the interior of said motor chamber through the relative slid-e faces of said lastmentioned bearing, whereby leakage liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces, a gas vent pipe for said motor chamber adapted to extend above the surface of the submerging liquid to prevent pressure build-up in said chamber, said lower casing wall having a passage between the motor chamber and the
  • a motor driven pump unit of the type adapted to be operated while submerged in a liquid comprising a, casing provided with upper and lower end walls to define a motor chamber substantially sealed against the inflow of liquid, an electric motor in said chamher having a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one of said bearings being of the cylindrical sleeve type and being mounted on said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, and a rotary auxiliary pump outside said motor chamber and below said last-mentioned bearing, driven from said motor shaft, and having a rotor with its suction side in communication with the interior of said motor chamber through the relative cylindrical slide faces of said last-mentioned bearing, whereby leakage liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces.

Description

May 17, 1949. l. 0. JENNINGS 9 5 PUMP Filed Jan. 3, 1944 3 Sheets-Sheet l Irving 6. vfieflilmga,
E? @wew y 7, 1949. 1. c. JENNINGS 2,470,563
PUMP
Filed Jan. 5, 1944 3 Sheets-Sheet 2 Iramg 0. Jen 7261196,
May 17, 1949.
Filed Jan. 3, 1944 I. C. JENNINGS PUMP 3 Sheets-Sheet 3 Patented May 17, 1949 UNITED STATES PATENT OFFICE PUMP Irving 0. Jennings, South Nor-walk, Conn. Application January 3, 1944, Serial No. 516,787
6 Claims.
This invention relates to improvements 1n electric pumps of the type adapted to be submerged in a liquid during operation thereof, for example, within the fuelv tank of an airplane.
When it is desired to employ a booster pump in connection with a tank containing a solution, oftentimes volatile, and sometimes subject to pressure on the liquid, usually with low suction head, it is customary to mount a high speed, electrically operated centrifugal pump entirely within the tank in order to eliminate stuiiing boxes with their attendant annoyances, such as leakage and development of friction, and to save space.
The primary object of the present invention is to provide a pump of the character aforesaid wherein drag is largely eliminated with consequent economy and increased efliciency in operation.
A further and more specific object of the invention is to accomplish the aforesaid result by preventing ingress of liquid to the motor during operation of the pump, and by automatically removing from the motor upon starting the same any liquid that seeps thereinto during periods of rest.
In the accompanying drawing:
Figure 1 is a vertical section through a pump in accordance with this invention in applied position.
Figure 2 is a reduced vertical section through a container showing a pump in accordance with this invention mounted therein.
Figure 3 is a fragmentary section similar to Figure 1 showing a slightly modified form of pump.
Referring to the drawing in detail, with particular reference to Figure 1, the numeral I indicates a motor housing which contains an armature 2 mounted on a shaft 3 supported in preferably self-lubricating bearings H adjacent the ends of the armature. As shown, the shaft 3 is provided with a reduced portion 3 upon which is mounted a centrifugal pump impeller 4 housed within a volute casing 5. The pump has an inlet 6, and discharges through an outlet passage 1 to a lead-off pipe 8, the latter being located out side the container or tank 22. Surrounding the inlet 6 is a strainer 9 having an open end abutting against a removable closure plate In for an opening in the container 22, the plate being detachably connected with the container in any suitable manner. The entire pump assembly is fixedly mounted on the plate In so that the same 2 may be readily removed for inspection or repairs.
Disposed between the casings l and 5 is an auxiliary centrifugal pump l2 having an impeller I 5 preferably in the form of a disc provided on its side faces with blades l5. During rotation of the shaft, any liquid seeping past the impeller hub clearance indicated at I1 is picked up by the impeller I5 and discharged through a check valve l6 into the container 22.
During periods of rest, liquid Will seep past the clearance into the casing l gradually filling the same, but upon starting the motor this liquid will be drawn through a passage l9 into the pump l2 and then discharged through the check valve IS.
The casing l is provided with a vent pipe l8 so that it is only necessary for the auxiliary pump I2 to overcome the static head of the liquid within the casing Any superimposed pressure, which often is very high in enclosed tanks, is balanced.
