| 摘要 |
<p>A method of reducing the torque required to provide relative rotation of two connected members includes the step of providing impacts at or adjacent the connection between the two members at a rate of at least two impacts per second. The invention also provides an apparatus (1) for reducing the torque required to provide relative rotation of two connected members comprising an impact member (10) adapted to provide an impact to at least one of the connected members (100), driving means (12, 14) for driving the impact member, wherein said driving means is operable to cause the impact member to automatically and repeatedly impact upon said at least one member.</p> |
