US2517233A - Single cavity type motor-driven pump - Google Patents
Single cavity type motor-driven pump Download PDFInfo
- Publication number
- US2517233A US2517233A US642315A US64231546A US2517233A US 2517233 A US2517233 A US 2517233A US 642315 A US642315 A US 642315A US 64231546 A US64231546 A US 64231546A US 2517233 A US2517233 A US 2517233A
- Authority
- US
- United States
- Prior art keywords
- housing
- pump
- motor
- rotor
- impeller
- 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
Links
- 239000007788 liquid Substances 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000008439 repair process Effects 0.000 description 5
- 238000005266 casting Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
- F04D13/0606—Canned motor pumps
- F04D13/064—Details of the magnetic circuit
Definitions
- This invention relates to a motor driven pump
- the chief object of this invention is to provide such a unit wherein simplicity is of the highest order, operational wear is materially reduced, and operational failure is substantially eliminated, and such a unit furthermore can be easily and economically produced, readily lending itself to mass production and facilitating inspection and repairs when necessary.
- One chief feature of this invention resides in what might be termed a single cavity type unit, that is, one wherein the motor rotor is exposed to the fluid handled by the pump.
- Another chief feature of the invention resides in arrangement of the rotating parts so that all are enclosed, thereby eliminating the necessity for exterior glands and the like.
- Another feature of the invention resides in the internal communication of the so-called “single" cavity unit whereby, regardless of unit positioning, the cavity is always exposed to the fluid handled by the pump.
- Fig. 1 is an end elevation of the unit embodying the invention and of the pump end thereof.
- Fig. 2 is a central sectional view through the unit, a portion of the rotor being shown in elevation.
- Fig. 3 is a slightly enlarged side elevation of the impeller member with one fan removed to show other parts of that member in greater detail.
- H indicates the pump housing, II the connector housing, I2 the spanning housing and I3 the motor end housing. Same may be of suitable material. ⁇ casings H and ill are secured together, with gasket M there between, by screw bolts l5, see Fig. 1.
- Housing II at its opposite end is grooved at H and end housing I3 is similarly grooved on its adjacent end as at l3 and drain holes ll and I3 may be included in housings H and [3 mentary tongue portions grooves I l and I3.
- housing l2 Carried by the housing l2 are the field coils [6 of a single phase induction type motor. The leads thereto are omitted for clearness. Elongated screw bolts, not shown, bear upon and pass through housing I3, pass between the field coils and screw into housing I l.
- the several housings are rigidly secured together and the only openings are vent and drain holes II and l3 for inlet l1 and outlet l8 of pump housing H), are connected respectively by suitable piping to a source of liquid and a liquid receiving device.
- housing I0 In this housing I0 is the impeller I9 keyed as at to the shouldered and threaded end 2
- Housing II at the impeller adjacent end thereof includes a partition 24 terminating in an elon-' gated bearing 25 which supports a carbon sleeve 26 shouldered at 2'! that rotatably supports shaft 22 shouldered at 28.
- Bearing 25 is enlarged in the pump end thereof as at 29 and seated therein, and associated with shoulder 30 of said shaft is a seal 3 I.
- Housing ll includes bosses 32 and same have included therein bores 33 parallel to the shaft. These bores are open at opposite ends. The pump ends are enlarged as at 34 to provide seats for screens 35. Thus the rotor chamber, except for screen protection, is in free communication with the pump chamber at all times. Thus scale, grit etc. cannot gain access to the rotor chamber but the liquid 35 is free to circulate in and to and through the rotor chamber.
- the pump impeller l9 includes two end plates 36 pinned as at 31 or the like to a central casting 38. Each plate has an outwardly directed rim or flange 39 and the body portion is dished outwardly as at 40 and has a central opening 4
- the casting 38 has a short hub portion 42 and the same from opposite ends is fiared and outwardly directed toward l2 for seating in a median plane as at 43. Integral therewith and projecting endwise therefrom and outwardly with reference to the impeller periphery are he arcuately arranged curved vanes 44 which, at their side edges, bear against the plates l9 aforesaid.
