A dry fire protection sprinkler has an inlet seal assembly to seal an inlet orifice. A spring seal compresses in response to a load. An inlet release unit releases the inlet seal assembly. A flexible tube has an inlet end connected to the inlet release unit. A flexible linkage extends through the flexible tube, and has an inlet end connected to the inlet release. An outlet biasing portion is connected to an outlet end of the tube and an outlet end of the linkage, which displaces upon activation of the sprinkler. A sprinkler body is connected to the outlet biasing portion, with an outlet seal assembly to seal its outlet orifice. When ambient reaches a predetermined temperature, the outlet seal assembly releases from the outlet orifice, and the outlet biasing portion displaces the linkage, causing the inlet of the linkage to operate the inlet release unit, releasing the inlet seal.

A dry fire protection sprinkler has an inlet seal assembly to seal an inlet orifice. A spring seal compresses in response to a load. An inlet release unit releases the inlet seal assembly. A flexible tube has an inlet end connected to the inlet release unit. A flexible linkage extends through the flexible tube, and has an inlet end connected to the inlet release. An outlet biasing portion is connected to an outlet end of the tube and an outlet end of the linkage, which displaces upon activation of the sprinkler. A sprinkler body is connected to the outlet biasing portion, with an outlet seal assembly to seal its outlet orifice. When ambient reaches a predetermined temperature, the outlet seal assembly releases from the outlet orifice, and the outlet biasing portion displaces the linkage, causing the inlet of the linkage to operate the inlet release unit, releasing the inlet seal.

A fire detection and suppression system operates in independent autonomous modes or under human command. Optical, thermal and laser based sensors detect fire conditions. Anemometers and thermometers detect environmental conditions, allowing the system to adjust the flow of fluid from the system to the targeted flame or condition. Algorithmic analysis of the input data in connection with such preselected thresholds permits rapid detection of fire conditions and in automatic modes triggers a suppression response. A feedback loop enhances adjusts for dynamic flame and environmental conditions.

An automated telescopic water cannon and nozzle gun apparatuses that function by variable water pressure controlled by actuator and gear motor. Water pressure extends the water cannon nesting tubes and distance is restrained by center tube retainer cap connected to a winch cable. The water cannon handle bars are positioned for balancing allowing the firefighter to control the apparatus when tubes are extended and the winch reversed pulls the tubes back to the home position.. The bipod elevates, lowers, extends and retracts with actuators for positioning of the apparatus. The external tube has a an attachable polycarbonate heat and blast resistant shied connect at the end. The apparatus connected to the water tank may be transported by a helicopter to fight all types of fires, for an aerial attack. The water nozzle gun has an extended tube stock connection for control assistants and nozzle extension for direct and angle application.

A sprinkler reducer fixing bracket that is capable of allowing a reducer to be adjusted in height, especially in a state where the reducer is coupled thereto. The sprinkler reducer fixing bracket includes a body fitted to a horizontal bar, a hook member whose one side is rotatably coupled to the body by means of a shaft member, a locking shaft disposed on the hook member and having a cam portion adapted to push the body to allow the hook member to move to a position for fixing the reducer up and down, and U-shaped first and second locking pins adapted to allow the hook member to maintain the fixed position of the reducer in the up and down directions.

A sprinkler reducer fixing bracket that is capable of allowing a reducer to be adjusted in height, especially in a state where the reducer is coupled thereto. The sprinkler reducer fixing bracket includes a body fitted to a horizontal bar, a hook member whose one side is rotatably coupled to the body by means of a shaft member, a locking shaft disposed on the hook member and having a cam portion adapted to push the body to allow the hook member to move to a position for fixing the reducer up and down, and U-shaped first and second locking pins adapted to allow the hook member to maintain the fixed position of the reducer in the up and down directions.

Device and methods of protecting a branch connector of a fluid supply pipe header for a fire protection system. A protected branch connector assembly includes a protective device that protects the branch connector fitting from dirt and debris and indicates that an internal seal member is in a desired seated orientation. The protective device includes a plug body inserted within the outlet opening of the branch connector fitting and an indicator in an indicative relationship with the branch connector to indicate that the internal seal member is in the desired seated orientation.

Device and methods of protecting a branch connector of a fluid supply pipe header for a fire protection system. A protected branch connector assembly includes a protective device that protects the branch connector fitting from dirt and debris and indicates that an internal seal member is in a desired seated orientation. The protective device includes a plug body inserted within the outlet opening of the branch connector fitting and an indicator in an indicative relationship with the branch connector to indicate that the internal seal member is in the desired seated orientation.

Disclosed is a rescue robot for searching trapped persons for firefighting, including a mobile base. Mobile rollers with self-locking mechanisms are mounted at a bottom of the mobile base, a machine mounting seat is fixed to the mobile base, a rotating column is arranged at the top of the machine mounting seat, a driving motor is mounted at a bottom of an inner cavity of the machine mounting seat, a right output end of the driving motor is sleeved with a driving bevel gear, a bottom of the rotating column penetrates through a top of the machine mounting seat and is sleeved with a driven bevel gear, the driving bevel gear and the driven bevel gear are mutually meshed, a portion of an outer wall of the rotating column is fixedly sleeved with a fixed seat, left and right sides of the fixed seat are symmetrical bridge cranes.

Disclosed is a rescue robot for searching trapped persons for firefighting, including a mobile base. Mobile rollers with self-locking mechanisms are mounted at a bottom of the mobile base, a machine mounting seat is fixed to the mobile base, a rotating column is arranged at the top of the machine mounting seat, a driving motor is mounted at a bottom of an inner cavity of the machine mounting seat, a right output end of the driving motor is sleeved with a driving bevel gear, a bottom of the rotating column penetrates through a top of the machine mounting seat and is sleeved with a driven bevel gear, the driving bevel gear and the driven bevel gear are mutually meshed, a portion of an outer wall of the rotating column is fixedly sleeved with a fixed seat, left and right sides of the fixed seat are symmetrical bridge cranes.