(under subclass 182.1) Head coverings in which the spacing means, positioned between the head-contacting means and the crown, provides a through opening or perforation internally thereof, the axis of the opening or perforation extending substantially perpendicularly to the plane of the opening for the head.
(1) Note. The spacing means may be integral with the head-contacting means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
181.6, and 182.3, for head coverings having head-contacting means perforated through the thickness of the material in that portion of the head-contacting means which faces and generally contacts the head surface.
182.3, for head coverings having head-contacting means in general perforated through the thickness of the material.