- This pump is of balanced type so that axial thrust in any one direction is eliminated which obviously reduces to a minimum or eliminates shaft end play.
- end casting l3 includes the inwardly directed boss 45 socketed as at 46 to take a carbon sleeve 41 flanged at 48.
- Shaft 22 is shouldered at 49 to bear on flange 48 and end 50 is rotatably supported in sleeve 41.
- the rotor carried by the shaft in the housing provided rotor chamber includes end plate portions 52 and laminations 53 suitably secured together. As illustrated the periphery of the laminations are notched as at 54 and same are progressively ofiset annularly, such producing inclined grooves 55 which are metal filled as at 56. This rotor is suitably secured to the shaft 22 and same constitutes one piece, as it were.
- metallic sleeve 51 which preferably is of substantially non-magnetic stainless steel.
- This tube or sleeve is extended as at 51 and 5'1 and the respective ends are turned outwardly as at 57.
- the sleeves 58 Interposed between the field or stator and such flanges 57 are the sleeves 58 which stiffen and reinforce the sleeve 51 and assist in location of the field structure for satisfactory motor operation.
- the motor end housing is is annular grooved at B to take gasket 59 and the adjacent ends of sleeves 51 and 58.
- the housing II is grooved at H to take gasket 60 and the adjacent ends of sleeves 57 and 58.
- the motor will be of cast copper and chrome plated to prevent rusting or corrosion and consequent operational failure.
- the motor stator preferably is of cast copper.
- the shaft may be of hardened, ground and polished steel and if desired metal plated at the bearing portions thereof.
- an electric motor driven pump of the single cavity effect type having in spaced relation a rotor and an impeller, a common shaft, an open end housing for the motor and an open end housing for the impeller, the housing open ends confronting each other the combination therewith of a single partition between said housings and forming a closure for the open end of each of the housings, said partition having a central bore therethrough, bearing means in the bore for rotatably supporting the shaft between the rotor and impeller thereon, the partition being elongated concentrically with respect to and spaced from said shaft and having spaced exterior flanges disposed contiguous to the housings, and means rigidly securing each flange to its contiguous housing, the elongated portion of the partition having ports therethrough contiguous to the flanges and communicating at opposite ends with the pump and rotor chambers in said housings.
Description
6 x mm %M Z K 7 m? a m WK. W 2 WV L. R. PETERS smcu: CAVITY TYPE MOTOR-DRIVEN PUMP Filed Jan. 19, 1946 Aug. 1, 1950 Patented Aug. 1, 1950 SINGLE CAVITY TYPE MOTOR-DRIVEN PUMP Layman R. Peters, Peru, Ind.
Application January 19, 1946, Serial No. 642,315
'2 Claims. 1
This invention relates to a motor driven pump The chief object of this invention is to provide such a unit wherein simplicity is of the highest order, operational wear is materially reduced, and operational failure is substantially eliminated, and such a unit furthermore can be easily and economically produced, readily lending itself to mass production and facilitating inspection and repairs when necessary.
One chief feature of this invention resides in what might be termed a single cavity type unit, that is, one wherein the motor rotor is exposed to the fluid handled by the pump.
Another chief feature of the invention resides in arrangement of the rotating parts so that all are enclosed, thereby eliminating the necessity for exterior glands and the like.
Another feature of the invention resides in the internal communication of the so-called "single" cavity unit whereby, regardless of unit positioning, the cavity is always exposed to the fluid handled by the pump.
Still a further feature of the invention resides in the protection provided to prevent scale jamming of the rotor etc. Other objects and features of the invention will be set forth more fully hereinafter.
The full nature of the invention will be understood from the accompanying drawings and the following description and'claims:
In the drawings Fig. 1 is an end elevation of the unit embodying the invention and of the pump end thereof.
Fig. 2 is a central sectional view through the unit, a portion of the rotor being shown in elevation.
Fig. 3 is a slightly enlarged side elevation of the impeller member with one fan removed to show other parts of that member in greater detail.
