US3790140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for aerating water
Assignee: Individual
•
Filing: 1971-01-22
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Granted: 1974-02-05
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Expires: 1991-01-22
Abstract
Abstract Apparatus for aerating a stream of water under a natural pressure head that comprises a venturi including upper and lower gate members connected to the atmosphere for restricting the flow of water. One of the gate members is movable with respect to the other. A foraminous air diffuser is positioned between the upper and lower gate members. A screen is positioned downstream of the upper gate for retarding movement of the air bubbles produced to the water surface.
Inventors
- 👤 R Conway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:01
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1278; C02F3/1294; C02F7/00; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S261/00; Y10S261/75
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
421 words
An apparatus for aerating a stream of water, said apparatus comprising dam means extending between opposite banks of the stream of water for at least partially blocking a flow of water from an upstream side of said dam means to a downstream side of said dam means, said dam means including a first member, a second member cooperating with said first member to at least partially define an opening through which water passes in flowing from the upstream side of said dam means to the downstream side of said dam means, said first and second members including surface means for restricting the flow of water through said opening to increase the velocity and decrease the pressure of at least a portion of the water as it flows from the upstream side of said dam means to the downstream side of said dam means, means for moving said first member relative to said second member to vary the size of the opening and the rate of flow of water from the upstream side of said dam means to the downstream side of said dam means, said means for moving said members being operable to move at least one of said first and second members relative to the other between a closed condition blocking a flow of water from the upstream side of said dam means to the downstream side of said dam means and an open condition enabling water to flow from the upstream side of said dam means to the downstream side of said dam means, aeration means connected in fluid communication with the atmosphere and at least the portion of water which is subjected to an increase in velocity and decrease in pressure as it flows from the upstream side of said dam means to the downstream side of said dam means for conducting air to and diffusing air in the water, said aeration means including foraminous diffuser means located at the opening for dispersing in the water a flow of air which is at least partially induced by the decrease in pressure of water as it flows from the upstream side of said dam means to the downstream side of said dam means, and conduit means for conducting a flow of air to said foraminous diffuser means, said diffuser means being disposed in abutting engagement with said second member when said first and second members are in the closed condition and being spaced apart from said second member when said first and second members are in the open condition.
Claim 2
Independent Claim
421 words
An apparatus for aerating a stream of water, said apparatus comprising dam means extending between opposite banks of the stream of water for at least partially blocking a flow of water from an upstream side of said dam means to a downstream side of said dam means, said dam means including a first member, a second member cooperating with said first member to at least partially define an opening through which water passes in flowing from the upstream side of said dam means to the downstream side of said dam means, said first and second members including surface means for restricting the flow of water through said opening to increase the velocity and decrease the pressure of at least a portion of the water as it flows from the upstream side of said dam means to the downstream side of said dam means, means for moving said first member relative to said second member to vary the size of the opening and the rate of flow of water from the upstream side of said dam means to the downstream side of said dam means, said means for moving said members being operable to move at least one of said first and second members relative to the other between a closed condition blocking a flow of water from the upstream side of said dam means to the downstream side of said dam means and an open condition enabling water to flow from the upstream side of said dam means to the downstream side of said dam means, aeration means connected in fluid communication with the atmosphere and at least the portion of water which is subjected to an increase in velocity and decrease in pressure as it flows from the upstream side of said dam means to the downstream side of said dam means for conducting air to and diffusing air in the water, said aeration means including foraminous diffuser means located at the opening for dispersing in the water a flow of air which is at least partially induced by the decrease in pressure of water as it flows from the upstream side of said dam means to the downstream side of said dam means, and conduit means for conducting a flow of air to said foraminous diffuser means, said diffuser means being disposed in abutting engagement with said second member when said first and second members are in the closed condition and being spaced apart from said second member when said first and second members are in the open condition.
Claim 3
Dependent Claim
34 words
An apparatus as set forth in claim 1 further including access means for providing access to said diffuser means through said first member when said first and second members are in the closed condition.
Claim 4
Independent Claim
378 words
An apparatus for aerating a stream of water, said apparatus comprising dam means extending between opposite banks of the stream of water for at least partially blocking a flow of water from an upstream side of said dam means to a downstream side of said dam means, said dam means including a first member, a second member cooperating with said first member to at least partially define an opening through which water passes in flowing from the upstream side of said dam means to the downstream side of said dam means, said first and second members including surface means for restricting the flow of water through said opening to increase the velocity and decrease the pressure of at least a portion of the water as it flows from the upstream side of said dam means to the downstream side of said dam means, means for moving said first member relative to said second member to vary the side of the opening and the rate of flow of water from the upstream side of said dam means to the downstream side of said dam means, and aeration means connected in fluid communication with the atmosphere and at least the portion of water which is subjected to an increase in velocity and decrease in pressure as it flows from the upstream side of said dam means to the downstream side of said dam means for conducting air to and diffusing air in the water, said aeration means including foraminous diffuser means located at the opening for dispersing in the water a flow of air which is at least partially induced by the decrease in pressure of water as it flows from the upstream side of said dam means to the downstream side of said dam means, and conduit means for conducting a flow of air to said foraminous diffuser means, and screen means connected to and extending downstream from said first member for retarding movement of bubbles of air to the surface of the water after it flows from the upstream side of said dam means to the downstream side of said dam means, said screen means being movable with said first member relative to said second member upon the occurrence of relative movement between said first and second members.
Claim 5
Independent Claim
378 words
An apparatus for aerating a stream of water, said apparatus comprising dam means extending between opposite banks of the stream of water for at least partially blocking a flow of water from an upstream side of said dam means to a downstream side of said dam means, said dam means including a first member, a second member cooperating with said first member to at least partially define an opening through which water passes in flowing from the upstream side of said dam means to the downstream side of said dam means, said first and second members including surface means for restricting the flow of water through said opening to increase the velocity and decrease the pressure of at least a portion of the water as it flows from the upstream side of said dam means to the downstream side of said dam means, means for moving said first member relative to said second member to vary the side of the opening and the rate of flow of water from the upstream side of said dam means to the downstream side of said dam means, and aeration means connected in fluid communication with the atmosphere and at least the portion of water which is subjected to an increase in velocity and decrease in pressure as it flows from the upstream side of said dam means to the downstream side of said dam means for conducting air to and diffusing air in the water, said aeration means including foraminous diffuser means located at the opening for dispersing in the water a flow of air which is at least partially induced by the decrease in pressure of water as it flows from the upstream side of said dam means to the downstream side of said dam means, and conduit means for conducting a flow of air to said foraminous diffuser means, and screen means connected to and extending downstream from said first member for retarding movement of bubbles of air to the surface of the water after it flows from the upstream side of said dam means to the downstream side of said dam means, said screen means being movable with said first member relative to said second member upon the occurrence of relative movement between said first and second members.
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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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |