Survival shelter for subzero climates

Claim 1

A LOW PROFILE COMPLETELY CLOSED SHELTER FOR PROVIDING PROTECTION FOR A MAN AT EXTREMELY LOW TEMPERATURES; COMPRISING A FIRST ARCUATE-SHAPED END WALL; A SECOND ARCUATESHAPED END WALL LARGER THAN SAID FIRST END WALL; A TAPERED ARCUATE WALL MEMBER CONNECTING SAID FIRST END WALL AND SAID SECOND WALL; SAID FIRST END WALL AND SAID SECOND END WALL AND SAID TAPERED ARCUATE WALL MEMBER HAVING N INNER WALL MEMBER OF LOW AIR PERMEABILITY MATERIAL, AN OUTER WALL MEMBER OF LOW AIR PERMEABILITY MATERIAL AND AN AIR PERMEABLE INSULATING MATERIAL BETWEEN SAID INNER WALL MEMBER AND SAID OUTER WALL MEMBER TO PERMIT BREATHING WITHIN THE SHELTER AND TO SUBSTANTIALLY PREVENT WIND PASSAGE HEAT RADIATION THROUGH SAID WALLS; A FLOOR MEMBER, OF LOW AIR PERMEABILITY MATERIAL, SECURED TO SAID FIRST AND SAID SECOND END WALLS AND SAID TAPERED ARCUATE WALL MEMBER; A PLURALTIY OF RIB SEPARATORS CONECTED BETWEEN THE INNER WALL MEMBER AND THE OUTER WALL MEBER OF SAID FIRST AND SECOND END WALLS AND SAID TAPERED ARCUATE WALL MEMBER; SAID SECOND END WALL HAVING TWO OVERLAPPING SEPARATED WALL MEMBERS FOR PROVIDING AN ENTRANCE TO SAID SHELTER: SAID OVERLAPPING WALL MEMBERS HAVING INTERFITTING EDGES, WITH A TOTAL THICKNESS SUBSTANTIALLY EQUAL TO THE THICKNESS OF SAID SECOND END WALL; MEANS FOR SECURING SAID INTERFITTING EDGES TOGETHER TO CLOSE SAID ENTRANCE; AN INFLATABLE SUPPORT WITHIN SAID SHELTER ATTACHED TO THE INNER TAPERED ARCUATE WALL OF SAID SHELTER; SAID INFLATABLE SUPPORT HAVING MEANS FOR PROVIDING AN AIR SPACE BETWEEN THE MAN OCCUPYING THE SHELTER AND THE TOP AND SIDES OF SAID SHELTER; AND MEANS ON SAID INFLATABLE SUPPORT FOR RECEIVING A PUMP FITTING WHEREBY SAID SUPPORT MAY BE INFLATED TO ERECT THE SHELTER.