Patent ID: 8500368

Claim:
An underpinning pile assembly for supporting a structure upon a ground comprising: a plurality of steel pipes each having an interior passageway, said plurality of steel pipes extending in end-to-end relationship in generally vertical alignment, one of said plurality of steel pipes being a lowermost pipe, said lowermost pipe having an interior wall; at least one concrete pile segment positioned above the plurality of steel pipes, the concrete pile segment having an interior passageway; a cable extending through said interior passageway of the plurality of steel pipes and through said interior passageway of the concrete pile segment, said cable having an end affixed within said interior passageway of said lowermost pipe; and a locking assembly connected to said cable, said locking assembly affixed within one of said plurality of steel pipes, said locking assembly comprising: a collar having an outer surface affixed to said interior wall of said lowermost pipe, said cable being affixed within an interior of said collar; and a pair of wedges positioned in interference fit relation between said cable and a wall of said interior of said collar.