US3662888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recirculating toilet system and filter therefor
Assignee: Monogram Industries Inc
•
Filing: 1971-04-29
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Granted: 1972-05-16
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Expires: 1991-04-29
Abstract
Abstract A portable toilet system of the recirculating type is provided with a perforated metal filter of a size and open area relative to the container or tank to provide for a minimal flow rate of liquid from the tank to the filter interior. This prevents movement of waste products and paper which would tend to block or close the openings of the filter when the system is activated; nevertheless, the filter is simply constructed and economical to manufacture and assemble.
Inventors
- 👤 James Morgan Kemper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:36
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/016; Y; Y10; Y10S; Y10S4/00; Y10S4/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
199 words
A recirculating toilet system comprising: an outer cabinet; a container connected to and positioned within said cabinet for receiving liquids and waste products; a bowl assembly connected to and positioned within said cabinet; flushing means connected to said bowl assembly for applying flushing liquid through said bowl assembly; a perforated metal filter positioned within said container, said filter providing for a very low flow rate; and means for communicating said flushing means and said filter, and said flushing means and said bowl assembly; said perforated metal filter comprising a housing having perforated walls and an interior space, said housing being of a size and open area to create a minimal flow of liquid from said container into said interior space when said flushing means are activated; said interior space, flushing means capacity, and container size being related to provide a flow rate of liquid into said interior space when said flushing means are activated of approximately 38.5 cubic inches per second; said perforated walls being approximately 45 percent open; the perforations of said walls being approximately 0.046 inches in diameter; and said housing having six walls and including legs to support the filter above the bottom of said container.
Claim 2
Dependent Claim
199 words
A recirculating toilet system comprising: an outer cabinet; a container connected to and positioned within said cabinet for receiving liquids and waste products; a bowl assembly connected to and positioned within said cabinet; flushing means connected to said bowl assembly for applying flushing liquid through said bowl assembly; a perforated metal filter positioned within said container, said filter providing for a very low flow rate; and means for communicating said flushing means and said filter, and said flushing means and said bowl assembly; said perforated metal filter comprising a housing having perforated walls and an interior space, said housing being of a size and open area to create a minimal flow of liquid from said container into said interior space when said flushing means are activated; said interior space, flushing means capacity, and container size being related to provide a flow rate of liquid into said interior space when said flushing means are activated of approximately 38.5 cubic inches per second; said perforated walls being approximately 45 percent open; the perforations of said walls being approximately 0.046 inches in diameter; and said housing having six walls and including legs to support the filter above the bottom of said container.
Claim 3
Dependent Claim
166 words
A recirculating toilet system comprising: an outer cabinet a container connected to and positioned within said cabinet for receiving liquids and waste products; a bowl assembly connected to and positioned within said cabinet; flushing means connected to said bowl assembly for applying flushing liquid through said bowl assembly; a perforated metal filter positioned within said container, said filter providing for a very low flow rate; means for communicating said flushing means and said filter, and said flushing means and said bowl assembly, said perforated metal filter comprising a separate enclosure having perforated walls and an interior space; support means for supporting said enclosure filter above the bottom of said container; the interior space within said filter enclosure bEing at least twice as large as the volume of said bowl and the interior volume of the container being sufficiently greater than that of the filter enclosure to retain the major portion of the solid waste products out of contact with the filter enclosure during each flushing operation.
Claim 4
Dependent Claim
166 words
A recirculating toilet system comprising: an outer cabinet a container connected to and positioned within said cabinet for receiving liquids and waste products; a bowl assembly connected to and positioned within said cabinet; flushing means connected to said bowl assembly for applying flushing liquid through said bowl assembly; a perforated metal filter positioned within said container, said filter providing for a very low flow rate; means for communicating said flushing means and said filter, and said flushing means and said bowl assembly, said perforated metal filter comprising a separate enclosure having perforated walls and an interior space; support means for supporting said enclosure filter above the bottom of said container; the interior space within said filter enclosure bEing at least twice as large as the volume of said bowl and the interior volume of the container being sufficiently greater than that of the filter enclosure to retain the major portion of the solid waste products out of contact with the filter enclosure during each flushing operation.
Claim 5
Dependent Claim
27 words
In the system of claim 2, vent means coupling the interior of said filter with air at ambient pressure to limit the pressure differential across said filter.
Claim 6
Dependent Claim
39 words
In the system of claim 2, said filter walls being about 45 percent open; the perforations through said walls being about 0.046 inches in diameter; and said filter being in the form of a six sided rectangularly shaped basket.
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |