Tesla Patents
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390,721 - Dynamo-Electric MachineCategory: Motors & Generators Country: United States Application Date: April 28th, 1888 Issue Date: October 9th, 1888 
My present invention relates, chiefly, to the alternating-current system invented by me and described in prior patents, notably Nos. 381,968 and 382,280, of May 1, 1888, in which the motors or transformers, or generally the converters, are operated by a progressive shifting or movement of their magnetic poles produced... more >>
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390,415 - Dynamo-Electric Machine or MotorCategory: Motors & Generators Country: United States Application Date: May 15th, 1888 Issue Date: October 2nd, 1888
This invention is an improvement in the construction of dynamo or magneto electric machines or motors, the improvement consisting in a novel form of frame and field-magnet which renders the machine more solid and compact as a structure, which requires fewer parts, and which involves less trouble and expense in its... more >>
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487,796 - System of Electrical Transmission of PowerCategory: Power Distribution Country: United States Application Date: May 15th, 1888 Issue Date: December 13th, 1892
This invention is an improvement in systems of electrical distribution of power wherein are employed motors having two or more independent energizing-circuits, through which are passed alternating currents differing in phase that are produced by a magneto-electric machine having independent induced circuits, or that... more >>
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511,915 - Electrical Transmission of PowerCategory: Power Distribution Country: United States Application Date: May 15th, 1888 Issue Date: January 2nd, 1894
In former patents granted to me I have shown and described a system for the electrical transmission of power characterized by the following particulars: The motor contains independent energizing circuits and the generator has corresponding induced or current generating circuits which are connected by independent line... more >>
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555,190 - Alternating MotorCategory: Motors & Generators Country: United States Application Date: May 15th, 1888 Issue Date: February 25th, 1896
In former patents granted to me—notably, Patents Nos. 381,968 and 382,280, of May 1, 1988—I have shown and described a system for the electrical transmission of power characterized by the following particulars: The motor contains independent energizing-circuits and the generator has corresponding induced... more >>
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524,426 - Electromagnetic MotorCategory: Motors & Generators Country: United States Application Date: October 20th, 1888 Issue Date: August 14th, 1894
In previous patents of the United States notably in those numbered 381,968 and 382,280, dated May 1, 1888, I have shown and described a system of transmitting power by means of electro-magnetic generators and motors. The distinguishing feature of this system was shown to be the progressive movement or shifting of the... more >>
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511,559 - Electrical Transmission of PowerCategory: Power Distribution Country: United States Application Date: December 8th, 1888 Issue Date: December 26th, 1893
In certain patents heretofore granted, I have shown and described a system of electrical power transmission, in which each motor contained two or more independent energizing circuits through which were caused to pass alternating currents, having in each circuit such a difference of phase that by their combined or... more >>
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511,560 - System of Electrical Power TransmissionCategory: Power Distribution Country: United States Application Date: December 8th, 1888 Issue Date: December 26th, 1893
In certain patents heretofore granted, I have shown and described a system of electrical power transmission in which each motor contained two or more independent energizing circuits through which were caused to pass alternating currents having in each circuit such difference of phase that by their combined or... more >>
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405,858 - Electro-Magnetic MotorCategory: Motors & Generators Country: United States Application Date: January 8th, 1889 Issue Date: June 25th, 1889
In order to define more clearly the relations which the motor forming the subject of my present application bears to others of the class to which it pertains, I will recapitulate briefly the forms of alternating-current motors invented by me and described more in detail in my prior patents and applications. Of these... more >>
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401,520 - Method of Operating Electro-Magnetic MotorsCategory: Motors & Generators Country: United States Application Date: February 18th, 1889 Issue Date: April 16th, 1889
As is well known, certain form of alternating-current machines have the property, when connected in circuit with an alternating-current generator, of running as a motor in synchronism therewith; but, while the the alternating current will run the motor after it has attained a rate of speed synchronous with that of the... more >>
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