Gas lasers with improved capillary tube

Claim 1

A GAS LASER COMPRISING: A HOLLOW BODY MEMBER HAVING COAXIAL OPENINGS AT OPPOSING ENDS; TWO HOLLOW END CHAMBERS ONE EACH OF WHICH IS JOINED WITHIN THE OPENINGS AT OPPOSING ENDS OF SAID BODY MEMBER, SAID HOLLOW END CHAMBERS EACH HAVING AN OPENING AXIALLY EXTENDING INTO SAID BODY MEMBER AND A CLOSED CAPILLARY END EXTENDING OUTWARDLY FROM THE JUNCTION BETWEEN SAID END CHAMBER AND SAID BODY MEMBER, THE CAPILLARY END ON ONE OF SAID HOLLOW END CHAMBERS BEING COAXIAL WITH THE CAPILLARY END ON THE OTHER OF SAID END CHAMBERS WHEN SAID END CHAMBERS ARE JOINED TO SAID BODY MEMBER; A HOLLOW BY-PASS TUBE JOINING THE INTERIORS OF SAID END CHAMBERS AT THE REGIONS EXTENDING OUTWARDLY FROM THE JUNCTIONS BETWEEN SAID END CHAMBERS AND SAID BODY MEMBER; A CAPILLARY TUBE WITH AN ELONGATED CENTRAL TUBE PORTION HAVING OPPOSING ENDS JOINED TO THE OPENINGS OF SAID END CHAMBERS WITH THE CENTRAL TUBE PORTION COAXIAL WITH THE CLOSED CAPILLARY ENDS ON SAID END CHAMBERS, SAID CAPILLARY TUBE BEING METALLIC AND COATED ON THE INSIDE WITH A DIELECTIRC MATERIAL; A CATHODE MEANS JOINED TO AND IN COMMUNICATION WITH THE INSIDE OF ONE OF SAID END CHAMBERS; AN ANODE MEANS JOINED TO AND IN COMMUNICATION WITH THE INSIDE OF THE OTHER OF SAID END CHAMBERS; SAID CATHODE MEANS AND SAID ANODE MEANS BEING MOUNTED TO PREVENT MECHANICAL OBSTRUCTION ALONG THE LONGITUDINAL AXIS THROUGH SAID LASER AND HAVING CONNECTING MEANS FOR JOINING SAID CATHODE AND SAID ANODE TO A POWER SUPLY; SAID BODY MEMBER FUTHER HAVING PASSAGE MEANS IN COMMUNICATION WITH THE INTERIOR OF SAID BODY MEMBER AND ADAPTED FOR JOINING TO AN EXTERNAL SOURCE OF COOLING FLUID FOR FLOWING COOLING FLUID THROUGH THE ANNULUS FORMED BETWEEN THE INTERIOR FOF SAID BODY MEMBER AND THE EXTERIOR OF SAID CAPILLARY TUBE.