Patent ID: 6810532
Filing Date: 2004-11-02
Classification: A42B

Abstract:
A safety helmet comprising:a hat having an arcuate, elongated recessed area defined in an inner face of the hat and a through hole defined through a periphery of the hat, two positioning recesses defined in opposite sides of the recessed area and a securing recess sandwiched between the through hole and a peripheral edge of the hat; and a lining detachably connected to the inner face of the hat to define an air duct inside the safety helmet, wherein the lining has two positioning extensions oppositely formed to correspond to the positioning recesses and a protrusion formed on a distal end of the lining to correspond to the securing recess so that after inserting the positioning extensions into the positioning recesses and the protrusion into the securing recess, combination between the hat and the lining is finished and the air duct is defined by the arcuate, elongated recessed area and the lining.