Retractable Mirror Module for Tow Cart Light Curtain
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
Mechanically interconnected mirror modules, mounted on a tow cart, are designed to be externally actuated to extend or retract upon the engagement or disengagement of an automated guided vehicle (AGV). The mirror modules aid in completing a light path forming a light curtain which optically controls the movement of the AGV. Fig. 1 shows an AGV attached to a tow cart around which a light source creates a light curtain with the aid of mirrors suitably located to direct the light path to a photodetector which controls the movement of the AGV. Fig. 2 shows the mirror modules 10 mounted to the underside of the AGV. Mirror module 10 is comprised of extension arms 11 and 12 suitably positioned to be externally actuated by engagement means 13 and disengagement means 14.