Darryl Robertson

US Patent:

63074729, Oct 23, 2001

Filed:

Oct 21, 1999

Appl. No.:

9/422455

Inventors:

Darryl Lee Robertson - Phoenix AZ

International Classification:

G08B 1314

US Classification:

340569

Abstract:

A networked architecture for indicating node usage or occupancy comprising a plurality of nodes each movable between an unoccupied condition and an occupied condition, a plurality of sensor devices each movable from an inactive condition to an active condition in response to movement of one of the nodes from the unoccupied condition to the occupied condition, and indicator apparatus defining a plurality of indicator elements each for emitting a stimulus in response to movement of one of the sensor devices from the inactive condition to the active condition.