Sealing apparatus

Claim 1

AN APARATUS FOR PRODUCING PACKAGES FROM LAMINAE OF HEAT SEALABLE MATERIAL, MEANS PRESENTING A PAIR OF THE LAMINAE IN CONFRONTING RELATION WITH EACH OTHER, CLAMPING MEANS INCLUDING FIRST AND SECOND COOPERATING LAMINAE-CLAMPING JAWS EACH HAVING A PAIR OF ELONGATE PARALLEL CLAMPING MEMBERS SPACED FROM EACH OTHER TO DEFINE AN UNOBSTRUCTED SPACE THEREBETWEEN, EACH OF SAID MEMBERS BEING DISPOSED OPPOSITE A CORRESPONDING MEMBER OF THE OTHER JAW, SAID JAWS EFFECTING CLAMPING OF ELONGATE JUXTAPOSED AND SPACED PORTIONS OF THE LAMINAE, THE CLAMPING MEMBERS OF ONE OF SAID JAWS HAVING MATERIAL-ENGAGING EDGE PORTIONS CONFRONTING THE OTHER JAW, SAID EDGE PORTIONS HAVING MEANS EFFECTING COOLING THEREOF FOR ABSORBING HEAT FROM THE CLAMPED LAMINAE ENGAGED THEREBY, A HEATED BAR EXTENDING ALONG SAID FIRST JAW AND HAVING A TEMPERATURE IN EXCESS OF THE MELTING TEMPERATURE OF THE HEAT SEALABLE MATERIALS, SAID BAR BEING MOVABLE THROUGH THE UNOBSTRUCTED SPACE OF SAID FIRST JAW AND TOWARD THE CLAMPED LAMINAE, AN ELONGATE, COOLED AND HEAT ABSORBING ELEMENT EXTENDING ALONG SAID SECOND JAW FOR MOVEMENT THROUGH SAID UNOBSTRUCTED SPACE THEREOF AND TOWARD SAID CLAMPED LAMINAE, SAID HEAT ABSORBING ELEMENT HAVING A TEMPERATUE SUBSTANTIALLY BELOW THE MELTING TEMPERATURE OF THE HEAT SEALABLE MATERIAL, MEANS THRUSTING SAID HEATED BAR FORWARDLY THROUGH THE UNOBSTRUCTED SPACE OF SAID FIRST JAW AND THROUGH THE CLAMPED LAMINAE INTO THE UNOBSTRUCTED SPACE OF SAID