Optical guidance system for industrial vehicles
Patent 4947094 Issued on August 7, 1990. Estimated Expiration Date: 
August 7, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 7, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3738443 Reverse direction guidance system for lift truck Unmanned vehicle travel control device Floor position sensing apparatus and method Unmanned vehicle control system and method Guidance system for unmanned transporting vehicle Patent #: 4711316 InventorsAssigneeApplicationNo. 077701 filed on 07/23/1987US Classes:318/587, Land vehicles180/168, Having controlling means adapted to interact with stationary means which describes course of vehicle's travel180/169, Radiation, force, or waves reflected from external object or surface701/28Having image processingExaminersPrimary: Shoop, William M. Jr.Assistant: Martin, David Attorney, Agent or FirmInternational ClassG05D 001/00AbstractAn automatically guided vehicle system for steering a vehicle. Optical sensing detects an image of a segment of track mounted above the path of the vehicle. Electrical signals corresponding to the position of the track are generated. A control circuit then converts these signals into movements for the steering of the vehicle.Field of SearchHaving controlling means adapted to interact with stationary means which describes course of vehicle's travelRadiation, force, or waves reflected from external object or surface WITH MEANS FOR CONTROLLING OPERATION RESPONSIVE TO ELECTROMAGNETIC RADIATION, MAGNETIC FORCE, OR SOUND WAVES RECEIVED FROM SOURCE, OR REFLECTED FROM OBJECT OR SURFACE, LOCATED APART FROM VEHICLE Optical or photoelectric line followers Land vehicles Vehicular guidance systems with single axis control | |