In Fig. 2 of the drawings, H] indicates the pump housing, II the connector housing, I2 the spanning housing and I3 the motor end housing. Same may be of suitable material. {casings H and ill are secured together, with gasket M there between, by screw bolts l5, see Fig. 1.
Housing II at its opposite end is grooved at H and end housing I3 is similarly grooved on its adjacent end as at l3 and drain holes ll and I3 may be included in housings H and [3 mentary tongue portions grooves I l and I3.
Carried by the housing l2 are the field coils [6 of a single phase induction type motor. The leads thereto are omitted for clearness. Elongated screw bolts, not shown, bear upon and pass through housing I3, pass between the field coils and screw into housing I l.
In-the aforesaid manner by means of screw bolts l and those last mentioned, the several housings are rigidly secured together and the only openings are vent and drain holes II and l3 for inlet l1 and outlet l8 of pump housing H), are connected respectively by suitable piping to a source of liquid and a liquid receiving device. The inlet discharges to the impeller at throat I! and liquid is discharged from the impeller at throat l8 and these are juxtapositioned to each other whereby the impeller subjected liquid traverses approximately 300 or so through the pump.
In this housing I0 is the impeller I9 keyed as at to the shouldered and threaded end 2| of shaft 22 and retained on the latter by nut 23. Housing II at the impeller adjacent end thereof, includes a partition 24 terminating in an elon-' gated bearing 25 which supports a carbon sleeve 26 shouldered at 2'! that rotatably supports shaft 22 shouldered at 28. Bearing 25 is enlarged in the pump end thereof as at 29 and seated therein, and associated with shoulder 30 of said shaft is a seal 3 I.
This seal for reasons apparent hereinafter, need not be of fluid type character but only of a character to prevent scale, grit, etc. working from the pump chamber to bearing 25, and injuring same or the shaft 22. Housing ll includes bosses 32 and same have included therein bores 33 parallel to the shaft. These bores are open at opposite ends. The pump ends are enlarged as at 34 to provide seats for screens 35. Thus the rotor chamber, except for screen protection, is in free communication with the pump chamber at all times. Thus scale, grit etc. cannot gain access to the rotor chamber but the liquid 35 is free to circulate in and to and through the rotor chamber.
The pump impeller l9, see Figs. 2 and 3, includes two end plates 36 pinned as at 31 or the like to a central casting 38. Each plate has an outwardly directed rim or flange 39 and the body portion is dished outwardly as at 40 and has a central opening 4| therein. The casting 38 has a short hub portion 42 and the same from opposite ends is fiared and outwardly directed toward l2 for seating in a median plane as at 43. Integral therewith and projecting endwise therefrom and outwardly with reference to the impeller periphery are he arcuately arranged curved vanes 44 which, at their side edges, bear against the plates l9 aforesaid. This pump, obviously, is of balanced type so that axial thrust in any one direction is eliminated which obviously reduces to a minimum or eliminates shaft end play.
Reference will now be had more particularly to Fig. 2 with reference to additional motor disclosure. Therein end casting l3 includes the inwardly directed boss 45 socketed as at 46 to take a carbon sleeve 41 flanged at 48. Shaft 22 is shouldered at 49 to bear on flange 48 and end 50 is rotatably supported in sleeve 41.
The rotor carried by the shaft in the housing provided rotor chamber includes end plate portions 52 and laminations 53 suitably secured together. As illustrated the periphery of the laminations are notched as at 54 and same are progressively ofiset annularly, such producing inclined grooves 55 which are metal filled as at 56. This rotor is suitably secured to the shaft 22 and same constitutes one piece, as it were.
Enveloping this rotor and in close proximity thereto is metallic sleeve 51 which preferably is of substantially non-magnetic stainless steel. This tube or sleeve is extended as at 51 and 5'1 and the respective ends are turned outwardly as at 57. Interposed between the field or stator and such flanges 57 are the sleeves 58 which stiffen and reinforce the sleeve 51 and assist in location of the field structure for satisfactory motor operation.
