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US 12,752,475 B2Granted
Method and machine for belling PVC-O pipes
AssigneeSica S.P.A.
InventorsGiorgio Tabanelli, Giovanni Vecchi
Life of this patent
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Abstract
A method for processing pipes made of thermoplastic material of the PVC-O type, including the following steps: a step of feeding pipes into a station for receiving the pipe; a step of heating a first end portion of the pipe, in a heating station; a step of belling the first end portion of the pipe, after the step of heating the first end portion of the pipe; and a step of making an inner taper at a first end portion of the pipe, in a tapering station, said inner taper being performed before the heating step.
Claims14
A method comprising the following steps:
- a step of feeding a pipe into a receiving station for receiving the pipe;
- a step of heating a first end portion of the pipe, in a heating station;
- a step of belling the first end portion of the pipe, after the step of heating the first end portion of the pipe;
- a step of making an inner taper at the first end portion of the pipe by material removal or plastic deformation, in a tapering station separate from the heating, said making the inner taper being performed before the heating step.
1 more element
Dependencies are inferred from the claim text.