Hose construction
AssigneeParker-Hannifin Corporation
InventorsDonald E. Washkewicz, John R. Greco
Life of this patent
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Abstract
A high strength flexible hose for conveying fluids under pressure wherein the hose includes a synthetic thermoplastic polymeric core tube, one or more inner reinforcing layers of a high strength aramid yarn having a section modulus of over 400 grams per denier and a tenacity of more than 15 grams per denier at room temperature, and one or more outer reinforcing layers of metal wire.
Claims14
A high burst strength flexible composite hose comprising a flexible core tube, one or more inner layers of fibrous reinforcing material disposed about said core tube having a contribution to the total strength of the composite of between 3% and 40%, said one or more inner layers of fibrous reinforcing material being applied with spaces between adjacent strands of said fibrous material, said fibrous reinforcing material having a modulus of elasticity of about 400 grams per denier and a tenacity of at least 15 grams per denier at room temperature, and one or more outer layers of metal wire reinforcing material disposed about said one or more inner layers.
A high burst strength flexible composite hose comprising a flexible core tube of synthetic material, one or more inner layers of fibrous reinforcing material applied around said core tube to give coverage of less than 100%, said fibrous reinforcing material having a modulus of elasticity of at least 400 grams per denier and a tenacity of at least 15 grams per denier at room temperature, said one or more inner layers of fibrous reinforcing material being applied at an angle between 48.degree. and 56.degree., and one or more outer layers of metal wire reinforcing material applied at an angle between 50.degree. and 58.degree. about said one or more inner layers.
Dependencies are inferred from the claim text.