Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining
Patent
1980-05-07
1983-02-01
Corbin, David H.
Hydraulic and earth engineering
Underground passageway, e.g., tunnel
Lining
405146, E21D 1100
Patent
active
043712908
ABSTRACT:
A characteristic feature of the proposed shuttering is the fact that its adjacent sections are interconnected through means preventing them from being mutually inclined in a vertical plane; said means is interposed between said sections and is made as a bar and four links mounted in pairs on pivots at the bar ends, while ends of the links are connected, through ball-and-socket joints, to the respective sections; said bar being composed of at least two members swivelling with respect to each other about a common longitudinal axis.
REFERENCES:
patent: Re26132 (1967-01-01), Cerutti
patent: 3733835 (1973-05-01), Jacobs
Fishman Iosif D.
Ivanov Valentin A.
Khodosh Vladimir A.
Kirbatov Vladimir L.
Shenkman Mikhail Y.
Corbin David H.
Pistel Nancy J.
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