The modification shown in Figure 3 is designed for use when it is desired to flow liquid through the armature shaft bearings II to cool or lubricate the same. In this modification, the upper end of the casing I 3 has mounted thereon an cent each end of the casing. Such pumps are designated by the numerals l3 and I4, and each of which is disposed inwardly of the adjacent bearin I I. During rotation of the shaft 3, as well as during periods of rest, liquid may seep past the bearings to cool or lubricate the same, such seepage being picked up by the impellers 20 of the pumps I3 and I4 and discharged through check valves 2|. Any liquid collecting within the casing during evacuated through the passage l9 by the auxiliary pump I3.
Since the auxiliary pump is relatively small, with only a small amount of liquid at low head bein handled, the power required to drive the same is very small. Except immediately after starting the motor after a period of rest, the armature 2 turns freely in air or gas with only negligible friction whereby the efiiciency of the entire unit is increased while the power required to operate the same is decreased,
Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:
1. In a motor driven pump unit of the type adapted to be operated while submerged in a liquid, the combination comprising a casing pro-1 vided with upper and lower end walls to define a motor chamber substantially sealed against the inflow of liquid, an electric motor in said chamber having a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one of said bearings being mounted in said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, a rotary auxiliary pump outside said motor chamber and below said last mention'ed bearing, driven from said motor shaft, and having a rotor with its suction side in communication with the in terior of said motor chamber through the relative slide faces of said last-mentioned bearing, whereby leakage liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces, and a, gas vent pipe for said motor chamber adapted to extend above the surface: of the pump submerging liquid to prevent pressure build-up in said chamber greater than that directly above the surface of'the submerging liquid.
- 2. In a motor driven pump unit of the type adapted tobe' operated while submerged in a liquid, the combination comprising a casing provided'with upper and lower end walls to define a'motor chamber'substantially sealed against the inflow of liquid, an electric motor in said chamber having a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one of said bearings being mounted in said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, and a rotary'auxiliary'pump'outside said motor chamber and below said last-mentioned bearing, driven from said motor shaft, and having a rotor with its suction side in communication with the interior of said motor chamber through the relative slide faces of said last-mentioned bearing, whereby leakage liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces, the stationary part of said lower casing wall having a passage between the motor chamber and the suction side of the rotor of said auxiliary pump separate from the leakage route defined by said bearing faces, said passage serving to evacuate'the motor chamber through the action of said auxiliary pump.
3. Ina motor driven pump unit of the type adapted to be operated while submerged in a liquid, .the'c'ornbination comprising a casing provided with upper and lower end walls to define a motor chamber substantially sealed against the inflow of liquid, an electric motor in said chamber having a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one of said bearings being mounted in said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, and a rotary auxiliary pump outside said motor chamher and below said last-mentioned bearing, driven from said motor shaft, and having a rotor with itssuction side in communication with the interior of said motor chamber throughthe relative slide faces of said last-mentioned bearing, whereby leakage liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces, said'main pump being disposed below said auxiliary pump, and including a rotor, a, shaft for said latter rotor coaxial with and driven from said motor shaft, and a bearing for said main pump shaft between the rotor of said auxiliary pump and the rotor of said main pump shaft, the rotor of said auxiliary pump having a suction side incommunication with the slide faces of said latter bearing, whereby leakage liquid is drawn by said auxiliary pump from the chamber of the main pump and along said latter bearing faces.
