US4836290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire suppression system
Assignee: LE LANDE BARBARA J TRUSTEE LE LANDE FAMILY TRUST DTD 6/30/1997
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Filing: 1986-09-17
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Granted: 1989-06-06
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Expires: 2006-09-17
Abstract
Abstract A fire extinguishing system for roof fires or the like includes a fire sensor for monitoring a condition indicative of a fire and for signaling the sensing of the condition. A first fire extinguishing member is provided for spraying a fire retardant fluid onto an exterior surface of an associated roof. A logic circuit is connected to the fire sensor and the first fire extinguishing member for actuating the first fire extinguishing member as driven by the fire sensor.
Inventors
- 👤 Walter C. Le Lande, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:40
CPC Classifications
A; A62; A62C; A62C35/00; A62C35/58; A62C35/62; A62C37/00; A62C37/36; A62C37/38; A62C37/40
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
165 words
A fire extinguishing system for roof fires or the like, comprising: a fire sensor means for monitoring a condition indicative of a fire and for signaling the sensing of the condition; a first fire extinguishing means for spraying a fire retardant fluid onto an exterior surface of an associated roof, said first fire extinguishing means comprising: a fluid circuit, a spray nozzle in communication with said fluid circuit, a source of water, a water conduit connecting said source of water to said fluid circuit, a fire retardant fluid holding tank in communication with said fluid circuit, said tank holding a fluid other than water and a venturi eductor located in said fluid ciruit for mixing water from said water conduit with said fire retardant fluid before said mixture exits through said spray nozzle; and, a logic circuit control means connected to said fire sensor means and said first fire extinguishing means for actuating said first fire extinguishing means as driven by said fire sensor means.
Claim 2
Dependent Claim
165 words
A fire extinguishing system for roof fires or the like, comprising: a fire sensor means for monitoring a condition indicative of a fire and for signaling the sensing of the condition; a first fire extinguishing means for spraying a fire retardant fluid onto an exterior surface of an associated roof, said first fire extinguishing means comprising: a fluid circuit, a spray nozzle in communication with said fluid circuit, a source of water, a water conduit connecting said source of water to said fluid circuit, a fire retardant fluid holding tank in communication with said fluid circuit, said tank holding a fluid other than water and a venturi eductor located in said fluid ciruit for mixing water from said water conduit with said fire retardant fluid before said mixture exits through said spray nozzle; and, a logic circuit control means connected to said fire sensor means and said first fire extinguishing means for actuating said first fire extinguishing means as driven by said fire sensor means.
Claim 3
Dependent Claim
24 words
The system of claim 1 further comprising a manually operable control means for overriding said logic circuit and activating said first fire extinguishing means.
Claim 4
Dependent Claim
56 words
The system of claim 1 further comprising a second fire extinguishing means comprising: a fire retardant gas storage container; a valve means for controlling the venting of fire retardant gas from said container into an associated attic located under said associated roof; and, a control wire connecting said valve means to said logic circuit control means.
Claim 5
Dependent Claim
38 words
The system of claim 1 further comprising at least one ventillation fan for selectively circulating air through an associated attic located under the associated roof when no fire condition is sensed in order to cool the associated attic.
Claim 6
Dependent Claim
28 words
The system of claim 4 further comprising a closure means for closing an air intake of said at least one ventillation fan, when a fire condition is sensed.
Claim 7
Dependent Claim
22 words
The system of claim 4 wherein two spaced ventillation fans are provided to allow better circulation of air through the associated attic.
Claim 8
Dependent Claim
29 words
The system of claim 1 wherein said first fire extinguishing means further comprises the fire retardant fluid from said holding tank through said fluid circuit to said spray nozzle.
Claim 9
Dependent Claim
15 words
The system of claim 1 wherein said source of water is an emergency water supply.
Claim 10
Dependent Claim
22 words
The system of claim 1 further comprising an emergency power supply for powering said logic circuit control means even during power outages.
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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) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |