Fire escape – ladder – or scaffold – Ladder – Extension
Reexamination Certificate
2006-09-05
2006-09-05
Thompson, II, Hugh B. (Department: 3634)
Fire escape, ladder, or scaffold
Ladder
Extension
C182S208000
Reexamination Certificate
active
07100741
ABSTRACT:
An aerial ladder roller assembly to improve the function of the ladder during extension and retraction of sections of a multiple-section aerial ladder. One embodiment has a plurality of aligned apertures for rotatably mounting and a roller that is rotatably mounted in a housing. The housing has a roller pad and an aperture through which a roller extends. The housing is adapted for pivotal mounting at a point approximately central to the length of the axis. A roller is rotatably mounted in the housing on each side of the pivotal mounting point. A pair of rollers is rotatably mounted in the housing on each side of the pivotal mounting point. Also provided is a multiple-section ladder, having at least two nested sections with a housing having at least one roller is rotatably and pivotally mounted extending through an aperture. The slide plate of the second section juxtaposes the roller assembly.
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Longenecker Jason L.
Salmi James A.
Wissler Reid L.
Foster Swift Collins & Smith, P.C.
Maki Allan O.
Spartan Motors Inc.
Thompson II Hugh B.
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