Patent ID: 7865976
Filing Date: 2011-01-11
Classification: A42B,A42C

Abstract:
1. A helmet, comprising: an exterior helmet form having a first plurality of vent holes of a first size; a vent shield positioned over the first plurality of vent holes, the vent shield having a second plurality of vent holes arranged in a plurality of distinct patterns, wherein each distinct pattern comprises a plurality of vent holes, wherein each of the second plurality of vent holes has a second predetermined size smaller than the first size, and each distinct pattern of vent holes coincides with one of the plurality of vent holes in the helmet form; and a vent airflow regulator positioned over the vent shield, the vent airflow regulator having a third plurality of vent holes arranged in a plurality of distinct patterns having substantially the same shape as the patterns in the vent shield, wherein each of the third plurality of vent holes is at least about as large as the corresponding second predetermined size, wherein the vent airflow regulator is positionable to align the vent holes of the vent shield with the vent holes of the vent airflow regulator and positionable to close the vent holes of the vent shield.