Extensible and contractible mast

Details Extensible and contractible mast Extensible and contractible mast

1991-07-02

1993-10-05

Chilcot, Jr., Richard E.

Static structures (e.g., buildings)

Striplike unit, reversibly flexible and rigid

52118, 52632, E04H 1218

Patent

active

052493962

ABSTRACT:
A mast, column or post is assembled from successive segments which are arrayed along turns of a helix and are connected together successively and to the turns above and below such segments to enable a large diameter mast to be erected and, upon removal of the segments, to be lowered.

REFERENCES:
patent: 3361377 (1968-01-01), Trexler, Jr.
patent: 3451182 (1969-06-01), Lodrick
patent: 3474976 (1969-10-01), Rushing et al.
patent: 4057942 (1977-11-01), Kranefeld
patent: 4257201 (1981-03-01), Landolt
patent: 4350255 (1982-09-01), Blase et al.
patent: 4478014 (1984-10-01), Poock
patent: 4918896 (1990-04-01), Wiese
patent: 4961370 (1990-10-01), Sawyer
patent: 5035094 (1991-07-01), Legare
patent: 5062245 (1991-11-01), Dent

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