Apparatus for transversely stretching tubular materials

Details Apparatus for transversely stretching tubular materials Apparatus for transversely stretching tubular materials

1977-03-29

1978-11-07

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Rod or tubular preform

425 72R, 425403, 425445, 264292, B29C 1702

Patent

active

041243501

ABSTRACT:
A machine for transversely stretching tubular materials comprises a hollow diverging mandrel and an endless sleeve of a flexible knitted fabric which toroidally embraces the mandrel. In use tubular material to be stretched is driven over the mandrel surface along with the flexible sleeve by friction drive means in the form of endless belts.

REFERENCES:
patent: 2697248 (1954-12-01), Longstreth et al.
patent: 3334391 (1967-08-01), Kueters et al.
patent: 3539666 (1970-10-01), Schirmer
patent: 3600488 (1971-08-01), Yazawa
patent: 3853448 (1974-12-01), Yazawa

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