US3323293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer for internal combustion engines
Assignee: Briggs and Stratton Corp
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Filing: 1965-02-23
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Granted: 1967-06-06
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Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 John D Santi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:47
CPC Classifications
F; F02; F02M; F02M1/00; F02M1/16; Y; Y10; Y10S; Y10S261/00; Y10S261/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN COMBINATION: (A) A FUEL TANK FOR AN INTERNAL COMBUSTION ENGINE, SAID TANK HAVING A TOP WALL; (B) A CARBURETOR MOUNTED ON THE TOP WALL OF THE FUEL TANK AND HAVING A MIXING PASSAGE WITH AN UPWARDLY FACING AIR INLET; (C) AN AIR FILTER SEATED ON THE INLET OF THE MIXING PASSAGE; (D) A TUBULAR SCREW PASSING DOWN THROUGH THE AIR FILTER AND THREADED INTO THE BOTTOM WALL OF THE MIXING PASSAGE TO HOLD THE AIR FILTER IN POSITION; (E) A PRIMING PUMP CARRIED BY THE TOP WALL OF THE FUEL TANK AND LOCATED INSIDE THE TANK IN LINE WITH SAID TUBULAR SCREW, SAID PRIMING PUMP HAVING AN INLET OPENING TO THE INTERIOR OF THE FUEL TANK AND AN OUTLET WHICH PASSES THROUGH THE BOTTOM WALL OF THE MIXING PASSAGE; (F) A PLUNGER FOR THE PRINTING PUMP; AND
Claim 2
Dependent Claim
138 words
IN COMBINATION: (A) A FUEL TANK FOR AN INTERNAL COMBUSTION ENGINE, SAID TANK HAVING A TOP WALL; (B) A CARBURETOR MOUNTED ON THE TOP WALL OF THE FUEL TANK AND HAVING A MIXING PASSAGE WITH AN UPWARDLY FACING AIR INLET; (C) AN AIR FILTER SEATED ON THE INLET OF THE MIXING PASSAGE; (D) A TUBULAR SCREW PASSING DOWN THROUGH THE AIR FILTER AND THREADED INTO THE BOTTOM WALL OF THE MIXING PASSAGE TO HOLD THE AIR FILTER IN POSITION; (E) A PRIMING PUMP CARRIED BY THE TOP WALL OF THE FUEL TANK AND LOCATED INSIDE THE TANK IN LINE WITH SAID TUBULAR SCREW, SAID PRIMING PUMP HAVING AN INLET OPENING TO THE INTERIOR OF THE FUEL TANK AND AN OUTLET WHICH PASSES THROUGH THE BOTTOM WALL OF THE MIXING PASSAGE; (F) A PLUNGER FOR THE PRINTING PUMP; AND
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) | 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 |