Patent US3229591A successfully refreshed from Google Patents.
US3229591A
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Crankcase breather
Assignee: Automobiles Citroen SA
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Filing: 1964-03-31
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Granted: 1966-01-18
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Expires: 1984-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jean Cadiou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:26
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/12; F04B39/128; F01; F01M; F01M13/00; F01M13/0011; F01M13/04; F04B39/16; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/24; F02B75/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A CRANKCASE BREATHER ADAPTED TO CREATE A VACUUM IN A CRANKCASE CONTAINING A CRANKSHAFT AND CONNECTING-ROD ASSEMBLY, WHICH COMPRISES A FIRST CHAMBER CONNECTED TO SAID CRANKCASE, A VALVE DISPOSED BETWEEN SAID CRANKCASE AND SAID FIRST CHAMBER, A RETURN DUCT FROM SAID FIRST CHAMBER TO SAID CRANKCASE WHICH LEADS FROM THE LOWER PORTION OF SAID FIRST CHAMBER, ANOTHER CHAMBER OVERLYING SAID FIRST CHAMBER, VALVE MEANS BETWEEN SAID FIRST CHAMBER AND SAID OTHER CHAMBER, AND DUCT MEANS BETWEEN SAID OTHER CHAMBER AND THE ATMOSPHERE.
Claim 2
Dependent Claim
82 words
A CRANKCASE BREATHER ADAPTED TO CREATE A VACUUM IN A CRANKCASE CONTAINING A CRANKSHAFT AND CONNECTING-ROD ASSEMBLY, WHICH COMPRISES A FIRST CHAMBER CONNECTED TO SAID CRANKCASE, A VALVE DISPOSED BETWEEN SAID CRANKCASE AND SAID FIRST CHAMBER, A RETURN DUCT FROM SAID FIRST CHAMBER TO SAID CRANKCASE WHICH LEADS FROM THE LOWER PORTION OF SAID FIRST CHAMBER, ANOTHER CHAMBER OVERLYING SAID FIRST CHAMBER, VALVE MEANS BETWEEN SAID FIRST CHAMBER AND SAID OTHER CHAMBER, AND DUCT MEANS BETWEEN SAID OTHER CHAMBER AND THE ATMOSPHERE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |