| 摘要 |
<p>APPLICATION OF: JAMES R. HARMAN FOR: HOIST WITH LOAD BRAKE HAVING RELEASE MECHANISM THEREFOR A hoist of the type including a Weston-type load brake actuated by relative rotary movement between a pair of input drive members and having a control mechanism actuated by plunger carried within the hoist to allow or prevent axial movement of the input drive members from the position wherein their relative rotary movement actuates the load brake.</p> |