The motor end housing is is annular grooved at B to take gasket 59 and the adjacent ends of sleeves 51 and 58. Similarly the housing II is grooved at H to take gasket 60 and the adjacent ends of sleeves 57 and 58. When the elongated screw bolts are suitably screwed home the rotor chamber is fluid sealed from the stator chamber portion. Thus the electrical connections are all protected from the fluid.
Should any liquid work through the sleeve sealed connections last mentioned it will, no matter how the unit be mounted, fiow toward the ridge or ridges ll and/or 5 and waste through opening or openings II and/or l3 before it can affect the stator windings or electrical connections.
Preferably the motor will be of cast copper and chrome plated to prevent rusting or corrosion and consequent operational failure. The motor stator preferably is of cast copper. The shaft may be of hardened, ground and polished steel and if desired metal plated at the bearing portions thereof.
The foregoing structure obviously lends itself to mass production methods of fabrication, ease of assembly and ease of disassembly for inspection and repair purposes. Observe in Fig. 2 that when the pump housing is uncoupled from the housing II at bolts l5, the entire motor unit and impeller 19 can be detached for impeller replacement if necessary If motor repair is necessary .4 either the operation previously described can be eflected for rotor repair etc. plus the following or only that to be described when stator repair only is required. This operation is to remove the motor housing screw bolts and then pull axially on the motor end housing l3 and then on housing l2. The rotor can be completely removed or disassembled by finally removing impeller l9 from the shaft.
While the invention has been illustrated and described in great detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character.
The several modifications described herein, as well as others which will readily suggest themselves to persons skilled in this art, all are considered to be within the broad scope of the invention, reference being had to the appended claims.
The invention claimed is:
1. In an electric motor driven pump of the single cavity effect type having in spaced relation a rotor and an impeller, a common shaft, an open end housing for the motor and an open end housing for the impeller, the housing open ends confronting each other the combination therewith of a single partition between said housings and forming a closure for the open end of each of the housings, said partition having a central bore therethrough, bearing means in the bore for rotatably supporting the shaft between the rotor and impeller thereon, the partition being elongated concentrically with respect to and spaced from said shaft and having spaced exterior flanges disposed contiguous to the housings, and means rigidly securing each flange to its contiguous housing, the elongated portion of the partition having ports therethrough contiguous to the flanges and communicating at opposite ends with the pump and rotor chambers in said housings.
2. A pump as defined by claim 1 wherein 0pposite ends of the partition bore terminate in annular flanges extending toward the housings, the pump housing directed flange extending into the pump housing.
' LAYMAN R. PETERS.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US642315A US2517233A (en) | 1946-01-19 | 1946-01-19 | Single cavity type motor-driven pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US642315A US2517233A (en) | 1946-01-19 | 1946-01-19 | Single cavity type motor-driven pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US2517233A true US2517233A (en) | 1950-08-01 |
Family
