Patent ID: 8226377

Claim:
A sealing pump-up device comprising: a liquid container for storing a sealing agent, the liquid container also formed with an ejection port for ejecting the sealing agent; an injection unit configured with a liquid supply chamber that is in communication with the ejection port and is on the opposite side of the ejection port to the inside of the liquid container, with the ejection port interposed between the liquid supply chamber and the liquid container; a jig insertion hole configured in the injection unit and in communication with the outside of the injection unit and with the liquid supply chamber; an air supply path configured with a first end opening so as to face inside the jig insertion hole and with the other end connected to an air supply source for supplying compressed air; an air-liquid supply tube with a first end connected to the liquid supply chamber and the other end connectable to a valve of a pneumatic tire; a press jig of a pillar shape, movable within the jig insertion hole of the injection unit; a jig communication passage configured in the press jig, with a first end opening at the leading end side of the press jig and another end opening at the outer peripheral surface of the press jig, when the press jig moves within the jig insertion hole the first end being in communication with the inside of the liquid container and the other end being connected to the air supply path; an O-ring, fitting to a groove formed at the leading end side of the outer peripheral surface of the press jig and sealing between the outer peripheral surface of the press jig and the inner peripheral surface of the jig insertion hole when the press jig is in an inserted state within the jig insertion hole; an air supply port provided to the first end of the air supply path, opening to the inner peripheral surface of the jig insertion hole and also being of an opening diameter smaller than a strand diameter of the O-ring.