Apparatus for everting a tube

Details Apparatus for everting a tube Apparatus for everting a tube

1990-10-05

1992-10-13

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

425 11, 425 59, 4253871, 425503, 156423, 118DIG10, B29C 6336

Patent

active

051549360

ABSTRACT:
In a tube eversion apparatus a first chamber in which the eversion pressure is developed is controllably sealed by a sphincter-type valve, the valve being in turn actuated by pressure developed in a preferably separately controllable and adjustable second chamber, another chamber preferably being provided above the sphincter-type valve for containing a supply of liquid and limiting turbulence from any escape of fluid past the sphincter-type valve, the other chamber also providing apparatus for supplying heated fluid to a lay-flat hose adapted to be pulled through the spincter-type valve by the tube being everted. Use of the improved apparatus involves appropriate modifications of the usual eversion process involving applying and controlling the everting pressure and the pressure exerted against the sphincter-type valve by the fluid in the second chamber.

REFERENCES:
patent: 4368091 (1983-01-01), Ontsuga et al.
patent: 4685983 (1987-08-01), Long, Jr.
Brochure, "Inpipe"-6 pages-date of brochure is more than one year before the filing date of this application. Inpipe is a Scandinavian Company.

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