Patent ID: 6981425
Filing Date: 2006-01-03
Classification: E02D,G01L,G01N

Abstract:
1. A foil belt sensor, for use in a pile driving system to determine the driving force applied to the pile by the pile driving system, which foil belt sensor is capable of being wrapped and unwrapped about a pile comprising, a flexible metallic sheet surrounded on both sides and ends by insulating means; releasable connection means, connected to the insulation at each end of the sheet and extending longitudinally away from the ends, for releasable connection to one another for permitting the insulated metallic sheet to be assembled and disassembled around the pile, wherein, when the flexible metallic sheet is assembled around the pile, the flexible metallic sheet senses the change in voltage versus time that is generated in a pile by the sudden impact against the pile by the pile driving system.