US3219186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Whirlpool apparatus
Assignee: Individual
•
Filing: 1962-10-30
•
Granted: 1965-11-23
•
Expires: 1982-10-30
Abstract
No abstract record available.
Inventors
- 👤 James H Polhemus
- 👤 Ammon Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:31
CPC Classifications
B; B04; B04C; B04C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN A SEPARATEORY VESSEL FOR SEPARATING PARTICULATE MIXTURES HAVING PARTICLES OF VARYING SPECIFIC GRAVITY HAVING MEANS FOR INTRODUCING TANGENTIALLY A LIQUID SEPARATING MEDIUM NEAR ONE END OF THE VESEL, AXIAL DISCHARGE MEANS FOR LIGHT MATERIAL AT THE SAME END OF THE VESSEL, PERIPHERAL DISCHARGE MEANS FOR HEAVY PARTICLES AT THE OPPOSITE END OF THE VESSEL AND A FEEDPIPE FOR INTRODUCTION OF FEED AXIALLY IN THE SAME END OF THE VESSEL AS THE PERIPHERAL DISCHARGE; THE IMPROVEMENT WHICH COMPRISES AN EXTEN-
Claim 2
Dependent Claim
80 words
IN A SEPARATEORY VESSEL FOR SEPARATING PARTICULATE MIXTURES HAVING PARTICLES OF VARYING SPECIFIC GRAVITY HAVING MEANS FOR INTRODUCING TANGENTIALLY A LIQUID SEPARATING MEDIUM NEAR ONE END OF THE VESEL, AXIAL DISCHARGE MEANS FOR LIGHT MATERIAL AT THE SAME END OF THE VESSEL, PERIPHERAL DISCHARGE MEANS FOR HEAVY PARTICLES AT THE OPPOSITE END OF THE VESSEL AND A FEEDPIPE FOR INTRODUCTION OF FEED AXIALLY IN THE SAME END OF THE VESSEL AS THE PERIPHERAL DISCHARGE; THE IMPROVEMENT WHICH COMPRISES AN EXTEN-
References Cited (Backward Citations)
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US2757582A
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US2725983A
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US2927693A
Cited
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Cited
US2917173A
Cited
US3101313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |