Pipes and tubular conduits – Flexible – Spirally wound material
Patent
1980-03-24
1981-12-08
Little, Willis
Pipes and tubular conduits
Flexible
Spirally wound material
138133, 138154, F16L 1108, F16L 1111
Patent
active
043042660
ABSTRACT:
A helically fabricated flexible hose having a self-supporting helical reinforcing element of non-circular cross-section with a flat side facing inwardly, thereby imparting a substantially smooth surface to the hose interior.
REFERENCES:
patent: 2674297 (1954-04-01), Greenwald
patent: 3323553 (1967-06-01), Richitelli et al.
patent: 4098298 (1978-07-01), Vohrer
patent: 4224463 (1980-09-01), Koerber et al.
Koerber Marvin A.
Kutnyak Thomas A.
Automation Industries, Inc.
Carten Francis N.
Little Willis
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