Patent ID: 7650726

Claim:
A raised floor system for disposition above a subfloor, comprising: a plurality of pedestals positioned on the subfloor in spaced relationship and projecting upwardly therefrom; a raised floor supported on said pedestals adjacent upper ends thereof, whereby the raised floor is positioned vertically upwardly from the subfloor to define a clearance space therebetween; an electrical grounding arrangement associated with a plurality of said pedestals, the electrical grounding arrangement transferring electric charge between a set of the plurality of said pedestals in response to accumulation of electric charge on said raised floor relative to said subfloor; the electrical grounding arrangement as associated with each said pedestal of said plurality of said pedestals including a first clamping part which is permanently and fixedly mounted on the respective pedestal and a second clamping part which is disposed in cooperative relationship with said first clamping part to permit clamping engagement of a grounding cable therebetween, said second clamping part being movably mounted on said pedestal by an adjustable fastener for permitting the second clamping part to be stationarily positionally fixed relative to the pedestal when a grounding cable is clamped between the first and second clamping parts; each said clamping part comprising: a horizontally large platelike base adapted to be supportingly engaged on the subfloor; an upright pedestal column fixedly positioned centrally on said base and cantilevered upwardly therefrom, the pedestal column having structure associated with an upper end thereof for engagement with said floor; said electrical grounding arrangement being associated with the base part for permitting grounding engagement with the grounding cable; said grounding arrangement including said first clamping part fixed to said base and protruding upwardly thereof, said first clamping part defining thereon an upwardly-facing first grounding surface adapted for grounding engagement with the grounding cable; and said grounding arrangement including said second clamping part which is mounted on the base for at least limited relative movement and which defines thereon a downwardly-facing second grounding surface adapted for engaging the grounding cable, whereby the grounding cable is fixedly gripped on generally opposite sides thereof by the first and second clamping parts; said base having a pair of horizontally elongate ribs protruding upwardly therefrom in sidewardly spaced relation and defining thereon a sidewardly spaced pair of upper surfaces which define said first grounding surface, and said second grounding surface being disposed sidewardly between the sidewardly spaced pair of upper surfaces, said grounding cable extending between and being engaged with said spaced pair of upper surfaces and being engaged with said second grounding surface at a location between said pair.