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Patent No. 6681419

Forehead support apparatusĀ 

A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.

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Class 336/70 - With surge potential gradient modifying means


Subclass of Class 336 - Inductor devices
Definition: Subject matter wherein the inherent inductor capacitance
No. of patents: 43
Last issue date: 03/25/2008


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NumberTitleIssue Date
7346974Method for producing a conductor bar of transposed stranded conductors
A method for producing a conductor bar including transposed stranded conductors for a large, rotating electric machine. The method includes a first step of cabling a plurality of electrically insulated individual wires to form a plurality of identical stranded condu...
03/25/2008
7317372Air-core coil and process for fabricating the same
The present invention provides an air-core coil 21 wherein one conductor is wound into a spiral form to thereby form consecutively, axially of the coil, a plurality of unit turn portions (25, 26, 27) which are different from each other in inner periphe...
01/08/2008
7148779Pulse type transformer with increased coupling coefficient through configuration of plural primary windings
The present invention provides a low duty cycle, high current DC pulse type transformer with increased coupling coefficient between the primary and secondary windings by changing the proximity of the primary windings to the secondary windings through a plurality of ...
12/12/2006
7119646Apparatus and method for controlling the temperature of the core of a super-conducting transformer
An apparatus for controlling the temperature of a core of a transformer is provided that includes a core, a shield surrounding the core, a cast formed between the core and the shield, and tubing positioned on the shield. The cast directs heat from the core to the sh...
10/10/2006
7064644Winding for a transformer or a coil and method for winding
A winding for a transformer or a coil having a ribbon electrical conductor and an insulating material layer composed of ribbon insulation material wound jointly to form turns around a winding core. The individual turns of the winding have a predetermined winding ang...
06/20/2006
7019429Method of applying a tube member in a stator slot in a rotating electrical machine
A method for mounting a tube in a space having a shape corresponding to the shape of the tube. The tube is inserted into the space, pressurized with a hot pressure medium causing the tube to expand until the space is filled, then a cold pressure medium is substitute...
03/28/2006
6880228Method for manufacturing a three-phase transformer
A three-phase transformer and a method of its manufacture are presented. The transformer comprises a magnetic circuit and three coil blocks. The magnetic circuit comprises two spaced-apart, parallel, plate-like elements; and three spaced-apart, parallel column-like ...
04/19/2005
6693505Inductance element for power capacitor assembly
An inductive element is integrally configurable within a power capacitor assembly. The inductive element includes a plurality of electrically conductive sheets electrically connected in parallel, and which sheets are rolled and formed into a generally cyl...
02/17/2004
6188298Winding transient suppression technique
The present invention relates to a transformer having a conductive element spiraling along the length of an insulated wire of the coil. When formed into plurality of adjacent turns, the conductive element couples one of the plurality of turns with another...
02/13/2001
6177848High frequency snubber for transformers
The present invention relates to a transformer comprising a coil having an insulated wire formed into a plurality of turns defining a layer and a resistive element wrapped around the outer surface of the layer. The resistive element couples one of the plu...
01/23/2001
6069549Winding, particularly for a high-voltage ignition coil circuit
A process for producing a coil of wire formed at least partially of substantially frustoconical plies of wires laid against one another in a continuous fashion. Wire is first wound onto a core in a first direction over a first length L which is less than ...
05/30/2000
5844460Wound, solid state inductor
Wound, solid state inductors are provided by winding flexible plastic tape having electrically insulative and magnetic permeability properties. Such tape is sometimes referred to as magnetic tape. An electrically conductive layer is placed on at least one...
12/01/1998
4914413Transformer with layer-wound and random wound windings
An improved transformer for withstanding and decoupling high voltage input impulses has a layer wound primary with interlayer insulation also serving as a spacer between the primary winding and the secondary winding and also as a spacer between the primar...
04/03/1990
4750077Coil device
The distributed capacitance between coil turns in a coil device is increased, and a coil inductance and a low-pass filter are formed, whereby overvoltages and high frequency voltages are suppressed. The increased distributed capacitance is attained by ins...
06/07/1988
4663603Winding system for air-cooled transformers
A winding system for gas-cooled transformers, comprising windings disposed around a core; and at least one insulation torus, consisting of an insulating mass, said torus having embedded therein electrodes electrically connected to an adjoining winding for...
05/05/1987
4571570Winding for static induction apparatus
A winding for a static induction apparatus such as a transformer, a reactor and the like comprises a plurality of interleaved coils each formed by winding an electrically insulated strand conductor in a radial spiral. The coils are stacked axially and ele...
02/18/1986
4554523Winding for static induction apparatus
A winding for a static induction apparatus such as a transformer, a reactor and the like comprises a plurality of interleaved coils each formed by winding an electrically insulated strand conductor in a radial spiral. The coils are stacked axially and ele...
11/19/1985
4510475Disk coil winding of interwound single or double coils
Disk coil winding formed of interwound single or double coils wherein insulation of outer turns opposite inner and outer generated surfaces, respectively, of the winding is reinforced in comparison with normal insulation of conductors of the winding inclu...
04/09/1985
4492944Transformer winding
A transformer winding characterized by a plurality of electrically connected disc or pancake coils disposed around a core leg in which the inner and outer edges of adjacent coil pairs are radially offset, enabling the insulative members which surround the...
01/08/1985
4489298Insulating structure for magnetic coils
