| 摘要 |
<p>Pipe coupling having an essentially cylindrical housing (1) with radially inward directed end portions, said housing being provided with a longitudinal dividing slit (3) and being contractible circumferentially by means of clamping bolts (6), a tubular sealing sleeve (9) of elastomer material being provided which is enclosed by said housing and has inwardly bent end portions to act as sealing lips (10), said sleeve being further provided with conical end faces slanting towards the centre and towards the axis of the coupling, said end faces supporting correspondingly conically shaped clamping rings (12, 13), which are circumferentially split and thereby circumferentially contractible, said clamping rings engaging the housing with their outer circumferential edges at the transitional area between the cylindrical part and the radially inward directed end portions, and are provided at their inner circumference with tooth-shaped projections (14) racing the surface of the pipes to be coupled, characterized in that according to the invention this aim is achieved in that at least one of the clamping rings is extended at its inner circumference in the form of a foot portion (13B) that extends in the axial direction, the inner circumferential face of which foot portion being provided with several (series of) projections positioned close to each other in the axial direction.</p> |
