| 摘要 |
<p>Embodiments of the present invention provide pulley apparatuses that can be easily incorporated into block-and-tackle configurations. In some embodiments, a ro pe can be easily dropped into place and removed, rather than having to be threaded in. For example, the pulley housing can include a rope channeling structure near the end opposite the aperture, and the rope channeling structure can facilitate introducing the rope into engagement with the wheel and/or removing the rope from engagement with the wheel. In some embodiments, the rope channeling structure can prevent th e rope from inadvertently becoming removed from the pulley. Some pulley apparatuses can comprise a minimal number of parts, which can significantly simplify the manufacturing process and provide for a more consistent final product.</p> |
