US3091502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally balanced piston
Assignee: Harvey Aluminum Inc
•
Filing: 1960-08-15
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Granted: 1963-05-28
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Expires: 1980-08-15
Abstract
No abstract record available.
Inventors
- 👤 Richard W Cass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:06
CPC Classifications
F; F02; F02F; F02F3/00; F02F3/0076; F02F2200/00; F02F2200/04; F05; F05C; F05C2201/00; F05C2201/02; F05C2201/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A PISTON FOR OPERATION IN THE CYLINDER OF AN INTERNAL COMBUSTION ENGINE AND WHEREIN IT ABSORBS HEAT FROM THE BURNING GASES AND INCLUDING, A HEAD PORTION AND SURROUNDING RING PORTION OF SUBSTANTIALLY HEAVY CROSS-SECTION, A SKIRT PORTION OF SUBSTANTIALLY LIGHT CROSS-SECTION AND DEPENDING FROM THE HEAD PORTION AND A LOWER TERMINAL END PORTION SEPARATE FROM THE SAID SKIRT PORTION, AND CIRCUMFERENTIALLY SPACED LONGITUDINAL AXIALLY DISPOSED RIBS CONTIGUOUS WITH ALL OF SAID PORTIONS AND EXTENDING FROM THE HEAD AND RING PORTION AND ALONG SAID SKIRT PORTION AND JOINING THE SEPARATE END PORTION TO THE SKIRT PORTION, SAID RIBS BEING THIN-SHAPED AND ADPATED TO DISSIPATE HEAT FROM ALL OF SAID PORTIONS AND INTO SURROUNDING FLUIDS AND WHEREBY THERE IS HEAT CONDUCTION FROM THE HEAD AND RING PORTION DOWNWARDLY TOWARD THE SAID END PORTION OF THE PISTON.
Claim 2
Dependent Claim
134 words
A PISTON FOR OPERATION IN THE CYLINDER OF AN INTERNAL COMBUSTION ENGINE AND WHEREIN IT ABSORBS HEAT FROM THE BURNING GASES AND INCLUDING, A HEAD PORTION AND SURROUNDING RING PORTION OF SUBSTANTIALLY HEAVY CROSS-SECTION, A SKIRT PORTION OF SUBSTANTIALLY LIGHT CROSS-SECTION AND DEPENDING FROM THE HEAD PORTION AND A LOWER TERMINAL END PORTION SEPARATE FROM THE SAID SKIRT PORTION, AND CIRCUMFERENTIALLY SPACED LONGITUDINAL AXIALLY DISPOSED RIBS CONTIGUOUS WITH ALL OF SAID PORTIONS AND EXTENDING FROM THE HEAD AND RING PORTION AND ALONG SAID SKIRT PORTION AND JOINING THE SEPARATE END PORTION TO THE SKIRT PORTION, SAID RIBS BEING THIN-SHAPED AND ADPATED TO DISSIPATE HEAT FROM ALL OF SAID PORTIONS AND INTO SURROUNDING FLUIDS AND WHEREBY THERE IS HEAT CONDUCTION FROM THE HEAD AND RING PORTION DOWNWARDLY TOWARD THE SAID END PORTION OF THE PISTON.
References Cited (Backward Citations)
US1503267A
Cited
GB568899A
Cited
US2494748A
Cited
US2544494A
Cited
US2685729A
Cited
US3010186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |