| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a simply structured trigger device used in a place where it is difficult for a person to work, by which a trouble is hardly caused and misoperation can be prevented. <P>SOLUTION: The trigger device comprises a cylindrical container 2 one end of which is opened and the other end has a hole 2a in the wall, a cover 3 for closing the opening of the end of the container 2, a piston rod 5 penetrating the hole 2a formed in the other end of the container 2, and a sealing medium 11 sealed in an inner space 10 surrounded by the container 2, the cover 3 and the piston rod 5. The piston rod 5 is provided with a trigger 5a at an end thereof, which can protrude from or retreat into the container 2. The piston rod 5 is moved by the pressure of the outer space 17 and the pressure of the inner space 10 to allow the trigger 5a to protrude from or retreat into the container 2. <P>COPYRIGHT: (C)2007,JPO&INPIT |
