Patent US5273394A successfully refreshed from Google Patents.
US5273394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine pump
Assignee: Motors Liquidation Co
•
Filing: 1992-09-24
•
Granted: 1993-12-28
•
Expires: 2012-09-24
Abstract
Abstract A regenerative turbine fuel pump for motor vehicles including a flat disc-shaped impeller having radial vanes in an annular pump chamber, the pump having strippers in the pump chamber oriented obliquely relative to the direction of rotation of the vanes and inlet and discharge ports disposed generally at the apexes of wedge-shaped ends of the pump chamber grooves defined by the oblique sides of the strippers. The vanes are progressively covered and uncovered by the oblique sides of the strippers as the vanes enter and leave the confines of the strippers to attenuate pressure pulses and minimize audible tones associated with such pressure pulses.
Inventors
- 👤 Christopher J. Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:34
CPC Classifications
F; F04; F04D; F04D5/00; F04D5/002; F04D29/00; F04D29/66; F04D29/669; F04D5/007; F05; F05B; F05B2250/00; F05B2250/50; F05B2250/503
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
286 words
A regenerative turbine pump comprising: a housing, means on said housing defining a generally cylindrical cavity having a cylindrical wall and a first planar inside face and a second planar inside face, means defining a first annular groove in said first inside face and a second annular groove in said second inside face cooperating with said first annular groove and with said cylindrical wall in defining an annular pump chamber in said housing, a flat disc-shaped impeller rotatably supported on said housing having a periphery disposed in said annular pump chamber, means defining a plurality of vanes around the periphery of said impeller in said annular pump chamber, each of said vanes having a radial edge in a planar side of said flat impeller and an outer edge in the circumference of said impeller, means on said housing defining a first stripper in said first inside face interrupting said first annular groove and including a pair of sides extending obliquely relative to the direction of movement of said vanes so that said first annular groove has a pair of wedge-shaped ends, means on said housing defining a second stripper in said second inside face interrupting said second annular groove and including a pair of sides extending obliquely relative to the direction of movement of said vanes so that said second annular groove has a pair of wedge-shaped ends, and means on said housing defining an inlet port generally at the apex of one of said pair of wedge-shaped ends of one of said first and said second annular grooves and a discharge port generally at the apex of another one of said pair of wedge-shaped ends of one of said first and said second annular grooves.
Claim 2
Dependent Claim
286 words
A regenerative turbine pump comprising: a housing, means on said housing defining a generally cylindrical cavity having a cylindrical wall and a first planar inside face and a second planar inside face, means defining a first annular groove in said first inside face and a second annular groove in said second inside face cooperating with said first annular groove and with said cylindrical wall in defining an annular pump chamber in said housing, a flat disc-shaped impeller rotatably supported on said housing having a periphery disposed in said annular pump chamber, means defining a plurality of vanes around the periphery of said impeller in said annular pump chamber, each of said vanes having a radial edge in a planar side of said flat impeller and an outer edge in the circumference of said impeller, means on said housing defining a first stripper in said first inside face interrupting said first annular groove and including a pair of sides extending obliquely relative to the direction of movement of said vanes so that said first annular groove has a pair of wedge-shaped ends, means on said housing defining a second stripper in said second inside face interrupting said second annular groove and including a pair of sides extending obliquely relative to the direction of movement of said vanes so that said second annular groove has a pair of wedge-shaped ends, and means on said housing defining an inlet port generally at the apex of one of said pair of wedge-shaped ends of one of said first and said second annular grooves and a discharge port generally at the apex of another one of said pair of wedge-shaped ends of one of said first and said second annular grooves.
Claim 3
Dependent Claim
49 words
The turbine pump recited in claim 1 wherein: said inlet port is at the apex of one of said pair of wedge-shaped ends of said first annular groove, and said discharge port is at the apex of one of said pair of wedge-shaped ends of said second annular groove.
Claim 4
Dependent Claim
42 words
The turbine pump recited in claim 2 and further including: means defining a third stripper on said housing in said pump chamber interrupting said cylindrical wall and having a side extending obliquely relative to the direction of movement of said impeller vanes.
Claim 5
Dependent Claim
17 words
The turbine pump recited in claim 3 wherein said turbine pump is a motor vehicle fuel pump.
Claim 6
Dependent Claim
16 words
The turbine pump recited in claim 4 wherein said vanes on said impeller are open-style vanes.
References Cited (Backward Citations)
US1875419A
Cited
FR689067A
Cited
US2696789A
Cited
FR1071992A
Cited
FR1331429A
Cited
US3676025A
Cited
US3881839A
Cited
US3947149A
Cited
US4209284A
Cited
US4408952A
Cited
JPS57206795A
Cited
JPS62186095A
Cited
US4734008A
Cited
US5022830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-27 | 1997-06-28 | 1997-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-27 | 2001-06-28 | 2001-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-27 | 2005-06-28 | 2005-12-28 | $7700.00 | Window Closed / Lapsed |