Loading...

Nikola Tesla Patents from United States

Alt

U.S. Patent 1,655,114 - Apparatus for Aerial Transportation

Patent added 3/1/2015
The invention consists of a new type of flying machine, designated "helicopter-plane", which may be raised and lowered vertically and driven horizontally by the same propelling devices and comprises: a prime mover of improved design and an airscrew, both especially adapted for the purpose, means for tilting the...

Alt

U.S. Patent 1,655,113 - Method of Aerial Transportation

Patent added 3/1/2015
The utility of the aeroplane as a means of transport is materially lessened and its commercial introduction greatly hampered owing to the inherent inability of the mechanism to readily rise and alight, which is an unavoidable consequence of the fact that the required lifting force can only be produced by a more or...

Alt

U.S. Patent 1,402,025 - Frequency-Meter

Patent added 3/1/2015
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...
Alt

U.S. Patent 1,365,547 - Flow-Meter

Patent added 3/1/2015
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...

Alt

U.S. Patent 1,314,718 - Ship's Log

Patent added 3/1/2015
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...

Alt

U.S. Patent 1,266,175 - Lightning-Protector

Patent added 3/1/2015
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...
Alt

U.S. Patent 1,329,559 - Valvular Conduit

Patent added 3/1/2015
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...

Alt

U.S. Patent 1,061,142 - Fluid Propulsion

Patent added 3/1/2015
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...

Alt

U.S. Patent 1,119,732 - Apparatus for Transmitting Electrical Energy

Patent added 3/1/2015
In endeavoring to adapt currents or discharges of very high tension to various valuable uses, as the distribution of energy through wires from central plants to distant places of consumption, or the transmission of powerful disturbances to great distances, through the natural or non-artificial media. I have...
Alt

U.S. Patent 685,958 - Method of Utilizing of Radiant Energy

Patent added 3/1/2015
It is well known that certain radiations - such as those of ultra-violet light, cathodic, Roentgen rays, or the like - possess the property of charging and discharging conductors of electricity, the discharge being particularly noticeable when the conductor upon which the rays impinge is negatively electrified....