US3905049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toilets
Assignee: ELSAN Ltd
•
Filing: 1973-10-30
•
Granted: 1975-09-16
•
Expires: 1993-10-30
Abstract
Abstract A toilet comprising a toilet bowl, a receiving chamber beneath the bowl, the receiving chamber having a bottom of bowl-shape or funnel-shape with an outlet opening at its lowest point and having an enclosing wall at least a large part of which is of filter material, a pump chamber outside the enclosing wall, and a pump arranged to recirculate liquid from the pump chamber to the bowl for flushing.
Inventors
- 👤 John H Stokes
- 👤 Raymond Bondon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:06
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/016; B; B63; B63B; B63B29/00; B63B29/02; B63B29/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
A toilet comprising a toilet bowl, a receiving chamber beneath the bowl, the receiving chamber having a bottom of bowlshape with an outlet opening at its lowest point and having an enclosing wall at least a large part of which is of filter material, a pump chamber outside the enclosing wall, a pump of piston and cylinder type, with its axis vertical, having an intake lying at the lower end of the pump cylinder and within the pump chamber, a second-stage cylindrical filter entirely surrounding the pump and a third-stage filter protecting the intake, and means enabling the pump to recirculate liquid from the pump chamber to the bowl for flushing.
Claim 2
Dependent Claim
111 words
A toilet comprising a toilet bowl, a receiving chamber beneath the bowl, the receiving chamber having a bottom of bowlshape with an outlet opening at its lowest point and having an enclosing wall at least a large part of which is of filter material, a pump chamber outside the enclosing wall, a pump of piston and cylinder type, with its axis vertical, having an intake lying at the lower end of the pump cylinder and within the pump chamber, a second-stage cylindrical filter entirely surrounding the pump and a third-stage filter protecting the intake, and means enabling the pump to recirculate liquid from the pump chamber to the bowl for flushing.
Claim 3
Dependent Claim
111 words
A toilet comprising a toilet bowl; a receiving chamber beneath the bowl, the receiving chamber having a bottom of a bowl shape with an outlet opening at the lowest point thereof and having an enclosing wall, at least a large part of said enclosing wall being of filter material; the toilet bowl having a central downwardly opening outlet aperture therein, said central aperture being located directly above the outlet opening in the receiving chamber; a pump chamber located outside of the enclosing wall; at least a large part of said pump chamber being of filter material; and a pump for recirculating liquid from the pump chamber to the bowl for flushing.
Claim 4
Dependent Claim
111 words
A toilet comprising a toilet bowl; a receiving chamber beneath the bowl, the receiving chamber having a bottom of a bowl shape with an outlet opening at the lowest point thereof and having an enclosing wall, at least a large part of said enclosing wall being of filter material; the toilet bowl having a central downwardly opening outlet aperture therein, said central aperture being located directly above the outlet opening in the receiving chamber; a pump chamber located outside of the enclosing wall; at least a large part of said pump chamber being of filter material; and a pump for recirculating liquid from the pump chamber to the bowl for flushing.
References Cited (Backward Citations)
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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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |