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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 7362203 | Multi-tap microelectromechanical inductor An apparatus, system, method, and article for a multi-tap microelectromechanical inductor are described. The apparatus may include an inductor formed on a substrate, a switching mechanism contacting the inductor to vary inductance of said inductor; and a disconnect ... | 04/22/2008 |
| 7310038 | Electromechanical device for selecting coil voltage and locking the coil in place A system for selecting coil voltage in an electrical device comprises a housing and a coil in the housing having a plurality of windings. Each winding has a pair of pins. A slider supports a plurality of moveable contacts and is moveably mounted in the housing proxi... | 12/18/2007 |
| 7271692 | Slider for selecting coil voltage and locking the coil in place A system for selecting coil voltage in an electrical device comprises a housing and a coil in the housing having a plurality of windings. Each winding has a pair of pins. A slider supports a plurality of moveable contacts and is moveably mounted in the housing proxi... | 09/18/2007 |
| 7148783 | Microwave tunable inductor and associated methods The inductor, preferably a microwave tunable inductor, includes first and second wires twisted together to define a double helix having a first end and second end with a plurality of twists therebetween. First and second terminals are at the first end of the double ... | 12/12/2006 |
| 5175526 | Inductance device, particularly for short waves The invention concerns an inductance device formed on the basis of an asymmetrical line. This inductance device includes a plane conductor, preferably cylindrical, a linear conductor extending along and close to the plane conductor and having one end shor... | 12/29/1992 |
| 5153548 | Variable inductor A variable inductor provided with an inlet electrode and an outlet electrode, and including an inductive section having one end connected to the inlet electrode, electrically conductive moving equipment being provided with a moving contact for establishin... | 10/06/1992 |
| 5057809 | Variable inductance RF coil assembly A variable inductance RF coil assembly including an air-core, high-voltage coil, a printed circuit board installed inside of the coil, the circuit board carrying a plurality of switch contacts corresponding in location and in number to the turns of the ai... | 10/15/1991 |
| 4986160 | Burst firing electromagnetic launcher utilizing variable inductance coils An electromagnetic projectile launching system is provided with a pair of conductive projectile launching rails which are connected to a high current inductive power source. Current from an inductive energy storage coil is switched to the launcher rails t... | 01/22/1991 |
| 4951168 | Transformers having overload protection A 60 VA transformer is described. A recycling circuit breaker mounted on and connected in series with the secondary winding of the transformer preserves the integrity of the transformer and permits its continued use after a short circuit. A thermal fuse m... | 08/21/1990 |
| 4678986 | Electric transformer with selectively energized modular circuits An electric transformer for supplying an adjustable electric magnitude, especially for regulating purposes, includes several modules having therebetween a binary progression relationship with respect to their power handling capabilities. Each module has a... | 07/07/1987 |
| 4634958 | Transformer utilizing selectively loaded reactance to control power transfer Apparatus for controlling power transfer in an electrical induction device uses a controlled reactance to regulate the power transferred from an alternating current power source to a load without distorting or degrading the transferred power waveshape. Th... | 01/06/1987 |
| 4441092 | Variable inductance with variable pickoff and variable flux medium permeability A variable inductor includes a coil, a moveable contactor, and moveable magnetic material caused to move proximate the coil and simultaneously with the contactor. The contactor establishes first and second portions of the coil and, relative to the conditi... | 04/03/1984 |
| 4418570 | Ice thickness inductor probe A method and apparatus for measuring the thickness of an ice sheet floating on a body of sea water is disclosed. The electrical inductance of a coil embedded in an ice sheet is measured. This inductance is solely dependent on the geometrical factors of th... | 12/06/1983 |
| 4412200 | Variable inductor with carriage for multiple trolley wheels As part of a moveable carriage assembly, a plurality of trolley wheels are capable of being driven, in worm-gear fashion, along a coil which is rotatable about its axis. One end of the coil is conductive and the other end of the coil is preferably non-con... | 10/25/1983 |
| 4408177 | Variable inductor having extended useable frequency range A plurality of moveable contactors may travel along a rotating coil, one end of which is conductive and the other end of which is non-conductive. Two or more electrically interconnected moveable contactors effect a shorting across unused electrical turns ... | 10/04/1983 |
| 4386333 | Universal electrical connection apparatus Different line-cord sets connect an electrical device to different supply voltages, assuring that the supply voltage matches the device. Each line-cord set has a uniquely keyed socket and a wall plug. A device receptacle receives the line-cord's keyed soc... | 05/31/1983 |
| 4291284 | Antenna coupler A high power, high frequency radio transmitter is connected to an antenna through an adjustable impedance coupling device which comprises a helical coil having a number of straight-sided triangular turns. Remotely operable, pneumatic cylinders are mounted... | 09/22/1981 |
| 4063206 | Tunable electrical component An electrical component such as a base loading coil assembly for a fixed length mobile radio antenna is disclosed featuring an electrical coil having a series of windings and an adjustable shorting screw disposed in line with the longitudinal axis of the ... | 12/13/1977 |
| 4052900 | Transducers A transducer having a primary coil and at least one secondary coil wound on a hollow support with a number of electrically conducted links axially spaced along the secondary coil with the links connecting spaced turns of the secondary coil so that the tra... | 10/11/1977 |
| 3958196 | Coil tuning apparatus The method of and apparatus for changing the inductance of a high power air core coil through the process of selectively shorting out predetermined numbers of turns. The apparatus comprises a conductive belt which is positioned interior the coil whereby t... | 05/18/1976 |
