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:
Oct. 22, 2002
Filed:
Apr. 08, 1999
Applicant:
Inventor:
Wavern L. Garner, Memphis, TN (US);
Assignee:
Rapac, Inc., Oakland, TN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02B 1/100 ;
U.S. Cl.
CPC ...
E02B 1/100 ;
Abstract
A loose fill lightweight plastic aggregate for a preassembled drainage line unit. The bead comprises a central portion, at least three legs extending from each of the top and bottom of said central portion, a plurality of channels each defined by adjacent ones of said legs, the width of said legs being greater than the width of said channels. A rib protrides laterally from each of the sides of the central portion. In the drainage unit, the beads maintain a substantial void space for flow of waste water and also provide maximum surface area for bacterial breakdown of sewage wastes.