Patent US3088523A successfully refreshed from Google Patents.
US3088523A
Expired / Lapsed
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Marine engine control system with variable pitch propeller
Assignee: Nordberg Manufacturing Co
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Filing: 1960-04-11
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Granted: 1963-05-07
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Expires: 1980-04-11
Abstract
No abstract record available.
Inventors
- 👤 Richard D Smalley
- 👤 Warren H Krogstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:25
CPC Classifications
B; B63; B63H; B63H3/00; B63H3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A CONTROL SYSTEM FOR AN ENGINE DRIVING A VARIABLE PITCH PROPELLER, INCLUDING MEANS FOR SUPPLYING FUEL TO THE ENGINE IN QUANTITIES IN ACCORDANCE WITH ANY DESIRED SPEED AT VARYING LOAD REQUIREMENTS, MEANS FOR VARYING THE PITCH OF THE PROPELLER, MEANS FOR AUTOMATICALLY VARYING THE PITCH OF THE PROPELLER UPON A CHANGE IN LOAD REQUIREMENT AT A PARTICULAR FUEL SETTING OVER ONLY A PORTION OF THE LOAD RANGE TO MAINTAIN CONSTANT ENGINE SPEED WITH A CONSTANT QUANTITY OF BEING SUPPLIED TO THE ENGINE, AND MEANS FOR VARYING THE AMOUNT OF FUEL BEING SUPPLIED OVER THE
Claim 2
Dependent Claim
94 words
A CONTROL SYSTEM FOR AN ENGINE DRIVING A VARIABLE PITCH PROPELLER, INCLUDING MEANS FOR SUPPLYING FUEL TO THE ENGINE IN QUANTITIES IN ACCORDANCE WITH ANY DESIRED SPEED AT VARYING LOAD REQUIREMENTS, MEANS FOR VARYING THE PITCH OF THE PROPELLER, MEANS FOR AUTOMATICALLY VARYING THE PITCH OF THE PROPELLER UPON A CHANGE IN LOAD REQUIREMENT AT A PARTICULAR FUEL SETTING OVER ONLY A PORTION OF THE LOAD RANGE TO MAINTAIN CONSTANT ENGINE SPEED WITH A CONSTANT QUANTITY OF BEING SUPPLIED TO THE ENGINE, AND MEANS FOR VARYING THE AMOUNT OF FUEL BEING SUPPLIED OVER THE
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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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |