Trench shield directly ridable and movable on a constructing pip

Details Trench shield directly ridable and movable on a constructing pip Trench shield directly ridable and movable on a constructing pip

1999-04-14

2000-12-26

Lillis, Eileen D.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

405272, 405282, 405157, E02D 302, E02D 500

Patent

active

061648752

ABSTRACT:
A trench shield includes a pair of shielding panels for protecting opposite side walls of a trench excavation, two side frames are provided for restively adjustably securing the two shielding panels on the two side frames, and have a plurality of brace members spaced between the two side frames for retaining the two side frames and the two shielding panels, and two rolling devices respectively are mounted on a front bottom portion and a rear bottom portion of the trench shield for carrying the trench shield to be ridable and movable on a pipe under construction in the trench excavation. Upon rolling of the rolling devices on the constructing pipe, the trench shield will be conveniently moved on the pipe without any obstruction.

REFERENCES:
patent: 2738745 (1956-03-01), Harpold
patent: 3664141 (1972-05-01), Wyatt
patent: 3788086 (1974-01-01), West, Jr.
patent: 3820345 (1974-06-01), Brecht
patent: 3831388 (1974-08-01), Wells
patent: 3936961 (1976-02-01), Gahler
patent: 4044565 (1977-08-01), Stuckman
patent: 4059965 (1977-11-01), Stuckman
patent: 5306103 (1994-04-01), Spencer
patent: 5336023 (1994-08-01), Burdine
patent: 5865567 (1999-02-01), Wilkinson

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