Patent US3298315A successfully refreshed from Google Patents.
US3298315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Series connected pumping system
Assignee: Outboard Marine Corp
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Filing: 1964-11-05
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Granted: 1967-01-17
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Expires: 1984-11-05
Abstract
No abstract record available.
Inventors
- 👤 Finn T Irgens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:11
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/12; F; F16; F16N; F16N13/00; F16N13/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A ROTARY GEAR PUMP COMPRISING A PUMP HOUSING HAVING INLET AND OUTLET OPENINGS, A FIRST GEAR, MEANS MOUNTING SAID FIRST GEAR FOR ROTATION IN SAID HOUSING, A SECOND GEAR, A THIRD GEAR, MEANS MOUNTING SAID SECOND AND THIRD GEARS IN SAID HOUSING FOR ROTATION IN MESHING ENGAGEMENT WITH SAID FIRST GEAR, AND MEANS ON SAID FIRST, SECOND, AND THIRD GEARS AND ON SAID HOUSING AFFORDING PERIODIC FLUID PUMPING OPERATION FROM SAID INLET TO SAID OUTLET IN RESPONSE TO GEAR ROTATION, AND RELATIVELY FREE FLUID PASSAGE BETWEEN SAID INLET AND SAID OUTLET BETWEEN PUMPING OPERATIONS.
Claim 2
Dependent Claim
94 words
A ROTARY GEAR PUMP COMPRISING A PUMP HOUSING HAVING INLET AND OUTLET OPENINGS, A FIRST GEAR, MEANS MOUNTING SAID FIRST GEAR FOR ROTATION IN SAID HOUSING, A SECOND GEAR, A THIRD GEAR, MEANS MOUNTING SAID SECOND AND THIRD GEARS IN SAID HOUSING FOR ROTATION IN MESHING ENGAGEMENT WITH SAID FIRST GEAR, AND MEANS ON SAID FIRST, SECOND, AND THIRD GEARS AND ON SAID HOUSING AFFORDING PERIODIC FLUID PUMPING OPERATION FROM SAID INLET TO SAID OUTLET IN RESPONSE TO GEAR ROTATION, AND RELATIVELY FREE FLUID PASSAGE BETWEEN SAID INLET AND SAID OUTLET BETWEEN PUMPING OPERATIONS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |