| Patent Number |
Title Of Patent |
Date Issued |
| 7909541 |
Apparatus and method for improved grout containment in post-grouting applications |
March 22, 2011 |
| A structural assembly and a method are disclosed for an improved foundation element post-grouting technique incorporating a piston arrangement that consists of a barrel at the base of a pier or pile. Grout is pumped into the barrel via one or more conduits and the pressure from the g |
| 6942429 |
Post-stressed pile |
September 13, 2005 |
| A structural pile assembly includes a driven pile and pressurized grout contained beneath the pile so as to exert an upward force on the pile. An enclosure, such as a bladder or bellows, is filled with grout from a reservoir via a conduit which preferably extends axially along the length |
| 6892834 |
Piloted drill barrel and method of using same |
May 17, 2005 |
| A hard rock drill barrel has a barrel portion with a downhole hammer drill disposed therein at the barrel's periphery. A pilot portion, in substantial axial alignment with the barrel but having a smaller diameter, extends distally from the barrel for inserting into a pilot shaft of s |
| 6869255 |
Post-stressed pile |
March 22, 2005 |
| A structural pile assembly includes a driven pile and pressurized grout contained beneath the pile so as to exert an upward force on the pile. An enclosure, such as a bladder or bellows, is filled with grout from a reservoir via a conduit which preferably extends axially along the length |
| 6439322 |
Downhole hammer-type core barrel and method of using same |
August 27, 2002 |
| A core barrel has a plurality of pneumatic downhole hammer drills disposed around the perimeter of its working end for drilling piles in the ground for use in foundations, secant piles, and the like. The core barrel includes a slurry port and an air port at its top end for admitting a |
| 6409432 |
Downhole hammer-type core barrel and method of using same |
June 25, 2002 |
| A core barrel has a plurality of pneumatic downhole hammer drills disposed around the perimeter of its working end for drilling piles in the ground for use in foundations, secant piles, and the like. The core barrel includes a slurry port and an air port at its top end for admitting a |
| 6371698 |
Post stressed pier |
April 16, 2002 |
| A structural pier assembly includes a cementitious pier and pressurized grout contained beneath the pier in the shaft so as to exert an upward force on the pier. An enclosure, such as a bladder or bellows, is filled with grout from a reservoir via a conduit which preferably extends axial |
| 6189630 |
Downhole hammer-type core barrel |
February 20, 2001 |
| A core barrel has a plurality of pneumatic downhole hammer drills disposed around the perimeter of its working end for drilling piles in the ground for use in foundations, secant piles, and the like. The core barrel includes a slurry port and an air port at its top end for admitting a |
| 6048137 |
Drilled, cast-in-place shell pile and method of constructing same |
April 11, 2000 |
| A drilled, cast-in-place shell pile in the form of a cementacious pipe surrounding an earthen core. The pile is cast in an annular kerf drilled in the soil with a rotating hollow cylindrical core barrel. The earthen core within the annular kerf remains in place to form the core of the |
| 5823276 |
Diamond-tipped core barrel and method of using same |
October 20, 1998 |
| A relatively large diameter core barrel has a plurality of diamond cutting elements disposed around the circumference of its working end for drilling piles in very hard ground, such as metamorphic rocks and igneous rocks. Each cutting element is designed for quick and simple replacement |
| 5368083 |
Telescopic kelly bar apparatus and method |
November 29, 1994 |
| A telescopic kelly bar assembly for use in drilling large excavations. The kelly assembly consists of a lower outer bar section, at least one middle bar sections and an upper inner bar section. Each bar has its own driver that either rests on top of the next size larger bar or is engaged |
| 5366029 |
Large shaft over-reamer apparatus and method |
November 22, 1994 |
| A large shaft over-reamer apparatus and method using a driver means and a detachable reamer cutter means. The driver means may include a work platform for personnel to work on. The driver means is positioned in a drilled pilot hole for stability and vertical control. The top of the d |
| 5256005 |
Method and apparatus for placing cementitious materials in earth excavations |
October 26, 1993 |
| A method and apparatus for placing cementitious material into an excavation using a mobile unit having an extendable flexible hose mounted on a power driven hose reel. Cementitious material is pumped through the hose and out the hose end into an excavation as the flexible hose is reeled |
| 5026214 |
Apparatus for placing cementitious materials in earth excavations |
June 25, 1991 |
| A method and apparatus for placing cementitious material into an excavation using a mobile unit having an extendable flexible hose mounted on a power driven hose reel. Cementitious material is pumped through the hose and out the hose end into an excavation as the flexible hose is reeled |
