| 摘要 |
<p>The guide for a anti backbend chain has a guide block (60) with a curved guiding surface (70), wherein the projection of a connecting line of a most forward guide point to an imaginary circumferential point of the chain wheel (3), the associated effective radius of which is perpendicular to the direction of extent of the extended chain in the unguided region, has a length (L') on the direction of extent which is smaller than the doubled dimension of a chain pitch (K), but larger than the basic dimension of this chain pitch. An independent claim is included for an operating device for movable components of a building, especially pivotable windows or flaps, incorporating a guide for a anti backbend chain.</p> |
