Patent ID: 8370967

Claim:
An adjustable head band for a helmet comprising: a base having a chamber; a front opening; two slots; and a ratchet mount protruding on the base; a band movably mounted through the base and having two toothed ends mounted respectively through the slots of the base and disposed in the chamber of the base, and having teeth facing each other; an adjusting wheel mounted on the base and having a gear engaging between the toothed ends of the band; a ratchet wheel attached concentrically to the gear and having a surface; at least one connecting protrusion protruding from the surface of the ratchet wheel; and a center hole formed through the gear and the ratchet wheel and mounted around the ratchet mount of the base; a dial mounted rotatably on the adjusting wheel and having a closed front having an inner surface; and a recess formed in the inner surface of the closed front and mounted on the connecting protrusion of the adjusting wheel, and having a recess face separated from the connecting protrusion of the adjusting wheel; and an annular sidewall having an abutting surface; and a cover corresponding to and covering the front opening of the base and having a mounting hole mounted around the dial, and wherein the base further has at least one resilient sheet formed on the base adjacent to the ratchet mount, and each one of the at least one resilient sheet having a free end; a pawl protruding from the free end of the resilient sheet and having an end; and an abutting protrusion protruding from the end of the pawl; and the ratchet wheel of the adjusting wheel engages the pawl of the base.