4. In a motor driven pump unit of the type adapted to be operated while submerged in a liquid, the combination comprising a casing provided with upper and lower end walls to define a motor chamber substantially sealed against the inflow of liquid, an electric motor insaid chamber'havin'g' a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one of said bearings being mounted in said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, a rotary auxiliary pump outside said motor chamber and below said last-mentioned bearing, driven from said motor shaft, and having a rotor with its-suction side in communication with the interior of said motor chamber through the relative slide faces of said last-mentioned bearing, whereby leakage'liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces, the other bearing of said motor shaft being mounted in said upper casing wall and having the upper end of its relative slide faces exposed for direct communication with the submerging liquid, a second auxiliary pump at the upper end of the casing; having a rotor on said motor shaft between said'upper' bearing and the rotor of said motor, the rotor of said second auxiliary pump having its suction side in communication with the bearing slide faces of said upper bearing to draw liquid from the body of submerging liquid and along said last-mentionedslide faces.
5. In a motor driven pump unit of the type adapted to be operated while submerged in a liquid, the combination comprising a casing provided with upper and lower end walls to define a motor chamber substantially sealed against the inflow of liquid, an electric motor in said chamber having a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one "of said bearings being mounted in said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, a rotary auxiliary pump outside said motor chamber and below said last-menti'oned' bearing, driven from said motor shaft, and having a, rotor with its suction side in communication with the interior of said motor chamber through the relative slid-e faces of said lastmentioned bearing, whereby leakage liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces, a gas vent pipe for said motor chamber adapted to extend above the surface of the submerging liquid to prevent pressure build-up in said chamber, said lower casing wall having a passage between the motor chamber and the suction side of the rotor of said auxiliary pump separate from the leakage route defined by said bearing faces, said passage serving to evacuate the motor chamber through the action of said auxiliary pump, and said main-pump being disposed below said auxiliary pump and including arotor, a shaft for said rotor coaxial with and driven from said motor shaft, and a bearing for said main pump shaft between the rotor of said auxiliary pump and the rotor of said main pump shaft, the rotor of said auxiliary pump having a suction side in communication with the slide faces of said latter bearing, whereby leakage liquid is drawn by said auxiliary pump from the chamber of the main pump and along said'latter bearing faces.
6. In a motor driven pump unit of the type adapted to be operated while submerged in a liquid, the combination comprising a, casing provided with upper and lower end walls to define a motor chamber substantially sealed against the inflow of liquid, an electric motor in said chamher having a rotor and an upright shaft on which said rotor is mounted, bearings for said shaft, one of said bearings being of the cylindrical sleeve type and being mounted on said lower casing wall, a main rotary pump outside said motor chamber driven from said motor shaft, and a rotary auxiliary pump outside said motor chamber and below said last-mentioned bearing, driven from said motor shaft, and having a rotor with its suction side in communication with the interior of said motor chamber through the relative cylindrical slide faces of said last-mentioned bearing, whereby leakage liquid is drawn by said auxiliary pump from said motor chamber and along said bearing faces.
IRVING 0. JENNINGS.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,380,943 Baum June 7, 1921 1,428,238 Keating Sept. 5, 1922 1,736,002 Frickey et a1 Nov. 19, 1929 1,778,787 Arutunofi Oct. 21, 1930 1,954,824 Mendenhall et al. Apr. 17, 1934 1,974,678 La Font Sept. 25, 1934 2,002,914 Mendenhall et al. May 28, 1935 2,011,341 Mendenhall et al. Aug. 13, 1935 2,055,481 Coberly Sept. 29, 1936 2,312,526 Curtis Mar. 2, 1943 2,369,440 Curtis Feb. 13, 1945 FOREIGN PATENTS Number Country Date 240,486 Great Britain Sept. 26, 1925
US516787A 1944-01-03 1944-01-03 Pump Expired - Lifetime US2470563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US516787A US2470563A (en) 1944-01-03 1944-01-03 Pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US516787A US2470563A (en) 1944-01-03 1944-01-03 Pump

