Patent US3881839A successfully refreshed from Google Patents.
US3881839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel pump
Assignee: Motors Liquidation Co
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Filing: 1974-01-07
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Granted: 1975-05-06
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Expires: 1994-01-07
Abstract
Abstract A peripheral type fluid pump adapted to be driven by a small electric motor and the complete assembly to be inserted through the filler neck of a fuel tank for pumping fuel therefrom, including a housing of two parts comprising a casing member and a cover member which together define a circular raceway therebetween. An impeller having radially extending vane portions and a central hub portion is adapted to be supported for rotation in the raceway with the vanes extending into an annular channel through which fluid passes from an inlet in the cover member to an outlet in the casing member. Abutment means formed on the casing and cover members between the inlet and outlet guide fluid flow from the inlet through the annular passage to the outlet. Vaporous fuel is discharged from the annular passageway back into the fuel tank by two vent openings in the cover member and the abutment means on the casing member adjacent the outlet divides fluid flow into an outer fluid path leading to the outlet and an inner fluid path which is intercepted by an inclined wedge or wall portion to direct vaporous fuel back through the vanes toward the inlet and therefrom through the annular passage to the aforesaid vent openings.
Inventors
- 👤 Daniel C Macmanus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:52
CPC Classifications
F; F04; F04D; F04D5/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
340 words
In a peripheral fluid pump; the combination of a housing formed in two parts, including a cylindrical casing member and a cylindrical cover member which together define a raceway with a radially outward annular fluid passage means and having confronting side and perpheral stripper abutments in the annular fluid passage means; inlet and outlet ports in said casing member and said cover member, respectively, and positioned on opposite sides of the side peripheral stripper abutments and communicating with the annular fluid passage means to define a fluid flow path from said inlet port to said outlet port; an impeller within the raceway including a hub portion provided with a series of radially extending vanes attached thereto at a base portion; said hub portion having a central drive shaft guideway and drive slots therein spaced circumferentially around the guideway; the casing member having at least two vent openings communicating with the annular fluid passage means near the base portion of the vanes; the first of said vent openings being positioned diametrically opposite from said inlet port and the other vent opening being spaced in a circumferential direction downstream from said inlet port and upstream from said first vent opening whereby a portion of vaporous fluid in said fluid passage means passes through said other vent opening and another portion subsequently passes through said first vent opening; said side stripper abutment adjacent said outlet and on said cover member having partition means extending upstream from said outlet and from said stripper abutment to radially separate fluid flow in said annular fluid passage means into an inward stream adjacent to said base portion of said vanes and a radially outward stream therefrom; said outlet port being located radially outward from said partition to mostly discharge said radially outward stream of fluid in said annular fluid passage means; said side stripper abutment having inclined fluid directing means located radially inward from said partition means for diverting the inner stream of fluid back between said vanes for discharge of vaporous fluid through said vent openings.
Claim 2
Dependent Claim
340 words
In a peripheral fluid pump; the combination of a housing formed in two parts, including a cylindrical casing member and a cylindrical cover member which together define a raceway with a radially outward annular fluid passage means and having confronting side and perpheral stripper abutments in the annular fluid passage means; inlet and outlet ports in said casing member and said cover member, respectively, and positioned on opposite sides of the side peripheral stripper abutments and communicating with the annular fluid passage means to define a fluid flow path from said inlet port to said outlet port; an impeller within the raceway including a hub portion provided with a series of radially extending vanes attached thereto at a base portion; said hub portion having a central drive shaft guideway and drive slots therein spaced circumferentially around the guideway; the casing member having at least two vent openings communicating with the annular fluid passage means near the base portion of the vanes; the first of said vent openings being positioned diametrically opposite from said inlet port and the other vent opening being spaced in a circumferential direction downstream from said inlet port and upstream from said first vent opening whereby a portion of vaporous fluid in said fluid passage means passes through said other vent opening and another portion subsequently passes through said first vent opening; said side stripper abutment adjacent said outlet and on said cover member having partition means extending upstream from said outlet and from said stripper abutment to radially separate fluid flow in said annular fluid passage means into an inward stream adjacent to said base portion of said vanes and a radially outward stream therefrom; said outlet port being located radially outward from said partition to mostly discharge said radially outward stream of fluid in said annular fluid passage means; said side stripper abutment having inclined fluid directing means located radially inward from said partition means for diverting the inner stream of fluid back between said vanes for discharge of vaporous fluid through said vent openings.
