US3308794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine fuel system
Assignee: Caterpillar Inc
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Filing: 1964-12-21
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Granted: 1967-03-14
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Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 John M Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:24
CPC Classifications
F; F02; F02M; F02M43/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A FUEL SYSTEM FOR A MULTI-CYLINDER ENGINE HAVING PUMP MEANS FOR A PRIMARY FUEL, A CONDUIT FROM THE PUMP MEANS TO EACH CYLINDER, A SOURCE OF SECONDARY FUEL UNDER PRESSURE LOWER THAN PRESSURE DELIVERED BY SAID PUMP MEANS, PASSAGE MEANS COMMUNICATING SECONDARY FUEL FROM THE SOURCE TO EACH OF SAID CONDUITS, AND CHECK VALVE MEANS IN EACH SAID PASSAGE MEANS TO ADMIT SECONDARY FUEL TO THE CONDUITS ONLY AT SPACED INTERVALS OF LOW PRESSURE OF PRIMARY FUEL IN THE CONDUITS.
Claim 2
Dependent Claim
80 words
A FUEL SYSTEM FOR A MULTI-CYLINDER ENGINE HAVING PUMP MEANS FOR A PRIMARY FUEL, A CONDUIT FROM THE PUMP MEANS TO EACH CYLINDER, A SOURCE OF SECONDARY FUEL UNDER PRESSURE LOWER THAN PRESSURE DELIVERED BY SAID PUMP MEANS, PASSAGE MEANS COMMUNICATING SECONDARY FUEL FROM THE SOURCE TO EACH OF SAID CONDUITS, AND CHECK VALVE MEANS IN EACH SAID PASSAGE MEANS TO ADMIT SECONDARY FUEL TO THE CONDUITS ONLY AT SPACED INTERVALS OF LOW PRESSURE OF PRIMARY FUEL IN THE CONDUITS.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |