Pipes and tubular conduits – Combined
Patent
1980-04-21
1982-01-26
Askin, Laramie E.
Pipes and tubular conduits
Combined
138121, 138137, 138141, 156272, 174 47, 264508, 4251748R, 425370, F16L 1111, B29C 2704
Patent
active
043123830
ABSTRACT:
A hose construction and apparatus for and method of making such hose construction are provided wherein the hose construction comprises a corrugated outer tube made of polymeric material and having alternating projections and recesses with the recesses having inwardly facing convex surfaces and an inner tube made primarily of polymeric material and having smooth inside and outside surfaces with the outside surface being bonded against the convex surfaces and wherein the inner tube has at least one longitudinally extending polymeric portion comprising same which has electrically conductive particles embedded therein in which the polymeric portion serves as a matrix for the particles and with the polymeric portion being heat fused to the convex surfaces.
REFERENCES:
patent: 2393541 (1946-01-01), Kohler
patent: 3280430 (1966-10-01), Antrobus
patent: 3461014 (1969-08-01), James
patent: 3538209 (1970-11-01), Hegler
patent: 3574031 (1971-04-01), Heller, Jr. et al.
patent: 3620875 (1971-11-01), Guglielmo, Sr. et al.
patent: 3945867 (1976-03-01), Heller, Jr. et al.
patent: 3996323 (1976-12-01), Hegler et al.
Askin Laramie E.
Dayco Corporation
Tassone Joseph V.
LandOfFree
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