Rotational drive apparatus for screw pilings

Details Rotational drive apparatus for screw pilings Rotational drive apparatus for screw pilings

2008-04-01

2008-04-01

Singh, Sunil (Department: 3673)

Hydraulic and earth engineering

Foundation

Columnar structure

C405S252100, C173S215000, C173S216000

Reexamination Certificate

active

11119698

ABSTRACT:
A rotational drive apparatus for screw pilings is described. The apparatus comprises a housing having a cylindrical pipe coupling adapted to receive a shaft of a screw piling therethrough. A detachable connecting element secures the coupling to the shaft at different positions along the shaft. A rotational drive is provided within the housing for imparting rotation to the coupling. An elongated rod is secured to the housing and is held by a user person whereby to immobilize the housing wherein to permit the rotational drive to transmit a drive force to the coupling to rotate the shaft of a screw piling.

REFERENCES:
patent: 3367426 (1968-02-01), Laverty
patent: 4601348 (1986-07-01), Cox
patent: 5066168 (1991-11-01), Holdeman
patent: 5350027 (1994-09-01), Mauch et al.
patent: 5363925 (1994-11-01), Gallagher
patent: 5598893 (1997-02-01), Carlson
patent: 5707180 (1998-01-01), Vickars et al.
patent: 63223217 (1988-09-01), None
patent: 63223218 (1988-09-01), None

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