Patent US3372685A successfully refreshed from Google Patents.
US3372685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excessive crankcase pressure warning system and relief valve
Assignee: ARDELL T BESTLAND
•
Filing: 1966-12-05
•
Granted: 1968-03-12
•
Expires: 1986-12-05
Abstract
No abstract record available.
Inventors
- 👤 Ardell T Bestland
- 👤 Thomas M Breton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:11
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/10; F01M13/00; F02; F02B; F02B77/00; F02B77/08; F02B77/10; F01M13/0011; F16; F16N; F16N2250/00; F16N2250/04; F16N2260/00; F16N2260/02; F16N2260/08; F16N2280/00; F16N2280/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
IN COMBINATION WITH AN INTERNAL COMBUSTION ENGINE CRANKCASE INCLUDING A CRANKCASE BREATHER OUTLET PIPE SUBJECT TO BLOCKAGE, PRESSURE SENSING MEANS COMMUNICATED WITH THE INTERIOR OF SAID CRANKCASE AND OPERATIVE TO RENDER A SIGNAL AT A REMOTE LOCATION IN RESPONSE TO A RISE IN PRESSURE WITHIN SAID CRANKCASE ABOVE A PREDETERMINED PRESSURE.
Claim 2
Dependent Claim
51 words
IN COMBINATION WITH AN INTERNAL COMBUSTION ENGINE CRANKCASE INCLUDING A CRANKCASE BREATHER OUTLET PIPE SUBJECT TO BLOCKAGE, PRESSURE SENSING MEANS COMMUNICATED WITH THE INTERIOR OF SAID CRANKCASE AND OPERATIVE TO RENDER A SIGNAL AT A REMOTE LOCATION IN RESPONSE TO A RISE IN PRESSURE WITHIN SAID CRANKCASE ABOVE A PREDETERMINED PRESSURE.
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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |