Connecting device and method
First Claim
1. A process for providing a free end of a deformable rigid pipe with a connecting section having a desired contour adapted to mate with a connecting section of another pipe, said connecting section including an individual unobstructed external outwardly projecting circumferential reinforced bead spaced from the free end of said pipe, said process comprising the steps of:
- positioning at said free end a concentric reinforcing sleeve having smooth inner and outer walls made of a material which is mechanically stronger than said pipe, without any connection between said pipe and said sleeve which can inhibit slippage between said sleeve and said pipe, said sleeve having end edges which are bevelled or rounded facing the surface of said pipe,and simultaneously radially expanding a section of said end and said sleeve to form said contour and said bead within the overlapping length of said pipe and said sleeve, the outer surfaces of both of said end and said sleeve being correspondingly expanded to the contour of said head.
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Accused Products
Abstract
Process for providing a rigid pipe, particularly made of light alloy, with a connecting section comprising a projecting peripheral bead, whereby a reinforcing sleeve is firstly positioned at a free end of said pipe, after which said end provided with its sleeve is deformed to the shape desired for said connecting section said process further comprising the step of deforming said end and said sleeve together to form, in the connecting section, the projecting peripheral bead, which thus participates in the connection of said sleeve on said pipe end.
173 Citations
9 Claims
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1. A process for providing a free end of a deformable rigid pipe with a connecting section having a desired contour adapted to mate with a connecting section of another pipe, said connecting section including an individual unobstructed external outwardly projecting circumferential reinforced bead spaced from the free end of said pipe, said process comprising the steps of:
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positioning at said free end a concentric reinforcing sleeve having smooth inner and outer walls made of a material which is mechanically stronger than said pipe, without any connection between said pipe and said sleeve which can inhibit slippage between said sleeve and said pipe, said sleeve having end edges which are bevelled or rounded facing the surface of said pipe, and simultaneously radially expanding a section of said end and said sleeve to form said contour and said bead within the overlapping length of said pipe and said sleeve, the outer surfaces of both of said end and said sleeve being correspondingly expanded to the contour of said head. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification