US3279326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam engine with self-contained valvular mechanism
Assignee: Thermo Fisher Scientific Inc
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Filing: 1964-02-10
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Granted: 1966-10-18
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Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 Harvey Robert
- 👤 Maglio Francis Leo Lo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:57
CPC Classifications
F; F01; F01L; F01L35/00; F01L35/04; F01B; F01B17/00; F01B17/02; F01B17/04; F01B25/00; F01B25/02; F01B25/08; F01B25/10; F01B2171/00; F01B2171/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A RECIPROCATING FLUID ENGINE COMPRISING A CYLINDER HAIVNG A HEAD AT ONE END, WITH A VALVE SEAT FORMED THEREIN, A PISTON MOVEABLE IN SAID CYLINDER AND NORMALLY SPRING BIASED IN THE DIRECTION OF SAID HEAD, SAID VALVE SEAT EXTENDING THROUGH SAID HEAD OPPOSITE SAID PISTON, A FLUID RECEIVING CHAMBER AXIALLY POSITIONED ABOVE SAID HEAD CONTAINING AN ADMISSION VALVE NORMALLY BIASED INTO ENGAGEMENT WITH SAID VALVE SEAT, MEANS ON SAID PISTON ADAPTED TO LIFT SAID ADMISSION VALVE WHEN SAID PISTON IS NEAR TOP DEAD CENTER, AND EXHAUST PORTS DISPOSED THROUGH SAID PISTON, EXHAUST VALVE MEANS SUPERPOSED ON SAID PORTS AND MEANS TO LIFT SAID EXHAUST VALVE MEANS TO EFFECT EFFICIENT AND EFFECTIVE EXHAUSTING THROUGH SAID PISTON.
Claim 2
Dependent Claim
115 words
A RECIPROCATING FLUID ENGINE COMPRISING A CYLINDER HAIVNG A HEAD AT ONE END, WITH A VALVE SEAT FORMED THEREIN, A PISTON MOVEABLE IN SAID CYLINDER AND NORMALLY SPRING BIASED IN THE DIRECTION OF SAID HEAD, SAID VALVE SEAT EXTENDING THROUGH SAID HEAD OPPOSITE SAID PISTON, A FLUID RECEIVING CHAMBER AXIALLY POSITIONED ABOVE SAID HEAD CONTAINING AN ADMISSION VALVE NORMALLY BIASED INTO ENGAGEMENT WITH SAID VALVE SEAT, MEANS ON SAID PISTON ADAPTED TO LIFT SAID ADMISSION VALVE WHEN SAID PISTON IS NEAR TOP DEAD CENTER, AND EXHAUST PORTS DISPOSED THROUGH SAID PISTON, EXHAUST VALVE MEANS SUPERPOSED ON SAID PORTS AND MEANS TO LIFT SAID EXHAUST VALVE MEANS TO EFFECT EFFICIENT AND EFFECTIVE EXHAUSTING THROUGH SAID PISTON.
References Cited (Backward Citations)
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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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |