Patent US3194492A successfully refreshed from Google Patents.
US3194492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized centrifuge
Assignee: Individual
•
Filing: 1962-06-28
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Granted: 1965-07-13
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Expires: 1982-06-28
Abstract
No abstract record available.
Inventors
- 👤 Richard A Koffinke
- 👤 Horace F Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:10
CPC Classifications
B; B04; B04B; B04B7/00; B04B1/00; B04B1/20; B04B15/00; B04B15/08; B04B9/00; B04B9/12; F; F26; F26B; F26B5/00; F26B5/08; G; G21; G21C; G21C19/00; G21C19/34; G21C19/38; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S277/00; Y10S277/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
IN A CENTRIFUGAL SEPARATOR COMPRISING A PRESSURE CASING, A SOLID-WALLED BOWL WITHIN SAID CASING, A ROTATABLY MOUNTED BOWL TRUNNION EXTENDING OUT OF SAID CASING, SAID TRUNNION BEING HOLLOW AND IN DRIVING RELATION WITH SAID BOWL, A CONVEYER WITHIN SAID BOWL, A ROTATABLY MOUNTED CONVEYER TRUNNION EXTENDING CONCENTRICALLY WITHIN SAID BOWL TRUNNION, IN DRIVING RELATION WITH SAID CONVEYER, MEANS OUTSIDE SAID CASING FOR DRIVING SAID TRUNNIONS AT HIGH BUT DIFFERENT SPEEDS, SAID SPEEDS BEING SUFFICIENT TO PRODUCE HIGH SEPARATING FORCES IN SAID BOWL, MEANS FOR INTRODUCING INTO SAID CASING AND SAID BOL A SLURRY TO BE SEPARATED AND A GAS TO MAINTAIN SUPERATMOSPHERIC PRESSURE IN SAID CASING, A FIRST FLUID SEALING CHAMBER SURROUNDING SAID BOWL TRUNNION AT THE POINT WHERE IT EXTENDS OUT OF SAID CASING, AND MEANS FOR SUPPLYING SAID FLUID CHAMBER WITH SEAL FLUID AT A PRESSURE HIGHER THAN THE PRESSURE WITHIN SAID CASING, THE IMPROEMENT COMPRISING, A LOW-PRESSURE DIFFERENTIAL FLUID CONTACT SEALING BETWEEN SAID BOWL TRUNNION AND SAID CASING AGAINST LEAKAGE FROM SAID FLUID SEALING CHAMBER INTO SAID CASING,
Claim 2
Dependent Claim
171 words
IN A CENTRIFUGAL SEPARATOR COMPRISING A PRESSURE CASING, A SOLID-WALLED BOWL WITHIN SAID CASING, A ROTATABLY MOUNTED BOWL TRUNNION EXTENDING OUT OF SAID CASING, SAID TRUNNION BEING HOLLOW AND IN DRIVING RELATION WITH SAID BOWL, A CONVEYER WITHIN SAID BOWL, A ROTATABLY MOUNTED CONVEYER TRUNNION EXTENDING CONCENTRICALLY WITHIN SAID BOWL TRUNNION, IN DRIVING RELATION WITH SAID CONVEYER, MEANS OUTSIDE SAID CASING FOR DRIVING SAID TRUNNIONS AT HIGH BUT DIFFERENT SPEEDS, SAID SPEEDS BEING SUFFICIENT TO PRODUCE HIGH SEPARATING FORCES IN SAID BOWL, MEANS FOR INTRODUCING INTO SAID CASING AND SAID BOL A SLURRY TO BE SEPARATED AND A GAS TO MAINTAIN SUPERATMOSPHERIC PRESSURE IN SAID CASING, A FIRST FLUID SEALING CHAMBER SURROUNDING SAID BOWL TRUNNION AT THE POINT WHERE IT EXTENDS OUT OF SAID CASING, AND MEANS FOR SUPPLYING SAID FLUID CHAMBER WITH SEAL FLUID AT A PRESSURE HIGHER THAN THE PRESSURE WITHIN SAID CASING, THE IMPROEMENT COMPRISING, A LOW-PRESSURE DIFFERENTIAL FLUID CONTACT SEALING BETWEEN SAID BOWL TRUNNION AND SAID CASING AGAINST LEAKAGE FROM SAID FLUID SEALING CHAMBER INTO SAID CASING,
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |