James S Autry

US Patent:

54802547, Jan 2, 1996

Filed:

Nov 19, 1993

Appl. No.:

8/154527

Inventors:

James L. Autry - Fayetteville NC
Jimmy N. Whitley - Knightdale NC

International Classification:

E01C 1122

US Classification:

404 2

Abstract:

This invention is a box filter used in conjunction with newly constructed storm drains and the like to prevent undesirable amounts of sediment and other debris carrier by storm runoff from entering the storm drain. Upper and lower frames are provided with expanded metal interior and exterior sidewalls extending therebetween. The box-like structure has an open bottom, reinforcing plates adjacent the connection of a lift handle and corner braces to add rigidity to the system. An aggregate such as crushed stone is placed between the interior walls and exterior walls of the filter and act as a filter media for the sediment of the debris. This filter is reusable without loss of its filtering qualities due to its rugged construction and back flushable filter medium.