Tesla Patents
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1,061,142 - Fluid PropulsionCategory: Turbo Machinery Country: United States Application Date: October 21st, 1909 Issue Date: May 6th, 1913 
In the practical application of mechanical power based on the use of a fluid as the vehicle of energy, it has been demonstrated that, in order to attain the highest economy, the changes in velocity and direction of the movement of the fluid should be as gradual as possible. In the present forms of such apparatus more... more >>
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1,061,206 - TurbineCategory: Turbo Machinery Country: United States Application Date: October 21st, 1909 Issue Date: May 6th, 1913
In the practical application of mechanical power, based on the use of fluids as the vehicle of energy, it has been demonstrated that, in order to attain the highest economy, the changes in the velocity and direction of movement of the fluid should be as gradual as possible. In the forms of apparatus heretofore devised... more >>
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1,113,716 - FountainCategory: Turbo Machinery Country: United States Application Date: October 28th, 1913 Issue Date: October 13th, 1914
It has been customary heretofore in fountains and aquarian displays, to project spouts, jets, or sprays of water from suitable fixtures, chiefly for decorative and beautifying purposes. Invariably, the quantity of the issuing fluid was small and the pleasing impression on the eye was solely the result of the more or... more >>
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1,209,359 - Speed-IndicatorCategory: Turbo Machinery Country: United States Application Date: May 29th, 1914 Issue Date: December 19th, 1916
In the provision of speed indicators, that give direct readings of rate of motion,—for example shaft speeds in terms of revolutions per minute or vehicle speeds in miles per hour—it is obviously important that the instrument be simple, inexpensive and durable, and that its indications be correct throughout... more >>
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1,329,559 - Valvular ConduitCategory: Turbo Machinery Country: United States Application Date: February 21st, 1916 Issue Date: February 3rd, 1920
In most of the machinery universally employed for the development, transmission and transformation of mechanical energy, fluid impulses are made to pass, more or less freely, through suitable channels or conduits in one direction while their return is effectively checked or entirely prevented. This function is... more >>
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1,266,175 - Lightning-ProtectorCategory: Miscellaneous Country: United States Application Date: May 6th, 1916 Issue Date: May 14th, 1918
The object of the present invention is to provide lightning protectors of a novel and improved design strictly in conformity with the true character of the phenomenon, more efficient in action, and far more dependable in safe-guarding life and property, than those heretofore employed. To an understanding of the nature... more >>
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1,274,816 - Speed IndicatorCategory: Turbo Machinery Country: United States Application Date: December 18th, 1916 Issue Date: August 6th, 1918
Among the desiderata of speedometer construction are these: that the torque exerted upon the secondary, or indication-giving, element shall be linearly proportional to the speed of the primary member rather than to the square of the speed (as instanced in centrifugal speedometers); that the torsional effect at low... more >>
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1,314,718 - Ship's LogCategory: Turbo Machinery Country: United States Application Date: December 18th, 1916 Issue Date: September 2nd, 1919
My invention provides a ship's log of novel and advantageous construction and operation, designed to give instantaneous rate-readings, as in knots, or miles per hour. The customary log is trailed astern, twisting the flexible connector that drives a revolution-counter on the vessel, and many disadvantages of such... more >>
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1,365,547 - Flow-MeterCategory: Turbo Machinery Country: United States Application Date: December 18th, 1916 Issue Date: January 11th, 1921
My invention relates to meters for measurement of velocity or quantity of fluid flow. Its chief object is to provide a novel structure, simple, inexpensive and efficient, directly applicable to a conduit through which the fluid flows, and arranged to give instantaneous readings in terms of velocity, or quantity. In... more >>
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1,402,025 - Frequency-MeterCategory: Meters Country: United States Application Date: December 18th, 1916 Issue Date: January 3rd, 1922
The devices commonly used at present for this purpose and designated "frequency meters" generally consist of reeds or bars tuned to respond to impulses of definite periods, or a direct current dynamo coupled to the alternating generator or frequency controller and connected with an instrument, of voltmeter... more >>
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