the trigger and the fuel release lever closes the fuel release valve the cam mechanism is actuated by depressing the safety button as the safety button is depressed the lever spring is disengaged out of alignment with the stopper tab to permit depression of the trigger the hub rotates and the fuel release lever is actuated to open the fuel release valve as the safety button is released the lever spring urges the cam mechanism into the locked position application_number US 75162800 A description a general description of the piezoelectric utility lighter 1 will be provided before presenting a detailed description of the improvement in the safety feature that constitutes the invention generally the elements of the utility lighter 1 include a lighter housing 10 a lighting rod attached to the forward end of the lighter housing via engagement means not shown a support ring which slides over the overlapping portions of the lighter housing and lighting rod not shown a fuel tank 30 a piezoelectric unit 40 and a trigger 100 the lighter housing 10 is comprised of two shells cut along the longitudinal axis of the lighter 1 fig1 and 2 show one of these shells the lighter housing 10 has a back end 10 a and a forward end not shown where the forward end is equipped with engagement means not shown to engage the lighting rod not shown the lighting rod which typically has a cylindrical cross section has a free end which constitutes the tip of the lighter 1 and an engagement end which connects to the forward end of the lighter housing where the.