| 摘要 |
<p>The present invention consists in a switch actuator to move an air brake switch (124) such as those commonly found in power transmission lines, between an open and closed position wherein the actuator (4) includes a first rotatable member in mechanical connection with and to move said switch (124) between said open and closed position by the rotation of said rotatable member, a second rotatable member in mechanical connection with an actuator such as a linear drive motor (8), a connection member rotatable about the same pivot axis as the first and second members, the connection member being biased for rotation about the pivot axis in a toggle manner and providing a mechanical connection means to locate (a) against a fixed point of, and be displaced by, said second rotatable means at least during the rotation of the connection member by the second rotation means towards the point of toggle of the connection means, and (b) against a fixed point of and to thereby displace, the first rotatable member at least during rotation of said connection member passed said point of toggle.</p> |
