Pressure tight igniter fitting

Claim 1

AN IGNITER FITTING FOR PROPELLANT ACTUATED DEVICES AND THE LIKE, COMPRISING A BODY MEMBER HAVING ONE END SECURABLE TO A PROPELLANT MEANS AND ITS OTHER END CARRYING RELEASABLE RETAINING MEANS, MEANS WITHIN SAID ONE END FOR GENERATING GAS PRESSURE WITHIN SAID BODY MEMBER, MEANS WITHIN SAID OTHER END FOR COOPERATING WITH SAID RETAINING MEANS TO SECURE THERETO A FUZE CORE FOR INITIATING SAID GAS GENERATING MEANS, SELF-SEATING PISTON MEANS INTERMEDIATE SAID COOPERATING MEANS AND GAS GENERATING MEANS, SAID CORE EXTENDING THROUGH SAID PISTON AND INTO SAID GAS GENERATING MEANS, AND FLEXIBLE SEAL MEANS POSITIONED AT THE ENTRANCE OF SAID CORE INTO SAID PISTON WITH SAID FLEXIBLE SEAL NORMALLY UNDER PARTIAL COMPRESSION AND WITH SAID CORE HAVING A PORTION EMBEDDED BETWEEN SAID PISTON AND A PORTION OF SAID PARTIALLY COMPRESSED SEAL, SO CONSTRUCTED AND ARRANGED THAT UPON BURNING OF SAID CORE EMBEDDED PORTION SAID FLEXIBLE SEAL PORTION WILL ASSUME ITS NORMALLY PARTIALLY COMPRESSED CONDITION AND SEAL SAID PISTON CORE ENTRANCE AND THAT GAS PRESSURE WILL BE ENTRAPPED WITHIN SAID BODY MEMBER UPON SUBSEQUENT IGNITION OF SAID GAS GENERATING MEANS.