Patent ID: 9016984
Filing Date: 2015-04-28
Classification: E02D

Abstract:
1. An underpinning pile assembly comprising: a first pile having an outer diameter and a longitudinal axis and an inner diameter, said first pile having an upper end; a second pile having a longitudinal axis, said longitudinal axis of said first pile being generally aligned with said longitudinal axis of said second pile, said second pile having a portion at a lower end thereof, said portion having an outer diameter that is less than an outer diameter of a remainder of said second pile above said portion, said portion being slidably received within said upper end of said first pile; and a ring interposed between said upper end of said first pile and a lower end of said remainder of said second pile, said ring having an outer diameter greater than said outer diameter of said first pile and greater than said outer diameter of said remainder of said second pile, said ring having an inner diameter less than said outer diameter of said first pile and less than said outer diameter of said remainder of said second pile, said ring having an inner diameter extending around said portion of said second pile and greater than said outer diameter of said portion.