Publications (1)

Publication Number Publication Date
US2470563A true US2470563A (en) 1949-05-17

Family

ID=24057088

Family Applications (1)

Application Number Title Priority Date Filing Date
US516787A Expired - Lifetime US2470563A (en) 1944-01-03 1944-01-03 Pump

Country Status (1)

Country Link
US (1) US2470563A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636442A (en) * 1950-04-08 1953-04-28 Mechanisms Company Centrifugal pump
US2660953A (en) * 1949-08-06 1953-12-01 Fairbanks Morse & Co Fluid pump assembly
US2686389A (en) * 1951-04-03 1954-08-17 Cullen B Rozell Display device for cut flowers
US2701529A (en) * 1952-04-08 1955-02-08 Weil Pump Co Submersible sump pump
US2921532A (en) * 1956-02-17 1960-01-19 Tokheim Corp Submerged motor pump
US2976809A (en) * 1954-08-11 1961-03-28 Buschhorn Walther Centrifugal pump and method of its production
US3064340A (en) * 1957-12-23 1962-11-20 Borg Warner Device for removing a motor and impeller assembly from a liquid booster pump assembly mounted within a liquid supply tank
US3574487A (en) * 1967-10-18 1971-04-13 Patents & Dev As Pump means
US3635599A (en) * 1969-04-04 1972-01-18 Air Reduction Flame-arresting vent valve
US3767321A (en) * 1972-05-26 1973-10-23 R Layne Seal means for axial flow pump and the like
US3771926A (en) * 1971-12-06 1973-11-13 R S Corcoran Co Leakage preventing arrangement for pressurized fluid system such as pumps and the like
US3790312A (en) * 1971-07-23 1974-02-05 H Bottoms Pumps for liquids
US3932070A (en) * 1974-02-26 1976-01-13 Ametek, Inc. Electric motor fan unit for wet working air
US4966534A (en) * 1989-05-02 1990-10-30 Hasslen Iii John S Sump draining apparatus
US6171080B1 (en) * 1998-02-24 2001-01-09 Smc Corporation Immersed vertical pump with reduced thrust loading
US20140294631A1 (en) * 2011-11-07 2014-10-02 Denso Corporation Water pump
WO2015135020A1 (en) * 2014-03-11 2015-09-17 Pumpeng Pty Ltd Submersible pump and method of pumping fluid
US10890353B2 (en) * 2016-10-10 2021-01-12 Aspen Pumps Limited Centrifugal pump flow modifier
US20210277912A1 (en) * 2020-03-09 2021-09-09 Dab Pumps S.P.A. Electric pump with jacket

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1380943A (en) * 1917-09-27 1921-06-07 Gen Electric Submersible motor
US1428238A (en) * 1921-04-04 1922-09-05 John B Keating Submersible pump and the like
GB240486A (en) * 1924-09-27 1926-12-28 Wilhelm Jakob Hoffman Improvements in or relating to protective devices for fluid immersed electro-motors
US1736002A (en) * 1925-12-26 1929-11-19 Royal E Frickey Pumping system
US1778787A (en) * 1927-04-15 1930-10-21 Reda Pump Company Motor protector
US1954824A (en) * 1927-11-07 1934-04-17 Menhorn Inc Vacuum surrounded motor
US1974678A (en) * 1930-10-04 1934-09-25 Lafont Lucien Pump
US2002914A (en) * 1932-09-26 1935-05-28 Menhorn Inc Construction for submersible motors and the like
US2011341A (en) * 1934-03-26 1935-08-13 Menhorn Inc Oil-filled electric motor structure
US2055481A (en) * 1934-10-05 1936-09-29 Submersible Motorpump Co Ltd Method of and apparatus for reducing skin-friction losses
US2312526A (en) * 1941-09-05 1943-03-02 Curtis Pump Co Booster pump
US2369440A (en) * 1943-06-12 1945-02-13 Curtis Pump Co Self-lubricated and cooled pump and motor assembly

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1380943A (en) * 1917-09-27 1921-06-07 Gen Electric Submersible motor
US1428238A (en) * 1921-04-04 1922-09-05 John B Keating Submersible pump and the like
GB240486A (en) * 1924-09-27 1926-12-28 Wilhelm Jakob Hoffman Improvements in or relating to protective devices for fluid immersed electro-motors
US1736002A (en) * 1925-12-26 1929-11-19 Royal E Frickey Pumping system
US1778787A (en) * 1927-04-15 1930-10-21 Reda Pump Company Motor protector
US1954824A (en) * 1927-11-07 1934-04-17 Menhorn Inc Vacuum surrounded motor
US1974678A (en) * 1930-10-04 1934-09-25 Lafont Lucien Pump
US2002914A (en) * 1932-09-26 1935-05-28 Menhorn Inc Construction for submersible motors and the like
US2011341A (en) * 1934-03-26 1935-08-13 Menhorn Inc Oil-filled electric motor structure
US2055481A (en) * 1934-10-05 1936-09-29 Submersible Motorpump Co Ltd Method of and apparatus for reducing skin-friction losses
US2312526A (en) * 1941-09-05 1943-03-02 Curtis Pump Co Booster pump
US2369440A (en) * 1943-06-12 1945-02-13 Curtis Pump Co Self-lubricated and cooled pump and motor assembly

