Patent US3349758A successfully refreshed from Google Patents.
US3349758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precombustion chamber device
Assignee: Individual
•
Filing: 1965-08-19
•
Granted: 1967-10-31
•
Expires: 1985-08-19
Abstract
No abstract record available.
Inventors
- 👤 Gragson Robert Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:50
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/14; F02B2019/006; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PRECOMBUSTION CHAMBER DEVICE CAPABLE OF USE WITH AN INTERNAL COMBUSTION ENGINE COMPRISING, WALLS DEFINING AN ENCLOSED PRECOMBUSTION CHAMBER, ONE OF SAID WALLS HAVING AN INLET TO SAID PRECOMBUSTION CHAMBER FOR CONNECTION TO A FUEL INJECTING DEVICE, A PAIR OF CONCENTRIC TUBULAR MEMBERS ATTACHED TO ONE OF SAID WALLS AND EXTENDING OUTWARDLY FROM SAID PRECOMBUSTION CHAMBER, SAID TUBULAR MEMBERS BEING SPACED APART RADIALLY TO DE-
Claim 2
Dependent Claim
65 words
A PRECOMBUSTION CHAMBER DEVICE CAPABLE OF USE WITH AN INTERNAL COMBUSTION ENGINE COMPRISING, WALLS DEFINING AN ENCLOSED PRECOMBUSTION CHAMBER, ONE OF SAID WALLS HAVING AN INLET TO SAID PRECOMBUSTION CHAMBER FOR CONNECTION TO A FUEL INJECTING DEVICE, A PAIR OF CONCENTRIC TUBULAR MEMBERS ATTACHED TO ONE OF SAID WALLS AND EXTENDING OUTWARDLY FROM SAID PRECOMBUSTION CHAMBER, SAID TUBULAR MEMBERS BEING SPACED APART RADIALLY TO DE-
References Cited (Backward Citations)
US2003311A
Cited
US2065025A
Cited
US2066228A
Cited
US2106124A
Cited
US2058827A
Cited
US2112787A
Cited
US2236950A
Cited
US2804858A
Cited
US2853060A
Cited
US2972987A
Cited
US2977941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |