US3761196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cavitation control system
Assignee: Individual
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Filing: 1971-08-26
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Granted: 1973-09-25
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Expires: 1991-08-26
Abstract
Abstract Subject invention relates to a novel and improved apparatus for minimizing the phenomenon of cavitation and noise in a liquid circulating energy conversion device such as a water brake. Pressurized air or a suitable gas is mixed with the liquid that is circulated in the device so as to increase the pressure throughout the circulating liquid above the point where it will boil and cause cavitation. Pressure of the air or gas is automatically controlled by the amplitude of the noise in the device when cavitation occurs.
Inventors
- 👤 E Weinert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:09
CPC Classifications
F; F16; F16D; F16D57/00; F16D57/02; F04; F04D; F04D29/00; F04D29/66; F04D29/669
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
A liquid circulatory energy conversion device comprising: a generally cylindrical casing; a rotor section mounted in said casing, said rotor section having a plurality of radially disposed impeller vanes and a plurality of radial surfaces; a stator section secured to the casing adjacent each radial surface of the rotor section, said stator section having a plurality of stator vanes that extend outwardly and radially from the interior of said casing; means for introducing a liquid into said casing in the region between adjacent portions of said rotor and stator sections; means for withdrawing said liquid from said casing; and means for reducing cavitation and noise within said casing during operation of said device including gas pressure control means sensitive to predetermined frequencies of noise created by cavitation in said casing for mixing a predetermined amount of gas at a predetermined automatically controlled pressure with said liquid.
Claim 2
Dependent Claim
146 words
A liquid circulatory energy conversion device comprising: a generally cylindrical casing; a rotor section mounted in said casing, said rotor section having a plurality of radially disposed impeller vanes and a plurality of radial surfaces; a stator section secured to the casing adjacent each radial surface of the rotor section, said stator section having a plurality of stator vanes that extend outwardly and radially from the interior of said casing; means for introducing a liquid into said casing in the region between adjacent portions of said rotor and stator sections; means for withdrawing said liquid from said casing; and means for reducing cavitation and noise within said casing during operation of said device including gas pressure control means sensitive to predetermined frequencies of noise created by cavitation in said casing for mixing a predetermined amount of gas at a predetermined automatically controlled pressure with said liquid.
Claim 3
Dependent Claim
81 words
A cavitation control system comprising: an energy conversion device having a rotor and stator; liquid conducting means for circulating a liquid through said energy conversion device; and gas pressure means connected to said liquid conducting means for mixing a predetermined amount of gas at an automatically controlled pressure with said liquid, said gas pressure control means has filtering means sensitive to predetermined frequencies of noise created by cavitation for controlling the mixing of said predetermined amount of gas with said liquid.
Claim 4
Dependent Claim
81 words
A cavitation control system comprising: an energy conversion device having a rotor and stator; liquid conducting means for circulating a liquid through said energy conversion device; and gas pressure means connected to said liquid conducting means for mixing a predetermined amount of gas at an automatically controlled pressure with said liquid, said gas pressure control means has filtering means sensitive to predetermined frequencies of noise created by cavitation for controlling the mixing of said predetermined amount of gas with said liquid.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |