Apparatus for making corrugated flexible tubing

Details Apparatus for making corrugated flexible tubing Apparatus for making corrugated flexible tubing

1973-12-12

1976-06-29

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Diverse distinct type shaping means

Shaping orifice and either a downstream preform reshaping...

264287, 425336, 425369, 425371, 425392, 425404, B29C 1702

Patent

active

039663795

ABSTRACT:
Apparatus for making corrugated flexible tubing such as the suction hose used in a vacuum cleaner comprises an extruder which extrudes tubular plastic material with annular corrugations, followed by a higher-speed haul-off device, a heater, a cooler, and a lower speed haul-off device, all placed to act on the corrugated tube as the latter is passing over a mandrel, so that the corrugations become compressed to a close-pitched condition by the speed differential of the haul-off devices, the condition being set by the action of the heater and cooler.

REFERENCES:
patent: 2347101 (1944-04-01), Harding
patent: 3024496 (1962-03-01), Colombo
patent: 3169274 (1965-02-01), Colombo
patent: 3314110 (1967-04-01), Missbach
patent: 3349156 (1967-10-01), Zieg
patent: 3399262 (1968-08-01), Quackenbush et al.
patent: 3510383 (1970-05-01), Yovanovich
patent: 3530538 (1970-09-01), Quackenbush
patent: 3714311 (1973-01-01), Stefanka
patent: 3732046 (1973-05-01), Martin et al.

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