Shoring shield
AssigneeSpeed Shore Corp.
InventorMichael J. Plank
Life of this patent
Estimating the term…
Abstract
The present invention comprises a lightweight, portable, adjustable, reusable, preassembled, hydraulic expandable shoring shield for providing safety to personnel working in below-grade excavations. The Shoring shield comprises specially designed solid aluminum extruded sheeting sections forming the walls, each mounted with a top cap and lower skid, the walls are provided with a static expandable telescoping structural framework for holding the walls opposed, and also are provided with hydraulic cylinders for expanding the space enclosed between the walls, the framework and cylinders thus cooperate in combination with an armored manifold for routing fluid to the cylinders.
Claims8
Combination manifold and valve means for use with hydraulic excavation shoring devices comprising:
- (a) manifold means providing fluid communications passage means connecting a first inlet aperture, at least one cylinder supply aperture, and a relief aperture;
- (b) a first valve means connected to said inlet aperture;
- a second valve means connected to said relief aperture, and cylinder supply valve means connected to said supply aperture;
- (c) attachment means for attachment of said combination manifold means and valve means to said excavation shoring device;
- and,
- (d) armor means for protection of said combination manifold and valve means.
Dependencies are inferred from the claim text.