Patent US3228474A successfully refreshed from Google Patents.
US3228474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire extinguisher
Assignee: Individual
•
Filing: 1961-08-11
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Granted: 1966-01-11
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Expires: 1981-08-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles K Huthsing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:46
CPC Classifications
A; A62; A62C; A62C13/00; A62C13/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
AN IMPROVED FIRE EXTINGUISHER COMPRISING: A TANK; A PRESSURIZED CARTRIDGE SUPPORTED AND RETAINED WITHIN SAID TANK; A PUNCTURING MECHANISM SEALABLY COUPLED TO SAID TANK IN POSITION FOR MANUAL PUNCTURING OF SAID CARTRIDGE; A NORMALLY CLOSED CHECK VALVE COMMUNICATING THROUGH AND CONNECTED TO THE BOTTOM OF SAID TANK; AN OUTLET HOSE CONNECTED TO THE OUTLET OF SAID CHECK VALVE; AND, A U-SHAPED CARRYING HANDLE HAVING THE TERMINAL ENDS THEREOF CONNECTED, RESPECTIVELY, TO OPPOSITE SIDES OF SAID TANK, SAID HANDLE HAVING ITS ARCUATE BASE PORTION OF U-SHAPED CROSS SECTION TO RETAIN A PORTION OF SAID HOSE, WHEREBY THE REMAINDER OF THE HOSE MAY EXTEND UPWARDLY ALONG ONE SIDE AND DOWNWARDLY ALONG THE OTHER SIDE OF SAID TANK.
Claim 2
Dependent Claim
115 words
AN IMPROVED FIRE EXTINGUISHER COMPRISING: A TANK; A PRESSURIZED CARTRIDGE SUPPORTED AND RETAINED WITHIN SAID TANK; A PUNCTURING MECHANISM SEALABLY COUPLED TO SAID TANK IN POSITION FOR MANUAL PUNCTURING OF SAID CARTRIDGE; A NORMALLY CLOSED CHECK VALVE COMMUNICATING THROUGH AND CONNECTED TO THE BOTTOM OF SAID TANK; AN OUTLET HOSE CONNECTED TO THE OUTLET OF SAID CHECK VALVE; AND, A U-SHAPED CARRYING HANDLE HAVING THE TERMINAL ENDS THEREOF CONNECTED, RESPECTIVELY, TO OPPOSITE SIDES OF SAID TANK, SAID HANDLE HAVING ITS ARCUATE BASE PORTION OF U-SHAPED CROSS SECTION TO RETAIN A PORTION OF SAID HOSE, WHEREBY THE REMAINDER OF THE HOSE MAY EXTEND UPWARDLY ALONG ONE SIDE AND DOWNWARDLY ALONG THE OTHER SIDE OF SAID TANK.
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |