Patent US3265084A successfully refreshed from Google Patents.
US3265084A
Expired / Lapsed
US
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Engine crankcase breather valve
Assignee: Caterpillar Inc
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Filing: 1964-10-14
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Granted: 1966-08-09
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Expires: 1984-10-14
Abstract
No abstract record available.
Inventors
- 👤 Harold H Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:21
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M13/022; F01M13/023; F16; F16K; F16K15/00; F16K15/14; F16K15/144; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7748; Y10T137/7752; Y10T137/7781; Y10T137/7834
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A VALVE TO CONTROL FLUID FLOW COMPRISING A HOUSING HAVING INLET AND OUTLET PASSAGES, A CENTRALLY DISPOSED VALVE SEAT, A VALVE ELEMENT NORMALLY CLOSING CONNECTION BETWEEN SAID PASSAGES, MEANS TO PERMIT OPENING OF THE VALVE BY PRESSURE IN THE INLET PASSAGE, SAID VALVE ELEMENT COMPRISING A DIAPHRAGM BEARING AGAINST SAID CENTRALLY DISPOSED VALVE SEAT; SAID DIAPHRAGM HAVING A CENTRAL OPENING NORMALLY CLOSED BY SAID VALVE SEAT, AND A TUBULAR BELLOWS COMMUNICATING BETWEEN SAID OPENING AND SAID OUTLET PASSAGE; SAID MEANS INCLUDING SAID INLET PASSAGE COMMUNICATING WITH THE DIAPHRAGM IN AN ANNULAR AREA OUTWARDLY OF THE SEAT AND AN ATMOSPHERIC PASSAGE COMMUNICATING WITH THE DIAPHRAGM IN AN ANNULAR AREA INWARDLY OF THE SEAT, WHEREBY SAID VALVE REMAINS CLOSED UNLESS THE INLET PRESSURE IS ABOVE ATMOSPHERIC PRESSURE.
Claim 2
Dependent Claim
125 words
A VALVE TO CONTROL FLUID FLOW COMPRISING A HOUSING HAVING INLET AND OUTLET PASSAGES, A CENTRALLY DISPOSED VALVE SEAT, A VALVE ELEMENT NORMALLY CLOSING CONNECTION BETWEEN SAID PASSAGES, MEANS TO PERMIT OPENING OF THE VALVE BY PRESSURE IN THE INLET PASSAGE, SAID VALVE ELEMENT COMPRISING A DIAPHRAGM BEARING AGAINST SAID CENTRALLY DISPOSED VALVE SEAT; SAID DIAPHRAGM HAVING A CENTRAL OPENING NORMALLY CLOSED BY SAID VALVE SEAT, AND A TUBULAR BELLOWS COMMUNICATING BETWEEN SAID OPENING AND SAID OUTLET PASSAGE; SAID MEANS INCLUDING SAID INLET PASSAGE COMMUNICATING WITH THE DIAPHRAGM IN AN ANNULAR AREA OUTWARDLY OF THE SEAT AND AN ATMOSPHERIC PASSAGE COMMUNICATING WITH THE DIAPHRAGM IN AN ANNULAR AREA INWARDLY OF THE SEAT, WHEREBY SAID VALVE REMAINS CLOSED UNLESS THE INLET PRESSURE IS ABOVE ATMOSPHERIC PRESSURE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |