| 摘要 |
<p>Switching apparatus for switching successive switching states in two directions comprises a step-switching element 1 moveable by a commanding element, an arrangement for blocking and unblocking the continuation of switching (18, figure 6c) from an intermediate switching state and a guide (43) for guiding the arrangement for blocking and unblocking by a measurable quantity. The apparatus may be an electromechanical apparatus. The apparatus preferably comprises a circular switching tool for switching a motor.</p> |
