Electricity: electrical systems and devices – Discharging or preventing accumulation of electric charge – Structurally combined with building or vehicle
Patent
1988-06-30
1990-02-13
Reynolds, Bruce A.
Electricity: electrical systems and devices
Discharging or preventing accumulation of electric charge
Structurally combined with building or vehicle
361212, 361215, 340649, 340652, H02H 314, H05F 300
Patent
active
049011952
ABSTRACT:
The invention comprises a self-proving vehicle grounding system for placing the ground of a transportation vehicle at the same voltage as the ground of a loading rack and is intended for use in conjunction with an overfill protection system. The overfill protection system comprises a sensor unit on the vehicle and a base unit on the rack for disabling the loading equipment when the sensor detects overfill. The invention comprises three parts, a controller unit coupled to the filling station ground, a grounding bolt unit which is coupled to the transportation vehicle and a multi-conductor cable. The controller unit comprises a signal generator which produces a first electrical signal and a signal detector which, when it receives a specified second electrical signal at its input, enables the pumping equipment of the filling station. The grounding bolt unit comprises a signal modifier which, when coupled to the signal generator in the controller unit, modifies the first electrical signal to produce the second electrical signal at the input of the signal detector. A single cable provides the necessary connections between the units of the overfill protection system as well as coupling the modifier circuit of the grounding bolt to the signal generator circuit of the controller unit.
REFERENCES:
patent: 3343154 (1967-09-01), Seesselberg
patent: 4225899 (1980-09-01), Sotiriou
patent: 4691198 (1987-09-01), Mortensen
Technical description, Scully Groundhog Self-Proving Vehicle Grounding System, Scully Electronic System, 70 Industrial Way, Wilmington, Mass. 01887, Mar. 1988.
Product Literature for the Scully Groundhog Self-Proving Vehicle Grounding System, Scully Electronic Systems, 70 Industrial Way, Wilmington, Mass. 01887, May 1987.
Fuller Leon
Reynolds Bruce A.
Scully Signal Company
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