US3088305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter construction
Assignee: Whirlpool Corp
•
Filing: 1960-03-17
•
Granted: 1963-05-07
•
Expires: 1980-03-17
Abstract
No abstract record available.
Inventors
- 👤 Ohmann William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:52
CPC Classifications
D; D06; D06F; D06F39/00; D06F39/02; D06F39/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
142 words
A FILTER COMPRISING A HOUSING HAVING A BOTTOM WALL WITH A RELATIVELY DEEP WEELL PORTION, SAID HOUSING HAVING A SHELF FORMING AN OPENING ABOVE SAID WELL AND HAVING AN UPSTANDING WALL SURROUNDING SAID OPENINGM AN OUTLET IN SAID UPSTANDING WALL, A FILTER ELEMENT BETWEEN SAID OPENING AND SAID OUTLET, AN INLET BELOW SAID OPENING, MEANS FORMING A CHANNEL LEADING FROM SAID INLET FOR A PREDETERMINED DISTANCE AROUND THE PERIPHERY OF SAID HOUSING BELOW SAID OPENING FOR DIRECTING FLUID AROUND THE PERIPHERY OF SAID HOUSING BEFORE ITS ENTRY INTO SAID WALL A DAMPING WALL SLOPING UPWARDLY FROM SAID BOTTOM WALL IN PREDETERMINED SPACED RELATION FROM THE END OF SAID CHANNEL AND POSITIONED IN THE PATH OF FLOW FROM SAID CHANNEL TO DIRECT FLUID INTO SAID WELL WHEREBY THE FLUID CAN RISE GENTLY FROM SAID WELL THROUGH SAID OPENING AND THENCE TO SAID OUTLET.
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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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |