Patent US3179334A successfully refreshed from Google Patents.
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 16:46
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-
References Cited (Backward Citations)
DE110576C
Cited
US273037A
Cited
US723354A
Cited
US1158959A
Cited
US1549913A
Cited
GB257767A
Cited
US1695990A
Cited
US2141025A
Cited
US2169300A
Cited
US2321887A
Cited
US2458027A
Cited
US2688437A
Cited
US2648433A
Cited
US2738070A
Cited
US2692707A
Cited
US2649963A
Cited
US2750040A
Cited
US2688436A
Cited
US2752089A
Cited
US2749031A
Cited
US2928546A
Cited
US2953248A
Cited
US3025965A
Cited
US3004050A
Cited
US2995255A
Cited
US3081026A
Cited
US3145173A
Cited
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 |