Patent ID: 7665576

Claim:
A movable safety barrier system comprising: a flexible light weight barrier member having a barrier member length with first and second ends, and a width W, the barrier member comprising flexible material, the length of the barrier member for extending across and moving sideways relative to the length over support members of a structure; first and second end supports supporting respective first and second ends of the length of the barrier member, the length of the barrier member being extended between the end supports, the end supports configured for independent travel relative to separate spaced apart support members of the structure, and supporting the ends of the length of the barrier member in a manner that the length of the barrier member extending between the end supports is movable sideways relative to the length, at least one end support comprising a supply roll for storing at least a portion of the flexible barrier member; and first and second opposed movable carriages connected to respective first and second end supports, each carriage having a roller system with at least two spaced apart roller assemblies configured for engaging and traveling over top surfaces of at least two support members of the structure, the roller assemblies being secured to a lateral carriage member on a lead travel end of the carriage, the lateral carriage member configured for closely traveling over and above said at least two support members of the structure, said supply roll being mounted and positioned at a trailing end of at least one carriage perpendicular to and below the lateral carriage member by being mounted to a recessed mounting arrangement, the recessed mounting arrangement being connected to and being located below the lateral carriage member, wherein each carriage further comprises two carriage members connected to the lateral carriage member forming a generally triangular shape, the flexible barrier member, for extending over said two carriage members of the triangle, said two carriage members having recessed top surfaces to allow the barrier member to extend closer to the support members of the structure.