Patent ID: 6234784
Filing Date: 2001-05-22
Classification: F23Q

Abstract:
A portable lighter having an igniter device equipped with a safety lock mechanism for igniting liquefied gas fuel by means of a discharge spark,said portable lighter comprising a lighter main body and an igniter device,said lighter main body being composed of a liquefied gas fuel tank, a combustion valve having a nozzle, electrodes of a tip of lead wire, and a switch member for the combustion valve, andsaid igniter device being composed of:a hollow casing integrally formed on the side of a ligher main body, an upper portion thereof being open, a ledge used for locking operation being formed on the inside of the casing at the front and rear opening in the upward direction,a high voltage electrical generator comprising a fixed member and a hollow movable member, the fixed member containing a piezo-electric element and an impact hammer positioned over that element thereinside, the movable member containing a coil spring used for hammer force, the movable member being inserted into the fixed member so as to be slidable, the fixed member being housed lengthwise in the casing with space provided on both sides at the front and the rear while the movable member being set upward away from the opening of the casing,an operating button mounted to the top of the movable member, said operating button comprising a top surface, side plates at the lower front and rear sides of the top surface and an end side plate,a lock bar formed of a pair of front and rear plate springs, the upper end of the lock bar being attached to the top portion of the movable member with the operating button, the lower end of the lock bar bending outward and being inserted inside the casing up to a position over the ledge, anda lock release member having an upper portion and a lower portion, the upper portion meshing with three outer surfaces of the operating button except for the surface facing the lighter body, the lower portion thereof meshing with the inner surface of the casing, the lock release member being formed with a U-shaped cross section, a second ledge for the operating button being formed at border of the upper portion and lower portion, the lower portion being mounted to the upper side of the ledge of the casing so as to be slidable while being separated by a desired stroke,wherein the lock release member and the operating button being formed of a resin, and engagement portions being removable by means of elastic deformation of the operating button are provided on the inner and outer side surfaces of the lock release member and the operating button, respectively, with both portions being mutually restrained.