US3132633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston assembly
Assignee: Motors Liquidation Co
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Filing: 1963-04-11
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Granted: 1964-05-12
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Expires: 1983-04-11
Abstract
No abstract record available.
Inventors
- 👤 Zimmerman John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:29
CPC Classifications
F; F02; F02B; F02B23/00; F02B23/02; F02B23/06; F02B23/0618; F02B23/0627; F02B23/0603; F02B23/0675; F02F; F02F3/00; F02F3/28; F02F3/285; F02B2275/00; F02B2275/14; F02B23/0621; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PISTON ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE HAVING A FUEL INJECTION SYSTEM AND AN INJECTOR NOZZLE AND COMPRISING; A PISTON HEAD RECIPROCABLE IN SAID ENGINE AND HAVING A SPHERICAL INDENTATION IN THE UPPER SURFACE THEREOF; AND AN INSERT SECURED IN SAID INDENTATION IN SAID PISTON HEAD AND HAVING A CONVEX SURFACE ADJACENT SAID INDENTATION TO FORM WITH SAID INDENTATION A BOWLSHAPED PRECOMBUSTION CHAMBER, SAID INSERT HAVING A CENTRAL OPENING THERETHROUGH ALIGNED WITH SAID ININJECTOR NOZZLE AND COMMUNICATING WITH SAID PRECOMBUSTION CHAMBER TO CONVEY A COMBUSTIBLE MIXTURE THERETO FOR PARTIAL COMBUSTION THEREIN, SAID INSERT HAVING A PLURALITY OF ORIFICES RADIALLY SPACED FROM SAID CENTRAL OPENING AND COMMUNICATING BETWEEN SAID PRECOMBUSTION CHAMBER AND THE UPPER SURFACE OF SAID PISTON HEAD TO CONVEY SAID COMBUSTIBLE MIXTURE FROM SAID PRECOMBUSTION CHAMBER.
Claim 2
Dependent Claim
128 words
A PISTON ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE HAVING A FUEL INJECTION SYSTEM AND AN INJECTOR NOZZLE AND COMPRISING; A PISTON HEAD RECIPROCABLE IN SAID ENGINE AND HAVING A SPHERICAL INDENTATION IN THE UPPER SURFACE THEREOF; AND AN INSERT SECURED IN SAID INDENTATION IN SAID PISTON HEAD AND HAVING A CONVEX SURFACE ADJACENT SAID INDENTATION TO FORM WITH SAID INDENTATION A BOWLSHAPED PRECOMBUSTION CHAMBER, SAID INSERT HAVING A CENTRAL OPENING THERETHROUGH ALIGNED WITH SAID ININJECTOR NOZZLE AND COMMUNICATING WITH SAID PRECOMBUSTION CHAMBER TO CONVEY A COMBUSTIBLE MIXTURE THERETO FOR PARTIAL COMBUSTION THEREIN, SAID INSERT HAVING A PLURALITY OF ORIFICES RADIALLY SPACED FROM SAID CENTRAL OPENING AND COMMUNICATING BETWEEN SAID PRECOMBUSTION CHAMBER AND THE UPPER SURFACE OF SAID PISTON HEAD TO CONVEY SAID COMBUSTIBLE MIXTURE FROM SAID PRECOMBUSTION CHAMBER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |