| 摘要 |
<p>The invention relates to a pressure-operated piston-cylinder device, comprising at least one pair of contacts which act as a piston end position switch. According to the invention one contact element (12, 13) is a coil spring (18, 19) which extends coaxially for an end face of the piston (6) and may slidingly engage a central bore (4, 9) in the opposite cylinder end. The other contact element (12a, 13a) is mounted in the wall of said central bore (4, 9) in an electrically insulating manner and is connected to an electrical lead (16, 17). The latter contact is extending laterally into said central bore (4, 9) so as to be contacted by the free terminal winding of the coil spring (18, 19) when the piston (6) has arrived in its respective end position. <IMAGE></p> |
