摘要 |
<p>Under a table for a support device there is a slide (4b) moved on guide devices (13,14) by rollers (4c). On the slide there is a driving element in the form of a friction rail. At the first end, the driving element is carried in pendulum bearings on an axle (7). On the opposite second end of the friction rail there is a swivel device in the form of a pneumatically operated piston.</p> |