Patent US3323504A successfully refreshed from Google Patents.
US3323504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine speed governor
Assignee: Tecumseh Products Co
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Filing: 1964-12-21
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Granted: 1967-06-06
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Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Paul F Jacobi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:52
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/67; A01D34/68; A01D34/6806; F; F02; F02B; F02B63/00; F02B63/02; F02B75/00; F02B75/007; F02D; F02D9/00; F02F; F02F1/00; F02F1/24; F02F1/26; F02F1/28; F02F1/30; F02F1/305; F02M; F02M35/00; F02M35/10; F02M35/1015; F02M35/1017; A01D2101/00; F02B75/02; F02B2075/022; F02B2075/025; F02B2075/027; F02B2275/00; F02B2275/22; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0228; F02D2700/023; F02D2700/0233
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
AN INTAKE PIPE FOR USE IN GOVERNING THE MAXIMUM SPEED OF AN INTERNAL COMBUSTION ENGINE OF THE RECIPROCATING PISTON TYPE COMPRISING A WALLED PASSAGEWAY FORMED WITH AN AIR INLET AT ONE END THEREOF AND A COMBUSTIBLE CHARGE OUTLET AT THE OTHER END THEREOF, FUEL METERING MEANS COMMUNICATING WITH SAID PASSAGEWAY INTERMEDIATE SAID INLET AND SAID OUTLET, THROTTLE MEANS IN SAID PASSAGEWAY TO VARY THE SPEED OF SAID ENGINE, SAID PASSAGEWAY HAVING A LENGTH BETWEEN SAID AIR INLET AND SAID CHARGE OUTLET SUBSTANTAILLY GREATER THAN FOUR TIMES ITS HYDRAULIC RADIUS SO THAT WALL FRICTION RESTRICTS FLOW OF SAID CHARGE AT A PREDETERMINED MAXIMUM SPEED TO A PREDETERMINED VALUE, SAID PASSAGEWAY HAVING A LENGTH-TO-HYDRAULIC RADIUS RATIO THAT IS CONSTANT AT ALL ENGINE SPEEDS AND LOADS WHEN SAID THROTTLE MEANS IS IN A POSITION AT WHICH SAID ENGINE CAN DEVELOP ITS MAXIMUM SPEED, AND SAID PASSAGEWAY FURTHER HAVING A WALL CONFIGURATION THAT IS CONSTANT AT ALL ENGINE SPEEDS.
Claim 2
Dependent Claim
155 words
AN INTAKE PIPE FOR USE IN GOVERNING THE MAXIMUM SPEED OF AN INTERNAL COMBUSTION ENGINE OF THE RECIPROCATING PISTON TYPE COMPRISING A WALLED PASSAGEWAY FORMED WITH AN AIR INLET AT ONE END THEREOF AND A COMBUSTIBLE CHARGE OUTLET AT THE OTHER END THEREOF, FUEL METERING MEANS COMMUNICATING WITH SAID PASSAGEWAY INTERMEDIATE SAID INLET AND SAID OUTLET, THROTTLE MEANS IN SAID PASSAGEWAY TO VARY THE SPEED OF SAID ENGINE, SAID PASSAGEWAY HAVING A LENGTH BETWEEN SAID AIR INLET AND SAID CHARGE OUTLET SUBSTANTAILLY GREATER THAN FOUR TIMES ITS HYDRAULIC RADIUS SO THAT WALL FRICTION RESTRICTS FLOW OF SAID CHARGE AT A PREDETERMINED MAXIMUM SPEED TO A PREDETERMINED VALUE, SAID PASSAGEWAY HAVING A LENGTH-TO-HYDRAULIC RADIUS RATIO THAT IS CONSTANT AT ALL ENGINE SPEEDS AND LOADS WHEN SAID THROTTLE MEANS IS IN A POSITION AT WHICH SAID ENGINE CAN DEVELOP ITS MAXIMUM SPEED, AND SAID PASSAGEWAY FURTHER HAVING A WALL CONFIGURATION THAT IS CONSTANT AT ALL ENGINE SPEEDS.
References Cited (Backward Citations)
US2213447A
Cited
US2836159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |