Pipe apparatus

Claim 1

APPARATUS FOR USE IN FORMING A THERMALLY INSULATED PIPE COMPRISING: (A) MEANS FOR SUPPORTING A FIRST AND SECOND ASBESTOSCEMENT PIPE IN COAXIAL RELATIONSHIP, (B) SAID FIRST ASBESTOS-CEMENT PIPE HAVING AN OUTSIDE DIAMTER LESS THAN THE INSIDE DIAMETER OF SAID SECOND ASBESTOS-CEMENT PIPE SO AS TO FORM AN ANNULAR SPACE THEREBETWEEN, AND SAID FIRST ASBESTOS-CEMENT PIPE HAVING AN AXIAL EXTENT GREATER THAN THE AXIAL EXTENT OF SAID SECOND ASBESTOS-CEMENT PIPE AND POSITIONED TO PROTRUDE PAST EACH AXIAL EXTREMITY OF SAID SECOND ASBESTOS-CEMENT PIPE, (C) MEANS FOR PIVOTALLY MOUNTING ONE END OF SAID SUPPORTING MEANS, (D) MEANS FOR POSITIONING A FLUID RETAINING MEANS BETWEEN AND IN CONTACT WITH THE OUTER PERIPHERAL SURFACE OF SAID FIRST ASBESTOS-CEMENT PIPE AND THE INNER PERIPHERAL SURFACE OF SAID SECOND ASBESTOS-CEMENT PIPE ADJACENT ONE AXIAL EXTREMITY OF SAID SECOND ASBESTOS-CEMENT PIPE, (E) MEANS ADJACENT THE OTHER END OF SAID SUPPORTING MEANS FOR MOVING SAID SUPPORTING MEANS ABOUT SAID PIVOT TO A POSITION INCLINED RELATIVE TO THE HORIZONTAL, (F) MEANS FOR DEPOSITING AN EXPANDABLE THERMAL INSULATING MATERIAL INTO SAID ANNULAR SPACE BETWEEN SAID OUTER PERIPHERAL SURFACE OF SAID FIRST ASBESTOS-CEMENT PIPE AND THE INNER PERIPHERAL SURFACE OF SAID SECOND ASBESTOS-CEMENT PIPE, (G) MEANS FOR POSITIONING A FLUID RETAINING MEANS BETWEEN AND IN CONTACT WITH THE OUTER PERIPHERAL SURFACE OF SAID FIRST ASBESTOS-CEMENT PIPE AND THE INNER PERIPHERAL SURFACE OF SAID SECOND ASBESTOS-CEMENT PIPE ADJACENT THE OTHER AXIAL EXTREMITY OF SAID SECOND ASBESTOS-CEMENT PIPE, (H) MEANS FOR REMOVING SAID SUPPORTING MEANS FROM SAID FIRST AND SECOND ASBESTOS-CEMENT PIPES AFTER SAID EXPANDABLE THERMAL INSULATING MATERIAL HAS EXPANDED TO FILL SAID ANNULAR SPACE BETWEEN THE OUTER PERIPHERAL SURFACE OF SAID FIRST ASBESTOS-CEMENT PIPE AND THE INNER PERIPHERAL SURFACE OF SAID SECOND ASBESTOS-CEMENT PIPE.