Abstract: A gas appliance has a housing, a reservoir of a gasifiable combustible in the housing, and a nozzle in the housing connected to the reservoir provided with a valve openable for emitting an ignitable stream of the combustible. An igniter in the housing has a relatively stationary first generator part forming a first terminal, a first electrode at the nozzle connected to the first terminal, and a relatively movable second generator part forming a second terminal and movable on the stationary part to generate a potential between the terminals. A depressible button or element displaceable on the housing between upper and lower end positions is connected to the movable generator part for opening the valve and generating the potential between the terminals when moving into the lower end position.

Abstract: A gas lighter has a rocking lever that is pushed down to open a gas-feed valve and/or fire a spark into a jet of gas emitted by the feed valve. A blocking slide on the housing is displaceable transversely between an outer neutralizing position preventing axial downward depression of the lever service end and an inner retracted freeing position permitting the lever service end to be downwardly depressed so that when the blocking slide is in the neutralizing position the lighter cannot be lit. The blocking slide has an outer service end exposed adjacent the lever service end, an inner end engageable axially between the rocking lever and the housing, and a bendable stem extending between the blocking-slide ends. Biasing structure on the housing continuously urges the blocking slide into the blocking position so that the blocking slide must be retained in the freeing position for actuation of the one control means and lighting of the lighter.

Abstract: A catalytic burner has a nozzle for forming a jet of combustible gas extending along a jet axis, a catalyst body supported offset from and immediately adjacent the axis heatable to an activation temperature at which it supports catalytic combustion, and a device like a piezoelectric crystal for igniting the jet and thereby forming at the axis a flame that heats the body. The flame is quenched after it has heated the body to its activation temperature.