Air-conditioned helmet

Claim 1

AN AIR-CONDITIONED HELMET COMPRISING, IN COMBINATION: AN UNBROKEN APPROXIMATELY SEMI-SPHERICAL HELMET SHELL; AN APPROXIMATELY SEMI-SPHERICAL AIR DISTRIBUTING HELMET LINER SUPPORTED WITHIN SAID SHELL AND PERIPHERALLY ENGAGING SAID SHELL TO PROVIDE AN AIR CHAMBER BETWEEN THE SHELL AND LINER FOR RETAINING AIR UNDER PRESSURE, SAID LINER HAVING A PLURALITY OF RESTRICTED FLOW OPENINGS THEREIN FOR RELEASING AIR AT VARIOUS POINTS ABOUT THE HEAD OF THE WEARER; AIR INLET MEANS ADAPTED TO BE CONNECTED TO A SOURCE OF AIR UNDER PRESSURE AND FOR DELIVERING AIR TO THE INTERIOR OF SAID CHAMBER, SAID AIR INLET MEANS INCLUDING A SHORT PIPE SECTION FASTENED BETWEEN THE LOWER REARWARD PORTIONS OF SAID SHELL AND LINER, AND BEING SO DIRECTED AS TO DISCHARGE ENTERING AIR AGAINST SAID LINER AT A POINT REMOVED WITH RESPECT TO SAID RESTRICTED FLOW OPENINGS; AND MEAN WITHIN THE LINER FOR SUPPORTING SAID LINER UPON, AROUND AND SPACED FROM THE HEAD OF A WEARER, WHEREBY AIR DIRECTED INTO THE AIR CHAMBER AND DISCHARGED THROUGH SAID RESTRICTED OPENINGS CAN FLOW DOWN, OVER AND AROUND THE WEARER''S HEAD AND FROM BENEATH THE LINER FOR AIRING AND BREATHING PURPOSES.