US 6,981,342 B2
Screening laying box
Michael E. Lopata, Clinton, N.Y. (US)
Assigned to Power Line Constructors, Inc., ; and PLC Trenching Co., LLC., Clinton, N.Y. (US)
Filed on Nov. 24, 2003, as Appl. No. 10/722,658.
Prior Publication US 2005/0108903 A1, May 26, 2005
Int. Cl. E02F 5/22 (2006.01); F16L 1/02 (2006.01); H02G 9/00 (2006.01)
U.S. Cl. 37—142.5 16 Claims
OG exemplary drawing
 
1. A movable unit for screening excavated material to protectively cover or encase one or more utilities in an excavated trench, comprising:
a screening member mounted to the unit and located within the trench above the one or more utilities in the trench;
a plow for sweeping excavated material lying along at least one side of the trench onto said screening member, wherein said screening member has at least one screen with a plurality of openings with the excavated material passing through the openings of said at least one screen to deposit onto the utility or utilities installed in the trench as the unit moves.