ID=24576089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US642315A Expired - Lifetime US2517233A (en) | 1946-01-19 | 1946-01-19 | Single cavity type motor-driven pump |
Country Status (1)
Country | Link |
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US (1) | US2517233A (en) |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2636442A (en) * | 1950-04-08 | 1953-04-28 | Mechanisms Company | Centrifugal pump |
US2657322A (en) * | 1950-05-18 | 1953-10-27 | Frank K Bennie | Induction motor with sealed rotor |
US2684033A (en) * | 1949-12-30 | 1954-07-20 | Barnes Mfg Co | Centrifugal pump |
US2698911A (en) * | 1950-11-30 | 1955-01-04 | Edward J Schaefer | Submersible motor construction |
US2713311A (en) * | 1949-12-06 | 1955-07-19 | Howard T White | Motor driven pump |
US2725012A (en) * | 1952-03-22 | 1955-11-29 | Mcgraw Electric Co | Motor-pump unit |
US2734459A (en) * | 1956-02-14 | zimsky | ||
US2741990A (en) * | 1952-11-26 | 1956-04-17 | Howard T White | Motor driven pumps |
US2743673A (en) * | 1950-08-01 | 1956-05-01 | American Crucible Products Com | Pump-motor unit |
US2756680A (en) * | 1952-12-11 | 1956-07-31 | Rutschi Karl | Electric motor-driven pump |
US2762311A (en) * | 1952-10-01 | 1956-09-11 | Zenith Engineering Corp | Motor driven pumps |
US2777963A (en) * | 1953-11-17 | 1957-01-15 | Ami Ind Inc | Sealed washing machine motor |
US2805817A (en) * | 1955-04-14 | 1957-09-10 | Friggeri Luis | Armored compressor for refrigerating equipment |
US2887061A (en) * | 1954-07-01 | 1959-05-19 | Westinghouse Electric Corp | Totally enclosed canned motor pump |
DE1057879B (en) * | 1953-12-11 | 1959-05-21 | Hayward Tyler And Company Ltd | Motor pump unit for pumping hot fluids |
US2931307A (en) * | 1957-12-04 | 1960-04-05 | Gorman Rupp Ind Inc | Enclosed rotor construction for motor pump unit |
US2939399A (en) * | 1956-02-23 | 1960-06-07 | Rutschi Karl | Pump |
US2942555A (en) * | 1957-04-15 | 1960-06-28 | Rinaldo F Pezzillo | Combination pump and motor |
US2965038A (en) * | 1957-06-03 | 1960-12-20 | Lucas Industries Ltd | Rotary fuel pumps |
US2972308A (en) * | 1957-03-12 | 1961-02-21 | Thompson Ramo Wooldridge Inc | Sealed stator submerged electric fuel pump |
US2974856A (en) * | 1956-10-31 | 1961-03-14 | Gen Electric | Fluid fuel burner assembly |
US3005415A (en) * | 1958-11-12 | 1961-10-24 | E M B Elektromotorenbau A G | Circulating pump |
US3062599A (en) * | 1959-11-27 | 1962-11-06 | Gen Electric | Carbon bearings with molybdenum disulphide inserts |
US3096021A (en) * | 1958-12-17 | 1963-07-02 | Rund Mfg Company | Hot water circulating system |
US3164097A (en) * | 1961-02-13 | 1965-01-05 | Nicoll Walter Lyon Gordon | Pumps |
US3228341A (en) * | 1963-08-21 | 1966-01-11 | Taco Inc | Pump |
US3284650A (en) * | 1964-01-16 | 1966-11-08 | Franz Frederick | Motor having bearing chambers in which the oil is retained by meniscus forces |
US3539851A (en) * | 1968-10-11 | 1970-11-10 | Reliance Electric Co | Dynamoelectric machine stator mounting |
US4181475A (en) * | 1977-04-29 | 1980-01-01 | Itt Industries, Inc. | Oil housing |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB139277A (en) * | 1919-02-12 | 1920-03-04 | Cecil Henry Reid | Improvements in and relating to electric motors for operating pumps and for other purposes |
GB141467A (en) * | 1919-02-28 | 1920-04-22 | Paul Francis Wheler Bush | Improved means for pumping liquids |
US1908427A (en) * | 1930-10-09 | 1933-05-09 | Irving C Jennings | Motor driven centrifugal pump |
US1973070A (en) * | 1930-01-08 | 1934-09-11 | Guy L Hess | Pump |
US1991761A (en) * | 1933-09-28 | 1935-02-19 | Ingersoll Rand Co | Pumping mechanism |
US2274274A (en) * | 1939-03-17 | 1942-02-24 | Albert R Pexxillo | Fluid pump and metering device |
