Patent US3177666A successfully refreshed from Google Patents.
US3177666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic transmission
Assignee: Sundstrand Corp
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Filing: 1964-01-16
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Granted: 1965-04-13
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Expires: 1984-01-16
Abstract
No abstract record available.
Inventors
- 👤 Donald B Reinke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:47
CPC Classifications
F; F16; F16H; F16H39/00; F16H39/04; F16H39/06; F16H39/08; F16H39/10; F16H39/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CENTRIFUGAL PUMP COMPRISING A ROTATABLY MOUNTED MEMBER HAVING A FLAT RADIAL SURFACE HAVING A SEMI-TOROIDAL GROOVE THEREIN, A PLURALITY OF BLADES EXTENDING TRANSVERSELY OF SAID GROOVE, MEANS FOR DRIVING SAID ROTATABLY MOUNTED MEMBER, A PLATE HAVING ONE FACE THEREOF MOUNTED ADJACENT TO AND CONTACTING SAID FLAT RADIAL SURFACE, SAID PLATE HAVING A SEMI-TOROIDAL PASSAGE IN SAID FACE COMPLEMENTARY TO SAID GROOVE OVER A FIRST PORTION OF THE LENGTH OF SAID PASSAGE, A SECOND PORTION OF SAID SEMI-TOROIDAL PASSAGE EXTENDING AWAY FROM SAID GROOVE AND SAID ROTATABLY MOUNTED MEMBER AND FORMING PUMP INLET MEANS, AND A PUMP OUTLET PORT IN SAID SEMI-TOROIDAL PASSAGE SPACED FROM SAID INLET MEANS.
Claim 2
Dependent Claim
108 words
A CENTRIFUGAL PUMP COMPRISING A ROTATABLY MOUNTED MEMBER HAVING A FLAT RADIAL SURFACE HAVING A SEMI-TOROIDAL GROOVE THEREIN, A PLURALITY OF BLADES EXTENDING TRANSVERSELY OF SAID GROOVE, MEANS FOR DRIVING SAID ROTATABLY MOUNTED MEMBER, A PLATE HAVING ONE FACE THEREOF MOUNTED ADJACENT TO AND CONTACTING SAID FLAT RADIAL SURFACE, SAID PLATE HAVING A SEMI-TOROIDAL PASSAGE IN SAID FACE COMPLEMENTARY TO SAID GROOVE OVER A FIRST PORTION OF THE LENGTH OF SAID PASSAGE, A SECOND PORTION OF SAID SEMI-TOROIDAL PASSAGE EXTENDING AWAY FROM SAID GROOVE AND SAID ROTATABLY MOUNTED MEMBER AND FORMING PUMP INLET MEANS, AND A PUMP OUTLET PORT IN SAID SEMI-TOROIDAL PASSAGE SPACED FROM SAID INLET MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |