A gas combustor includes: a housing, a storage cylinder, a fuel gas controlling device, an igniting device, a safety switch, and a combusting device. The safety switch has a fastening unit and a locking unit abutted against a locking bolt formed on a bottom surface of a press button; the fastening unit has an accommodation chamber allowing the locking unit to be accommodated, and a swing arm having a latching hook and longitudinally disposed at a front end of the accommodation chamber; the locking unit has a main body accommodated in the accommodation chamber, a longitudinal spring is disposed between the main body and the accommodation chamber, and the main body has a push button protruded from a penetrated slot longitudinally formed on a rear wall of the accommodation chamber, and a locking hook protruded towards the latching hook.

A method and apparatus are described for the control of vegetation by means of a heated gas that is generated in a burner and which via an outflow opening of an outlet channel is passed to the vegetation to be controlled. A fan is arranged between the burner and the outlet channel in order for the fan, while in operation, to suck in the heated gas from the burner and discharge it to the outlet channel and thereby exhibiting a flame-retarding action.

The invention relates to a burner assembly (100) comprising at least two gas supply lines (1, 2) for supplying at least two different gases, a gas mixture supply line assembly (11), in which the mixture of the at least two different gases is passed on and fed to at least one burner head (20) in which the mixture is combusted, wherein the gas mixture supply line assembly (11) and/or at least one of the gas supply lines has at least one flexible metal tube (1, 2, 13, 16, 19, 21).

A torch includes a main burner that produces a flame; a flame holding body configured to maintain the combustion state of the main burner if the flame produced by the main burner is about to be extinguished; and a gas supply pipe configured to feed combustion gas from a gas container filled with the combustion gas to the main burner and the flame holding body.

A blow torch includes a casing, an igniter received within the interior, and a safety control device for preventing the actuator being operated from an unactuated position to an actuated position movably coupled to the casing and connected to the igniter. The safety control device includes an actuator movably coupled to the casing, a release movably coupled to the actuator, a first biasing member positioned between the actuator and the release, a retainer movably coupled to the actuator, and a second biasing member positioned between the actuator and the retainer.

A blow torch includes a casing, an igniter received within the interior, and a safety control device for preventing the actuator being operated from an unactuated position to an actuated position movably coupled to the casing and connected to the igniter. The safety control device includes an actuator movably coupled to the casing, a release movably coupled to the actuator, a first biasing member positioned between the actuator and the release, a retainer movably coupled to the actuator, and a second biasing member positioned between the actuator and the retainer.

A gas combustor having function of adjusting combusting angle includes: a fixed housing having a top end thereof transversally formed with a rod hole; and a rotary housing pivoted with the fixed housing, where one side of the rotary housing is formed with a shaft hole having a plurality of annularly-arranged teeth slots for receiving a locking mechanism having an unlocking press button, a connection rod extrudes from an inner surface of the unlocking press button to pass the shaft hole, be sleeved with a stretch spring and enter the rod hole, the connection rod is connected to a passive member in the fixed housing, the passive member has at least one convex tooth protruding toward the plurality of teeth slots, and each of the at least one convex tooth is to be inserted and positioned in one of the teeth slots to form a locked status.

A roller system is provided comprising a compressed gas source including a compressed flammable gas, and a roller attachment attached to at least one of the compressed gas source and nozzle.

A burning device includes a body and an air amplifier mounted in the body. The air amplifier includes a fuel channel between an inlet and an outlet of the air amplifier. The fuel channel includes an intermediate section between an inlet section and an outlet section. A width of the inlet section gradually decreases from the inlet towards the intermediate section. A width of the outlet section gradually increases from the intermediate section towards the outlet. A width of the intermediate section is smaller than the width of the inlet section and the width of the outlet section. The air amplifier includes a plurality of side channels. Each side channel extends along an extending axis not intersecting with a longitudinal axis of the fuel gas channel and includes an inner end intercommunicating with the fuel channel and an outer end intercommunicating with an outer periphery of the air amplifier.

A burning device includes a body and an air amplifier mounted in the body. The air amplifier includes a fuel channel between an inlet and an outlet of the air amplifier. The fuel channel includes an intermediate section between an inlet section and an outlet section. A width of the inlet section gradually decreases from the inlet towards the intermediate section. A width of the outlet section gradually increases from the intermediate section towards the outlet. A width of the intermediate section is smaller than the width of the inlet section and the width of the outlet section. The air amplifier includes a plurality of side channels. Each side channel extends along an extending axis not intersecting with a longitudinal axis of the fuel gas channel and includes an inner end intercommunicating with the fuel channel and an outer end intercommunicating with an outer periphery of the air amplifier.