Hydraulic and earth engineering – Miscellaneous
Patent
1992-01-03
1993-05-11
Taylor, Dennis L.
Hydraulic and earth engineering
Miscellaneous
137596, 137884, 405282, E02D 1704
Patent
active
052096068
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.
REFERENCES:
patent: B514687 (1976-01-01), Janvrin
patent: 1001779 (1911-08-01), Slack
patent: 1148568 (1915-08-01), Bees
patent: 3234964 (1966-02-01), Tinsley et al.
patent: 3335573 (1967-08-01), Ward
patent: 3715889 (1973-02-01), Bixler et al.
patent: 4281683 (1981-08-01), Hetherington et al.
patent: 4570674 (1986-02-01), Kaye
patent: 4582089 (1986-04-01), Nimberger
patent: 4848393 (1989-07-01), West
Speed Shore Corp.
Taylor Dennis L.
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