US4086057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic disinfection system
Assignee: Individual
•
Filing: 1976-07-28
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Granted: 1978-04-25
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Expires: 1996-07-28
Abstract
Abstract In a system for the disinfection of liquids containing live bacteria, the liquid is directed through a nozzle onto an external surface of an ultrasonic transducer whereby said liquid is subjected to ultrasonic energy at a specific frequency and power for a predetermined period of time so as to achieve a desired and controlled degree of kill of said bacteria.
Inventors
- 👤 William Clinton Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:31
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/02; A61L2/025; C; C02; C02F; C02F1/00; C02F1/34; C02F1/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
The method of disinfecting a liquid comprising the steps of continuously discharging a bacteria-containing liquid through a nozzle into the open atmosphere to produce a solid jet of such liquid; directing the liquid jet against an ultrasonically vibrating surface which transversely intercepts the entire cross-section of said jet to impart ultrasonic wave energy lengthwise into said jet; the velocity and cross-section area of said jet and the wave energy emanating from said surface being of such values that at least 400 joules/liter is imparted to the treated liquid.
Claim 2
Independent Claim
88 words
The method of disinfecting a liquid comprising the steps of continuously discharging a bacteria-containing liquid through a nozzle into the open atmosphere to produce a solid jet of such liquid; directing the liquid jet against an ultrasonically vibrating surface which transversely intercepts the entire cross-section of said jet to impart ultrasonic wave energy lengthwise into said jet; the velocity and cross-section area of said jet and the wave energy emanating from said surface being of such values that at least 400 joules/liter is imparted to the treated liquid.
Claim 3
Dependent Claim
31 words
The method of claim 1 wherein said nozzle and surface are spaced apart a distance exceeding the length of visible bubbling agitation of said jet from said surface toward said nozzle.
Claim 4
Dependent Claim
31 words
The method of claim 1 wherein said nozzle is oriented to direct the liquid jet vertically upward against said surface for gravity discharge therefrom of an umbrella-shaped sheet of disinfected liquid.
Claim 5
Dependent Claim
21 words
The method of claim 1 wherein the power output at said surface is no greater than about 25 watts/cm 2 .
Claim 6
Dependent Claim
58 words
The method of claim 3 wherein said nozzle and surface are spaced apart a distance several times the diameter of the nozzle orifice to provide a jet of progressively increasing cross-section diameter upwardly from said nozzle; and wherein said surface is of diameter approximately equal to the cross-section diameter of said liquid jet where intercepted by said surface.
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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) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |