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US 4,747,768 AGranted
Apparatus for manufacturing shaped articles of plastics material, particularly filling pipes for fuel tanks of motor vehicles
Assignee501 C-Plast di Crupi D. & C. S.N.C.
InventorGiuseppe Crupi
Life of this patent
Estimating the term…
Abstract
In order to manufacture shaped tubular articles of plastics material, a semi-finished tube of softened plastics which is substantially straight and has a diameter about equal to the diameter of the article to be formed is introduced into a mould defining a cavity which is substantially straight. Subsequently, the mould is operated so as to deform the cavity and give it a shape corresponding to the shape of the article to be formed.
Claims7
An apparatus for forming a curve in a semi-finished tube of softened plastic material comprising:
- two complementary half-moulds operable to mate together to define a tubular mould cavity, at least one of said half-moulds having two mould sections defining a portion of said mould cavity, one of said mould sections being angularly rotatable relative to the other about a predetermined axis between a first position wherein said mould cavity is substantially straight and a second position wherein said mould cavity has a shape reproducing the curve to be formed in said tube of softened plastic material, and means for moving said one mould section from said first position to said second position.
Dependencies are inferred from the claim text.