US3272481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing devices
Assignee: Nautamix BV
•
Filing: 1964-07-07
•
Granted: 1966-09-13
•
Expires: 1984-07-07
Abstract
No abstract record available.
Inventors
- 👤 Constant J Nauta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:12
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/95; B01F27/953; B01F27/05; B01F27/11; B01F27/114; B01F27/1143; B01F27/23; B01F27/232; B01F27/2324
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN A MIXING DEVICE HAVING AT LEAST ONE MIXING VESSEL WITH A SIDE WALL OF CIRCULAR CROSS-SECTION AND A BOTTOM, AT LEAST ONE MIXING ELEMENT DISPOSED IN SAID VESSEL WITH THE LONGITUDINAL AXIS OF SAID ELEMENT EXTENDING PARALLEL TO SAID SIDE WALL, MEANS MOUNTING SAID ELEMENT FOR REVOLVING ABOUT THE LONGITUDINAL AXIS OF THE VESSEL IN CLOSE PROXIMITY TO SAID SIDE WALL, AND DRIVE MEANS FOR EFFECTING SAID REVOLVING OF SAID MIXING ELEMENT; SAID SIDE WALL COMPRISING A CLOSED RIGID OUTER CASING AND A CLOSED ELASTIC INNER CASING JOINED TOGETHER IN A FLUIDTIGHT MANNER AT THEIR UPPER AND LOWER EDGES TO DEFINE A SPACE THEREBETWEEN, AND VALVE MEANS CARRIED BY SAID SIDE WALL AND COMMUNICATING WITH SAID SPACE SO THAT THE PRESSURE IN SAID SPACE MAY BE VARIED THROUGH SAID VALVE MEANS TO CAUSE THE MOVEMENT OF SAID ELASTIC INNER CASING TOWARD AND AWAY FROM SAID MIXING ELEMENT.
Claim 2
Dependent Claim
148 words
IN A MIXING DEVICE HAVING AT LEAST ONE MIXING VESSEL WITH A SIDE WALL OF CIRCULAR CROSS-SECTION AND A BOTTOM, AT LEAST ONE MIXING ELEMENT DISPOSED IN SAID VESSEL WITH THE LONGITUDINAL AXIS OF SAID ELEMENT EXTENDING PARALLEL TO SAID SIDE WALL, MEANS MOUNTING SAID ELEMENT FOR REVOLVING ABOUT THE LONGITUDINAL AXIS OF THE VESSEL IN CLOSE PROXIMITY TO SAID SIDE WALL, AND DRIVE MEANS FOR EFFECTING SAID REVOLVING OF SAID MIXING ELEMENT; SAID SIDE WALL COMPRISING A CLOSED RIGID OUTER CASING AND A CLOSED ELASTIC INNER CASING JOINED TOGETHER IN A FLUIDTIGHT MANNER AT THEIR UPPER AND LOWER EDGES TO DEFINE A SPACE THEREBETWEEN, AND VALVE MEANS CARRIED BY SAID SIDE WALL AND COMMUNICATING WITH SAID SPACE SO THAT THE PRESSURE IN SAID SPACE MAY BE VARIED THROUGH SAID VALVE MEANS TO CAUSE THE MOVEMENT OF SAID ELASTIC INNER CASING TOWARD AND AWAY FROM SAID MIXING ELEMENT.
References Cited (Backward Citations)
NL78793C
Cited
US2967695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |