US3209738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain
Assignee: Walker Manufacturing Co
•
Filing: 1964-03-30
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Granted: 1965-10-05
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Expires: 1984-03-30
Abstract
No abstract record available.
Inventors
- 👤 Walter H Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:33
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0874; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3068; Y10T137/7287; Y10T137/7313; Y10T137/7323; Y10T137/7326
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN COMBINATION IN A CRANKCASE VENTILATION SYSTEM COMMUNICATING BLOWBY GASES FROM THE CRNKCASE TO THE AIR INTAKE SECTION OF AN INTERNAL COMBUSTION ENGINE, A TUBULAR BREATHER PIPE COMMUNICABLE AT ONE END WITH SAID CRANKCASE AND AT THE OPPOSITE END WITH SAID AIR INTAKE SYSTEM, A CONDENSED WATER VAPOR COLLECTING HOUSING COMMUNICABLE WITH SAID BREATHER PIPE, SAID HOUSING BEING FORMED WITH A DOWNWARDLY EXTENDING CONICAL SECTION DEFINING A DRAIN OPENING AND AN ANNULAR SEATING SURFACE, AND A HOLLOW AIR-TIGHT PLASTIC BALL IN SAID HOUSING MOVABLE TO AND FROM A POSITION ENGAGING SAID SEATING SURFACE AND CLOSING SAID DRAIN OPENING, SAID HOUSING BEING FORMED WITH A PLURALITY OF GUIDES ADAPTED TO LIMIT THE MOVEMENT OF SAID BALL WITHIN SAID HOUSING.
Claim 2
Dependent Claim
118 words
IN COMBINATION IN A CRANKCASE VENTILATION SYSTEM COMMUNICATING BLOWBY GASES FROM THE CRNKCASE TO THE AIR INTAKE SECTION OF AN INTERNAL COMBUSTION ENGINE, A TUBULAR BREATHER PIPE COMMUNICABLE AT ONE END WITH SAID CRANKCASE AND AT THE OPPOSITE END WITH SAID AIR INTAKE SYSTEM, A CONDENSED WATER VAPOR COLLECTING HOUSING COMMUNICABLE WITH SAID BREATHER PIPE, SAID HOUSING BEING FORMED WITH A DOWNWARDLY EXTENDING CONICAL SECTION DEFINING A DRAIN OPENING AND AN ANNULAR SEATING SURFACE, AND A HOLLOW AIR-TIGHT PLASTIC BALL IN SAID HOUSING MOVABLE TO AND FROM A POSITION ENGAGING SAID SEATING SURFACE AND CLOSING SAID DRAIN OPENING, SAID HOUSING BEING FORMED WITH A PLURALITY OF GUIDES ADAPTED TO LIMIT THE MOVEMENT OF SAID BALL WITHIN SAID HOUSING.
References Cited (Backward Citations)
US2056762A
Cited
US3063440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |