Patent US5395592A successfully refreshed from Google Patents.
US5395592A
Expired / Lapsed
US
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Acoustic liquid processing device
Assignee: SOUND CHEERS Ltd
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Filing: 1993-10-04
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Granted: 1995-03-07
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Expires: 2013-10-04
Abstract
Abstract An acoustic liquid processing device in the form of a vessel having an interior wall which surround a process liquid. An electrostatic film transducer is attached to the interior wall to substantially envelop a selected volume of the process liquid. The transducer's acoustic impedance is approximately equal to that of the process liquid. The transducer is energized to subject the process liquid to acoustic vibration.
Inventors
- 👤 Brent Bolleman
- 👤 A. Bruce Dunwoody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:02
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/10; B06; B06B; B06B1/00; B06B1/02; B06B1/0292
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
72 words
An acoustic liquid processing device comprising: (a) a vessel having an interior wall for surrounding a process liquid having an acoustic impedance; (b) an electrostatic film transducer attached to said interior wall to substantially envelop a selected volume of said process liquid, said transducer having an acoustic impedance approximately equal to said process liquid acoustic impedance; and, (c) energizing means for energizing said transducer to subject said process liquid to acoustic vibration.
Claim 2
Dependent Claim
72 words
An acoustic liquid processing device comprising: (a) a vessel having an interior wall for surrounding a process liquid having an acoustic impedance; (b) an electrostatic film transducer attached to said interior wall to substantially envelop a selected volume of said process liquid, said transducer having an acoustic impedance approximately equal to said process liquid acoustic impedance; and, (c) energizing means for energizing said transducer to subject said process liquid to acoustic vibration.
Claim 3
Dependent Claim
15 words
An acoustic liquid processing device as defined in claim 1, wherein said vessel is cylindrical.
Claim 4
Dependent Claim
17 words
An acoustic liquid processing device as defined in claim 2, wherein said vessel comprises a single cylinder.
Claim 5
Dependent Claim
56 words
An acoustic liquid processing device as defined in claim 2, wherein: (a) said vessel comprises concentric inner and outer cylinders separated by an annular region containing a coupling liquid; (b) said inner cylinder has an acoustic impedance approximately equal to said process liquid acoustic impedance; and, (c) said interior wall comprises said inner cylinder's outer surface.
Claim 6
Dependent Claim
20 words
An acoustic liquid processing device as defined in claim 2 or 4, wherein said transducer further comprises a multi-layer structure.
Claim 7
Dependent Claim
97 words
An acoustic liquid processing device as defined in claim 2 or 4, wherein said transducer further comprises: (a) opposed first and second plates electrically coupled to said energizing means for application of an electrical potential between said plates; and, (b) a compliant dielectric material disposed between said plates and in contact therewith; said dielectric material having a plurality of pockets of approximately average depth "d" such that, for a gas existing within said pockets at a pressure "P", the product Pd is less than one-half the value required to achieve the minimum breakdown voltage of said gas.
Claim 8
Dependent Claim
94 words
An acoustic liquid processing device as defined in claim 2 or 4, wherein said transducer further comprises: (a) opposed first and second plates electrically coupled to said energizing means for application of an electrical potential between said plates; and, (b) a compliant dielectric material disposed between sad plates and in contact therewith for separating said plates by a distance "d" and for allowing a gas to exist between said plates at a pressure "P", wherein the product Pd is less than one-half the value required to achieve the minimum breakdown voltage of said gas.
Claim 9
Dependent Claim
43 words
An acoustic liquid processing device as defined in claim 2 or 4, further comprising: (a) a duct positioned within said interior wall to confine said process liquid to a selected volume; and, (b) a coupling liquid between said duct and said interior wall.
Claim 10
Dependent Claim
24 words
An acoustic liquid processing device as defined in claim 8, wherein said coupling liquid has a cavitation threshold exceeding said process liquid's cavitation threshold.
Claim 11
Dependent Claim
35 words
An acoustic liquid processing device as defined in claim 2 or 4, wherein said acoustic vibration is of an intensity sufficient to produce cavitation within said process liquid at points removed from said interior wall.
Claim 12
Dependent Claim
25 words
An acoustic liquid processing device as defined in claim 1, wherein said acoustic vibration is a resonant mode of said process liquid in said vessel.
Claim 13
Dependent Claim
22 words
An acoustic liquid processing device as defined in claim 2, further comprising an ultraviolet light source axially aligned within said interior wall.
Claim 14
Dependent Claim
21 words
An acoustic liquid processing device as defined in claim 2, further comprising a solid catalyst axially aligned within said interior wall.
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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) | 1998-03-06 | 1998-09-05 | 1999-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-06 | 2002-09-05 | 2003-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-06 | 2006-09-05 | 2007-03-07 | $7700.00 | Window Closed / Lapsed |