Fire escape – ladder – or scaffold – Endless conveyer escape
Reexamination Certificate
2010-08-08
2011-12-13
Shue, Alvin Chin (Department: 3634)
Fire escape, ladder, or scaffold
Endless conveyer escape
C182S043000, C182S044000, C182S194000, C182S195000, C182S228100
Reexamination Certificate
active
08074767
ABSTRACT:
An extensible, vehicle-mounted ladder with movable rungs is used to aid in raising and lowering in rescue operations. The ladder includes a rotatable base having storage space to hold extra rungs supporting the variable extended positions of the ladder. The ladder includes a plurality of ladder units or extensible booms. Each ladder unit includes four C-rails. A first ladder unit is attached to the rotatable base and the others extensible therefrom. The ladder includes rungs that slidably engage within two of the C-rails. A drive cable connects the rungs in a closed loop and is powered to enable rung rotation in a closed loop around the ladder units within the C-rails.
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Chin Shue Alvin
Quinn Colleen M
Ventre, Jr. Louis
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