| 摘要 |
A method of manufacturing a gas-filled electric switch comprising the steps of; disposing an electric switch unit (2) in a container (1) having two vent holes, closing an opening of the container, through which the electric switch unit is disposed in the container, to thereby airtightly seal the container except the two vent holes, charging a required gas into the container through any one of the two vent holes while exhausting through another vent hole to thereby substitute is exhausted from the other the required gas for the gas in the container, and sealing the holes by means of punching means (10) when the concentration of the required gas in the container has reached a predetermined level. These steps may be associated in continuation with the manufacturing steps under a normal atmosphere. <IMAGE> |
