| 摘要 |
The invention relates to a limited torque applicating mechanism for applying caps to the threaded necks of containers. Torque is transmitted to a conventional cap applicating head from a rotating power shaft by positioning a ring of permanent magnets on either the driven or driving element and disposing a ring of high magnetic permeability material concentrically adjacent on the other of the driven or driving elements so that the torque transmitted between the driving and driven elements is limited by the magnetic attraction between the ring of permanent magnets and the ring of high permeability magnetic material. The apparatus further incorporates a mechanism for adjusting the relative axial position of the ring of permanent magnets with respect to the ring of high magnetic permeability material to permit selective adjustment of the amount of torque transmitted. |
