Patent ID: 8590521

Claim:
An air pistol comprising: a trigger; a gas cartridge; a hollow connector disposed in a first chamber and releasably secured to the gas cartridge, the connector comprising an axial channel; a pressure stabilization assembly comprising a pressure stabilization chamber disposed between the connector and the trigger, a spring biased cup disposed in the first chamber, a sealing member disposed on a bottom of the cup, and a plurality of outlets disposed between the sealing member and the connector; and a relief valve disposed in a second chamber spaced from the first chamber and comprising a passageway communicating the pressure stabilization chamber with one end of the second chamber, a spring biased plunger disposed in the second chamber adjacent to the passageway, a blocking member fastened in the plunger and proximate to one end of the second chamber, a pressure adjustment screw disposed at the other end of the second chamber, and an exit tunnel disposed through the pressure adjustment screw to communicate with the second chamber; wherein pressurized air in the gas cartridge having a pressure no more than a predetermined maximum pressure of the gas cartridge flows to the pressure stabilization chamber via the channel of the connector, the outlets, and the first chamber; and wherein pressurized air in the pressure stabilization chamber having a pressure greater than a predetermined maximum pressure of the pressure stabilization chamber flows into the second chamber by pushing both the plunger and the blocking member away from the passageway so that the pressurized air further flows through an annular gap between the plunger and an inner surface of the second chamber, and the exit tunnel for exit.