Hydraulic and earth engineering – Marine structure or fabrication thereof
Patent
1987-04-20
1988-09-06
Taylor, Dennis L.
Hydraulic and earth engineering
Marine structure or fabrication thereof
30 92, 30103, 83191, 166 55, 166 557, 405226, 405227, E02D 904
Patent
active
047688998
ABSTRACT:
A device and method for severing the piles, grout and structural sleeves of vertical marine structures, from the inside of the structural member or the outside of the structural member. The device will sever the pile, grout or sleeve without jamming even though the weight of the marine structure is bearing down on the pile, grout or sleeve. The device is first lowered into the pile at the desired elevation and further locked onto the wall of the pile. Once the device is locked onto the pile, the cutter is lowered and proceeds to cut into the pile, grout and sleeve. When a sufficient section of the pile, grout or sleeve has been cut, spacers with barbs are forced into the slot formed by the cutter blade and are held in place by the barbs. After the spacers are in place, the remainder of the pile is severed with the cutter blade and a continuity check is made of the pile. An electric probe is placed on the lower section of the pile and if the pile is completely severed, a readout should indicate an open electric circuit. If any portion of the pile is still uncut, the readout should indicate a closed electric circuit. When a closed circuit is indicated, the cutter will rotate and cut the pile where it is uncut.
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patent: 4619556 (1986-10-01), Parra
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