Device for automatic refuelling of vehicles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 21, 2001
Grant Date -
N/A
app pub date -
Mar 2, 2001
filing date -
May 7, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for automatically fuelling vehicles, primarily automobiles, that includes a sensor to detect the presence of a person in proximity to the fuelling system. A fuelling robot includes a robot head that can be moved relative to the robot to enable the robot head to be brought by a positioning system from a rest position to a predetermined position in relation to the fuel-tank pipe of the vehicle. The robot head is provided with electrically conductive sheet-metal elements that are connected to an oscillating electric circuit. A sensing circuit senses a change in the frequency of the oscillating circuit that results from a change in the capacitance between the sheet-metal elements, such as when a person is near the fuelling robot. The sensing circuit activates an alarm in response to a predetermined frequency change, to warn a person who is too near the fuelling robot.
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