Panel for supporting the walls of an excavation

Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention

Reexamination Certificate

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Details

C296S191000

Reexamination Certificate

active

07611308

ABSTRACT:
A panel for supporting the sidewalls of an excavation includes a plate, longitudinal members and vertical members. Each longitudinal member includes a first leg extending along the length, substantially parallel to and spaced laterally from the plate. The first leg of each longitudinal member being located adjacent and secured to the first leg of another member. A second leg, integral with the first leg, extends along the length, away from the first leg and toward the plate, the second leg being secured to the plate. Axially spaced vertical members are welded to the plate and to the longitudinal members.

REFERENCES:
patent: 841773 (1907-01-01), Fitzgerald
patent: 2188077 (1938-05-01), Dowd
patent: 2246623 (1939-02-01), Dorey
patent: 2260423 (1939-04-01), Washboume
patent: 3393521 (1966-11-01), Cammisa
patent: 3593528 (1971-07-01), Pavese
patent: 4054033 (1977-10-01), Pillosio
patent: 4114383 (1978-09-01), Nieber
patent: 4364203 (1982-12-01), Seaholm et al.
patent: 4993880 (1991-02-01), Collins
patent: 5232312 (1993-08-01), Jennings et al.
patent: 5290129 (1994-03-01), Rody et al.
patent: 5503504 (1996-04-01), Hess et al.
patent: 5527137 (1996-06-01), Spencer
patent: 5876153 (1999-03-01), Krings
patent: 5885033 (1999-03-01), Krings
patent: 6443665 (2002-09-01), Kundel, Sr.
patent: 0167991 (1985-07-01), None

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