Hydraulic and earth engineering – Foundation – Columnar structure
Patent
1983-05-23
1984-09-18
Purser, Ernest R.
Hydraulic and earth engineering
Foundation
Columnar structure
173132, E02D 552
Patent
active
044720858
ABSTRACT:
A cap formed of cast steel is permanently attached to the top end of a tubular metal caisson to facilitate the handling of the caisson and its installation with a sonic or vibratory driver/extractor mechanism. The cap has an annular base formed with a relatively large central opening. A plurality of bolt-receiving holes are formed in the base and are spaced in an arrangement for subsequent mounting of a superstructure on the caisson. A pair of diametrically spaced clamping plates is formed integrally with the base for cooperative engagement with the vibratory mechanism. A pair of diametrically spaced lifting lugs are mounted on the base between the clamping plates to facilitate the handling of the cap and caisson. The clamping plates each have a straight chordlike center section and may have a pair of end sections. The cap has a size slightly larger than the size of the caisson top end and is secured thereon by one or more welds.
REFERENCES:
patent: 758102 (1904-04-01), Powers
patent: 1062438 (1913-05-01), Clark
patent: 2969995 (1961-01-01), Boughton
patent: 3324894 (1967-06-01), Deal
patent: 3848421 (1974-11-01), O'Brien
DelSignore Mark J.
Purser Ernest R.
The Union Metal Manufacturing Co.
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