Patent US4166791A successfully refreshed from Google Patents.
US4166791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage gas collection reservoir
Assignee: Individual
•
Filing: 1977-08-04
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Granted: 1979-09-04
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Expires: 1997-08-04
Abstract
Abstract A sewage gas collection reservoir is provided with a valve and distribution system. Combustible gases are produced by anaerobic bacteria in mixtures of organic matter which are trapped by the cone shaped reservoir at the top of the mixture from which the gas is drawn past a valve, then past a water trap, then past an activated charcoal filter and fed into an ordinary household gas line by the vacuum created by the flow of the household gas supply. A one way valve is provided at the activated charcoal filter to prevent a reverse flow into the system and reservoir.
Inventors
- 👤 Mark C. Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:09
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/04; F16K24/042; F16K24/044; C; C02; C02F; C02F3/00; C02F3/28; C02F3/2806; Y; Y02; Y02E; Y02E50/00; Y02E50/30; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
126 words
A sewage gas collection reservoir comprising: a. a gas collecting reservoir capable of being contained within the walls of a sewage tank, b. support rods connected to said gas collecting reservoir, anchoring said reservoir in a sewage containing tank, c. said reservoir containing a top port, the opening of said top port which is regulated by a float valve which is capable of preventing the sewage level from passing through said top port, d. gas transport tubing connecting said top port to a terminal fixture, at said terminal fixture, where gas which is received from said tubing is capable of being fed into a gas line, e. said tubing containing a one-way valve which is capable of preventing the back flow of gas into said reservoir.
Claim 2
Dependent Claim
126 words
A sewage gas collection reservoir comprising: a. a gas collecting reservoir capable of being contained within the walls of a sewage tank, b. support rods connected to said gas collecting reservoir, anchoring said reservoir in a sewage containing tank, c. said reservoir containing a top port, the opening of said top port which is regulated by a float valve which is capable of preventing the sewage level from passing through said top port, d. gas transport tubing connecting said top port to a terminal fixture, at said terminal fixture, where gas which is received from said tubing is capable of being fed into a gas line, e. said tubing containing a one-way valve which is capable of preventing the back flow of gas into said reservoir.
Claim 3
Dependent Claim
68 words
A sewage gas collection reservoir as defined in claim 1 wherein said float valve comprises a cylindrical case containing a double spheroid float, said float comprised of a lower sphere which rises with a rise of the liquid, connected to an upper sphere which is capable of being forced to rest against a valve seal and is capable of preventing the flow of gas past said valve seal.
Claim 4
Dependent Claim
43 words
A sewage gas collection reservoir as defined in claim 1 wherein said terminal fixture comprises a gas line which narrows at its connection with said transport tubing to cause a gas flow at said connection from said transport tubing into said gas line.
References Cited (Backward Citations)
US1717100A
Cited
US2541630A
Cited
US3338826A
Cited
US3383309A
Cited
US3340887A
Cited
US3435841A
Cited
US3788047A
Cited
US3981803A
Cited
US3933628A
Cited
US4050907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-03 | 1983-03-05 | 1983-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-03 | 1987-03-05 | 1987-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-03 | 1991-03-05 | 1991-09-04 | $7700.00 | Window Closed / Lapsed |