List of transformer patents

From Wikipedia, the free encyclopedia

A transformer is the means interposed between the electrical source and the electrical load circuit for controlling the voltage, current magnitude, or phase. More specifically, a transformer is an electrical device that transfers energy from one circuit to another by magnetic coupling with no moving parts. A transformer comprises two or more coupled windings, or a single tapped winding and, in most cases, a magnetic core to concentrate magnetic flux. This listing also includes generic transformer systems, that is, systems in which a transformer supplies an output circuit. Transformers here are used to convert between high and low voltages, to change impedance, and to provide electrical isolation between circuits. Below is a list of transformer patents.

[edit] American

Numbered

U.S. Patent 0119,825 , Improvements in induction coils, Daniel McFarland Cook
U.S. Patent 0349,611 , Induction coil, William Stanley, Jr.
U.S. Patent 0382,282 , Method of converting and distributing Electric Currents, Nikola Tesla
U.S. Patent 0387,117 , System of electrical distribution, William Stanley, Jr.
U.S. Patent 0389,795 , Means for distributing electrical energy, Sebastian Ziani de Ferranti
U.S. Patent 0390,413 , System of electrical distribution, Nikola Tesla
U.S. Patent 0427,606 , Electromagnet, F. J. Patten
U.S. Patent 0433,702 , Electrical transformer Or induction device, Nikola Tesla
U.S. Patent 0593,138 , Electrical transformer, Nikola Tesla
U.S. Patent 0645,014 , System of electrical distribution, W. B. and L. C. Reed
U.S. Patent 0667,889 , Electric spark coil, S. B. Morss
U.S. Patent 0683,954 , Telephone transformer, H. Liebreich
U.S. Patent 0773,372 , Electric circuit, G. A. Campbell
U.S. Patent 0773,472 , Electric circuit, G. A. Campbell
U.S. Patent 0848,676 , Electrical transformer, Jozef Murgaš
U.S. Patent 1,119,732 , Apparatus for transmitting electrical energy, Nikola Tesla
U.S. Patent 1,143,963 , Induction coil
U.S. Patent 1,220,166 , Variable magnetic opposed coil electric circuit, I. E. Aske
U.S. Patent 1,236,675 , Ventilating means for reactance coils, L. W. Chubb
U.S. Patent 1,328,797 , Means for controlling alternate currents, E. F. W. Alexanderson