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Publication numberUS20020139056 A1
Publication typeApplication
Application numberUS 09/798,385
Publication dateOct 3, 2002
Filing dateMar 5, 2001
Priority dateMar 5, 2001
Publication number09798385, 798385, US 2002/0139056 A1, US 2002/139056 A1, US 20020139056 A1, US 20020139056A1, US 2002139056 A1, US 2002139056A1, US-A1-20020139056, US-A1-2002139056, US2002/0139056A1, US2002/139056A1, US20020139056 A1, US20020139056A1, US2002139056 A1, US2002139056A1
InventorsLee Finnell
Original AssigneeFinnell Lee M.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fire protection system
US 20020139056 A1
Abstract
A fire protection system employs a plurality of radio frequency transmitter temperature sensors remotely located around a building to be protected, one or more sprinkler heads coupled to a water supply line and mounted on the roof of the building to provide sprinkler coverage of the building and a perimeter area surrounding the building, and control circuitry responsive to a radio frequency signal transmited by one or more of the remotely located temperature sensors when a temperature exceeding a threshold temperature of the sensors is sensed thereby to initiate the flow of water to the one or more sprinkler heads for a predetermined period of time.
Therefore, the foregoing is considered as illustrative only of the principles of the fire protection system. Further, since many modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to falling within the scope of the invention.
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Claims(8)
1. A fire protection system for preenting a building to be protected and a desired perimeter area surrounding the building in advance of an approaching fire, the system comprising.
a plurality of radio frequency transmitter temperature sensors positioned at selected locations surrounding the building, each of the temperature sensors having an associated threshold temperature and being operative for transmitting a radio frequency signal whenever an ambient temperature exceeding the threshold temperature is sensed thereby;
one or more sprinkler heads coupled to a water supply line and mounted on the roof of the building to provide sprinkler coverage of the building and a perimeter area surrounding the building;
an electric water alve coupled in the water supply line; and control circuitry coupled to the electric water valve, said control circuitry including radio frequency receiver means for receiving said radio frequency signal, said control circuitry being responsive to said radio frequency signal transmitted by one ore more of the plurality of temperature sensors for actuating the electric water valve to thereby permit the flow of water to the one or more sprinkler heads for a predetermined period of time.
2. A fire protecteion system as in claim 1 wherein the threshold temperature associated with each of the temperature sensors is 135 degrees F.
3. A fires protection system as in claim 1 wherein said control circuitry includes adjustable timing relay means for setting said predetermined period of time.
4. A fire protection system as in claim 1, further comprising a manually actuated system shutoff valve coupled in series with said electric water valve for enabling the user to manually shut off the fire protection system.
5. A fire protection system as in claim 4, further comprising a manually actuated drain valve coupled in series with said system shutoff valve for enabling the user to drain water from the fire protection system.
6. A fire protection system as in claim 1 further comprising a manual bypass valve coupled around said electric water valve for permitting the user to manually operate the fire protection system.
7. A fire protection system as in claim 1 wherein each of said one or more sprinklers is operative for wetting a circular area of predetermined diameter.
8. A method for prewetting a building to be protected and a desired perimeter area surrounding the building in advance of an approaching fire, the method comprising:
providing a plurality of ratio frequency transmitter temperature sensors positioned at selected locations surrounding the building, each of the temperature sensors having an associated threshold temperature and being operative for transmitting a radio frequency signal whenever an ambient temperature exceeding the threshold temperature is sensed thereby;
providing one or more sprinkler heads couple to a water supply line and mounted on the roof of the building to provide sprinkler coverage of the bulding and a perimeter area surrounding the building;
providing an electric water supply valve coupled in the water supply line;
providing control circuitry coupled to the electric water valve, said control circuitry including radio frequency reciever means for recieving said radio frequency siganl, said control circuitry being responsive to said radio frequency signal transmitted by one or more of the plurality of temperature sensors for actuating the electric water valve to thereby permit the flow of water to the one or more sprinkler heads for a predetermined period of time.
Description
  • [0001]
    This invention relates generally to fire protection systems and, more particularly, to such a system for use in protecting rural residential building located in high fire risk areas.
  • [0002]
    in the western third of the United States, arid conditions create extreme fire danger during certain periods every year. Residential building have become more vulnerable in recent years due to the fact that many homes are left unattended for long periods of time because they are occupied as vacation homes or by families in which both parents work. Compounding this problem is the proliferication of homes in scenic forested or mountainous areas where the quality of life is superb, but the fire danger is high.
