| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Transformer for use with current-rectifying apparatus. | US1908426311 | 1908-04-10 | US1123248A | 1915-01-05 | CONRAD FRANK |
| 82 | Electrical transformer. | US1906304114 | 1906-03-03 | US889931A | 1908-06-09 | JOHANNESEN SVEND E |
| 83 | Electric potential differentiator | US391437D | US391437A | 1888-10-23 | ||
| 84 | Compliant motor driven variable electrical device | US11072464 | 2005-03-07 | US07339298B2 | 2008-03-04 | John J. Salinardi; James L. Rosen |
| A motor driven electrical device includes: a variable electrical device having a rotational variable control; a first support plate positioned above the variable electrical device; a motor support plate pliably attached to the first support plate using a pliable separator positioned between the motor support plate and the upper support; a motor mounted on the motor support plate, the motor having an output shaft; an interface/control unit coupling the output shaft to the rotational variable control; and stanchions attached to the first support plate for holding the first support plate in a fixed relation with respect to the variable electrical device. | ||||||
| 85 | Variable inductor | US666990 | 1991-03-11 | US5153548A | 1992-10-06 | Jean-Luc Hourtane; Jacques Guillard |
| 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 establishing a connection with the inductor section and being provided with means for connection to the outlet electrode, the inductor being wherein the moving contact is disposed in the proximity of the inductive section, with the connection therebetween is established by means of an electric arc. | ||||||
| 86 | Variable inductor with carriage for multiple trolley wheels | US364291 | 1982-04-01 | US4412200A | 1983-10-25 | Jack C. Thornton; Randy G. Russell |
| 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-conductive. A further part of the traveling carriage assembly electrically interconnects a conductive trolley wheel with an electrical contact situated remote from one end of the coil. Multiple conductive wheels are electrically interconnected. | ||||||
| 87 | Rotary potentiometer with speed reduction gearing | US846630 | 1977-10-28 | USRE29860E | 1978-12-12 | Larkin B. Scott |
| .Iadd.A rotary potentiometer with speed reduction gearing. A multi-tap closed loop distributed impedance is coupled by a mechanical configuration including a shaft to selected taps on an autotransformer. The mechanical coupling configuration permits the output from the wiper on the closed loop distributed impedance to change as a function of shaft position and to jump from one end of the autotransformer to the other while the shaft is continuously rotated in a given direction. .Iaddend. | ||||||
| 88 | High power variable autotransformer | US41969473 | 1973-11-28 | US3887889A | 1975-06-03 | KARLOV FRANK J; SIDOREWICZ LEONIDAS; REDFIELD CHARLES L; EVANS ROBERT |
| An autotransformer is disclosed for a power supply system for an x-ray generating apparatus. The autotransformer includes at least two interconnectable windings with at least one inner winding mounted within an outer winding. On three phase equipment, three such pair are provided on each transformer core. Taps at fixed intervals along the windings are brought out from the windings for external electrical connections. The inner windings are interconnected, with respect to the outer winding, in a lowvoltage input connection, where the tap connections are mostly in parallel, to a high-voltage input connection, where the tap connections are mostly in series. The outer winding is wound on a tube at a constant pitch and is made accessible for receiving a contact mechanism at any point along the entire length of winding. The contact mechanism has a metal contact movably mounted to contact the winding only at the time the power is being used. A solenoid and rod are utilized to actuate the metal contact. The entire contact mechanism is mounted on a carriage driven by a motor-driven lead screw having the same pitch as the outer winding of the autotransformer. The drive system functions to position the metal contact approximately over the proper turn of the outer winding for providing the desired output voltage. An indexing mechanism is provided to center the metal contact exactly over the selected turn. The indexing mechanism comprises a left-hand/right-hand 180* helical barrel cam mounted on the lead screw. A cam follower is provided to engage either the lefthand or right-hand helix to rotate the cam and lead screw to the 180* or absolute locking position. Since the lead screw has the same pitch as the outer winding, the center or locked position of the lead screw corresponds to the center position of the outer winding.
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| 89 | Method of manufacture | US3656378D | 1970-12-17 | US3656378A | 1972-04-18 | DAVIS ARIEL R |
| A tubular aluminum member is extruded in a rectangular shape and cut to a given length. The four walls of the tubular member are successively cut by a circular saw to form a portion of the tubular member into a generally spiral shape winding with terminal portions at each end. The member is treated to form an insulating layer on the surfaces of the member including the facing sides of the winding to form an inductive winding for passing current. The winding may be compressed and one set of edges treated for engagement by current taps to produce a variable voltage and current device.
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| 90 | Ac voltage control apparatus | US3614595D | 1970-01-29 | US3614595A | 1971-10-19 | PAULDEN ROBERT STEWART |
| Alternating current voltage control apparatus comprises a coarse and a fine voltage regulator feeding the primary winding of a buck/boost transformer the secondary of which is connected in series with a load. The coarse voltage regulator has two movable contacts capable of passing one another, and has the ends of the winding connected to the two poles of an alternating current supply of the same frequency as that connected to the load. The fine regulator is connected between one contact on the coarse regulator and one pole of the supply and itself carries a movable contact. The primary of the buck/boost transformer is connected between the other movable contact on the coarse voltage regulator and the movable contact on the fine regulator.
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| 91 | On-load voltage regulators | US3581189D | 1969-07-02 | US3581189A | 1971-05-25 | SINET MAURICE |
| An on-load voltage regulator comprises a transformer having a magnetic core, a primary winding on the core, and a rotatable secondary winding in the form of a bare wire conductor coiled helically around the core. A brush cooperates with the second winding and is movable axially but not angularly relative to the secondary winding. A slip ring connector at one end of the secondary winding has fixed elements and an element which bridges the fixed elements and which is connected to the end of the secondary winding and is rotatable therewith. An inverse potential is applied between the fixed elements for the purpose of maintaining the potential between the fixed elements at a zero value in use when they are bridged by the rotatable element of the slip ring connector.
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| 92 | Method of manufacturing adjustable voltage autotransformer | US3529348D | 1968-09-23 | US3529348A | 1970-09-22 | KUCHARSKI LOUIS A |
| 93 | Adjustable sliding brush transformer and method of producing a brush track therefor | US3478290D | 1967-11-16 | US3478290A | 1969-11-11 | PROXMIRE HARRY J |
| 94 | Variable transformer having terminals held by core housing | US3436709D | 1967-05-22 | US3436709A | 1969-04-01 | SCHAPIRA WILLIAM W; BERKELHAMER LOUIS H |
| 95 | Variable contact arrangement for electric coils | US3435396D | 1966-04-28 | US3435396A | 1969-03-25 | POULTON GEORGE W |
| 96 | Electrical coil with a tap changing means | US62721267 | 1967-03-30 | US3399364A | 1968-08-27 | BARBER ALFRED W |
| 97 | Devices of moving connections between two fixed electric windings | US56677866 | 1966-07-21 | US3376535A | 1968-04-02 | PAUL GOUT |
| 98 | Toroidal transformer construction and method of constructing same | US58202466 | 1966-09-26 | US3374452A | 1968-03-19 | JUDD WINSTON R |
| 99 | Dynamic characteristic control for direct current arcs and apparatus therefor | US5969860 | 1960-09-30 | US3335259A | 1967-08-08 | MULDER ALLAN C; RASMUSEN REIDAR P C |
| 100 | Variable transformer with winding holding core housing | US45697865 | 1965-05-19 | US3316517A | 1967-04-25 | ELLIN FREDRICK I |
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