Pipes and tubular conduits – Flexible – Corrugated
Patent
1981-11-06
1985-06-18
Shepperd, John W.
Pipes and tubular conduits
Flexible
Corrugated
405 43, 405 49, 405 45, F16L 1111, E02B 1100
Patent
active
045236135
ABSTRACT:
The conduit includes a top wall (A) and a base (B). The top wall A has an apex area (10) which is connected with a first corrugated side wall (12) and a second corrugated side wall (32). The side walls having alternating peaks (22, 42) and valleys (24, 44). The peaks have apex ends (26, 46) which are disposed closely adjacent each other at the apex area to define a hinge region therebetween. Disposed along the apex area and on the side wall peaks are a plurality of outward projecting dimples (70, 72, 74) which are severable by a tangentially disposed knife blade to form a plurality of apertures (50, 52, 54). The base B is a flexible sheet of plastic mesh material.
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Child, Jr. James L.
Fouss James L.
Parker John J.
Sting Donald W.
Hancor, Inc.
Shepperd John W.
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