Claim 3
Dependent Claim
361 words
In a peripheral fluid pump; the combination of a housing formed in two parts, including a cylindrical casing member and a cylindrical cover member which together define a raceway with a radially outward annular fluid passage means and having confronting side and peripheral stripper abutments in the annular fluid passage means; inlet and outlet ports in said casing member and said cover member, respectively, and positioned on opposite sides of the side peripheral stripper abutments and communicating with the annular fluid passage means to define a fluid flow path from said inlet port to said outlet port; an impeller within the raceway including a hub portion provided with a series of radially extending vanes attached thereto at a base portion; said hub portion having a central drive shaft guideway and drive slots therein spaced circumferentially around the guideway; the casing member having at least two vent openings communicating with the annular fluid passage means near the base portion of the vanes; the first of said vEnt openings being positioned diametrically opposite from said inlet port and the other vent opening being spaced in a circumferential direction downstream from said inlet port and upstream from said first vent opening whereby a portion of vaporous fluid in said fluid passge means passes through said other vent opening and another portion subsequently passes through said first vent opening; said side stripper abutment adjacent said outlet and on said cover member having a partition wall means extending upstream from said outlet and from said side stripper abutment into said annular fluid passage means to radially separate fluid flow in said annular fluid passage means into an inner stream adjacent to said base portion of said vanes and a radially outward stream therefrom; said outlet port being located radially outward from said partition to mostly discharge said radially outward stream of fluid in said annular fluid passage means; said side stripper abutment having inclined wall means which forms a ramp radially inward from said partition to direct the inner stream of fluid axially back through the vanes whereby vaporous fluids therein flow to said vent openings for exit discharge therethrough from said annular fluid passage means.
Claim 4
Dependent Claim
361 words
In a peripheral fluid pump; the combination of a housing formed in two parts, including a cylindrical casing member and a cylindrical cover member which together define a raceway with a radially outward annular fluid passage means and having confronting side and peripheral stripper abutments in the annular fluid passage means; inlet and outlet ports in said casing member and said cover member, respectively, and positioned on opposite sides of the side peripheral stripper abutments and communicating with the annular fluid passage means to define a fluid flow path from said inlet port to said outlet port; an impeller within the raceway including a hub portion provided with a series of radially extending vanes attached thereto at a base portion; said hub portion having a central drive shaft guideway and drive slots therein spaced circumferentially around the guideway; the casing member having at least two vent openings communicating with the annular fluid passage means near the base portion of the vanes; the first of said vEnt openings being positioned diametrically opposite from said inlet port and the other vent opening being spaced in a circumferential direction downstream from said inlet port and upstream from said first vent opening whereby a portion of vaporous fluid in said fluid passge means passes through said other vent opening and another portion subsequently passes through said first vent opening; said side stripper abutment adjacent said outlet and on said cover member having a partition wall means extending upstream from said outlet and from said side stripper abutment into said annular fluid passage means to radially separate fluid flow in said annular fluid passage means into an inner stream adjacent to said base portion of said vanes and a radially outward stream therefrom; said outlet port being located radially outward from said partition to mostly discharge said radially outward stream of fluid in said annular fluid passage means; said side stripper abutment having inclined wall means which forms a ramp radially inward from said partition to direct the inner stream of fluid axially back through the vanes whereby vaporous fluids therein flow to said vent openings for exit discharge therethrough from said annular fluid passage means.
References Cited (Backward Citations)
US3418991A
Cited
US3676025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |