Snap-on metal jacketed pipe insulation

Claim 1

INSULATION FOR CONDUITS COMPRISING: (A) A GENERALLY TUBULAR INSULATION FOR FITTING AROUND A CONDUIT, (B) SAID UNSULATION HAVING AT LEAST ONE PAIR OF GENERALLY LONGITUDINALLY EXTENDING ADJACENT EDGES FORMING A LONGITUDINAL SLIT, (C) A GENERALLY TUBULAR JACKET COMPRISING RESILIENT SHEET METAL URGING SAID JACKET INTO SAID TUBULAR FORM AND COVERING SAID INSULATION, (D) SAID JACKET HAVING A PAIR OF EDGES EACH OF WHICH EXTEND GENERALLY PARALLEL TO SAID LONGITUDINAL SLIT, (E) ONE OF SAID EDGES OF SAID JACKET WHEN IN SAID GENERALLY TUBULAR FORM OVERLAPPING THE OTHER OF SAID EDGES OF SAID JACKET TO FORM A JOINT, (F) SAID LONGITUDINAL SLIT AND SAID JOINT, WHEN SAID INSULATION AND SAID JACKET ARE SPREAD OPEN ALONG SAID SLIT AND SAID JOINT, FORMING A PASSAGEWAY FOR SAID CONDUIT SO THAT SAID INSULATION MAY BE POSITIONED AROUND SAID CONDUIT, (G) SAID METAL JACKET IN CONTIGUOUS RELATIONSHIPS, INTO SAID GENERALLY TUBULAR FORM SWITH SAID EDGE OF SAID INSULATION AND SAID OVERLAPPING PROTIONS OF THE EDGES OF SAID JACKET IN CONTIGUOUS RELATIONSHIPS, (H) MEANS SECURING SAID INSULATION TO SAID METAL JACKET, (I) SAID METAL JACKET HAVING A PORTION, OF CONTINUOUS LONGITUDIAL EXTENT AND CONTINUOUS ARCUATE EXTENT BETWEEN SAID SECURING MEANS, GENERALLY DIAMETRICALLY OPPOSITE SAID LONGITUDIAL SLIT AND SAID JOINT, PROVIDING A CONTINUOUS RESILIENT ARCUATE HINGE SECTION, (J) SAID CONTINUOUS RESILIENT ARCUATE HINGE SECTIONS BEING FREE OF SECURENMENT TO SAID INSULATION AND PRESENTING AN AREA FREE TO FLEX AND ACT AS A RESILIENT HINGE SO THAT SAID INSULATION MAY BE OPENED ALONG SAID JOINT AND SAID LONGITUDINAL SLIT TO BE POSITIONED AROUND SAID CONDUIT, AND (K) SAID CONTINOUS RESILIENT ARCUATE HINGE SECTION WHEN FLEXED PROVIDING AN ADDITIONAL RESILIENT FORCE URGING AND INSULATION INTO SAID GENERALLY TUBULAR FORM WITH SAID EDGES OF SAID INSULATION AND SAID OVERLAPPING PORTIONS OF THE EDGES OF SAID JOINT IN CONTIGUOUS RELATIONSHIP SO THAT SAID INSULATION MAY BE SNAPPED RELATIONSHIP SO THAT SAID INSULATION MAY