  • [0003]
    While some of these areas are served by rural fire protection districts, the response times of these entities are generally very long. Moreover, many mountain homes are simply without public fire protection of any kind. Home owners in these high risks areas face significantly higher insurance premiums than city homeowners, and some are not able to obtain fire coverage at any cost.
  • [0004]
    Several systems are known for protecting buildings from the risk of fire. Such systems are described in U.S. Pat. No. 4428434 to GELAUDE, U.S. Pat. No. 5165482 to SMAGAC et. al, U.S. Pat. No. 5263543 to NIGRO, U.S. Pat. No. 5692571 to JACKSON and U.S. Pat. No. 5732511 to SCOTT.
  • [0005]
    While these devices fulfill their objectives, they do not describe a fire protection system with a single large gun nozzle that is comparatively inexpensive to install and maintain and that is effective in protecting single rural properties and multiple homes on smaller city lots.
  • [0006]
    The present invention is therefore directed to a fire protection system that is inexpensive to install and maintain and that is simple yet effective in protecting a building from approaching fire.
  • [0007]
    The present invention employs, in accordance with the illustrated preferred embodiment, a plurality of radio frequency temperature sensors remotely located around a building to be protected, one or more sprinkler heads coupled to a water supply line and mounted on the roof of the building to provide sprinkler coverage of the building and/or a perimeter area surrounding the building, and control circuitry responsive to a radio frequency signal transmitted by one or more of the remotely located temperature sensors when a temperature exceeding a threshold temperature of the sensors is sensed thereby to initiate the flow of water to the one or more sprinkler heads for a predetermined period.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0008]
    [0008]FIG. 1 is a front elevation pictorial diagram of an exterior of the fire protection system of the present invention, illustrating the spiral relationship between a building to be protected by an approaching fire, heat sensors positioned to detect the approaching fire at a distance from the building, and the sprinkler pattern required to adequetely protect the building.
  • [0009]
    [0009]FIG. 2 is atop plan pictorial diagram of the exterior portion of the fire protection system of FIG. 1 illustrating the areas of water coverage provided by a combination of a gun sprinkler and/or two, supplemental smaller sprinklers.
  • [0010]
    [0010]FIG. 3 is a top plan pictorial diagram illustrating the areas of water coverage for for multiple houses on smaller city lots.
  • [0011]
    [0011]FIG. 4 is a block diagram of the interior control portion of the fire protection system of the fire protection system of the present invention.
  • DETAILED DESCRIPTION OF THE INVENTION
  • [0012]
    Referring now to FIGS. 1,2 and 3 there shown pictorial diagrams of the exterior Portion of the fire protection system of the present invention that is designed to protect a building 100 from an approaching fire. A plurality of heat sensors 10 is typically placed 300-500 feet from building 100, depending on topography and foliage. Up tp 16 heat sensors 10 may be employed in the system described herein. Heat sensors 10 preferable comprise commercially available radio frequency transmitter temperature sensors of the type having a treshold temperature of 135 degrees F. and that transmit a 900 MHz radio signal when the sensed temperature exceeds the threshold temperature. One or more water sprinklers are preferably positioned at the highest point on the roof of building 100 to provide a water spray pattern that extends approximately 112 feet around the building 100. The sprinklers may comprise a single gun sprinkler 20 that is centrally mounted on the roof, such as the Rainbird SR103 EM sprinkler that sprinkler that dispenses 57 gallons/minute over a full circle 222 feet in diameter. This type of sprinkler facilities the wetting of foliage at the highest point possible. A pair of supplimental sprinklers 22 may be positioned at each end of the roos, if desired. Sprinklers may comprise, for example a pair of Rainbird 35A-TNT sprinklers, which operate with 30-60PSI water pressure and provide circular coverage extending approximately 42 feet. The water lines which feed sprinklers 20, 22 may be conventionally fabricated using copper or PVC materials. All water lines are slpoped to provide drainage after the fire protection systems is used or tested. Damage to the water lines caused by freezing in cold climates is thereby prevented.
