Abstract: A small flying vehicle flown by radio control or autonomously by an auto pilot is equipped with an airbag device. The small flying vehicle has a main body part including a controller and a battery, a frame, a propeller, a motor, and a transmitting and receiving antenna. The airbag device has a gas supplier, a sensor, a controller, and an airbag. The airbag device is attached to the main body part, and the gas supplier is provided with a gas cylinder that releases a compressed gas when a closure member sealing the gas cylinder is broken, a breaker, including an electric igniter, that breaks the closure member, and introduction device that introduces the gas discharged from the gas cylinder and providing the pressurized gas into the airbag to inflate the airbag.

Abstract: A small flying vehicle capable of mitigating the shock at the time of falling and colliding with the ground or the like is provided. A small flying vehicle equipped with an airbag device, capable of flying by radio control or autonomously flying by autopilot, and having a maximum length of 2 m or less, wherein the small flying vehicle has a main body part including a controller and a battery, a frame, a propeller, a motor, and a transmitting and receiving antenna; the airbag device has gas supply means, a sensor, a control device and an airbag, and is attached to the main body part; and the gas supply means is provided with a gas cylinder capable of releasing an internal gas when a closure member is broken and opened, breaking means including an electric igniter for opening the closure member of the gas cylinder, and introduction means for introducing the pressurized gas in the gas cylinder into the airbag to inflate the airbag.

Abstract: The present invention relates to a perforator for breaking a closing member at a gas outlet of a gas bottle to allow a gas to flow out. The perforator includes a cylindrical housing having three openings, namely, a first opening at a first end portion, a second opening at a second end portion which is opposite to the first end portion, and a third opening formed in a circumferential wall portion, an ignition device being fixed at the first opening, the second opening to be connected to the gas bottle and the third opening serving as a gas discharge portion, and when a pressure created by actuation of the ignition device is received, the first piston moving in an axial direction, and the second piston moving towards the second opening by receiving the movement of the first piston.

Abstract: The present invention provides a perforator for breaking a closing member at a gas outlet of a gas bottle to allow a gas to flow out, including the cylindrical housing having three openings, namely, a first opening at a first end portion, a second opening at a second end portion which is opposite to the first end portion, and a third opening formed in a circumferential wall portion, an ignition device being fixed at the first opening, the second opening to be connected to the gas bottle and the third opening serving as a gas discharge portion, an first piston and a second piston being disposed, in the order of the first piston and the second piston, from the side of the ignition device to the side of the second opening in the cylindrical housing, and when a pressure created by actuation of the ignition device is received, the first piston moving in an axial direction inside the cylindrical housing, and the second piston moving towards the second opening inside the cylindrical housing by receiving the movem

Abstract: In a method of and apparatus for controlling an atmosphere in a heat treatment furnace according to the present invention, a carburizing is carried out while supplying a hydrocarbon series gas and an oxidization gas into the furnace. The quantity of a residual CH.sub.4, a partial pressure of the oxidization gas and a partial pressure of CO are measured. The quantity of each gas to be supplied into the furnace is controlled according to either one of the values of the partial pressures.

Abstract: In a method of and apparatus for controlling an atmosphere in a heat treatment furnace according to the present invention, a carburizing is carried out while supplying a hydrocarbon series gas and an oxidization gas into the furnace, and the supply of the hydrocarbon series gas is stopped either when the quantity of a residual CH.sub.4 in the furnace is changed to increasing from decreasing, or when a partial pressure of oxygen in the furnace reaches a predetermined value.