초록 ▼

A device for coupling two pipe sections comprises a clamping band of U-shaped cross-section with two inwardly directed flanges for encompassing end beads of the pipe sections which are to be coupled. The ends of the clamping band have cylindrical pockets each accommodating a cylindrical element whic

A device for coupling two pipe sections comprises a clamping band of U-shaped cross-section with two inwardly directed flanges for encompassing end beads of the pipe sections which are to be coupled. The ends of the clamping band have cylindrical pockets each accommodating a cylindrical element which is rotatable about its own axis in the pocket. The clamping band is clamped by means of a threaded screw which is passed through an unthreaded hole in one cylindrical element and unthreaded holes in the ends of the clamping band, whereupon the screw is in threaded engagement with the other cylindrical element.

대표청구항 ▼

[ What is claimed is:] [1.] A pipe coupling assembly comprising:first and second pipe sections of ventilating pipes and grain conveying pipes formed from metal sheet, each pipe section having an outwardly directed end bead at a respective end thereof, each end bead having a radially outwardly direct

[ What is claimed is:] [1.] A pipe coupling assembly comprising:first and second pipe sections of ventilating pipes and grain conveying pipes formed from metal sheet, each pipe section having an outwardly directed end bead at a respective end thereof, each end bead having a radially outwardly directed surface and a surface flush with the respective pipe section end and lying in a plane orthogonal to the axis of the pipe sections and opposing the other end bead when the first and second pipe sections are coupled in an end-to-end relationship;a coupling device comprising:an annular clamping band with two opposite, spaced-apart ends, at which a clamping mechanism is arranged for tightening the band around the end beads of the pipe sections, the clamping band being of substantially U-shaped cross-section and comprising:an annular bead bridging member having a radially inwardly facing inside surface extending linearly across the radially outwardly directed surfaces of the end beads when arranged in the end-to-end relationship, andtwo flanges extending inwardly from opposite edges of the bead bridging member, the bead bridging member and the two flanges arranged for securely encompassing the end beads;each respective end of the clamping band having respective first and second pockets each with at least partial circular-cylindrical cross-section and having a hole through an adjacent portion of the clamping band end;said clamping mechanism comprising:first and second cylindrical elements which are each arranged in said first and second pockets respectively and each having a circular-cylindrical cross-section, a cross-sectional dimension of said first and second cylindrical elements at their greatest being slightly smaller than an internal cross-sectional dimension of said first and second pockets at their smallest, anda tightening screw for connecting said cylindrical elements,the first cylindrical element having a transverse hole threaded for said tightening screw, the second cylindrical element having a transverse hole permitting free movement of said tightening screw;said tightening screw extending freely through the hole of said second cylindrical element, through the holes in the ends of the clamping band and being in threaded engagement with the threaded hole of said first cylindrical element;each of said first and second cylindrical elements being freely rotatable inside the respective first and second pockets about a cylindrical axis thereof; anda circumferential seal disposed on the inside surface of the bead bridging member of the clamping band to abut against said radially outwardly directed surfaces of the end beads to exert a radially inwardly directed pressure on the radially outwardly directed surfaces of the end beads to form a sealing surface thereagainst, the seal configured to overlie the end beads and having a configuration complementary to the radially outwardly directed surfaces of the end beads, the seal further configured to fill a space between the radially outwardly directed surfaces of the end beads and the inside surface of the bead bridging member without extending into a space between the opposed surfaces of the end beads when coupled in the end-to-end relationship.