1977-06-20
1978-03-28
Kannan, Philip C.
E02F 100
Patent
active
040807924
ABSTRACT:
A method of compacting granular material with continuously vibrating a hollow pipe. The vibrating pipe is lowered into the material to be compacted with a crane type apparatus, maintained in a lowered position for a period of time and then withdrawn from the material. The vibration imparted to the material is increased by a number of annular rings located along the outer surface of the vibrating pipe.
REFERENCES:
patent: 3145783 (1964-08-01), Sibley
patent: 3204414 (1965-09-01), Steurman
patent: 3282055 (1966-11-01), Landau
patent: 3344873 (1967-10-01), Baittinger
patent: 3344874 (1967-10-01), Bodine
patent: 3621659 (1971-11-01), Anderson et al.
Anderson Lowell M.
Simmons William D.
Friedman Stuart J.
Kannan Philip C.
Simmons William D.
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