US2301063A (en) * | 1941-07-12 | 1942-11-03 | Ingersoll Rand Co | Pumping mechanism |
-
1946
- 1946-01-19 US US642315A patent/US2517233A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB139277A (en) * | 1919-02-12 | 1920-03-04 | Cecil Henry Reid | Improvements in and relating to electric motors for operating pumps and for other purposes |
GB141467A (en) * | 1919-02-28 | 1920-04-22 | Paul Francis Wheler Bush | Improved means for pumping liquids |
US1973070A (en) * | 1930-01-08 | 1934-09-11 | Guy L Hess | Pump |
US1908427A (en) * | 1930-10-09 | 1933-05-09 | Irving C Jennings | Motor driven centrifugal pump |
US1991761A (en) * | 1933-09-28 | 1935-02-19 | Ingersoll Rand Co | Pumping mechanism |
US2274274A (en) * | 1939-03-17 | 1942-02-24 | Albert R Pexxillo | Fluid pump and metering device |
US2301063A (en) * | 1941-07-12 | 1942-11-03 | Ingersoll Rand Co | Pumping mechanism |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734459A (en) * | 1956-02-14 | zimsky | ||
US2713311A (en) * | 1949-12-06 | 1955-07-19 | Howard T White | Motor driven pump |
US2684033A (en) * | 1949-12-30 | 1954-07-20 | Barnes Mfg Co | Centrifugal pump |
US2636442A (en) * | 1950-04-08 | 1953-04-28 | Mechanisms Company | Centrifugal pump |
US2657322A (en) * | 1950-05-18 | 1953-10-27 | Frank K Bennie | Induction motor with sealed rotor |
US2743673A (en) * | 1950-08-01 | 1956-05-01 | American Crucible Products Com | Pump-motor unit |
US2698911A (en) * | 1950-11-30 | 1955-01-04 | Edward J Schaefer | Submersible motor construction |
US2725012A (en) * | 1952-03-22 | 1955-11-29 | Mcgraw Electric Co | Motor-pump unit |
US2762311A (en) * | 1952-10-01 | 1956-09-11 | Zenith Engineering Corp | Motor driven pumps |
US2741990A (en) * | 1952-11-26 | 1956-04-17 | Howard T White | Motor driven pumps |
US2756680A (en) * | 1952-12-11 | 1956-07-31 | Rutschi Karl | Electric motor-driven pump |
US2777963A (en) * | 1953-11-17 | 1957-01-15 | Ami Ind Inc | Sealed washing machine motor |
DE1057879B (en) * | 1953-12-11 | 1959-05-21 | Hayward Tyler And Company Ltd | Motor pump unit for pumping hot fluids |
US2887061A (en) * | 1954-07-01 | 1959-05-19 | Westinghouse Electric Corp | Totally enclosed canned motor pump |
US2805817A (en) * | 1955-04-14 | 1957-09-10 | Friggeri Luis | Armored compressor for refrigerating equipment |
US2939399A (en) * | 1956-02-23 | 1960-06-07 | Rutschi Karl | Pump |
US2974856A (en) * | 1956-10-31 | 1961-03-14 | Gen Electric | Fluid fuel burner assembly |
US2972308A (en) * | 1957-03-12 | 1961-02-21 | Thompson Ramo Wooldridge Inc | Sealed stator submerged electric fuel pump |
US2942555A (en) * | 1957-04-15 | 1960-06-28 | Rinaldo F Pezzillo | Combination pump and motor |
US2965038A (en) * | 1957-06-03 | 1960-12-20 | Lucas Industries Ltd | Rotary fuel pumps |
US2931307A (en) * | 1957-12-04 | 1960-04-05 | Gorman Rupp Ind Inc | Enclosed rotor construction for motor pump unit |
US3005415A (en) * | 1958-11-12 | 1961-10-24 | E M B Elektromotorenbau A G | Circulating pump |
US3096021A (en) * | 1958-12-17 | 1963-07-02 | Rund Mfg Company | Hot water circulating system |
US3062599A (en) * | 1959-11-27 | 1962-11-06 | Gen Electric | Carbon bearings with molybdenum disulphide inserts |
US3164097A (en) * | 1961-02-13 | 1965-01-05 | Nicoll Walter Lyon Gordon | Pumps |
US3228341A (en) * | 1963-08-21 | 1966-01-11 | Taco Inc | Pump |
US3284650A (en) * | 1964-01-16 | 1966-11-08 | Franz Frederick | Motor having bearing chambers in which the oil is retained by meniscus forces |
US3539851A (en) * | 1968-10-11 | 1970-11-10 | Reliance Electric Co | Dynamoelectric machine stator mounting |
US4181475A (en) * | 1977-04-29 | 1980-01-01 | Itt Industries, Inc. | Oil housing |
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