Adjustable pipe jacket

Claim 1

A PIPE JACKET FOR USE IN ENCASING A PIPE AND INSULATION ABOUT THE PIPE, THE JACKET BEING OF ADJUSTABLE DIAMETER AND OCMPRISING: A COVER MEMBER HAVING INTERFITTING FIRST AND SECOND SIDE PORTIONS, THE FIRST SIDE PORTION INCLUDING AN EDGE; A PLURALITY OF TABS ON THE FIRST SIDE PORTION, THE TABS BEING ARRANGED IN GROUPS, AND EACH GROUP HAVING ITS TABS DISPOSED IN ROWS SUBSTANTIALLY PERPENDICULAR TO THE EDGE, THE ROWS OF EACH GROUP BEING STAGGERED; THE TABS EXTENDING ANGULARLY OUTWARD FROM THE FIRST SIDE PORTION AND INCLUDING FREE OUTER END PORTIONS EXTENDING AWAY FROM THE EDGE OF THE FIRST SIDE PORTION; THE SECOND SIDE PORTION OF THE COVER MEMBER HAVING AN IMPERFORATE TOP SECTION, A REVERTED SECTION UNDERLYING THE TOP SECTION AND OF A DEPTH AT LEAST EQUAL TO THE DEPTH OF THE FIRST SIDE PORTION, AND A REBENT SECTION UNDERLYING THE TOP AND REVERTED SECTIONS CONNECTED TO THE REVERTED SECTION BY AN INTERIOR WALL; THE SECTIONS UNDERLYING THE IMPERFORATE TOP SECTION HAVING PLURAL OPENING MEANS ASSOCIATED THEREWITH, THE OPENING MEANS BEING GROUPED, WHEREBY THE ROWS OF TABS ARE ENGAGEABLE WITH SELECTED GROUPS OF THE OPENING MEANS TO ADJUSTABLY INTERLOCK THE FIRST SIDE PORTION AND THE SECOND SIDE PORTION WITH THE FIRST SIDE PORTION ENCASED WITHIN THE SECOND SIDE PORTION AND WITH ALL OPENINGS IN THE COVER ENCLOSED THEREIN; AND COMPLEMENTARY INDICIA MEANS ON THE FIRST AND SECOND SIDE PORTIONS FOR ALIGNMENT OF THE TABS AND OPENING MEANS.