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 cigarette lighter has a cylindrical fuel-containing reservoir provided on one end with a burner, a valve having a lever operable to feed fuel from the reservoir to the burner, and a striker wheel for sparking across the burner and igniting the fuel. A metal cap covers this end and has a cutout receiving the wheel and in the line with the burner. A metal tab blocks that portion of the cutout aligned with the burner and is connected to the rest of the cap by a plurality of destructible webs. This tab has a tongue extending up over the striker wheel and out above the lever so that the striker wheel cannot be actuated, nor can the lever, and the burner is covered. This protective arrangement is removable after sale to expose the lever, striker wheel, and burner and allow use of the lighter.

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.