Patent ID: 6039300
Filing Date: 2000-03-21
Classification: F16K,F17C

Abstract:
A gas supply valve for a gas-powered vehicle comprisinga valve body having a vertical stem opening,a gas inlet member fixed to a lower end of the vertical stem opening to communicate with a gas container,an upper part stem slidably and rotatably inserted into the vertical stem opening on an upper side of the gas inlet member,a lower part stem slidably inserted into the vertical stem opening on the upper side of the gas inlet member to move up and down according to a rotation of the upper part stem,a valve member disposed in the lower portion of the gas inlet member for opening and closing the lower end of the opening of the gas inlet member with the up and down movements of the lower part stem, said valve member being urged with a spring force in a direction to close the gas inlet,a gas flow passage formed between the periphery of the lower part stem and the inner peripheral surface of the vertical stem opening to communicate the gas inlet and a gas supply passage formed in the valve body,a ring-like seal member mounted onto the lower end portion of the upper part stem to contact an inside peripheral surface of the upper portion of the vertical stem opening with the peripheral surface of the ring-like seal member under pressure,a ring-like stopper fixed to the upper opening portion of the vertical stem opening for receiving the upper end surface of the ring-like seal member with the under surface of the ring-like stopper, andan O-ring fixed to the peripheral surface of the upper end portion of the lower part stem to contact with the inside peripheral surface of the vertical stem opening under pressure for filling up a clearance between the peripheral surface of the lower part stem and the inside peripheral surface of the vertical stem opening.