Shoring device

Details Shoring device Shoring device

1987-05-14

1988-11-29

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

254 93R, E02D 1704

Patent

active

047877812

ABSTRACT:
There is disclosed a device for shoring the side walls of a trench or the like which includes a pair of elongate rails and a pair of parallel, hydraulically extendible and contractible actuators connected at opposite ends to the rails for lowering with the rails into and out of positions between the walls of the trench, and adapted, when extended, to hold the rails tightly against the walls.

REFERENCES:
patent: 891897 (1908-06-01), Astrom
patent: 2372196 (1945-03-01), Grime
patent: 2408181 (1946-09-01), Simonton
patent: 3321182 (1967-05-01), Elenburg
patent: 3335573 (1967-07-01), Ward
patent: 3347049 (1967-10-01), Faltersack et al.
patent: 3851856 (1974-12-01), Berg
patent: 3905279 (1975-09-01), Yadon
patent: 4247082 (1981-01-01), Sjolund
patent: 4449734 (1984-05-01), Cory

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