Gas Flow Arrestor System Description

US Patent No. 6,199,573

A device and method for shutting off the flow of gas to a structure, such a residence, commercial building or industrial facility, when a fire is detected in a structure.

The device has a fire detector for providing a status signal to indicate the presence of fire in a structure, an actuator in communication with the fire detector, and a shut off valve located on a gas line and connected to the actuator.

When the status signal is received by the actuator, the actuator causes the valve to close, there by shutting off the flow of gas to the structure.

The device also includes one or more of the following:

A secondary electric power source, disturbance prevention circuitry, a shut off position indicator, a manually operated means of closing the gas valve, and an alarm indicating the presence of fire in a structure.

The method involves detecting a fire and providing a status signal to the open position to the closed position. The method also involves providing an indication of the shut off position.