Implementation for applying a lining to the inner wall of a tubu

Details Implementation for applying a lining to the inner wall of a tubu Implementation for applying a lining to the inner wall of a tubu

1978-05-23

1980-12-23

Lowe, James B.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

425468, B29C 112, B29C 2716, B28B 2120, B28B 2180

Patent

active

042407753

ABSTRACT:
A machine is disclosed for applying an inner lining to a tubular article. The machine is introduced in the interior of the tubular article, centered herein and has the configuration of an inner expansible core. Sealing rings are then applied to close the ends of the annular gap so provided and the inner coating material cast in the gap while air is concurrently discharged. An improved centering mechanism for such machine is also described. Core expansion can be obtained both pneumatically and mechanically.

REFERENCES:
patent: 719679 (1903-02-01), Lyman
patent: 1122977 (1914-12-01), Mooney
patent: 1964386 (1934-06-01), Nose
patent: 2579423 (1951-12-01), Ford
patent: 3258384 (1966-06-01), Scott
patent: 3482007 (1969-12-01), Routh
patent: 3585695 (1971-06-01), Penny et al.
patent: 4060218 (1977-11-01), Nayagam

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