  • [0013]
    Referring now to FIG. 4, there is shown a water line 40 that conveys water from the existing main water line in the building to the roof-mounted sprinklers 20, 22 of FIGS. 1 and 2. IN situations in which storage tank is needed to increase the volume of water available to the fire protection system, the existing building water line is divided, with one branch supplying the storage tank as a fill line. It is controlled by a float in the tank which maintains a desired water level in the tank at all times. A conventinal amnual valve 42 serves as a system shut off valve when it is desired to repair of drain the fire prtection system. A conventional drain valve 44 is similarily conventionally employed to drain water from the fire protection system. A manual bypass valve 46 is provided in a bypass water line section 48 around an electric water valve 50 to permit manual operation of the fire protection system. Electric water valve may comprise a commercially available RainBird 075—DV valve, whose operation is controled by controll circuitry 52 that is mounted inside the building, preferably adjacent water line 40. Control circuitry 52 comprises a power switch 54, a conventional 24-volt transformer 56, a timing relay 58, a pair of general purpose relays 60 and 62 a 12-volt AC adapter and a reciever 66. Timing relay 58 , may comprise, for example, a commercially available solid relay having and adjustable time delay of 1.2 to 120 minutes.
  • [0014]
    Relay 60 may comprise a KP12V14 general purpose relay, and relay 62 may comprise a Zetler individual relay. Reciever 66 may comprise a commercially available Inevonics FA416R reciever.
  • [0015]
    In operation, one ore more of the remotely located heat sensors 10 transmits a radio frequency signal whenever a temperature exceding the threshold temperature of the sensor is sensed. The transmitted signal is recieved by reciever 66, which in turn supplies a control signal that is applied, through relay 62, to timing relay 58. Timing relay 58 then signals relay 60 to actuate electric water valve 50 for a predetermined period of time to which timing relay 58 is set. The result is that water is permitted to flow from the building water supply line through water line 40 to the roof sprinklers 20, 22 thereby wet the building and a perimeter area defined by the coverage of sprinklers 20, 22.
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US7690157 *Apr 30, 2008Apr 6, 2010Blumberg Marvin RSecure data center having redundant cooling and blast protection for protecting computer servers by the positioning of air handling units, fiber optic cable and a fire suppression system
US7845425Jan 26, 2009Dec 7, 2010Matt FlynnFire sprinkler with cutoff valve, tamper-resistant features and status indicator
US8109043 *Feb 25, 2010Feb 7, 2012Blumberg Marvin RSecure data center having redundant cooling and blast protection for protecting computer servers by the positioning of air handling units, fiber optic cable and a fire suppressiion system
US8387712Dec 7, 2010Mar 5, 2013Matt FlynnFire sprinkler with ball-type cutoff valve and tamper-resistant features
US9078749Aug 21, 2014Jul 14, 2015Georg LutterTruncated cone heart valve stent
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US9480559Aug 13, 2012Nov 1, 2016Tendyne Holdings, Inc.Prosthetic valves and related inventions
US9486306Jan 14, 2014Nov 8, 2016Tendyne Holdings, Inc.Inflatable annular sealing device for prosthetic mitral valve
US9526611Oct 29, 2014Dec 27, 2016Tendyne Holdings, Inc.Apparatus and methods for delivery of transcatheter prosthetic valves
US9597181Dec 21, 2015Mar 21, 2017Tendyne Holdings, Inc.Thrombus management and structural compliance features for prosthetic heart valves
US9610159Nov 24, 2015Apr 4, 2017Tendyne Holdings, Inc.Structural members for prosthetic mitral valves
US9675454Aug 14, 2012Jun 13, 2017Tendyne Holdings, Inc.Delivery systems and methods for transcatheter prosthetic valves
US9730792Feb 8, 2016Aug 15, 2017Georg LutterTruncated cone heart valve stent
US20040244310 *Mar 29, 2004Dec 9, 2004Blumberg Marvin R.Data center
US20090000243 *Apr 30, 2008Jan 1, 2009Blumberg Marvin RData center
US20100154687 *Feb 25, 2010Jun 24, 2010Blumberg Marvin RData center
US20110120737 *Dec 7, 2010May 26, 2011Matt FlynnFire Sprinkler with Ball-Type Cutoff Valve and Tamper-Resistant Features
US20110192616 *Feb 10, 2010Aug 11, 2011Gonzalez Benigno MSprinkler Apparatus and Method of Placement
US20150178850 *Dec 24, 2013Jun 25, 2015The Travelers Indemnity CompanyInsurance applications utilizing virtual engineering data
CN104141401A *Jul 2, 2014Nov 12, 2014哈尔滨工业大学Emergency shelter method suitable for winter cities
Classifications
U.S. Classification52/1, 169/13, 239/207, 52/168
International ClassificationA62C37/40, A62C3/02
Cooperative ClassificationA62C37/40, A62C3/0292, A62C3/0214
European ClassificationA62C3/02R, A62C3/02D, A62C37/40