US3179334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge discharge means
Assignee: Pennwalt Corp
•
Filing: 1961-09-15
•
Granted: 1965-04-20
•
Expires: 1981-09-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas D Sharples
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:59
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/04; B04B1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A CENTRIFUGE COMPRISING A BOWL MOUNTED TO ROTATE ABOUT AN AXIS AND HAVING A SEPARATING ZONE AND AN OUTLET FOR A SEPARATED COMPONENT SPACED FROM THE ZONE, AN EXPANDIBLE FLUID CHAMBER MOUNTED IN THE BOWL INTERMEDIATE THE CENTRIFUGING ZONE AND THE OUTLET AND HAVING AN INWARD PORTION COMPRISING WEIR MEANS AND ADAPTED TO MOVE RADIALLY OF THE BOWL WHEN FLUID PRESSURE IN THE CHAMBER IS CHANGED TO THEREBY CONTROL THE LEVEL OF LIQUID IN THE BOWL, AN ANNULAR POCKET IN THE BOWL FACING IN-
Claim 2
Dependent Claim
84 words
A CENTRIFUGE COMPRISING A BOWL MOUNTED TO ROTATE ABOUT AN AXIS AND HAVING A SEPARATING ZONE AND AN OUTLET FOR A SEPARATED COMPONENT SPACED FROM THE ZONE, AN EXPANDIBLE FLUID CHAMBER MOUNTED IN THE BOWL INTERMEDIATE THE CENTRIFUGING ZONE AND THE OUTLET AND HAVING AN INWARD PORTION COMPRISING WEIR MEANS AND ADAPTED TO MOVE RADIALLY OF THE BOWL WHEN FLUID PRESSURE IN THE CHAMBER IS CHANGED TO THEREBY CONTROL THE LEVEL OF LIQUID IN THE BOWL, AN ANNULAR POCKET IN THE BOWL FACING IN-
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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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |