Abstract: A pressure regulator for a gas lighter which comprises, in a well of the lighter body, a porous membrane of constant natural porosity separating two chambers from one another to set the maximum flame height. A downstream chamber is connected to the burner outlet and serves for evaporation while upstream of the filter the wetting chamber communicates with the reservoir containing the fuel.

Abstract: A valve for a gas lighter wherein an elongated support body of low thermal conductivity is clamped in a tubular member forming a valve seat at its upper end to lock a flame-height-controlling filter in place below this valve seat. The improvement resides in the formation of the thermally conductive burner-carrying member with a tubular apron, skirt or sleeve which is fitted over the thermally conductive valve member and slidingly guided therein to press a valve body (rubber gasket or flap valve) against the valve seat. The gas passage in the burner member is formed only in the upper end thereof, while the apron extends into the well beyond the filter.

Abstract: A cigarette lighter has a cylindrical fuel-containing housing provided at its head with a burner, a valve having a lever operable to feed fuel from the housing interior to the burner, and a striker wheel for sparking across the burner and igniting fuel issuing therefrom. A shield surrounds the projecting end of the valve lever and prevents its actuation. This shield is releasably connected to the housing by a plurality of frangible webs to allow its removal after purchase of the lighter. These webs are integrally formed with the shield and with the synthetic-resin reservoir body of the housing or with the metallic head cap thereof.

Abstract: A valve system particularly for cigarette lighters comprises a pressure control, escape or relief valve in association with a closure or blocking valve with a common fluid-flow obstructing means for the two valves.

Abstract: A lever formed at least partially as a bimetallic strip engages between the cover and the burner-valve of a gas-type cigarette lighter. When the cover is lifted this lever automatically opens the valve and forms a gas jet that may be ignited with the striker. A cup-shaped extension on the lever at the jet is heated by the flame on the lighter and conducts this heat to a thermodeformable tab on the lever so that after a predetermined amount of heating the tab deforms and disconnects the lever from the burner-valve, allowing this valve to close and shut off the gas flow.