Patent ID: 8336578

Claim:
A quick release gas pressure regulator, comprising: a) a main body divided into a primary pressure zone at a central portion thereof, a secondary pressure zone at a front portion thereof, and a gas bottle connection zone at a rear portion thereof, the primary pressure zone and the secondary pressure zone being separated by a radial flange, the radial flange having a pressure-regulating passage in an axial direction, a gas supply passage being interposed between the primary pressure zone and the gas bottle connection zone, a gas outlet being positioned in a wall of the secondary pressure zone; b) a pressure-regulating device positioned within the front portion of the main body; c) a gas chamber sealing plug positioned at a front portion of the primary pressure zone of the main body in proximity to the gas supply passage of the main body, a first pressure chamber being defined by the gas chamber sealing plug and the radial flange; and d) a pressure relief unit positioned within a middle portion of the main body and having: i) a gas chamber plug positioned at a rear portion of the primary pressure zone of the main body, the gas bottle connection zone of the main body being provided with a connection thread in connection with a gas bottle connector, a gas supply chamber being defined by the gas chamber plug and the gas bottle connector, the gas chamber plug having an external axial pressure relief passage; ii) a positioning ring seat fixed by the gas chamber plug at a central portion of the primary pressure zone of the main body and having an internal axial pressure relief passage communicating with the external axial pressure relief passage, a pressure relief O-ring being positioned at a joint between the internal axial pressure relief passage and the external axial pressure relief passage; iii) a gas supply back-up post received within the external axial pressure relief passage and the internal axial pressure relief passage, the gas supply back-up post being divided into a sealing portion and with a pressure relief portion by the pressure relief O-ring; iv) a pushing member radially passing through the main body and the positioning ring seat, and having a pushing inclination facing the internal end of the gas supply back-up post, a return spring being positioned at an internal end portion of the pushing member; and v) an operating lever pivotally connected to the main body by a pivot, the operating lever having a cam portion facing the external end of the pushing member.