Patent US3776383A successfully refreshed from Google Patents.
US3776383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage treatment venting system
Assignee: HARGRAVES BEATRICE A
•
Filing: 1971-04-19
•
Granted: 1973-12-04
•
Expires: 1991-04-19
Abstract
Abstract A portable toilet facility includes a plurality of seriesconnected aerobic digestion tanks within a walled enclosure. Venting of the air spaces of the tanks is accomplished with a vane-type air scoop which faces into the wind and conducts air to one of the air spaces, an exhaust vent conduit extending from one of the other air spaces to the exterior of the enclosure.
Inventors
- 👤 W Hargraves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:16
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1236; C02F3/1242; E; E03; E03D; E03D9/00; E03D9/04; E03D9/05; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S4/00; Y10S4/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
229 words
An aerobic digestion treatment system for purifying organic waste material dissolved in or dispersed in water comprising: a main digestion tank defining a lower liquid-containing portion and an overlying air space and having inlet means for receiving undigested raw sewage; a plurality of secondary digestion tanks each having a lower liquid-containing portion and an overlying air space; liquid connecting means between said main digestion tank and one of said secondary digestion tanks and serially between said secondary digestion tanks for passing essentially solids-free liquid sequentially through said tanks, the air spaces of all said tanks being in communication with each other; air diffuser means for introducing air into the lower portion of each tank for aserating and mixing the liquid contents of each of said tanks; a walled enclosure surrounding said tanks; and means for continuously passing a sweep of atmospheric air through all said air spaces to remove odor and stale air containing water vapor and to cause evaporation of water from the surfaCe of the liquid contents of each stage, said means including an air scoop for taking in atmospheric air from outside said walled enclosure and for delivering the air to the air space of one of said tanks and a vent conduit extending from the air space of a tank remote from said one tank to the atmosphere at a location outside said walled enclosure.
Claim 2
Dependent Claim
229 words
An aerobic digestion treatment system for purifying organic waste material dissolved in or dispersed in water comprising: a main digestion tank defining a lower liquid-containing portion and an overlying air space and having inlet means for receiving undigested raw sewage; a plurality of secondary digestion tanks each having a lower liquid-containing portion and an overlying air space; liquid connecting means between said main digestion tank and one of said secondary digestion tanks and serially between said secondary digestion tanks for passing essentially solids-free liquid sequentially through said tanks, the air spaces of all said tanks being in communication with each other; air diffuser means for introducing air into the lower portion of each tank for aserating and mixing the liquid contents of each of said tanks; a walled enclosure surrounding said tanks; and means for continuously passing a sweep of atmospheric air through all said air spaces to remove odor and stale air containing water vapor and to cause evaporation of water from the surfaCe of the liquid contents of each stage, said means including an air scoop for taking in atmospheric air from outside said walled enclosure and for delivering the air to the air space of one of said tanks and a vent conduit extending from the air space of a tank remote from said one tank to the atmosphere at a location outside said walled enclosure.
Claim 3
Dependent Claim
89 words
A system as in claim 1 wherein said air scoop comprises a vertical conduit having a lower end in communication with the air space of said one tank, an elbow having a horizontally facing open upper end and a vertically facing open lower end which is swivelly attached to the upper end of said vertical conduit for swinging movement about the axis of said conduit; and vane means associated with said elbow for reacting with the wind to cause said horizontally facing open end to face into the wind.
Claim 4
Dependent Claim
63 words
A system as in claim 2 wherein said elbow is swivelly attached to said vertical conduit by means of a fixed vertical pin disposed on the axis of said vertical conduit, said pin passing through an aperture in a bracket fixed to said elbow, and the upper end of said pin engaging the lower surface of a support structure fixed to said elbow.
Claim 5
Dependent Claim
40 words
A system as in claim 1 wherein said liquid connecting means between tanks includes a quiet liquid chamber formed within each tank and a conduit leading from the quiet liquid chamber to the aerated portion of the next downstream tank.
Claim 6
Dependent Claim
208 words
A toilet facility for receiving and purifying organic waste material comprising: a main digestion tank defining a lower water-containing portion and an overlying air space and having inlet means for receiving organic waste material; a plurality of secondary digestion tanks each having a lower water-containing portion and an overlying air space; liquid connecting means between said main digestion tank and one of said secondary digestion tanks and serially between said secondary digestion tanks for passing essentially solids-free liquid sequentially through said tanks, said liquid connecting means including a quiet liquid chamber formed within each tank and a conduit leading from the quiet liquid chamber to the next downstream tank, the air spaces of all said tanks being in communication with each other; air diffuser means for introducing air into the lower portion of each tank for aerating and mixing the liquid contents of each tank; a walled enclosure surrounding said tanks; means for removing odor and stale air containing water vapor and to cause evaporation of water from the surface of the liquid contents of each stage, said means including atmospheric air inlet means and vent means connected at remote locations to said air spaces for continuously passing a sweep of atmospheric air through all said air spaces.
Claim 7
Dependent Claim
208 words
A toilet facility for receiving and purifying organic waste material comprising: a main digestion tank defining a lower water-containing portion and an overlying air space and having inlet means for receiving organic waste material; a plurality of secondary digestion tanks each having a lower water-containing portion and an overlying air space; liquid connecting means between said main digestion tank and one of said secondary digestion tanks and serially between said secondary digestion tanks for passing essentially solids-free liquid sequentially through said tanks, said liquid connecting means including a quiet liquid chamber formed within each tank and a conduit leading from the quiet liquid chamber to the next downstream tank, the air spaces of all said tanks being in communication with each other; air diffuser means for introducing air into the lower portion of each tank for aerating and mixing the liquid contents of each tank; a walled enclosure surrounding said tanks; means for removing odor and stale air containing water vapor and to cause evaporation of water from the surface of the liquid contents of each stage, said means including atmospheric air inlet means and vent means connected at remote locations to said air spaces for continuously passing a sweep of atmospheric air through all said air spaces.
Claim 8
Dependent Claim
25 words
A toilet facility as in claim 5 wherein said air inlet means includes a vane-type air scoop which swings to face into the prevailing wind.
Claim 9
Dependent Claim
30 words
A toilet facility as in claim 5 wherein said vent means includes a draft-inducing device which effects a reduced pressure which tends to draw ambient air into said air spaces.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |