US3715104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for carrying out ultrasonic agitation of liquid dispersions
Assignee: Individual
•
Filing: 1970-11-05
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Granted: 1973-02-06
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Expires: 1990-11-05
Abstract
Abstract Liquid systems, such as aqueous dispersions of cells, are passed across the space between plates, one of which is attached to the end of an ultrasonic probe. The other plate is stationary and mounted in a container which permits carrying out the operation under any desired pressure. The plates are spaced the desired distance for maximum efficiency and there are two liquid conduits into the container, one at the side and directed across the space, and the other axial. One or both plates may be provided with baffles, such as spiral baffles or labyrinths to keep the liquid flowing thereover in the ultrasonic zone for a sufficient time. The direction of flow of the liquid is important, and the best results are obtained if the liquid flows in the inlet conduit across the plates and out the axial conduit instead of the reverse. Efficiency is greatly increased, and certain very tough cells, such as yeast cells, can be ruptured with relatively small outputs of energy.
Inventors
- 👤 E Cottell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:10
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/06; C12N1/066; B; B01; B01F; B01F25/00; B01F25/20; B01F25/25; B01F31/00; B01F31/80; B01F31/82; B01F31/85; B01J; B01J19/00; B01J19/08; B01J19/10; C12M; C12M47/00; C12M47/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
An apparatus for sonic agitation of liquid media comprising a sonic probe, a sonic generator imparting longitudinal vibrations thereto, the probe constituting a velocity transformer with a larger cross-section at the sonic generator than the probe end, a closed container, the probe entering the container through an elastic seal at approximately an odd quarter wave nodal point for the sonic frequency used, a plate fastened to the end of the sonic probe, said plate having a cross-sectional area less than the cross-section of the probe at the sonic generator and opposite a plate fastened to the container, means for adjusting the spacing between plates through a small distance, liquid conduits, one to the periphery of the space between the plates and the other axially, and means for causing liquid to flow through the container.
Claim 2
Independent Claim
134 words
An apparatus for sonic agitation of liquid media comprising a sonic probe, a sonic generator imparting longitudinal vibrations thereto, the probe constituting a velocity transformer with a larger cross-section at the sonic generator than the probe end, a closed container, the probe entering the container through an elastic seal at approximately an odd quarter wave nodal point for the sonic frequency used, a plate fastened to the end of the sonic probe, said plate having a cross-sectional area less than the cross-section of the probe at the sonic generator and opposite a plate fastened to the container, means for adjusting the spacing between plates through a small distance, liquid conduits, one to the periphery of the space between the plates and the other axially, and means for causing liquid to flow through the container.
Claim 3
Independent Claim
134 words
An apparatus for sonic agitation of liquid media comprising a sonic probe, a sonic generator imparting longitudinal vibrations thereto, the probe constituting a velocity transformer with a larger cross-section at the sonic generator than the probe end, a closed container, the probe entering the container through an elastic seal at approximately an odd quarter wave nodal point for the sonic frequency used, a plate fastened to the end of the sonic probe, said plate having a cross-sectional area less than the cross-section of the probe at the sonic generator and opposite a plate fastened to the container, means for adjusting the spacing between plates through a small distance, liquid conduits, one to the periphery of the space between the plates and the other axially, and means for causing liquid to flow through the container.
Claim 4
Independent Claim
134 words
An apparatus for sonic agitation of liquid media comprising a sonic probe, a sonic generator imparting longitudinal vibrations thereto, the probe constituting a velocity transformer with a larger cross-section at the sonic generator than the probe end, a closed container, the probe entering the container through an elastic seal at approximately an odd quarter wave nodal point for the sonic frequency used, a plate fastened to the end of the sonic probe, said plate having a cross-sectional area less than the cross-section of the probe at the sonic generator and opposite a plate fastened to the container, means for adjusting the spacing between plates through a small distance, liquid conduits, one to the periphery of the space between the plates and the other axially, and means for causing liquid to flow through the container.
Claim 5
Dependent Claim
33 words
An apparatus according to claim 1 in which the means for causing liquid flow is a means for causing liquid to flow into the periphery of the space between plates and out axially.
Claim 6
Dependent Claim
41 words
An apparatus according to claim 2 in which one of the plates is provided with baffling means on its face to cause liquid to flow through an elongated path between the plates and means for precisely adjusting plate position and orientation.
Claim 7
Dependent Claim
13 words
An apparatus according to claim 2 in which the plates have smooth faces.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |