Fire escape – ladder – or scaffold – Torso harness – Ladder-associated
Reexamination Certificate
2005-08-31
2009-10-13
Chin-Shue, Alvin C (Department: 3634)
Fire escape, ladder, or scaffold
Torso harness
Ladder-associated
Reexamination Certificate
active
07600610
ABSTRACT:
A climb assist system for use in combination with a climbing structure having upper and lower ends. The climb assist system includes a header assembly for attachment to the upper end of the climbing structure. The header assembly includes a pulley frame having opposing front and rear ends and front and rear pulleys located adjacent the front and rear ends. Elongated guide members extend from the header assembly downwardly toward the lower end of the climbing structure. A climb assist cable extends over the front and rear pulleys and includes a front cable portion extending along a front side of the climbing structure for attachment to a worker, and a rear cable portion extending along a rear portion of the climbing structure adjacent to the guide members and attached to a counterweight for offsetting the worker's weight. The counterweight includes guide portions engaged with the guide members to guide the counterweight in a path closely adjacent to the ladder.
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Chin-Shue Alvin C
Stevens & Showalter LLP
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