Multistage model rocket

Claim 1

IN A MODEL ROCKET HAVING AT LEAST TWO SEPARABLE STAGES, THE COMBINATION COMPRISING: AT LEAST TWO SEPARABLE ROCKET CASING MEMBERS; A FIRST PYROPROPULSIVE ROCKET MOTOR MEMBER MOUNTED WITHIN ONE OF SAID CASING MEMBERS; A SECOND PYROPROPULSIVE ROCKET MOTOR MEMBER MOUNTED WITHIN THE OTHER OF SAID CASING MEMBERS; SAID CASING MEMBER, SAND HENCE SAID FIRST AND SECOND MOTOR MEMBERS, BEING ARRANGED IN END-TO-END ALIGNED RELATIONSHIP FORMING AN INTERFACE BETWEEN SAID CASING MEMBERS AND AN INTERFACE BETWEEN SAID CASING OND MOTOR MEMBERS; RELEASABLE COUPLING MEANS PROVIDED AT ONE OF SAID INTERFACES TO MAINTAIN SAID MEMBERS IN SAID ALIGNED RELATIONSHIP; SAID RELEASABLE COUPLING MEANS INCLUDING A STRIP OF MATERIAL AT LEAST PARTIALLY SURROUNDING SAID ONE INTERFACE, SAID STRIP HAVING A PORTION THEREOF SECURED TO THE EXTERIOR OF EACH OF THE ALIGNED MEMBERS FORMING SAID ONE INTERFACE; SAID COUPLING MEANS MAINTAINING SAID MEMBERS IN SAID ALIGNED RELATIONSHIP SO LONG AS SAID MOTOR MEMBERS ARE UNIGNITED; SAID FIRST MOTOR MEMBER HAVING MEANS IGNITABLE TO THEREBY CREATE A POSITIVE PRESSURE AT SAID ONE INTERFACE AND TO EVENTUALLY IGNITE SAID SECOND MOTOR MEMBER; SAID POSITIVE PRESSURE SERVING AS MEANS TO RELEASE SAID COUPLING MEANS TO THEREBY PERMIT SAID CASING MEMBERS TO SEPARATE FROM ONE ANOTHER.