The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2000
Filed:
Apr. 18, 1999
Applicant:
Inventor:
R Robert Goughnour, Leesburg, VA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02B / ; E02D / ;
U.S. Cl.
CPC ...
405 43 ; 521695 ;
Abstract
A prefabricated vertical earth drain which is provided with an elongated corrugated flexible plastic core sheet with vertical and horizontal dimensions of extension and horizontal corrugations which provide continuous longitudinally extending drain channels that extend in the vertical direction. These drain channels are defined with curved corrugation bends and a series of longitudinally spaced relief protrusions are provided in the channels. In use, the entire structure is surrounded with a filter fabric. The relief protrusions assist in preventing the protrusion of filter fabric into the drain channels.