US3214772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hopper for mechanical seal toilets
Assignee: Mansfield Sanitary Inc
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Filing: 1964-10-15
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Granted: 1965-11-02
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Expires: 1984-10-15
Abstract
No abstract record available.
Inventors
- 👤 Herbert B Roberts
- 👤 Howard A Fulton
- 👤 Vaughn D Flinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:29
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/24; E03D1/28; E03D1/286; E03D11/00; E03D11/02; E03D11/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A HOPPER FOR A MECHANICAL-SEAL TOILET HAVING A TUBULAR DISCHARGE THROAT PROVIDED WITH A VALVE OPENING AT ITS UPPER END AND A HOPPER SEAL VALVE FOR NORMALLY CLOSING SAID HOPPER COMPRISING: A RECEIVING BOWL HAVING A TUBULAR FLUSHING RIM PROVIDED WITH RIM-FLUSH APERTURES, SAID BOWL HAVING IN ITS BOTTOM AN OUTLET FOR COUPLING TO SAID UPPER AND OF THE THROAT SO AS TO BE NORMALLY CLOSED BY SAID HOPPER SEAL VALVE; MEANS INTEGRAL WITH SAID BOWL DEFINING A PLENUM CHAMBER EXTERNALLY OF SAID BOWL, SAID CHAMBER EXTENDING TO THE LEVEL OF SAID RIM AND COMMUNICATING THEREWITH FOR DELIVERING WATER TO SAID RIM FOR FLUSHING SAID BOWL; AND MEANS PROVIDING FOR RESTRICTED BLEED OF WATER FROM SAID PLENUM CHAMBER INTO THE LOWER AREA OF SAID BOWL AFTER COMPLETION OF A FLUSING OPERATION, WHEREBY TO DEPOSIT A BODY OF RETAINED WATER IN SAID BOWL.
Claim 2
Dependent Claim
142 words
A HOPPER FOR A MECHANICAL-SEAL TOILET HAVING A TUBULAR DISCHARGE THROAT PROVIDED WITH A VALVE OPENING AT ITS UPPER END AND A HOPPER SEAL VALVE FOR NORMALLY CLOSING SAID HOPPER COMPRISING: A RECEIVING BOWL HAVING A TUBULAR FLUSHING RIM PROVIDED WITH RIM-FLUSH APERTURES, SAID BOWL HAVING IN ITS BOTTOM AN OUTLET FOR COUPLING TO SAID UPPER AND OF THE THROAT SO AS TO BE NORMALLY CLOSED BY SAID HOPPER SEAL VALVE; MEANS INTEGRAL WITH SAID BOWL DEFINING A PLENUM CHAMBER EXTERNALLY OF SAID BOWL, SAID CHAMBER EXTENDING TO THE LEVEL OF SAID RIM AND COMMUNICATING THEREWITH FOR DELIVERING WATER TO SAID RIM FOR FLUSHING SAID BOWL; AND MEANS PROVIDING FOR RESTRICTED BLEED OF WATER FROM SAID PLENUM CHAMBER INTO THE LOWER AREA OF SAID BOWL AFTER COMPLETION OF A FLUSING OPERATION, WHEREBY TO DEPOSIT A BODY OF RETAINED WATER IN SAID BOWL.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |