Patent US3172478A successfully refreshed from Google Patents.
US3172478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire extinguisher
Assignee: Individual
•
Filing: 1963-07-19
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Granted: 1965-03-09
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Expires: 1983-07-19
Abstract
No abstract record available.
Inventors
- 👤 Henry L Giclas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:00
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/0009; A62C99/0018; A62C99/0027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A FIRE EXTINGUISHER ATTACHMENT FOR A CYLINDRICAL PRESSURIZED FLUID METAL CONTAINER LIPPED AT ONE END, COMPRISING: A HOLLOW PLUNGER, SHARPENED AT ONE END AND RESTRICTIVELY APERTURED AND ADAPTED AT ITS OTHER END TO RECEIVE IMPACT FOR URGING THE SHARPENED END THROUGH THE END WALL OF SAID CONTAINER, SAID PLUNGER FURTHER HAVING A SHOULDER NEAR ITS OTHER END AND AN ANNULAR FLANGE NEAR ITS SHARPENED END; AND A RESILIENT CAP ADAPTED TO FIT SNUGLY OVER THE LIPPED END OF SAID CONTAINER, RETAINING THE PLUNGER AT ITS SHOULDER BY MEANS OF AN APERTURE, SAID CAP INCLUDING A DIAMETRAL RIGID MEMBER RECEIVING THE PLUNGER NEAR ITS SHARPENED END THROUGH AN APERTURE LARGE ENOUGH TO CLEAR THE FLANGE, SAID FLANGE BEING ADAPTED TO PASS EASILY THROUGH THE END WALL OF THE CONTAINER WHEN THE PLUNGER RECEIVES IMPACT, BUT TO RESIST WITHDRAWAL THEREFROM.
Claim 2
Dependent Claim
138 words
A FIRE EXTINGUISHER ATTACHMENT FOR A CYLINDRICAL PRESSURIZED FLUID METAL CONTAINER LIPPED AT ONE END, COMPRISING: A HOLLOW PLUNGER, SHARPENED AT ONE END AND RESTRICTIVELY APERTURED AND ADAPTED AT ITS OTHER END TO RECEIVE IMPACT FOR URGING THE SHARPENED END THROUGH THE END WALL OF SAID CONTAINER, SAID PLUNGER FURTHER HAVING A SHOULDER NEAR ITS OTHER END AND AN ANNULAR FLANGE NEAR ITS SHARPENED END; AND A RESILIENT CAP ADAPTED TO FIT SNUGLY OVER THE LIPPED END OF SAID CONTAINER, RETAINING THE PLUNGER AT ITS SHOULDER BY MEANS OF AN APERTURE, SAID CAP INCLUDING A DIAMETRAL RIGID MEMBER RECEIVING THE PLUNGER NEAR ITS SHARPENED END THROUGH AN APERTURE LARGE ENOUGH TO CLEAR THE FLANGE, SAID FLANGE BEING ADAPTED TO PASS EASILY THROUGH THE END WALL OF THE CONTAINER WHEN THE PLUNGER RECEIVES IMPACT, BUT TO RESIST WITHDRAWAL THEREFROM.
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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |