Tubeless tire seating device

A tool for seating a tubeless tire on a rim using pressurized gas, the tool comprising:

• a cylindrical pressure vessel with an input port, said input port suitable for filling the cylindrical pressure vessel with pressurized gas;
• a nozzle pneumatically coupled to an outlet on a distal end of the cylindrical pressure vessel, said nozzle configured to blow gas between the rim and a tire bead of the tubeless tire;
• a gas valve configured to control a flow of gas from the outlet on the distal end of the cylindrical pressure vessel;
• a cylinder with a closed end included as part of the gas valve;
• a piston shaped to fit within the cylinder;
• a control reservoir within the cylinder between the closed end of the cylinder and the piston, a volume of the control reservoir dependent on a position of the piston in the cylinder;
• a release valve having an input and an outlet, the input of the release valve pneumatically coupled to the control reservoir and the outlet being pneumatically coupled to atmosphere outside the cylindrical pressure vessel;
• a release control configured to open said release valve;
• and
• a gap between the piston and walls of the cylinder of sufficient size for some of the pressurized gas to pass by the piston into the control reservoir while filling the cylindrical pressure vessel;
• wherein the gas valve is configured to open in response to actuation of the release control, allowing the pressurized gas to flow through the outlet on the distal end of the cylindrical pressure vessel and out the nozzle.