Patent ID: 8262241

Claim:
A lamp pen comprising: a lower body; an upper body attached to the lower body; a refill disposed in at least the lower body; a rotating body assembly that includes a housing having one or more slots defined therein, a conductive plate having one or more terminals that slidably engage the one or more slots, and a wheel having a plurality of chutes and longitudinal guiding slots defined between the chutes; a guiding sleeve having one or more contact pins and one or more longitudinal inner ribs sized and oriented to slidably engage either the chutes or the longitudinal guiding slots of the wheel depending on the rotational position of the rotating body assembly; and a lamp having a first lead and a second lead, wherein the first lead is electrically coupled to the one or more contact pins of the guiding sleeve and the second lead is electrically coupled to a power source that is electrically coupled to the conductive plate, wherein the rotating body assembly is configured such that repeated application of a force on the rotating body assembly causes the rotating body assembly to rotate through a loop of positions in which the rotating body assembly moves sequentially from: a first position in which the one or more longitudinal inner ribs of the guiding sleeve slidingly engage one or more of the longitudinal guiding slots of the wheel and the refill is retracted into the lower body; to a second position in which the one or more longitudinal inner ribs of the guiding sleeve engage one or more of the chutes of the wheel causing at least a portion of the refill to extend out of the lower body, and in which at least one of the one or more terminals of the conductive plate contacts at least one of the one or more contact pins of the guiding sleeve causing the lamp to illuminate; to a third position in which the one or more longitudinal inner ribs of the guiding sleeve slidingly engage one or more of the longitudinal guiding slots of the wheel and the refill is retracted into the lower body; and to a fourth position in which the one or more longitudinal inner ribs of the guiding sleeve engage one or more of the chutes of the wheel causing at least a portion of the refill to extend out of the lower body and the lamp is not illuminated.