Patent ID: 8514054
Filing Date: 2013-08-20
Classification: F16P,Y10T

Abstract:
1. A safety system comprising; a work area having a perimeter and hazardous automated machinery within the perimeter, access by workers to the work area within the perimeter controlled by one or more controlled access points; at least one safety work cell within the perimeter, each safety work cell having no hazardous automated machinery within or accessible from the safety work cell; a primary key receptacle at each controlled access point and a primary key which fits within each primary key receptacle, configured so that upon turning the primary key, automation is stopped; at least one secondary key; at least one secondary key exchange box at each controlled access point comprising at least one secondary key receptacle; the at least one secondary key exchange box configured to release the at least one secondary key upon locking the primary key into the at least one secondary key receptacle and to unlock the associated control access point to allow a worker to enter; at least one tertiary key receptacle within each safety work cell configured to receive the at least one secondary key; and a controller programmed to permit operation of the hazardous automated machinery only when all controlled access points are closed, all secondary keys are placed within either the secondary key receptacle or the tertiary key receptacle.