US3055435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry chemical fire extinguishers
Assignee: Ansul Chemical Co
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Filing: 1959-02-06
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Granted: 1962-09-25
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Expires: 1979-02-06
Abstract
No abstract record available.
Inventors
- 👤 William R Warnock
- 👤 James A Lindlof
- 👤 Rodney L Hemminger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:39
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014; A62C; A62C13/00; A62C13/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A FIRE EXTINGUISHER, A SEALED CONTAINER HAVING THEREIN A CHANGE, SAID CHARGE CONSISTING ESSENTIALLY OF, BY WEIGHT, 10 TO 50 PERCENT OF A HIGH SURFACE AREA ADSORBENT SELECTED FROM THE GROUP CONSITING OF SILICA GEL, ACTIVATED CARBON, ATTAPULGUS CLAY, SYNTHETIC ZOELITE, ACTIVATED ALUMINA, SILICA-ALUMINA AND SILICA MAGNESIA 1.75 TO 10% OF NON-REACTIVE EXPELLANT GAS, SAID GAS BEING A MEMBER SELECTED FROM THE GROUP CONSISTING OF CARBON DIOXIDE NITROUS OXIDE, ETHANE, HALOGENATED HYDROCARBON, NITROGEN AIR, AND MIXTURES THEREOF, AND, THE REMAINDER, A FREEFLOWING COMMINUTED FIRE EXTINGUISHING AGENT, AT LEAST 10 PERCENT OF SAID EXPELLANT GAS BEING ADSORBED ON SAID ADSORBENT.
Claim 2
Dependent Claim
100 words
IN A FIRE EXTINGUISHER, A SEALED CONTAINER HAVING THEREIN A CHANGE, SAID CHARGE CONSISTING ESSENTIALLY OF, BY WEIGHT, 10 TO 50 PERCENT OF A HIGH SURFACE AREA ADSORBENT SELECTED FROM THE GROUP CONSITING OF SILICA GEL, ACTIVATED CARBON, ATTAPULGUS CLAY, SYNTHETIC ZOELITE, ACTIVATED ALUMINA, SILICA-ALUMINA AND SILICA MAGNESIA 1.75 TO 10% OF NON-REACTIVE EXPELLANT GAS, SAID GAS BEING A MEMBER SELECTED FROM THE GROUP CONSISTING OF CARBON DIOXIDE NITROUS OXIDE, ETHANE, HALOGENATED HYDROCARBON, NITROGEN AIR, AND MIXTURES THEREOF, AND, THE REMAINDER, A FREEFLOWING COMMINUTED FIRE EXTINGUISHING AGENT, AT LEAST 10 PERCENT OF SAID EXPELLANT GAS BEING ADSORBED ON SAID ADSORBENT.
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) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |