Patent ID: 6948927
Filing Date: 2005-09-27
Classification: F23Q

Abstract:
1. A childproof safety disposable lighter, comprising: a casing having a liquefied gas cavity; a gas emitting valve having a nozzle upwardly extended above a ceiling of said casing and communicating with said liquefied gas cavity; an actuating lever pivotally mounted on said casing to actuate said gas emitting valve for releasing gas within said liquefied gas cavity; a supporting frame comprising a U-shaped frame body having two supporting walls parallely extended on top of said casing that said nozzle is upwardly extended between said two supporting walls, said supporting frame further having a flint chamber provided between said two supporting walls; an ignition unit, which is supported by said supporting frame, comprising: a flint having a bottom portion received in said flint chamber and being supported by a resilient element; a striker wheel, having a circumferential coarse striking surface in contact with said flint, being rotatably mounted between said two supporting walls; and two driving wheels, each having a diameter larger than that of said striker wheel, mounted at two outer sides of said striker wheel respectively in such a manner that when said two driving wheels rotate, said striker wheel is driven to rotate and strike against the flint to generate sparks directed toward said nozzle of the gas emitting valve; and a pair of safety shells, which are coaxially positioned with said striker wheel and facing two outer sides of the said driving wheels respectively, being integrally, upwardly, and rearwardly extended from said two supporting walls of said frame body respectively, wherein each of said safety shells is in circular shape having an outer smooth surface and a radius slightly larger than that of said driving wheels so that said two safety shells encircle said outer sides of said two driving wheels respectively to farm two physical barriers of said driving wheels; and means for detachably mounting said supporting frame on said ceiling of said casing, wherein said mounting means has a mounting socket downwardly extended from said ceiling of said casing and comprises an elongated mounting arm downwardly extended from said supporting frame to slidably insert into said mounting socket such that said ignition unit is detachably mounted on said ceiling of said casing and is adapted to be replaced when said flint is used up, wherein said mounting arm has a guiding portion having a non-circular cross section and an opening of said mounting socket has a corresponding cross section such that when said mounting arm is slidably inserted into said mounting socket, said guiding portion of said mounting arm is alignedly positioned at said opening of said mounting socket to retain said supporting frame on said casing in position.