Readily extendible telescopic lifting system

Details Readily extendible telescopic lifting system Readily extendible telescopic lifting system

2007-05-22

2010-02-02

Siconolfi, Robert A (Department: 3657)

Endless belt power transmission systems or components

Plural turns of same belt about pulley axis

C474S065000, C474S066000, C474S067000, C052S121000, C343S883000

Reexamination Certificate

active

07654923

ABSTRACT:
By providing a plurality of cylindrically shaped tube members nested together in coaxially aligned relationship, with each tube member being connected to a separate and independent control segment, with the control segments being constructed for raising and lowering the associated tube segment, an easily produced, reliable, dependable, and highly portable telescopically extendable and retractable multi-element system is realized. In the preferred embodiment, each control segment incorporates a separate endless loop drive belt which is cooperatively associated with a pair of pulleys mounted at opposed ends of the segment. Furthermore, each control segment is interconnected to the endless loop drive belt of an adjacent segment for causing all of the segments to move simultaneously in response to the initial movement of a first control segment.

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patent: 6347761 (2002-02-01), Larson

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