US 5,460,416 A · Perforated fiber reinforced pipe and couplings for articulating movement

Abstract

A pipe for extracting gases from a landfill well comprises a series longitudinal windings of fiber reinforced resin windings wound for providing longitudinal strength. The longitudinal windings are wound in directions opposite to and intersecting with each other, forming a interlocking network of windings and openings. A number of reinforcing ribs extend circumferentially around the surface of the right and left hand windings at equidistant positions along the surface and at each end of the pipe for providing radial stiffness. The reinforcing rib at each end of the pipe comprises a groove extending circumferentially around the outside surface of the rib for facilitating interconnection with adjacent pipes. A helical winding is wound around the surface of longitudinal windings between adjacent reinforcing ribs for providing longitudinal strength and radial stiffness to the pipe. The pipe comprises a plurality of perforations in its surface. Adjacent pipes are joined together by an articulating coupling comprising a hollow cylindrical sleeve having an circular opening at each end and a groove extending circumferentially around the inside surface of each opening. A key is used for retaining each pipe within the coupling by inserting the pipe end into the coupling, aligning the groove in the pipe end with the groove in the respective coupling opening, and inserting the key to partially fill the space defined by the two grooves.

Claims29

Dependent claims

A pipe used for extracting gases from a landfill well, the pipe comprising:

at least one series of longitudinal windings of a fiber reinforced resin extending in a helical pattern forming a hollow cylinder;
and
a number of periodically spaced apart reinforcing ribs of fiber reinforced resin extending circumferentially around the outside surface of the longitudinal windings, wherein the reinforcing ribs are independent from one another, and wherein each rib has a thickness greater than a wall portion of the pipe formed from the series of longitudinal windings.

A pipe used for extracting gases from landfill wells, the pipe comprising:

a series of right hand longitudinal windings of fiber reinforced resin wound longitudinally in a helical pattern having a longitudinal angle of wrap in the range of from about 5 to 55 degrees from the axis of the pipe;
a series of left hand longitudinal windings of fiber reinforced resin wound longitudinally in a helical pattern having a longitudinal angle of wrap in the range of from about 5 to 55 degrees from the axis of the pipe, the left hand windings being wound in a direction opposite to and intersecting with the right hand windings;
a number of reinforcing ribs of fiber reinforced resin extending circumferentially around the surface of the right and left hand windings, the reinforcing ribs being placed at equidistant locations along the outside surface of the right and left hand windings;
a helical winding of fibre reinforced resin wound around the outside surface of the right and left hand windings between adjacent reinforcing ribs, the helical winding being wound in a helical pattern having a helical angle of wrap in the range of from about 55 to 85 degrees from the axis of the pipe;
and
a plurality of perforations through the surface of the right and left hand windings located between adjacent reinforcing ribs and the helical winding.

3 more elements

A pipe system for extracting gases from a landfill well, the pipe system comprising:

a number of pipes, each pipe comprising;
a series of right hand longitudinal windings of fiber reinforced resin wound longitudinally in a right hand helical pattern for providing longitudinal strength;
a series of left hand longitudinal windings of fiber reinforced resin wound longitudinally in a left hand helical pattern opposite to and intersecting with the right hand windings, the right and left hand windings forming a hollow cylinder having an interlocking configuration of windings;
a number of reinforcing ribs of fiber reinforced rein each extending circumferentially around the outside surface of the right and left hand windings at regular intervals and at each end of the pipe;
a groove extending circumferentially around an outside surface of each rib positioned at the ends of the pipe;
a helical winding of fiber reinforced resin wound in a helical pattern about the outside surface of the right and left hand windings between and connecting with adjacent reinforcing ribs;
and
a plurality of perforations in the surface of the right and left hand windings between adjacent reinforcing ribs and the helical winding;
a number of couplings for joining together adjacent pipes in a manner permitting the articulating movement of each pipe within the coupling, each coupling comprising;
a hollow cylindrical sleeve of sufficient length and diameter to accommodate the ends of two adjacent pipes, the sleeve having a first opening and a second opening opposite to the first opening;
and
a groove extending circumferentially along an inside surface of the first and second opening.

9 more elements

Dependencies are inferred from the claim text.

Perforated fiber reinforced pipe and couplings for articulating movement

Life of this patent

Perforated fiber reinforced pipe and couplings for articulating movement

Life of this patent

Abstract

Claims29