Fire suppression system

Claim 3

The method of claim 1 further comprising the step of spraying a fire retardant liquid on an exterior surface of the roof.

Claim 4

The method of claim 2 further comprising the steps of: providing a supply of a fire retardant chemical; providing a supply of water; and, mixing said fire retardant chemical and said water prior to said step of spraying.

Claim 5

A fire extinguishing system for protecting a building attic and roof from fire, comprising: a fire sensor for monitoring a fire condition; a ventilation fan for the attic which fan is secured on the roof and communicates through an air intake with the attic and a means for closing the air intake of said ventilation fan upon the sensing of a fire condition by said fire sensor to prevent said fire from spreading; an automatic logic circuit which communicates with said fire sensor and said means for closing the air intake to regulate said means for closing the air intake; a supply of a fire retardant fluid; and, a nozzle located in the attic and connected to said supply of fluid and including a valve which regulates an injecting of the fire retardant fluid into the attic by said nozzle upon the sensing of a fire condition by said fire sensor, wherein said automatic logic circuit also communicates with said valve.

Claim 6

A fire extinguishing system for protecting a building attic and roof from fire, comprising: a fire sensor for monitoring a fire condition; a ventilation fan for the attic which fan is secured on the roof and communicates through an air intake with the attic and a means for closing the air intake of said ventilation fan upon the sensing of a fire condition by said fire sensor to prevent said fire from spreading; an automatic logic circuit which communicates with said fire sensor and said means for closing the air intake to regulate said means for closing the air intake; a supply of a fire retardant fluid; and, a nozzle located in the attic and connected to said supply of fluid and including a valve which regulates an injecting of the fire retardant fluid into the attic by said nozzle upon the sensing of a fire condition by said fire sensor, wherein said automatic logic circuit also communicates with said valve.

Claim 7

The system of claim 4 wherein said means for closing the air intake comprises: a plurality of shutter members each of which is rotatably secured in a side by side manner adjacent each other and adjacent the air intake; a connecting rod which connects said plurality of shutter members together so that they can be operated in unison; and, a means for actuating said connecting rod.

Claim 8

The system of claim 5 wherein said means for actuating comprises a solenoid.

Claim 9

The system of claim 4 further comprising a means for deenergizing said ventilation fan upon the sensing of a fire condition.

Claim 10

A fire extinguishing system for enclosed areas, such as an attic beneath a roof, comprising: a ventilation fan extending through a wall of an enclosed area and defining an air path into and out of the enclosed area, said fan including a frame and a selectively operable means secured to the frame for moving air through the air path; a temperature sensor associated with said fan for monitoring a fire condition; and, a means for selectively closing the air path of said ventilation fan as directed by said temperature sensor wherein said means for closing comprises: a solenoid secured to said fan housing; and, at least one movable shutter member operatively connected to said solenoid.

Claim 11

A fire extinguishing system for enclosed areas, such as an attic beneath a roof, comprising: a ventilation fan extending through a wall of an enclosed area and defining an air path into and out of the enclosed area, said fan including a frame and a selectively operable means secured to the frame for moving air through the air path; a temperature sensor associated with said fan for monitoring a fire condition; and, a means for selectively closing the air path of said ventilation fan as directed by said temperature sensor wherein said means for closing comprises: a solenoid secured to said fan housing; and, at least one movable shutter member operatively connected to said solenoid.

Claim 12

The system of claim 8 further comprising: an actuator rod; and, a connecting means for connecting said actuator rod to said at least one shutter member, wherein said solenoid is operatively connected to said actuator rod.

Claim 13

The system of claim 9 wherein a plurality of shutter members are provided in a side by side relationship.

Claim 14

The system of claim 8 wherein said means for moving air comprises a motor and at least one fan blade adapted to be rotated by said motor.

Claim 15

The system of claim 11 further comprising a means for selectively deenergizing said motor.

Claim 16

The system of claim 8 further comprising: a fire retardant gas storage container; a valve for regulating the venting of fire retardant gas from said container into the enclosed area; and, a means for controlling the operation of said valve.