Trench safety device

Details Trench safety device Trench safety device

1991-09-03

1992-07-14

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

405272, E02D 1700

Patent

active

051297639

ABSTRACT:
A rotatable cage for protecting a worker in a trench is disclosed. This cage is comprised of two walls which are substantially congruent with each other, at least three cross-members joining said walls, and a cover for the exterior surface of each of said walls. The cross-members and the walls define, in combination, at least three open spaces on the perimeter of the rotatable cage.

REFERENCES:
patent: 3016714 (1962-01-01), Cote
patent: 3818709 (1974-06-01), Gibson
patent: 3922866 (1975-12-01), Benning
patent: 4319791 (1982-03-01), Gibson

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