Ratchet system for motorcycle helmet shield

A - Human Necessities – 42 – B

Patent

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Details

A42B 3/22 (2006.01) A42B 3/20 (2006.01) B21K 17/00 (2006.01)

Patent

CA 2111780

ABSTRACT OF THE DISCLOSURE A ratchet system for a motorcycle or bicycle helmet shield has a one-piece face shield with end tabs having a ring of upraised teeth and additional radially extending teeth along a curved edge. The ratchet system also has a pair of helmet-mounted side plates, each having a leaf spring with a central point that engages in grooves between the radially extending teeth of the end tabs. The end tabs are pivotally mounted on the side plates. The ratchet system also has shield covers having a set of surface teeth to engage with grooves between the upraised teeth of the end tabs. The ratchet system may also include bolts for attaching the system to the helmet, for holding the covers against the end tabs, and for adjusting the ratcheting tension. A bicycle or motorcycle helmet face shield for protecting a bicycle or motorcycle rider's face from the sun includes a transparent body, an ultraviolet ray-filtering coating on a surface of the body, and a reflective coating on the same surface of the body. A method for manufacturing a face shield having a reflective, ultraviolet ray-filtering surface includes molding the shield in a steel mold, washing the shield in detergent, forming an ultraviolet ray-filtering coating, washing the shield with freon, and bombarding a surface of the shield with heated tinting particles in a vacuum chamber.

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