(54) STORM SEWER FILTERING APPARATUS
(76) Inventor: J. Mark Forse, 5401 Progress Blvd., Bethel Park, PA (US) 15102
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
(21) Appl. No.: 09/099,787
(22) Filed: Jun. 18, 1998
(51) Int. C I. E03F 5/06
(52) U.S. CI 210/163; 210/164; 210/232;
210/459; 210/448; 210/489; 404/4; 383/22;
383/119
(58) Field of Search 210/163-166,
210/232, 497.2, 314, 448, 315, 452, 337, 483, 455, 485, 489, 459; 404/2, 4; 383/12, 17, 20, 22, 119, 6
5,562,819 10/1996 Turner, Jr. et al 210/85
5,575,925 * 11/1996 Logue, Jr. .
5,587,072 12/1996 Regan 210/232
5,595,457 1/1997 Stacks 405/87
5,607,237 * 3/1997 LaFleur .
5.632.888 5/1997 Chinn et al 210/163
5.632.889 5/1997 Tharp 210/165
5,643,445 7/1997 Billias et al 210/162
5,679,246 10/1997 Wilcox et al 210/165
5,699,564 * 12/1997 Heh .
* cited by examiner
Primary Examiner—David A. Simmons
Assistant Examiner—Fred Prince
(74) Attorney, Agent, or Firm—-John Gugliotta
(57) ABSTRACT
A storm sewer filtering apparatus is provided having a filter bag forming a rectangularly shaped substrate retaining volume. A flat bottom surface remains at the bottom of the filter bag and forms the majority of the filtering surface. Geotextile fabric forms a filtering media and incorporates a plurality of woven webbing reinforcement straps to provide additional strength to the finished filter bag. The woven webbing is affixed to the geotextile filtering media by conventional stitching methods, and extends beyond the edge of the respective side wall for attachment to a drain grate. Rigidly affixed to each terminal end of the attachment strap is a retaining block that is linearly elongated and made of a rigid material, such as wood, metal, or hard plastic.
9 Claims, 3 Drawing Sheets
