| 摘要 |
<p>An oscillating arm system comprises a least two oscillating arms (6, 10; 51, 52) orientable at least on one plane situated above an articulation (1, 50) arranged between the two arms and susceptible of being locked above a stop device (20; 90). In order to obtain a completely rigid locking in substantially any angle and arrangement, there is provided to form the stop device (20, 90) between the two oscillating arms (6, 10; 51, 52) as a geometrical unlockable closure and to provide one of the two articulation halves (9a, 9b; 58, 59) with a plurality of precision subdivisions cooperating with the geometrical closure in order to form a plurality of orientation angles between the two oscillating arms (6, 10; 51, 52).</p> |
