Air pressure controller

An air pressure controller configured to reduce air pressure from a source of compressed air, the air pressure controller comprising:

• an inlet fluidly connected to an inlet conduit and a high pressure chamber;
• an outlet fluidly connected to an outlet conduit and a low pressure chamber;
• an exhaust port fluidly connected to an exhaust conduit, and the exhaust conduit fluidly connected to the outlet conduit;
• an air pressure control adjustment device configured to adjust an outlet air pressure to a substantially steady outlet air pressure;
• a first piston engaged at a first end with a first compression element and engaged at a second end with a second piston, the first piston located within the high pressure chamber and extending into the low pressure chamber;
• the second piston engaged at a first end with a second compression element and engaged at second end with the first piston;
• the second compression element engaged at a first end with the second piston and engaged at a second end with an adjustment block;
• wherein the adjustment block includes a declined surface directly engaged with a correspondingly inclined surface of the air pressure control adjustment device, and wherein the adjustment block and the air pressure control adjustment device are configured such that generally lateral movement of the air pressure control adjustment device toward or away from the adjustment block moves the adjustment block in a generally vertical direction;
• and
• wherein the air pressure controller is configured to vent air through the exhaust port if an outlet conduit air pressure exceeds an exhaust air pressure.

A system for supporting a structure comprising:

• at least one source of compressed air;
• at least one strut fluidly engaged with the at least one source of compressed air;
• an air pressure controller fluidly engaged with and between the at least one source of compressed air and the at least one strut, the air pressure controller configured to reduce air pressure from the at least one source of compressed air provided to the at least one strut, the air pressure controller comprising:
• an inlet fluidly connected to an inlet conduit and a high pressure chamber, the inlet conduit fluidly engaged with the at least one source of compressed air;
• an outlet fluidly connected to an outlet conduit and a low pressure chamber, the outlet conduit fluidly engaged the at least one strut;
• an exhaust port fluidly connected to an exhaust conduit, and the exhaust conduit fluidly connected to the outlet conduit;
• an air pressure control adjustment device configured to adjust an outlet air pressure to a substantially steady outlet air pressure and provide an internal pressure of the at least one strut substantially equal to the substantially steady outlet air pressure;
• a first piston located within the high pressure chamber and extending into the low pressure chamber;
• a second piston located within the low pressure chamber;
• an adjustment block having a declined surface directly engaged with a correspondingly inclined surface of the air pressure control adjustment device, wherein the adjustment block is engaged to the second piston through a compression element, and wherein the adjustment block and the air pressure control adjustment device are configured such that generally lateral movement of the air pressure control adjustment device toward or away from the adjustment block moves the adjustment block in a generally vertical direction;
• and
• wherein the exhaust port is configured to release air if a force is exerted on the at least one strut that is greater than a predetermined force.