Tool driving or impacting – Including means to vibrationally isolate a drive means from...
Patent
1991-05-16
1993-11-23
Phan, Hien H.
Tool driving or impacting
Including means to vibrationally isolate a drive means from...
173 49, 175 56, 405232, E02D 718, E21B 724
Patent
active
052635449
ABSTRACT:
The specification discloses an apparatus for driving and/or pulling a pile which basically comprises vibratory device, a pulling device, a plurality of shock absorbing members, and shock connecting apparatus. The vibratory device generates a vibratory force and applies this force to the pile. The pulling device applies a tension load to a carrying member. The shock connecting apparatus is operatively connected to the carrying member, the shock absorbing members, and the vibratory device. The shock connecting apparatus so selectively connects each of the plurality of shock absorbing members between the vibratory device and the pulling device that the total shock absorbing capacity of the apparatus is incrementally increased as the tension load applied to the carrying member increases.
REFERENCES:
patent: 3004389 (1961-11-01), Muller
patent: 3460637 (1969-08-01), Schulin
patent: 3828864 (1974-08-01), Haverkamp et al.
patent: 3865501 (1975-02-01), Kniep
patent: 4274616 (1981-06-01), Boguth
patent: 4645017 (1987-02-01), Bodine
patent: 5117925 (1992-06-01), White
American Piledriving Equipment, Inc.
Phan Hien H.
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