Apparatus for the production of reinforced flexible hoses

Details Apparatus for the production of reinforced flexible hoses Apparatus for the production of reinforced flexible hoses

1991-06-03

1993-06-08

Hoag, Willard

Plastic article or earthenware shaping or treating: apparatus

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

Extrusion shaping means

4251311, 425383, 425392, B29C 4706, B29C 4752, B29C 4790

Patent

active

052177238

ABSTRACT:
Apparatus for the production and proper calibration of improved flexible hoses made by a soft thermoplastic material reinforced with a continuous spiral of rigid thermoplastic material. During their production the hoses do not rotate but are produced linearly and in their internal surface no longitudinal grooves are engraved. The melted coaxial materials are discharged through a rotating mechanism to a calibration unit which rotates with it and bears peripherally special inclined rollers on which is transmitted, via an epicyclic gearing system, a controlled rotation opposite to the above direction. On this calibration unit the plastic hose is formed successively, advancing linearly forward.

REFERENCES:
patent: 3395205 (1968-07-01), Petzetakis
patent: 3605189 (1971-09-01), Bauman et al.
patent: 3642396 (1972-12-01), Meneidis
patent: 3642982 (1968-12-01), Petzetakis
patent: 4033808 (1972-07-01), Petzetakis
patent: 4157235 (1979-06-01), Lagabe et al.

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