Two terminal corrosion protection device, system, and method
AssigneeCanadian Auto Preservation Inc.
InventorPetros Z. Giatis
Life of this patent
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Abstract
A corrosion protection device, system, and method are provided. The device may operate while being coupled to the object being protected and to a power source using a total of only two terminals. This may be accomplished by de-referencing the return path node of the circuit using a choke device that blocks a temporal AC component of an anti-corrosion signal. The choke device therefore diverts the anti-corrosion signal to a single negative/ground path to the object and then returns through a positive lead of the circuit. A two terminal corrosion protection device may thereby simplify the installation process, for example on a vehicle, by not requiring that another connection be made to the object at a spaced apart location from a first connection to the object.
Claims30
A corrosion protection device comprising:
- a first terminal and a second terminal for receiving power at the corrosion protection device from a power source external to the corrosion protection device to power the corrosion protection device, the first terminal and a second terminal for coupling to a respective first node and second node of the power source, and the second terminal for coupling to a metal object;
- a corrosion protection module for generating an electrical waveform signal having a temporal AC component at an output port of the corrosion protection module, wherein the output port is coupled to the second terminal for providing the temporal AC component of the waveform signal at the second terminal for reducing a rate of corrosion of the metal object;
- and
- a choke device coupling the output port to a return port of the corrosion protection module such that the choke blocks the temporal AC component of the waveform signal from entering the return port, and such that the temporal AC component of the waveform signal is able to flow to the second terminal.
A method for reducing a rate of corrosion of a metal object, the method comprising:
- providing a corrosion protection device having first and second terminals;
- coupling the first and second terminals of the device to first and second nodes of a power source;
- coupling the device to the metal object via the second terminal of the device;
- generating an electrical waveform signal having a temporal AC component at an output port of a corrosion protection module of the device;
- returning the electrical waveform signal to a return port of the corrosion protection module, wherein the returning comprises blocking the temporal AC component of the waveform signal;
- and
- providing the electrical waveform signal to the second terminal for inducing a current in the metal object for reducing a rate of corrosion of the metal object.
A device, comprising
- a first terminal and a second terminal for receiving power at the device from a power source external to the device to power the device, the first terminal and a second terminal for coupling to the power source, and the first terminal for coupling to a metal object;
- a corrosion protection module having an output port and a return port, the corrosion protection module configured to output, from the output port, an anti-corrosion signal having an AC component, the output port being coupled to the first terminal for providing the anti- corrosion signal at the first terminal for reducing a rate of corrosion of the metal object;
- and
- a return path device coupled in series between the output port and the return port and being configured to prevent the AC component of the anti-corrosion signal from entering the return port.
Dependencies are inferred from the claim text.