Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent
1981-02-13
1983-10-11
Hoag, Willard E.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
118404, 118405, 2642098, 264213, 264255, 264323, 425113, 425446, 425457, 425467, B29F 300, B29C 100
Patent
active
044091729
ABSTRACT:
A device for fabricating multi-layer tubing has a reservoir for tubing solution and discharges such solution from an opening in the reservoir bottom. The reservoir is suspended so as to remain level. Extending through the opening is a vertical rod of smaller diameter but itself suspended by a flexible wire so as to remain vertical. Material in the reservoir extrudes as an annulus even in cross-section by passing between the edge of the reservoir opening and the rod. Such extruded material hardens into one layer of the tubing. There is a repetition with a larger reservoir opening and so depositing a larger tube that is dried on and over the first tube. This is repeated as often as desired to get a finished tube of the proper inside and outside diameter.
The method is following in succession the steps described above.
REFERENCES:
patent: 204227 (1978-05-01), Hyatt
patent: 223077 (1879-12-01), Tasker
patent: 285673 (1883-09-01), Phillips
patent: 2533986 (1950-12-01), Atterbury
patent: 2602980 (1952-07-01), Bryan
patent: 2616126 (1952-11-01), Merck et al.
patent: 2778404 (1957-01-01), Macy et al.
patent: 3212154 (1965-10-01), Crumpler
patent: 3233582 (1966-02-01), Sharetts et al.
patent: 3409068 (1968-11-01), Yearley et al.
patent: 4022933 (1977-05-01), Lee
Beckham Donald R.
Ward, Jr. Robert S.
Hoag Willard E.
Thoratec Laboratories Corporation
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