US3959829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvements in and relating to dry closets
Assignee: Gustavsbergs Fabriker AB
•
Filing: 1975-02-14
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Granted: 1976-06-01
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Expires: 1995-02-14
Abstract
Abstract A closet for composting waste material by biological decomposition processes comprises a primary chamber charged with a suitable compound. Means are provided for stirring the bed to break up the bed so as to ensure sufficient aeration of same. There are further separate heat emitting means. The primary chamber has a normally closed discharge port on a side wall. There is provided a secondary chamber constituting a separate unit and the discharge port constitute communication means between the primary chamber and the secondary chamber. Said secondary chamber has separate actuatable heat emitting means.
Inventors
- 👤 Peter Nordgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:50
CPC Classifications
A; A47; A47K; A47K11/00; A47K11/02; Y; Y02; Y02A; Y02A50/00; Y02A50/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
169 words
A closet for the biological decomposition of human feces and urine and for the pasteurization of the decomposition product thereof, which comprises: a collecting vessel having an elevatable lid; a primary chamber forming the lower part of said collecting vessel, said chamber having a wholly closed bottom and being adapted to contain a bed of material adapted to biologically disintegrate feces and urine therein; controllable means adapted to heat bed material in said chamber; means for ventilating said chamber; mechanical means within said chamber adapted to mix feces and urine with said bed material and for aerating and moving the resulting mixture towards a secondary chamber; a removable smaller secondary chamber adjacent to and at substantially the same level as said primary chamber; a normally closed but openable port between said chambers adapted to permit substantially horizontal transfer of bed material from said primary chamber to said secondary chamber; and independently controllable heating means in said secondary chamber adapted to heat bed material in said chamber to pasteurizing temperature.
Claim 2
Dependent Claim
169 words
A closet for the biological decomposition of human feces and urine and for the pasteurization of the decomposition product thereof, which comprises: a collecting vessel having an elevatable lid; a primary chamber forming the lower part of said collecting vessel, said chamber having a wholly closed bottom and being adapted to contain a bed of material adapted to biologically disintegrate feces and urine therein; controllable means adapted to heat bed material in said chamber; means for ventilating said chamber; mechanical means within said chamber adapted to mix feces and urine with said bed material and for aerating and moving the resulting mixture towards a secondary chamber; a removable smaller secondary chamber adjacent to and at substantially the same level as said primary chamber; a normally closed but openable port between said chambers adapted to permit substantially horizontal transfer of bed material from said primary chamber to said secondary chamber; and independently controllable heating means in said secondary chamber adapted to heat bed material in said chamber to pasteurizing temperature.
Claim 3
Dependent Claim
25 words
A closet according to claim 1, wherein said secondary chamber is at the front of said closet and has the height of a foot rest-box.
Claim 4
Dependent Claim
35 words
A closet according to claim 1, wherein said mechanical means are adapted to tumble said bed material towards the front of said closet, and said secondary chamber is positioned at the front of said closet.
Claim 5
Dependent Claim
36 words
A closet according to claim 1, wherein said primary chamber heating means are positioned underneath the bottom of said chamber and are adapted to maintain substantially all of said bed material at approximately the same temperature.
Claim 6
Dependent Claim
13 words
A closet according to claim 1, wherein the heating means are electrical foils.
Claim 7
Dependent Claim
19 words
A closet according to claim 1, wherein at least one of said heating means is controlled by a thermostat.
Claim 8
Dependent Claim
18 words
A closet according to claim 1, wherein said ventilating means is a ventilation duct containing an exhaust fan.
Claim 9
Dependent Claim
24 words
A closet according to claim 1, wherein a the top portion of said collecting vessel has a valved aperture adapted to control said ventilation.
Claim 10
Dependent Claim
47 words
A closet according to claim 7 wherein the fan is controlled by a moisture responsive switch adapted to turn said fan on when the moisture content of bed material in said primary chamber is high and to cease actuating said fan when said moisture content is low.
References Cited (Backward Citations)
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Cited
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Cited
US3916456A
Cited
US3808609A
Cited
US3840907A
Cited
US3843522A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |