US3303886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination air conditioning and foam plug fire extinguishing system
Assignee: Specialties Development Corp
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Filing: 1965-03-24
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Granted: 1967-02-14
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Expires: 1985-03-24
Abstract
No abstract record available.
Inventors
- 👤 Tattersall John
- 👤 Ernest A Joerren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:59
CPC Classifications
A; A62; A62C; A62C5/00; A62C5/002; A62C2/00; A62C2/06; A62C3/00; A62C3/02; A62C3/0207; A62C5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN A FIRE EXTINGUISHING SYSTEM, THE COMBINATION OF A TRUNK-LINE DUCT SYSTEM HAVING AN UPSTREAM INLET AND A PLURALITY OF DOWNSTREAM BRANCH DUCT OUTLETS, AN AIR CONDITIONING SYSTEM HAVING AN OUTLET CONNECTED TO SAID DUCT SYSTEM INLET, A HIGH EXPANSION FOAM PLUG GENERATOR HAVING AN OUTLET CONNECTED BETWEEN SAID DUCT SYSTEM INLET AND UPSTREAM OF ALL OF SAID BRANCH DUCT OUTLETS, A FIRST CLOSURE IN SAID DUCT SYSTEM BETWEEN ITS INLET AND SAID FOAM PLUG GENERATOR OUTLET OPERABLE TO PREVENT THE FOAM PLUG FROM ENTERING SAID AIR CONDITIONING SYSTEM OUTLET,
Claim 2
Dependent Claim
90 words
IN A FIRE EXTINGUISHING SYSTEM, THE COMBINATION OF A TRUNK-LINE DUCT SYSTEM HAVING AN UPSTREAM INLET AND A PLURALITY OF DOWNSTREAM BRANCH DUCT OUTLETS, AN AIR CONDITIONING SYSTEM HAVING AN OUTLET CONNECTED TO SAID DUCT SYSTEM INLET, A HIGH EXPANSION FOAM PLUG GENERATOR HAVING AN OUTLET CONNECTED BETWEEN SAID DUCT SYSTEM INLET AND UPSTREAM OF ALL OF SAID BRANCH DUCT OUTLETS, A FIRST CLOSURE IN SAID DUCT SYSTEM BETWEEN ITS INLET AND SAID FOAM PLUG GENERATOR OUTLET OPERABLE TO PREVENT THE FOAM PLUG FROM ENTERING SAID AIR CONDITIONING SYSTEM OUTLET,
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |