Back to results
US 5,848,618 AGranted
Relating to composite tubing
OwnerJohn Derek Guestinventor
Life of this patent
Estimating the term…
Abstract
The disclosure relates to a composite tubing comprising a convoluted tubular core having coextruded inner and outer plastics layers providing a composite tube having a smooth inner bore and a smooth outer surface.
Claims3
A composite tubing comprising a convoluted tubular core formed from a flexible material which adopts a permanent set when deformed, said core having circumferential grooves alternately on the inner and outer sides of said core and having coextruded inner and outer plastics layers filling said grooves on said inner and outer sides of said core and providing a composite tube having a smooth inner bore and a smooth outer surface.
Dependencies are inferred from the claim text.