Electrical inductive apparatus characterized by pancake coils comprised of an outer layer and a plurality of inner layers formed by spirally winding an elongated conductor which conductor has a plurality of strands formed in a row of strands in each layer...
12/18/1984
4486730Disc coil winding of interwound single or double coils
A disc coil winding of interwound coils is formed of winding conductors covered with normal insulation, the winding having a radially inner and a radially outer surface. A plurality of the coils are disposed at an input to the winding, and have respective...
12/04/1984
4412199Regulating winding connected in series with a main winding of a transformer
The invention relates to a regulating winding for a transformer in which a plurality of helical current-carrying conductor loops are connected in series with each other, whereas a plurality of non-current-carrying helical potential control loops are provi...
10/25/1983
4318066Externally shielded disk windings for transformers
A disk wound transformer winding employing at least two external electrostatic shields extending axially along the outside of the disk winding for grading the impulse voltage within the winding. The inner external shield closest to the winding is connecte...
03/02/1982
4317096Electrostatic shielding of nonsequential disc windings in transformers
Transformer coils wound with disk winding sections nonsequentially arranged are provided with shields between the turns of mechanically adjacent sections to increase the series capacitance of the winding. The increased series capacitance of the winding al...
02/23/1982
4316169Windings for electrical inductive apparatus
Windings for electrical inductive apparatus are disclosed which include a plurality of first and second pairs of disc coil sections arranged in a stack. Each of the second pairs of disc coil sections are disposed between the first pairs of disc coil secti...
02/16/1982
4277770Regulating winding structure for transformer
A regulating winding for a high power transformer which includes a conductor bunch having a multiplicity of series-connected, parallel conductor loops, each loop comprising at least two parallel loop strands. The conductor bunch includes a number of radia...
07/07/1981
4270111Electrical inductive apparatus
An interleaved turn, high series capacitance winding for electrical inductive apparatus having four mutually interleaved, electrically conductive paths through a plurality of axially spaced pancake coils. The pancake coils have a like number of total cond...
05/26/1981
4243966Electrostatic shielding of nonsequential disc windings in transformers
Transformer coils wound with disk winding sections nonsequentially arranged are provided with shields between the turns of mechanically adjacent sections to increase the series capacitance of the winding. The increased series capacitance of the winding al...
01/06/1981
4209763Induction voltage transformer
An induction voltage transformer which includes an iron core positioned in a grounded metal tank, the iron core having one leg wrapped by an insulating body constructed as a capacitively controlled bushing, and a high voltage body arranged outside of a po...
06/24/1980
4174510RF transformer
There is provided an improved RF transformer having a single-turn secondary of cylindrical shape and a coiled encapsulated primary contained within the secondary. The coil is tapered so that the narrowest separation between the primary and the secondary i...
11/13/1979
4153891Transient voltage distribution improving line shield for layer wound power transformer
An improved electrostatic shield assembly for power transformer windings provides a decreased shield to winding insulation spacing. The decreased spacing substantially improves the capacitive coupling between the windings and shield, reducing transient vo...
05/08/1979
4084144High voltage winding comprising several component coils for voltage transformers
A high-voltage winding for use with voltage transformers wherein the winding is provided with a plurality of component coils of decreasing diameter arranged one after the other along an axial direction and with a number of connecting elements for connecti...
04/11/1978
4083026Arrangement with inductive voltage transformers
The invention is an arrangement of inductive voltage transformers for installation in a completely insulated high-voltage switching installation comprising a metal encapsulation and several high-voltage conductors. In accord with the invention each of the...
04/04/1978
4079324Pulse transformer, particularly for low-impedance modulators
A transformer for high-power pulses, inserted between a plurality of parallel-connected low-impedance power-modulator modules and a load, has a composite primary winding formed from an outer and an inner prismatic sheet-metal layer of five and three turns...
03/14/1978
4055825Voltage transformer for high voltage
A voltage transformer for use with high voltages. The transformer includes an insulating body in which is disposed a high-potential winding and a bushing laterally joined to the insulating body. In accord with the invention, the transformer is further pro...
10/25/1977
4042900Electrostatic shielding of disc windings
An electrostatic shielding arrangement for improving the initial distribution of voltage which in turn reduces the insulation stresses on disc-wound coils resulting from the application of impulse or steep wave-front voltages to such coils. Floating elect...
08/16/1977
4031459Inductive voltage transformer for a high-voltage metal-clad switch-gear installation
An inductive voltage transformer for a high-voltage metal-clad switch-gear installation fully insulated by means of an insulating gas, which includes a pressure vessel flangedly connected to the metallic capsule of the switch-gear installation and has a h...
06/21/1977
4017815Impulse voltage distribution improving partial-turn electrostatic shields for disc windings
A disc wound winding formed of a plurality of spirally wound, disc coil sections and having series capacitance increasing electrostatic shields in less than all of said sections, incorporates partial-turn electrostatic shields in disc coil sections adjace...
04/12/1977
4002976Voltage sensing device for use at high voltage
A compact voltage sensing device for connection to an alternating current high voltage circuit is imbedded within an organic polymeric insulator body that is formed to provide both mechanism support and "line to ground" insulation for a conductor or compo...
01/11/1977
3996544Cylindrical winding for induction electrical apparatus
A multi-layer winding comprising cylindrically-wound conductors and having different diameters are arranged concentrically. The layer windings are connected in series from inside to outside. Each layer winding has a layer insulator arranged on the inside ...
12/07/1976
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