An apparatus configured to perform a prescribed burn of vegetative ground fuel comprises a movable platform configured to traverse ground that contains the vegetative ground fuel, and a burn chamber disposed on the movable platform. An ignition source is disposed in the burn chamber and configured to ignite vegetative ground fuel within a prescribed burn region of the ground. A containment arrangement is situated relative to the burn chamber and configured to confine burning of the vegetative ground fuel to the prescribed burn region. A discharge apparatus is positioned relative to the burn chamber and configured to expel residual effluent from the burn chamber. An extinguisher system can be included to extinguish residual flames and embers. A smoke filtration system can be included to filter residual effluent expelled from the burn chamber.

A heat shrink gas gun has a handle which has a back side and a front side. The front side of the handle includes a cavity extending along an axis. An igniter is configured for ignition of the heat shrink gas gun and is actuated by a trigger. The igniter is insertably disposed in the cavity. The igniter is releasably received in the cavity. A trigger guard is positioned in front of the trigger and the front side in a spaced relationship. The trigger guard includes a through hole corresponding to the cavity so as to facilitate installation and replacement of the igniter.

A torch device for household and construction applications is disclosed. The torch device includes a body that is shaped like a firearm having an aft handgrip, a forward handgrip, a trigger guard, and an igniter guard. The body provides a more convenient carriage of the torch and integrates safety features for the torch device. A fuel delivery assembly is coupled with a fuel source. An igniter is carried within the body and operable via the igniter guard. A nozzle tip is coupled with the torch head to discharge the fuel source into a torch head. A fuel delivery conduit communicates the fuel source between the nozzle and a trigger control operable via access through the trigger guard. The torch device provides for easier carriage and safer operation while conducting repair and maintenance tasks.

The present invention concerns a joined connection and a joining method for welding torch components with a first metallic tubular segment and a second metallic tubular segment, which are joined to each other by plastic deformation via an interlocking connection. The problem which the invention proposes to solve is to indicate a joined connection as well as a joining method in which two metallic welding torch components can be joined without the use of thermal joining methods, yet with comparable quality. The problem is solved in that the interlocking is formed in at least two directions of the joining surface bordering one another.

A burner device includes a fuel tank and an ignition unit. The fuel tank includes a chamber, a first thread portion, and a check valve including a valve body. The ignition unit removably attached to the fuel tank. The ignition unit includes a second connecting portion engageable with the first thread portion, and a top pillar selectively to push against the valve body of the check valve to slide along a longitudinal axis. When the fuel in the fuel tank is depleted during the operation, a user can use a filling assembly to fill the supplemental fuel into the fuel tank or replace another fuel tank instantly to improve convenience.

A handheld welding torch apparatus for welding in confined areas includes a gas tank having a handle portion and an extension portion. Each of the handle portion and the extension portion is cylindrical. A valve assembly is coupled to the gas tank and comprises a tank receiver, a tube stem, a valve housing, and a control valve. The tube stem is coupled to the tank receiver. The tube stem is in fluid communication with the gas tank when the tank receiver is engaged with the extension portion. The valve housing is coupled to, and in fluid communication with, the tube stem. The control valve is coupled within, and in fluid communication with, the valve housing. A tube neck is coupled to, and in fluid communication with, the control valve. A welding tip is coupled to the tube neck.

A burner gun includes a case, an ignition device, a switch and a operational part. By the switch and an operation rail in the case, the ignition device can only be activated by correctly operating the switch and pulling the operational part. The ignition device cannot activated by pulling the operational part if the switch is not correctly operated, so that the ignition device is prevented from being activated unintentionally to reduce possibility of causing fire disasters.

A blowtorch includes a casing and a control unit. The control unit includes an activate button and a lock button. The lock button is switchable between a first lock position and an intermediate position, or between the intermediate position and a second lock position. The activate button is switchable between a standby position and an activation position when the lock button is in the intermediate position. The lock button contacts the activate button and restricts the activate button to hold in the activation position when the activate button is in the activation position and the lock button is in the first lock position or the second lock position.

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 burner gun includes a case, an ignition device, a switch and a operational part. By the switch and an operation rail in the case, the ignition device can only be activated by correctly operating the switch and pulling the operational part. The ignition device cannot activated by pulling the operational part if the switch is not correctly operated, so that the ignition device is prevented from being activated unintentionally to reduce possibility of causing fire disasters.