Slipform apparatus for vertical bores

Details Slipform apparatus for vertical bores Slipform apparatus for vertical bores

1978-06-29

1980-06-03

Anderson, Philip

Plastic article or earthenware shaping or treating: apparatus

Utilizing subterranean feature as shaping means

264 33, 405133, 405146, 425 64, E21D 500

Patent

active

042059496

ABSTRACT:
A slipform apparatus is described for forming a continuous upright monolithic lining within a preformed upright shaft. The slipform is provided in three independently movable sections that may be lowered into the shaft. Wet concrete is delivered to the sections and dispensed outwardly of the sections to form the lining. The formed sections hold the wet concrete against the walls of the shaft and progressively form a cylindrical upright bore within the shaft. As concrete is delivered to the slipform, the individual sections are moved in an "inchworm" effect in conjunction with an expansion mechanism to automatically lift itself upwardly within the shaft as the lining is being formed. A steering mechanism is provided to enable selective angular movement of the slipform in a nonvertical plane.

REFERENCES:
patent: 2520199 (1950-08-01), Butcher
patent: 3032852 (1962-05-01), Hanson
patent: 3049783 (1962-08-01), Hanson
patent: 3206824 (1965-09-01), Cerutti
patent: 3350889 (1967-11-01), Sturm
patent: 3377669 (1968-04-01), Burgess
patent: 3613379 (1971-10-01), Jacobs
patent: 3613384 (1971-10-01), Jacobs
patent: 3792942 (1974-02-01), Cole
patent: 3877855 (1975-04-01), Hanson
patent: 4031708 (1977-06-01), Hanson
patent: 4055958 (1977-11-01), Hanson
patent: 4067675 (1978-01-01), Hanson

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