US3343178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump and filter apparatus for a chemical toilet
Assignee: Monogram Industries Inc
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Filing: 1966-02-01
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Granted: 1967-09-26
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Expires: 1986-02-01
Abstract
No abstract record available.
Inventors
- 👤 Norbert J Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:01
CPC Classifications
A; A47; A47K; A47K11/00; A47K11/02; A47K11/03; A47K11/035; Y; Y02; Y02A; Y02A50/00; Y02A50/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
IN A SELF-CONTAINED TOILET SYSTEM THAT INCLUDES A TOILET BOWL AND A TANK FOR HOLDING THE LIQUID OF THE SYSTEM, SELF-CLEANING PUMP-AND-FILTER APPARATUS FOR CIRCULATING A QUANTITY OF RELATIVELY CLEAR LIQUID FROM THE TANK TO THE BOWL FOR RETURN TO THE TANK, SAID APPARATUS COMPRISING: REVERSIBLE PUMP MEANS HAVING AN INLET, SAID PUMP MEANS BEING POSITIONED, CONSTRUCTED AND ARRANGED TO DRAW LIQUID INTO SAID INLET AND TO DELIVER THE LIQUID IN THE SAME PREDETERMINED DIRECTION FROM THE TANK TO THE BOWL FOR EITHER DIRECTION OF ITS OPERATION, A REVERSIBLE FILTER ARRANGEMENT INCLUDING A FILTER MEANS DISPOSED OUTWARDLY OF SAID PUMP INLET AND FILTER WIPER MEANS DISPOSED IMMEDIATELY OUTWARDLY OF SAID FILTER MEANS, SAID FILTER ARRANGEMENT INCLUDING MEANS SUPPORTING SAID FILTER MEANS AND SAID WIPER MEANS FOR
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |