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Publication numberUS2318786 A
Publication typeGrant
Publication dateMay 11, 1943
Filing dateNov 5, 1940
Priority dateNov 5, 1940
Publication numberUS 2318786 A, US 2318786A, US-A-2318786, US2318786 A, US2318786A
InventorsKenneth Lannert, Korte Alfred C
Original AssigneeCarter Carburetor Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Centrifugal pump
US 2318786 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

M y11,1943. AQKWE m 2,318


Patented May 11, 1943 NITED STATES [PATENT OFFICE Alfred0.KorteandKennethLannert,8tLlnuis,

110., asaignors to Carter Carburetor 0011M- mstuliamo aoorporaflonofnelaware Application November 5, 194., Serial No. 364,848

iclahns. (q. m-s'n 'I'hisinvention relates to fuel pumpsand more particularly. to electrically driven defltflmll type I It is an object ofthe present invention to provide an improved pump of the above character adapted to operate submerged in the liquid to be It is a further obiect of the present invention to provide a novel inexpensive rotor structure forapumpoftheabovecharacter.

Other obiects and advantages will become ap-- parent upon reference to the following description and accomflmrins drawing. I

Fig. 1 is a vertical section of the pumpconstructed in accordance with our invention. l 'lg. 2isabottomplanview ofthe rotorre- V Numerals I and 2' indicate upper and lower sections of the pump housing'structure. These sections are provided with flanges la and lo and are attached in any suitable manner 'as with which is fitted into the upper housing section I. himp casing members 4 and I are provided with central openings II and i6, respectively, through which passes the rotor I. Opening II also provides a central fuel intake to the volute member 4. Circumferentially spaced fuel inlet ports ll through the wall of lower housing section 2 are providedv and a circular screen it guards these inlets. Motor brush structure is generally indicated at ll being supported in the lower housing section 2. A pump discharge passage is indicated at II which communicates with the groove 4.

In operation, fuel enters the inlet ports I! and flows into the spaces between the impeller blades as indicated by the arrows from whence it is thrown by centrifugalforce into the volute groove 4 and thence out. throughthe discharge screws (not shown). Fitted into the upper end of the lower section I is a pump'easing comprising a disk-like member 8 having a volute groove I formed therein and a disk-like cover member I. Journalled in the housing structure at i and 'I I is a vertical rotor generally indicated at l which comprises a shaft 0, a motor armature II, a pump impeller II, and a commutator it. The impeller ii is formed asanintegral part of a suitably mass of molded, dielectric material which extends around the armature through the interstices of the winding and downwardly into the shell-like commutator effectively bonding these parts together and to the shaft 0.

Thegeneralshapeofthismassmaybevariedas desired, in the present form,- however; it has been shaped to provide ample protection for the armature andtopresentasmoothoutersurface which willrotate submergedinaliqllld wltham'inimum amountof resistance. Itwillbe also understood thattheimpellermaybelocatedateitherendof theshaftifsodesiredinsteadofbetweenthearmatureandimpellerasinthepresentform. It'

istobefurther-understoodthatanyofthecommercial synthetic resins oran'! other non-con- 1 ducilngmaterialhavlng mltablephyslcalproper- .tieaandwhichmaybemoldedinaliquldorplasticstatemaybeusedtoformthismass.

with the above construction it willbe apparent that applicants have provided a compact, rigldelectricpumprotorhavlngamotor armature, a commutator. an impeller, and a shaft ilrmlybonded'togethsr.

Inthepresentformthsimpellerisprovlded bladesilasshowninl'lg.2whicharealso ormedasanintegralpartoftheinsulating mass.

llotoi'l leldstriicmrelslndlcatedatll' passage 2.;

The foregoing descri tion and accompanying drawing are intended to be illustrative and not ing laterally of said shaft to form a disc-shaped impeller.

2. In a centrifugal pump. a rotor including a shaft, an armature core and windings about said core. and a continuous cementitious dielectric mass surrounding said windings and bonding said parts as a unit upon said shaft, said mass including a projecting portion constructed and arranged to form an impeller.

3. In a centrifugal pump, a rotor including a shaft, an armature core and windings about said core. and a continuous cementitious dielectric mass surrounding said windings and bonding said partsasaunituponsaidshaft,saidmassextendinglaterallyof saidshaft indisc-like formats point spaced'from said core to provide an impeller element.

4. In a centrifugal pump, a rotor including a shaft, an armature core and windings about said core, and a continuous cementitious dielectric mass surrounding said windings and bonding said parts as a unit upon said shaft, said mass extend-v 8 laterally of said shaft in disc-like form at a point spaced from said core to provide an impeller element,-and being reduced in diameter to enclose insulated leads outward of said impeller.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2419159 *Dec 19, 1944Apr 15, 1947Pezzillo Albert RCombination pump-motor-heater
US2450137 *Dec 1, 1944Sep 28, 1948Smith Corp A OMultistage centrifugal pump
US2623186 *Mar 23, 1948Dec 23, 1952Bendix Aviat CorpEngine accessory for underwater operation
US2725012 *Mar 22, 1952Nov 29, 1955Mcgraw Electric CoMotor-pump unit
US2747513 *Jan 10, 1955May 29, 1956Atkinson Herbert JBilge pump
US2782720 *Oct 29, 1954Feb 26, 1957Gen ElectricSubmersible pump-motor
US2805626 *Jun 9, 1954Sep 10, 1957Lignelli William AUnitary motor and turbine pump
US2820914 *Aug 31, 1954Jan 21, 1958Gen ElectricDynamoelectric machine structures
US2846599 *Jan 23, 1956Aug 5, 1958Wetomore HodgesElectric motor components and the like and method for making the same
US2880323 *Jun 3, 1955Mar 31, 1959Phillips Petroleum CoDiffusion pump and mass spectrometer
US2897385 *Jul 1, 1957Jul 28, 1959Kango Electric Hammers LtdArmature winding connectors
US3034004 *Apr 24, 1958May 8, 1962Bbc Brown Boveri & CieHigh-duty insulation in sealed electric motors subjected to refrigerants, oils or the like
US3180267 *Jun 11, 1962Apr 27, 1965Gen Motors CorpPump-motor structures and assembly method
US4498024 *Apr 21, 1983Feb 5, 1985Regie Nationale Des Usines RenaultSynchronous electrodynamic machine with permanent magnets and cooled by a liquid
US4876492 *Feb 26, 1988Oct 24, 1989General Electric CompanyElectronically commutated motor driven apparatus including an impeller in a housing driven by a stator on the housing
U.S. Classification417/423.3, 310/88, 310/157, 310/43, 310/66, 415/217.1
International ClassificationF04D13/06
Cooperative ClassificationF04D13/0653
European ClassificationF04D13/06D