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660953A (en) * 1949-08-06 1953-12-01 Fairbanks Morse & Co Fluid pump assembly
US2636442A (en) * 1950-04-08 1953-04-28 Mechanisms Company Centrifugal pump
US2686389A (en) * 1951-04-03 1954-08-17 Cullen B Rozell Display device for cut flowers
US2701529A (en) * 1952-04-08 1955-02-08 Weil Pump Co Submersible sump pump
US2976809A (en) * 1954-08-11 1961-03-28 Buschhorn Walther Centrifugal pump and method of its production
US2921532A (en) * 1956-02-17 1960-01-19 Tokheim Corp Submerged motor pump
US3064340A (en) * 1957-12-23 1962-11-20 Borg Warner Device for removing a motor and impeller assembly from a liquid booster pump assembly mounted within a liquid supply tank
US3574487A (en) * 1967-10-18 1971-04-13 Patents & Dev As Pump means
US3635599A (en) * 1969-04-04 1972-01-18 Air Reduction Flame-arresting vent valve
US3790312A (en) * 1971-07-23 1974-02-05 H Bottoms Pumps for liquids
US3771926A (en) * 1971-12-06 1973-11-13 R S Corcoran Co Leakage preventing arrangement for pressurized fluid system such as pumps and the like
US3767321A (en) * 1972-05-26 1973-10-23 R Layne Seal means for axial flow pump and the like
US3932070A (en) * 1974-02-26 1976-01-13 Ametek, Inc. Electric motor fan unit for wet working air
US4966534A (en) * 1989-05-02 1990-10-30 Hasslen Iii John S Sump draining apparatus
US6171080B1 (en) * 1998-02-24 2001-01-09 Smc Corporation Immersed vertical pump with reduced thrust loading
US20140294631A1 (en) * 2011-11-07 2014-10-02 Denso Corporation Water pump
US9726182B2 (en) * 2011-11-07 2017-08-08 Toyota Jidosha Kabushiki Kaisha Electric water pump motor casing
WO2015135020A1 (en) * 2014-03-11 2015-09-17 Pumpeng Pty Ltd Submersible pump and method of pumping fluid
AU2015230662B2 (en) * 2014-03-11 2017-08-24 Pumpeng Pty Ltd Submersible pump and method of pumping fluid
US10514047B2 (en) * 2014-03-11 2019-12-24 Pumpeng Pty Ltd Submersible pump and method of pumping fluid
US10890353B2 (en) * 2016-10-10 2021-01-12 Aspen Pumps Limited Centrifugal pump flow modifier
US20210277912A1 (en) * 2020-03-09 2021-09-09 Dab Pumps S.P.A. Electric pump with jacket
US11898574B2 (en) * 2020-03-09 2024-02-13 Dab Pumps S.P.A. Pump having an electric motor contained in a shell enclosed by a monolithically provided containment jacket

Similar Documents

Publication Publication Date Title
US2470563A (en) Pump
US2369440A (en) Self-lubricated and cooled pump and motor assembly
GB1292384A (en) Electric pump arrangements
ES358649A1 (en) Improvements in submersible centrifugal pumps. (Machine-translation by Google Translate, not legally binding)
SE7409169L (en)
US1632357A (en) Pump or impeller
US2807395A (en) Electric fuel pump mounting
GB1320841A (en) Motor driven pump
US3082694A (en) Self-priming centrifugal pump
GB192618A (en) Improvements in and relating to centrifugal pumps
US1472560A (en) Liquid-pumping apparatus
US2624286A (en) Submerged pump and motor assembly
US2939400A (en) Submersible motor-pump assembly
US3189264A (en) Vacuum pump drive and seal arrangement
ES351347A1 (en) Improvements in or relating to Motor Pump Assemblies
US2332875A (en) Self-priming pump
US1949796A (en) Pump or impeller
GB914912A (en) Improvements in or relating to glandless centrifugal pumps for liquids with built-inelectric motor
GB1501692A (en) Motorpump assemblies
GB782533A (en) Improvements relating to rotary pumps
GB895256A (en) Improvements in and relating to submersible pumps
GB1204165A (en) Improvements in or relating to motor-driven impeller pumps
US2413461A (en) Pump
GB1236441A (en) Improvements in or relating to liquid pumps
US3333545A (en) Centrifugal pump