Collapsible structural members

Details Collapsible structural members Collapsible structural members

2006-04-18

2009-12-22

Canfield, Robert J (Department: 3635)

Static structures (e.g., buildings)

Striplike unit, reversibly flexible and rigid

C052S223900, C052S641000, C052S645000

Reexamination Certificate

active

07634874

ABSTRACT:
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.

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