Portable collapsible tower

Details Portable collapsible tower Portable collapsible tower

1995-06-13

1996-06-11

Canfield, Robert J.

Static structures (e.g., buildings)

Mechanism operated relatively movable shaft assembly

Longitudinally extensible by flexible drive or hoist

52114, 52116, 52117, 521231, 52119, 182207, 362418, 362285, E04H 1218, B66C 2300

Patent

active

055243983

ABSTRACT:
A portable collapsible tower including a frame, at least one stationary tower member fixed to the frame and at least one movable tower member movable along the exterior portion of the stationary tower member relative to the stationary member. A coupling, movably couples the stationary and movable tower members for movement along the exterior portions. At least one cable located along the exterior portions of the tower members, is used to extend and retract the tower members and a light or tool support bar. As the tension in the one or more cables is altered by a tension altering device, the support bar and tower members are moved between fully extended and fully retracted positions.

REFERENCES:
patent: 3396601 (1968-08-01), Wright
patent: 3463916 (1969-08-01), De Bella
patent: 4220981 (1980-09-01), Koether
patent: 4388033 (1983-06-01), Pipes
patent: 4420917 (1983-12-01), Parlanti
patent: 4468904 (1984-09-01), O'Malley
patent: 4594824 (1986-06-01), Ziegler
patent: 4600980 (1986-07-01), Dahlgren
patent: 4655323 (1987-04-01), Bocker
patent: 5115606 (1992-05-01), Renegar et al.
patent: 5129199 (1992-07-01), Miller et al.
patent: 5168680 (1992-12-01), Matlock
L6 and L8 Portable Light Towers Brochure, .COPYRGT.1992 by Ingersoll-Rand Company, Form 2116B.

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