Patent ID: 8241033

Claim:
A safety flint lighter having an ignition device including a flint and a sparking file wheel configured to prevent a child from igniting a flame, the lighter comprising: a fuel tank body with a middle case mounted on it, said middle case having two spaced-apart subframes with aligned axial holes, said aligned axial holes rotatably supporting a rotary shaft of the sparking file wheel so as to permit the rotary shaft, at an axis thereof, to move between a first position in which it is normally held at a distant from the tank body and generally aligned on an axis of the flint, a second position closer to the tank body than the first position and on an axis of the flint and a third position offset with respect to a straight line between the first position and the second position and at a distance from the tank body greater than that of the second position, wherein the axial hole is configured so that the rotary shaft is movable from one of the first, second, and third positions directly to any of the first, second, and third positions without moving through any of the other positions, and wherein the rotary shaft has a circular cross-section and wherein the axial hole, rotatably supporting the sparking file wheel, has on an axially vertical sectional plane a contour of a closed curve (ABCDEFGHIA) including a curve portion (ABC) for holding the rotary shaft of the sparking file wheel in the first position, a curve portion (GHI) for holding the same in the second position and a curve portion (CDEFG) smoothly connected with the two curve portions (ABC and GHI) and extending oppositely to a side the nozzle exists.