Patent US3344800A successfully refreshed from Google Patents.
US3344800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closet tank fitting
Assignee: American Radiator and Standard Sanitary Corp
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Filing: 1964-07-08
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Granted: 1967-10-03
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Expires: 1984-07-08
Abstract
No abstract record available.
Inventors
- 👤 Richard G Parkison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:14
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/02; E; E03; E03D; E03D11/00; Y; Y10; Y10T; Y10T137/00; Y10T137/3149; Y10T137/3185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A WATER CLOSET TANK REFILL FITTING COMPRISING: (A) A TANK REFILL TUBE, SAID REFILL TUBE HAVING AN OPEN LOWER END, AND AN OUTLET MEANS BETWEEN SAID UPPER AND LOWER ENDS AND DISPOSED TANGENTIALLY TO SAID TUBE; AND (B) A BACKFLOW PREVENTER, SAID BACKFLOW PREVENTER BEING DISPOSED AT THE UPPER END OF SAID REFILL TUBE AND HAVING AN ANNULAR MEMBER CIRCUMSCRIBING SAID UPPER END OF SAID TUBE AND FORMING A HOLLOW SWIRL CHAMBER HAVING A CLOSED LOWER END AND AN OPEN UPPER END, FLUID INLET MEANS PROXIMATE SID CLOSED LOWER END AND DISPOSED TANGENTIALLY RELATIVE TO SAID HOLLOW CHAMBER, AND AN INWARDLY AND DOWNWARDLY EXTENDING DOWNSPOUT EXTENDING FROM THE UPPER END OF SAID ANNULAR MEMBER TO A POSITION PROXIMATE THE UPPER END OF SAID REFILL TUBE, THE OUTSIDE DIAMETER OF SAID DOWNSPOUT BEING LESS THAN THE INSIDE DIAMETER OF SAID REFILL TUBE.
Claim 2
Dependent Claim
141 words
A WATER CLOSET TANK REFILL FITTING COMPRISING: (A) A TANK REFILL TUBE, SAID REFILL TUBE HAVING AN OPEN LOWER END, AND AN OUTLET MEANS BETWEEN SAID UPPER AND LOWER ENDS AND DISPOSED TANGENTIALLY TO SAID TUBE; AND (B) A BACKFLOW PREVENTER, SAID BACKFLOW PREVENTER BEING DISPOSED AT THE UPPER END OF SAID REFILL TUBE AND HAVING AN ANNULAR MEMBER CIRCUMSCRIBING SAID UPPER END OF SAID TUBE AND FORMING A HOLLOW SWIRL CHAMBER HAVING A CLOSED LOWER END AND AN OPEN UPPER END, FLUID INLET MEANS PROXIMATE SID CLOSED LOWER END AND DISPOSED TANGENTIALLY RELATIVE TO SAID HOLLOW CHAMBER, AND AN INWARDLY AND DOWNWARDLY EXTENDING DOWNSPOUT EXTENDING FROM THE UPPER END OF SAID ANNULAR MEMBER TO A POSITION PROXIMATE THE UPPER END OF SAID REFILL TUBE, THE OUTSIDE DIAMETER OF SAID DOWNSPOUT BEING LESS THAN THE INSIDE DIAMETER OF SAID REFILL TUBE.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |