Fatigue resistant hose

Details Fatigue resistant hose Fatigue resistant hose

1984-10-01

1990-02-06

Bryant, III, James E.

Pipes and tubular conduits

Flexible

Spirally wound material

138124, 138125, F16L 1104

Patent

active

048982121

ABSTRACT:
Disclosed are embodiments (30, 40, 50) of a flexible reinforced hose that is provided with substantial improvement in flex fatigue resistance by incorporating at least one pair of oppositely helically wound layers of fiberous reinforcement about core tube (1) having a singular wall or a core tube having a composite wall (15, 16) of fibers (3) having a tenacity of about 12 to about 25 grams for denier and an elongation at break of about 2% to about 8% that are disposed in alternating contiguous relationship to fibers (4) having a tenacity of from about 7 to 11 grams per denier and an elongation at break of about 9% to about 17%. The hose may include other helically covered and/or braided layers of reinforcement, preferably includes a protective covering jacket (8) and may or may not include structure such as an adhesive for bonding one or more of the reinforcement layers or the entire construction together.

REFERENCES:
patent: 3905398 (1975-09-01), Johansen et al.
patent: 4131757 (1978-12-01), Felkel
patent: 4196464 (1980-04-01), Russell
patent: 4259991 (1981-04-01), Kutnyak
patent: 4317000 (1982-02-01), Ferer

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