Patent US3154295A successfully refreshed from Google Patents.
US3154295A
Expired / Lapsed
US
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Vortex seal
Assignee: Improved Machinery Inc
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Filing: 1963-10-01
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Granted: 1964-10-27
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Expires: 1983-10-01
Abstract
No abstract record available.
Inventors
- 👤 Karl E Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:22
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN A CHAMBER FOR MIXING MATERIALS WHEREIN A VORTEX IS FORMED DURING THE MIXING PROCESS, SAID CHAMBER HAVING A BOTTOM AND SIDE WALLS, A VORTEX SEAL FOR SEALING SAID VORTEX FROM THE ATMOSPHERE COMPRISING: A SEAL BODY AND MEANS FOR SUSPENDING SAID SEAL BODY WITHIN SAID CHAMBER; SAID SEAL BODY BEING OF CIRCULAR CROSS SECTION AND HAVING UPPER AND LOWER SIDE WALL SURFACES AND TOP AND BOTTOM WALL SURFACES, SAID WALL SURFACES BEING AIR IMPERVIOUS; SAID SEAL BODY HAVING ITS AXIS POSITIONED ALONG THAT OF SAID VORTEX WITHIN SAID CHAMBER AND HAVING ITS BOTTOM SPACED FROM THE BOTTOM OF SAID CHAMBER; SAID UPPER WALL SURFACE BEING POSITIONED IN SAID CHAMBER ABOVE THE SURFACE OF SAID VORTEX AND SAID LOWER WALL SURFACE BEING POSITIONED AT LEAST AS LOW AS THE UPPERMOST PORTION OF SAID VORTEX SURFACE; AND SAID LOWER WALL SURFACE HAVING A VORTEX CONTACTING PORTION THEREOF WHICH HAS A DIAMETER EQUAL TO THE MAXIMUM DIAMETER OF SAID VORTEX AT THE POINT IN SAID CHAMBER AT WHICH SAID VORTEX CONTACTING PORTION IS POSITIONED.
Claim 2
Dependent Claim
172 words
IN A CHAMBER FOR MIXING MATERIALS WHEREIN A VORTEX IS FORMED DURING THE MIXING PROCESS, SAID CHAMBER HAVING A BOTTOM AND SIDE WALLS, A VORTEX SEAL FOR SEALING SAID VORTEX FROM THE ATMOSPHERE COMPRISING: A SEAL BODY AND MEANS FOR SUSPENDING SAID SEAL BODY WITHIN SAID CHAMBER; SAID SEAL BODY BEING OF CIRCULAR CROSS SECTION AND HAVING UPPER AND LOWER SIDE WALL SURFACES AND TOP AND BOTTOM WALL SURFACES, SAID WALL SURFACES BEING AIR IMPERVIOUS; SAID SEAL BODY HAVING ITS AXIS POSITIONED ALONG THAT OF SAID VORTEX WITHIN SAID CHAMBER AND HAVING ITS BOTTOM SPACED FROM THE BOTTOM OF SAID CHAMBER; SAID UPPER WALL SURFACE BEING POSITIONED IN SAID CHAMBER ABOVE THE SURFACE OF SAID VORTEX AND SAID LOWER WALL SURFACE BEING POSITIONED AT LEAST AS LOW AS THE UPPERMOST PORTION OF SAID VORTEX SURFACE; AND SAID LOWER WALL SURFACE HAVING A VORTEX CONTACTING PORTION THEREOF WHICH HAS A DIAMETER EQUAL TO THE MAXIMUM DIAMETER OF SAID VORTEX AT THE POINT IN SAID CHAMBER AT WHICH SAID VORTEX CONTACTING PORTION IS POSITIONED.
References Cited (Backward Citations)
US2671647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |