Corrugated drainage tube
作者： Donald R. Justice
DOI:
关键词:
摘要: A drainage tube includes alternating annular peaks and valleys on an exterior wall of the tube. An interior is smooth continuous along its length. The combined form elongated In alternating, selected are arranged a plurality slots extending transverse to longitudinal axis so that water can drain into through slots. These openings extend space addition, each recessed groove. At base these grooves located circular having smaller diameter tube, increasing in towards Corresponding additional spaced from wall.
lens.org 参考文章(15)
M Sixt, Corrugated drainage tube with restraining screen ,(1972)
Helmut P Fochler, Composite tubing structure ,(1964)
Ernest J. Maroschak, Corrugated plastic drainage pipe with integral coupler ,(1973)
Frank T. Beane, Drain tile and pile fabric filter sleeve ,(1979)
Marty E Sixt, Corrugated drainage tubes and fittings ,(1970)
Shiro Kanao, Underground drain pipe ,(1985)
Henry G Henrickson, Pipe coupler device ,(1966)
Helmut P Fochler, Corrugated tubing structure ,(1964)
Donald W. Sting, James L. Fouss, James L. Child, John J. Parker, Multi-layered corrugated conduit with "black-eye" like apertures ,(1981)
Frank Thomas Beane, Land drain comprising a drainage conduit covered by a knitted fabric filter sleeve ,(1980)