Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1981-11-27
1983-10-18
Hoag, Willard E.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
138174, B29D 2304, B29F 300
Patent
active
044104766
ABSTRACT:
A method for making a radially compliant acoustic line array hose with imved toughness and wear resistance, suitable for use in towed acoustical line array sonars. The hose comprises a long extruded cylindrical tubing of a soft flexible grade of geophysical, plasticized polyvinyl chloride material with longitudinal ribs of a stiffer, harder grade of geophysical plasticized polyvinyl chloride material located at or near the tubing surface, and spaced uniformly around the circumference of the tubing. The ribs are melt-bonded to the softer thermoplastic material while each is in their respective melt stages during the extrusion process.
REFERENCES:
patent: 3416982 (1968-12-01), Petzetakas
patent: 3441637 (1969-04-01), Davis
patent: 3574810 (1971-04-01), Tourney et al.
patent: 3605189 (1971-09-01), Bauman et al.
patent: 3642396 (1972-02-01), Meneidis
patent: 3825036 (1974-07-01), Stent
Hauptmann Robert O.
Redding John J.
Beers Robert F.
Hoag Willard E.
Lall Prithvi C.
McGill Arthur A.
The United States of America as represented by the Secretary of
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