Retractable column and method of forming

Details Retractable column and method of forming Retractable column and method of forming

E - Fixed Constructions

04

G

E04G 1/22 (2006.01) B66F 3/06 (2006.01) E04H 12/00 (2006.01) E04H 12/18 (2006.01) E04H 12/34 (2006.01) F16S 3/00 (2006.01)

Patent

CA 2457178

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.

La présente invention concerne un procédé et un dispositif améliorés destinés à former une tour ou colonne rétractable. La présente invention comprend des crochets pointus fixés à chaque section d'une chaîne de sections, l'un dans un sens horizontal et l'autre de manière décalée. Les chaînes de sections sont placées sur un mécanisme de levage dans une position opérationnelle, puis levées au moyen d'un moteur. Pendant leur élévation, les chaînes sont guidées à l'aide d'une tour de guidage, de rouleaux, de cales et de crémaillères dans une position donnée, les crochets de sections adjacentes des chaînes de sections formant alors des couplages. Le couplage des crochets des sections de chacune des chaînes de sections adjacentes permet de former la colonne.

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