Thermally insulated composite flexible hose

Details Thermally insulated composite flexible hose Thermally insulated composite flexible hose

1981-11-18

1983-08-16

Askin, Laramie E.

Electricity: conductors and insulators

Combined fluid conduit and electrical conductor

138111, 174 95, F16L 1104, F16L 1112

Patent

active

043993192

ABSTRACT:
A thermally insulated composite flexible hose, particularly suited for heat exchanger connections in building structures, comprising an outer foam jacket of thermal insulation and an inner extended unitary elastomeric extrusion comprising primary tubes spaced apart by an intermediate section separable therefrom along tear lines. The intermediate section may comprise two additional tubes smaller in diameter than the primary tubes. Insulated electrical conductors may be disposed along the outside of the unitary extrusion and inside the jacket.

REFERENCES:
patent: 989532 (1911-04-01), Macduffee
patent: 1959302 (1934-05-01), Paige
patent: 2916055 (1959-12-01), Brumbach
patent: 3281571 (1966-10-01), Gilmore
patent: 3400737 (1968-09-01), Matthews et al.
patent: 3747632 (1973-07-01), Kok et al.
patent: 4194536 (1980-03-01), Stine et al.
patent: 4273070 (1981-06-01), Hoefelmayr

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