Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Reexamination Certificate
2006-06-06
2006-06-06
Lagman, Frederick L. (Department: 3673)
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
C405S272000
Reexamination Certificate
active
07056068
ABSTRACT:
A shoring system for trenches comprising large shoring panels and strutting assemblies is disclosed. Shoring panels are arranged in pairs against either wall of the trench and held vertically by adjacent strutting assemblies spaced apart along the trench. Each strutting assembly has at least one horizontal strut fastened in between a pair of opposite vertical struts. Each said vertical strut has laterally opposite guide channels to receive cooperatively the guide edge of the shoring panel that slides vertically within. Each guide channel of said vertical strut is provided with a locking bar to interlock the guide edge of the shoring panel so that pairs of shoring panels are linked successively on either side of a strutting assembly to create a shoring wall on either side of the entire trench. Said vertical strut is further provided with pairs of rollers to ease sliding of shoring panels. In one variation, the strutting assembly comprises at least one hydraulic cylinder to push apart opposite vertical struts forcing shoring panels to exert a pressure load against either wall of the trench.
REFERENCES:
patent: 3910054 (1975-10-01), Krings
patent: 3937026 (1976-02-01), Krings
patent: 4054033 (1977-10-01), Pillosio
patent: 4145891 (1979-03-01), Krings
patent: 4657442 (1987-04-01), Krings
patent: 5310289 (1994-05-01), Hess
patent: 5931607 (1999-08-01), Hess
patent: 6164874 (2000-12-01), May
LandOfFree
Trench shoring system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trench shoring system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trench shoring system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3651563