Patent US3957650A successfully refreshed from Google Patents.
US3957650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic centrifuge
Assignee: Individual
•
Filing: 1974-03-22
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Granted: 1976-05-18
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Expires: 1994-03-22
Abstract
Abstract The inventive acoustic centrifuge is used for filtering suspensions and comprises a rotor whose housing has an inlet port and an outlet port located in its opposite end plates in line with a rotor drive shaft. Mounted on the shaft inside the rotor housing is an acoustic transducer which is accommodated in a coaxial chamber and communicating with the outlet port. The side wall of this chamber forms a filtering partition. The emitting surface of an acoustic transducer faces the partition. The diameter of the outlet port is substantially larger than that of the inlet port, but is smaller than the diameter of the emitting surface.
Inventors
- 👤 Viktor Dmitrievich Petrushkin
- 👤 Vladimir Fedorovich Tarambula
- 👤 Anatoly Antonovich Nesterovich
- 👤 Boris Georgievich Novitsky
- 👤 Viktor Mironovich Fridman
- 👤 Dmitry Evseevich Shkoropad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
B; B04; B04B; B04B3/00; B04B3/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
179 words
An acoustic centrifuge for separating liquids, comprising: a drive shaft; a rotor having a drum-shaped housing coaxially mounted on said drive shaft and having inlet and outlet ports in opposite end plates of said housing, in line with said drive shaft; a chamber being formed inside said housing and having a side wall coaxial therewith, which side wall constitutes a filtering partition; and an acoustic transducer mounted on said drive shaft and accommodated in said chamber, an emitting surface of said transducer facing said partition and being coaxial therewith; said chamber communicating only with said outlet port, the diameter of the latter being substantially larger than that of said inlet port, but smaller than that of said emitting surface, resulting in a pressure differential, between a liquid to be separated and a resulting filtrate, across said partition so that said chamber is kept filled up with the filtrate during the operation of the centrifuge, as a consequence of which uniform acoustic contact is established between said emitting surface and said partition, resulting in an effective regeneration of said partition.
Claim 2
Dependent Claim
179 words
An acoustic centrifuge for separating liquids, comprising: a drive shaft; a rotor having a drum-shaped housing coaxially mounted on said drive shaft and having inlet and outlet ports in opposite end plates of said housing, in line with said drive shaft; a chamber being formed inside said housing and having a side wall coaxial therewith, which side wall constitutes a filtering partition; and an acoustic transducer mounted on said drive shaft and accommodated in said chamber, an emitting surface of said transducer facing said partition and being coaxial therewith; said chamber communicating only with said outlet port, the diameter of the latter being substantially larger than that of said inlet port, but smaller than that of said emitting surface, resulting in a pressure differential, between a liquid to be separated and a resulting filtrate, across said partition so that said chamber is kept filled up with the filtrate during the operation of the centrifuge, as a consequence of which uniform acoustic contact is established between said emitting surface and said partition, resulting in an effective regeneration of said partition.
Claim 3
Dependent Claim
22 words
The centrifuge as defined in claim 1, wherein the length of said emitting surface is substantially equal to that of said partition.
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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) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |