Elastomer-lined metal pipe
AssigneeVictaulic Company of America
InventorsRobert Rung, Douglas R. Dole
Life of this patent
Estimating the term…
Abstract
A lined pipe has a continuous impervious coating of an elastomer extending along the inner periphery of the pipe and along the radial end surfaces thereof, and a portion thereof extending over the outer surface of the pipe which progressively decreases in thickness to zero thickness at a position underlying a sealing lip of an elastomeric gasket to be associated with the lined metal pipe.
Claims6
Lined metal pipe of a type having a continuous impervious coating of an elastomeric material on an inner periphery thereof and on radial end surface thereof, further comprising, a terminal portion of said continuous coating contiguous with said coating on said radial end surface and directly contacting and extending axially of an outer periphery of said pipe, further comprising said terminal portion progressively decreasing in thickness from said radial end surface of said pipe to the axial termination of said portion at a position spaced axially from said radial end surface, in which said terminal portion is in the form of an annulus having a radially outer surface providing a frustum of a cone.
Dependencies are inferred from the claim text.