07634874 is referenced by 10 patents and cites 29 patents.

A collapsible structural member has been provided in which substantially identical modules made up of metal or plastic are threaded on a tensioning member such as a cable and are movable relative to each other in the collapsed condition of the beam and are brought together into a condition where adjacent modules are locked together to form a rigid construction when the beam is in its erected operating condition. The beam is changed from its erected condition to its collapsed condition by relaxing the tensioning member or cable.

Title
Collapsible structural members
Application Number
11/405968
Publication Number
7634874 (B2)
Application Date
April 18, 2006
Publication Date
December 22, 2009
Inventor
Nicholas G Lucas
Nokomis
FL, US
Agent
David R Schaffer Esq
Miles & Stockbridge P C
Assignee
Luco Ed Enterprises
PA, US
IPC
E04H 12/18
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