US3221722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston
Assignee: Continental Aviation and Engineering Corp
•
Filing: 1964-01-03
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Granted: 1965-12-07
•
Expires: 1984-01-03
Abstract
No abstract record available.
Inventors
- 👤 Carl F Bachle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:23
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/06; F01P3/08; F02; F02B; F02B23/00; F02B23/02; F02B23/06; F02B23/0603; F02B23/0675; F02B23/0645; F02B23/0648; F02B23/0651; F02B23/066; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN AN INTERNAL COMBUSTION ENGINE A PISTON ASSEMBLY COMPRISING (A) A PISTON MEMBER HAVING A HOLLOW HEAD PORTION AND A SKIRT DEPENDING THEREFROM, (B) AN INSERT MEMBER CARRIED IN SAID HOLLOW HEAD PORTION AND HAVING A COMBUSTION CHAMBER CAVITY EXTENDING FROM THE TOP FACE OF SAID INSERT MEMBER INTO THE INTERIOR OF SAID HEAD PORTION, (C) MEANS SPACING SAID INSERT MEMBER FROM SAID HEAD PORTION WHEREBY TO FORM A THERMAL DAM THEREBETWEEN, (D) SAID INSERT MEMBER BEING PROVIDED WITH A SUBSTANTIALLY ANNULAR CAVITY ENCOMPASSING SAID COMBUSTION CHAMBER CAVITY, (E) A SECOND INSERT MEMBER CARRIED IN SAID HOLLOW HEAD PORTION BY SAID FIRST MENTIONED INSERT MEMBER, (F) SAID SECOND INSERT MEMBER CLOSING SAID ANNULAR CAVITY AND HAVING AN INLET AND AN OUTLET, AND (G) MEANS DIRECTING A FLOW OF COOLING FLUID THROUGH SAID INLET AND INTO SAID ANNULAR CAVITY.
Claim 2
Dependent Claim
138 words
IN AN INTERNAL COMBUSTION ENGINE A PISTON ASSEMBLY COMPRISING (A) A PISTON MEMBER HAVING A HOLLOW HEAD PORTION AND A SKIRT DEPENDING THEREFROM, (B) AN INSERT MEMBER CARRIED IN SAID HOLLOW HEAD PORTION AND HAVING A COMBUSTION CHAMBER CAVITY EXTENDING FROM THE TOP FACE OF SAID INSERT MEMBER INTO THE INTERIOR OF SAID HEAD PORTION, (C) MEANS SPACING SAID INSERT MEMBER FROM SAID HEAD PORTION WHEREBY TO FORM A THERMAL DAM THEREBETWEEN, (D) SAID INSERT MEMBER BEING PROVIDED WITH A SUBSTANTIALLY ANNULAR CAVITY ENCOMPASSING SAID COMBUSTION CHAMBER CAVITY, (E) A SECOND INSERT MEMBER CARRIED IN SAID HOLLOW HEAD PORTION BY SAID FIRST MENTIONED INSERT MEMBER, (F) SAID SECOND INSERT MEMBER CLOSING SAID ANNULAR CAVITY AND HAVING AN INLET AND AN OUTLET, AND (G) MEANS DIRECTING A FLOW OF COOLING FLUID THROUGH SAID INLET AND INTO SAID ANNULAR CAVITY.
References Cited (Backward Citations)
FR634700A
Cited
AT126451B
Cited
US2720870A
Cited
US2882106A
Cited
US2865348A
Cited
US2800119A
Cited
GB871915A
Cited
GB892171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |