US3172477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam producing apparatus for mine fire fighting
Assignee: ALERS HANKEY Ltd H
•
Filing: 1961-08-07
•
Granted: 1965-03-09
•
Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 Grisdale Harry
- 👤 Percy A Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:36
CPC Classifications
A; A62; A62C; A62C5/00; A62C5/02; A62C5/002; Y; Y10; Y10S; Y10S261/00; Y10S261/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A VESSEL ADAPTED TO PRODUCE FIRE EXTINGUISHING FOAM COMPRISING A CASING; AN INLET TO THE CASING FOR FOAM PRODUCING LIQUID; A PLURALITY OF NOZZLES ADAPTED FOR CONNECTION TO A COMPRESSED GAS FEED, THE NOZZLES BEING ARRANGED SO THAT AT LEAST TWO GAS JETS EMANATING THEREFROM CONVERGE UPON ONE ANOTHER WITHIN THE CASING; AND AN OUTLET IN THE CASING FOR FOAM, THE CASING BEING ELONGATED AND OF RECTANGULAR CROSS-SECTION, THE CASING INCLUDING A TOP COVER PLATE AND SIDE WALLS AND HAVING THE UPPER PORTION OF ONE OF ITS SIDE WALLS CUT AWAY TO PROVIDE SAID OUTLET FOR FOAM.
Claim 2
Dependent Claim
97 words
A VESSEL ADAPTED TO PRODUCE FIRE EXTINGUISHING FOAM COMPRISING A CASING; AN INLET TO THE CASING FOR FOAM PRODUCING LIQUID; A PLURALITY OF NOZZLES ADAPTED FOR CONNECTION TO A COMPRESSED GAS FEED, THE NOZZLES BEING ARRANGED SO THAT AT LEAST TWO GAS JETS EMANATING THEREFROM CONVERGE UPON ONE ANOTHER WITHIN THE CASING; AND AN OUTLET IN THE CASING FOR FOAM, THE CASING BEING ELONGATED AND OF RECTANGULAR CROSS-SECTION, THE CASING INCLUDING A TOP COVER PLATE AND SIDE WALLS AND HAVING THE UPPER PORTION OF ONE OF ITS SIDE WALLS CUT AWAY TO PROVIDE SAID OUTLET FOR FOAM.
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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) | 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 |