Described are an apparatus and method for driving piles prior to lifting and stabilizing foundations that have subsided in unstable ground. A press head, comprising two non-slip arms actuated by a safety lever, is connected to an angle cleat-type foundation piece secured to the foundation by a pair of hydraulic rams in order to drive the piles into the ground as far as the bedrock when the rams contract. The apparatus includes a safety system actuated by the lever for controlling the arms. In order to level the building, other hydraulic rams are installed on each driven pile, all connected in series in order that they may be actuated simultaneously in order to lift the building. When the foundations have been adequately raised and levelled, each pile and the corresponding angle cleat-type foundation piece, both made of steel, are welded in order to stabilize the foundations.

An injection port for a spray gun includes a first end and a second end disposed opposite the first end along a longitudinal axis. The injection port also includes an interior passage extending between the first end and the second end along the longitudinal axis, and a plurality of blind bores disposed at the first end, each blind bore extending perpendicular to the longitudinal axis.

A lifting system utilizing a lifting apparatus for lifting a floor (e.g., a concrete slab) using the lifting apparatus to support a floor from under the floor during lifting. The lifting apparatus may have a first portion (e.g., an extension member and saddle) installed under a slab. Piers are driven into the ground through the first portion of the lifting apparatus. Thereafter, a second portion of the lifting apparatus is operatively coupled to the to the first portion and the uppermost pier. A lifting device (e.g., hydraulic ram) is operatively coupled to the lifting apparatus and/or the pier and is used to lift the slab.

The present invention relates to a pier support system that provides for efficient and effective stabilization and lifting of foundations and structures. The present invention relates to a one-piece or one-part pier support system that provides for efficient and effective stabilization and lifting of foundations and structures. The present invention relates to methods of using one-piece of one-part pier support systems that are efficient and effective in stabilizing and lifting foundations and structures.

A device for stabilizing a metal pier installed in the ground. The device includes a device to provide lateral support to the pier and a shaft configured so that a force imposed, parallel to an axis of the pier, on the device is not imposed on the pier. A method of stabilizing a pier installed in ground to support a structure. The method includes determining the location of an unstable soil zone of the ground and a stable soil zone of the ground. The method also includes placing a stabilizing plate in the unstable soil zone to provide lateral support to the pier. A device configured to lift a foundation slab above the ground. The device includes a lifting bolt and apparatus that restricts lateral deflection of the pier when a torque is applied to the lifting bolt to raise the slab. A method of stabilizing soil around a pier.

Methods of lifting structures such as a wall of a building. A fluid that is under pressure is injected beneath the base of the wall. The pressure of the injected fluid acts against the base of the wall to lift the wall vertically. In some embodiments, a supplemental lifting force mechanism can be attached to the wall to apply a supplemental lifting force to the wall that acts together with the lifting force applied by the injected fluid. The supplemental lifting force lightens the wall, reducing the amount of lifting force required to be applied to the wall by the injected fluid.

A technician positions a form with a threaded aperture on a pier. Concrete is poured around the form to create a slab foundation. A fixture is then placed on the slab foundation, the fixture having a polygonal anti-rotation member that inserts into a polygonal upper end of the form. The fixture has an upward extending fixture stop member. A threaded rod with a tool adapter on its upper end is screwed into the threaded aperture. The adapter has an adapter stop member extending laterally relative to the fixture stop member. A power tool rotates the adapter to lift the slab foundation until the adapter stop member swings into contact with the fixture stop member. The technician then removes the adapter, places the adapter stop member adjacent an opposite side of the fixture stop member, then again rotates the adapter.

A marine structure including a floating deck attached to a damper configured to control the vertical movement of the deck. The damper allows vertical motion of the floating deck in response to gradual changes in water level such as tidal changes, but resists bouncing of the deck in response to shorter term fluctuations in water level such as boat wakes or wind chop.

A swivel connector for a spray gun includes a first portion, the first portion including a first interior passage that extends entirely through the first portion along a longitudinal axis and a second a second interior passage that extends along a first axis perpendicular to the longitudinal axis. The swivel connector also includes a second portion coupled to the first portion, the second portion including a third interior passage that extends entirely through the second portion along the longitudinal axis, and a fourth interior passage that extends along a second axis perpendicular to the longitudinal axis. The swivel connector also includes a connector pin coupled to both the first portion and the second portion, wherein the connector pin includes a fifth interior passage that extends along the longitudinal axis.

Systems and methods are provided for foundation lifting and retention using fluid drive actuators are described. A foundation lift system of embodiments may include expendable fluid drive actuators operable to provide lifting forces with respect to a foundation structure using a fluid pressure (e.g., hydraulic and/or pneumatic) drive mechanism and utilize one or more locking mechanisms and/or fluids operable to persistently lock the lift assemblies in an extended state to retain the foundation structure in its lifted position. Curable fluids injected into expendable fluid drive actuators of embodiments may be configured to solidify within the drive mechanism and impede movement of the lift assemblies subsequent to a foundation lifting operation. Additionally, one or more locking mechanisms may be configured to engagedly retain the expendable fluid drive actuator in an extended state subsequent to the foundation lifting operation.