US3225928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless belt filter
Assignee: Black HR Co
•
Filing: 1962-01-16
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Granted: 1965-12-28
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Expires: 1982-01-16
Abstract
No abstract record available.
Inventors
- 👤 Hugh R Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:52
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/04; B01D33/00; B01D33/04; B01D33/44; B01D33/46; B01D33/463; B01D33/80; B01D33/804; B01D33/807
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
IN COMBINATION, AN OUTLET BOX ADAPTED FOR CONNECSION TO A SUPPLY OF FLUID AND HAVING AN OUTLE ADJACENT THE BOTTOM THEREOF, THE FLUID ON THE OUTLET BOX MAINTAINING A FLUID LEVEL; A SKIMMER HOUSING WITHIN SAID OUTLET BOX INCLUDING A PARTITION WALL, THE UPPER PORTION OF SAID PARTITION WALL BEING APERTURED DEFINING A SKIMMING INLET FOR THE FLOW OF TOP SURFACE FLUIDS FROM SAID OUTLET BOX INTO SAID SKIMMER HOUSING; AN OUTLET PIPE ADJACENT THE BOTTOM OF SAID SKIMMER HOUSING FOR DRAINING THE FLUID THEREIN, THE FLUID COLLECTED IN THE SKIMMER HOUSING DEFINING A CONTROL FLUID LEVEL; A VERTICALLY ADJUSTABLE FLOAT IN OUTLET BOX ADJACENT SAID PARTITION WALL; AN UPRIGHT DAM MOUNTED ON SAID FIRST FLOAT FOR CON-
References Cited (Backward Citations)
US1194250A
Cited
US840446A
Cited
GB192333A
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US1661657A
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US2343179A
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US2619232A
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US2885080A
Cited
US2839970A
Cited
US3039610A
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US3091335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |