Process and apparatus for preventing oxidation of metal

Electrolysis: processes – compositions used therein – and methods – Electrolytic material treatment – Metal or metal alloy

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C205S727000, C205S728000, C205S729000, C204S196210, C204S196360

Reexamination Certificate

active

06875336

ABSTRACT:
An apparatus for prevention of corrosion in metal objects uses a capacitively coupled fastener or pad attached to a metal body being protected from corrosion. The metal body and the negative terminal of a source of DC voltage (battery) are grounded. The positive terminal of the source of DC voltage is connected to electronic circuitry that imparts pulses of low voltage DC through the capacitor to the fastener. These pulses of electrical current inhibit the oxidation of the metal object by providing a source of electrons to the oxidizing chemicals in contact with the metal. The electronic circuitry includes a reverse voltage protector to prevent the application of reverse source voltage. The circuitry also includes a power conditioner to supply a constant DC voltage to a microprocessor. The microprocessor generates pulses of DC signals that are amplified by a pulse amplifier and imparted to the conductive facing of the pad. For larger objects, a first and second cable are attached to a metal object. A phase compensated signal is applied to each cable to provide a phase synchronous signal at the metal object. The invention also includes a battery voltage monitor and a power indicator to indicate battery level. When the battery voltage drops below a reference level, the microprocessor senses this low voltage condition and shuts off operation of the pulse amplifier, thereby conserving battery power.

REFERENCES:
patent: 3242064 (1966-03-01), Byrne
patent: 3692650 (1972-09-01), Kipps
patent: 4647353 (1987-03-01), McCready
patent: 4767512 (1988-08-01), Cowatch et al.
patent: 4828665 (1989-05-01), McCready
patent: 4950372 (1990-08-01), McCready
patent: 5102514 (1992-04-01), McCready
patent: 6046515 (2000-04-01), Lewis
patent: 6331243 (2001-12-01), Lewis

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process and apparatus for preventing oxidation of metal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and apparatus for preventing oxidation of metal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for preventing oxidation of metal will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3406491

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.