| 摘要 |
<p>The actuating and counterbalancing device for overhead doors comprises a cable (16) forming a stationary strand (16.1) fastened at one of its ends to a bearing plane and two strands (16.2 - 16.3) (the strand (16.2) being fastened to or associated with a means fixed to the panel, and the strand (16.3) being defined by a guide pulley (17)), and one or more counterweights (14, 15) being arranged between the strands (16.1 - 16.3), is notable in that the angulation between the strands (16.1 - 16.3) can vary as a function of the opening or closing position of the panel (5). <IMAGE></p> |
