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Patent Searching and Data


Title:
RETRACTABLE COLUMN AND METHOD OF FORMING
Document Type and Number:
WIPO Patent Application WO2002025035
Kind Code:
A3
Abstract:
The present invention is an improved apparatus and method for forming a retractable tower or column. The present invention includes pointed hooks (40, 42) wherein the hooks (40, 42) are attached to each section of a section chain (22),one (40) in a horizontal direction and one (42) in an off-set manner. The section chains (22) are placed on a take-up mechanism (80) in an operable position and then raised utilizing a motor. As the section chains (22) are raised, they are guided by a guide tower (118), rollers (112, 114, 115, 117) shims (116), and gear racks (36) into a position whereby hooks (40, 42) from adjacent sections (22) of the section chains (22) form coupled engagements. The coupled engagement of the hooks (40, 42) of the sections of each adjacent section chains (22) thereby form the column.

Inventors:
OLSEN STEVEN A
Application Number:
PCT/US2001/029741
Publication Date:
June 13, 2002
Filing Date:
September 21, 2001
Export Citation:
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Assignee:
TOWER SOLUTIONS LLC (US)
International Classes:
E04H12/34; B66F3/06; E04G1/22; E04G11/48; E04H12/18; F16S3/04; (IPC1-7): E04H12/00; E04H12/18
Foreign References:
US4920710A1990-05-01
Other References:
See also references of EP 1319111A4
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