Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1994-07-08
1996-03-19
Ricci, John A.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
92 18, 2483541, E02D 1704
Patent
active
054998905
ABSTRACT:
There is disclosed a shoring device for holding shoring boards against the walls of a trench. The shoring device is equipped with a locking mechanism to lock the device in an extended position in order to prevent the trench walls from collapsing. The shoring device includes a cylinder, a piston, and a piston rod with a rectangular cross-sectional geometry. The cylinder has an inlet for introducing a hydraulic fluid which upon entry into the cylinder causes the piston to slide within the cylinder, and the elongated piston rod to extend radially outwardly from the cylinder. In this extended position, the shoring device holds the shoring boards tightly against the walls of the trench. Upon retraction of the piston rod back into the cylinder, a cylinder end cap acts as a scraper, removing dirt and other particles from the surface of the rectangular piston rod.
REFERENCES:
patent: 891897 (1908-06-01), Astrom
patent: 2372196 (1945-03-01), Grime
patent: 2408181 (1946-09-01), Simonton
patent: 2922283 (1960-01-01), Porter
patent: 3251278 (1966-05-01), Royster
patent: 3321182 (1967-05-01), Elenburg
patent: 3335573 (1967-08-01), Ward
patent: 3347049 (1967-10-01), Faltersack et al.
patent: 3470699 (1969-10-01), Cox
patent: 3851856 (1974-12-01), Berg
patent: 3905279 (1975-09-01), Yadon
patent: 4130205 (1978-12-01), Luthi
patent: 4247082 (1981-01-01), Sjolung
patent: 4449734 (1984-05-01), Cory
patent: 4787781 (1988-11-01), Bradberry
Americ Corporation
Ricci John A.
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