Patent US3758083A successfully refreshed from Google Patents.
US3758083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave-powered aerator
Assignee: Individual
•
Filing: 1971-12-30
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Granted: 1973-09-11
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Expires: 1991-12-30
Abstract
Abstract A system is disclosed for taking atmospheric air and forcing it to the bottom of a large body of water, such as a lake, using only the energy available in waves. A number of flexible chambers and rigid chambers are alternately interconnected to form a string extending down into the lake. A rigid chamber communicates with the atmosphere above the lake, and adjacent chambers are connected through a check valve which opens only when pressure in an upper chamber is greater than the pressure in a lower chamber. Pressure differentials in the water caused by waves forces the air into successively lower chambers. Air is ultimately discharged from the lowermost chamber.
Inventors
- 👤 W Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:28
CPC Classifications
C; C02; C02F; C02F7/00; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
137 words
A system for aerating a lake including a plurality of interconnected rigid and flexible chambers disposed in a string in alternate fashion, the uppermost chamber being a rigid chamber and communicating with the atmosphere above the lake, flotation means for holding the string in a generally upright position with the open upper mouth of the first rigid chamber held above the surface of the lake; unidirectional air flow means interconnecting adjacent chambers for permitting the downflow of air while preventing the upflow of air; and resilient means for urging the first flexible chamber in expanded condition; whereby a positive pressure differential will cause a flexible chamber to contract thereby expelling air into a lower rigid chamber and a negative pressure differential will cause a flexible chamber to expand thereby drawing air in from an upper rigid chamber.
Claim 2
Independent Claim
137 words
A system for aerating a lake including a plurality of interconnected rigid and flexible chambers disposed in a string in alternate fashion, the uppermost chamber being a rigid chamber and communicating with the atmosphere above the lake, flotation means for holding the string in a generally upright position with the open upper mouth of the first rigid chamber held above the surface of the lake; unidirectional air flow means interconnecting adjacent chambers for permitting the downflow of air while preventing the upflow of air; and resilient means for urging the first flexible chamber in expanded condition; whereby a positive pressure differential will cause a flexible chamber to contract thereby expelling air into a lower rigid chamber and a negative pressure differential will cause a flexible chamber to expand thereby drawing air in from an upper rigid chamber.
Claim 3
Dependent Claim
22 words
The system of claim 1 further comprising means for anchoring the lowermost chamber of said string to the bottom of the lake.
Claim 4
Dependent Claim
42 words
The system of claim 1 wherein said string includes a continuous flexible outer sheathing and each rigid chamber includes a cylindrical wall member spaced from adjacent ones of said rigid chambers and held to said outer sheathing by means of clamp means.
Claim 5
Dependent Claim
30 words
The system of claim 1 further comprising rain shield means for preventing rain from entering into the open mouth of the uppermost rigid chamber while permitting air to enter therein.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |