Patent ID: 8819871
Filing Date: 2014-09-02
Classification: A42B,Y10T

Abstract:
1. A protective helmet, comprising: a helmet shell ( 12 ) having opposite sides ( 28 ) and a crown ( 30 ) with front edges defining a front opening for exposing the face of a wearer of the helmet, the opposite sides and the crown each containing a hole ( 32 ) through the helmet shell and adjacent the front opening; a faceguard ( a first loopstrap ( a second loopstrap ( a third loopstrap ( each loopstrap having a curved loop ( a fastener extending through each set of the aligned apertures and helmet shell hole for connecting the faceguard to the helmet shell; at least the fasteners extending through the loopstrap apertures and helmet shell hole of the opposite sides of the helmet shell comprising: a nut ( a stud ( partial turn means between the nut and the stud for locking the stud to the nut when the stud is rotated by less than one half a revolution of the stud about its axis; at least a portion of an outer surface of the nut being non-circular and being closely engaged to an inner surface of the aperture of the first strap which is also non-circular so that the nut will not rotate in the aperture of the first strap when the stud is rotated; wherein the stud comprises an axial shaft ( a tension spring ( wherein the tension spring comprises a stack of wave rings (