Moving steel form system

Details Moving steel form system Moving steel form system

1992-03-31

1994-02-08

Reese, Randolph A.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405145, 405293, 405291, 405288, E21D 900

Patent

active

052844048

ABSTRACT:
A travelling steel form system includes a three-dimentional framework mechanism with multiple faces crossing and coupling with one another. A set of form panels are fixed to the outer side of the framework mechanism on more than two faces thereof, and are capable of connecting to one another to form a predetermined shape and disconnect from one another to change the shape following expanding and retracting movement of the framework mechanism. A driving device is vertically or horizontally retractably mounted on the front end and or rear end of the framework mechanism for driving the latter to perform movements of expanding the outer diameter or reducing the outer diameter. The system is particularly suited for use in concrete placing work in civil engineering constructions.

REFERENCES:
patent: 3417538 (1968-12-01), Dean
patent: 3550344 (1970-12-01), Maier et al.
patent: 3812680 (1974-05-01), Walbrohl
patent: 3970200 (1976-07-01), Goetjen
patent: 4043137 (1977-08-01), Jutte et al.
patent: 4050255 (1977-09-01), Ahlgren
patent: 4826639 (1989-05-01), Vidal et al.

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