Pipes and tubular conduits – Flexible – Distinct layers
Patent
1993-03-15
1995-07-11
Bryant, III, James E.
Pipes and tubular conduits
Flexible
Distinct layers
138103, 138109, 138118, 138121, 138147, 174 47, 361215, F16L 1114
Patent
active
054311918
ABSTRACT:
An all plastic (preferably fluorocarbon) automotive hose has great strength relative to the light weight thereof. The hose is made of an inner layer which has a preferably circumferential grooves on an outer wall and an electrically conductive surface on an inner wall. An outer jacket is extruded over the outer wall with the jacket material filling all grooves to provide a mechanical interlocking between the inner layer and the jacket. The cross section of the grooves is selected on a basis of the amount of mechanical movement desired between the inner layer and jacket. Some grooves provide uniform flexibility, some provide progressively greater resistance to bending, and some provide a differential resistance to bending--more resistance in one direction than in another direction.
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patent: 4261390 (1981-04-01), Belofsky
patent: 4312383 (1982-01-01), Kleykamp
patent: 4970351 (1990-11-01), Kirlin
patent: 5170011 (1992-12-01), Martucci
Colby Douglas
Neuhauser Ryan
Bernat Louis
Bryant III James E.
Titeflex Corporation
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