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Class 310/236 - Cylindrical or drum


Subclass of Class 310 - Electrical generator or motor structure
Definition: Subject matter relating to cylindrical or drum type commutators.
No. of patents: 114
Last issue date: 10/13/2009


1      
NumberTitleIssue Date
7602094Rotary electric machine and related commutator
A rotary electric machine and a commutator for the rotary electric machine are disclosed wherein the commutator includes an insulating member carrying thereon a plurality of commutator segments each having a brush contact surface. Each commutator segment has an embe...
10/13/2009
7375452Commutator for an electrical machine
A commutator for an electrical machine, in particular for an electric motor for actuating drives in motor vehicles, has a commutator body that supports commutator laminations. To reduce the electromagnetic radiation, emitted into the environment as interfering radia...
05/20/2008
7352073Ocean wave energy converter having an improved generator and ballast control
The ocean wave energy converter uniquely includes a generator with a rotating inner rotor surrounded by a counter-rotating outer rotor for generating electricity. A reciprocating drive rod drives the inner rotor on the downstroke of the drive rod and the outer rotor...
04/01/2008
7352098Insulator
An insulator includes a main body portion for axially covering one side face of a core that includes a plurality of teeth portions extending in a radial direction, and a plurality of extending portions extending from the main body portion in an axis direction of the...
04/01/2008
RE39974Management of contact spots between an electrical brush and substrate
Devices for the management of contact spots, partly consisting of surface plating, partly of surface polishing and partly of substrate surface profiling in the form of parallel grooves stretched out in the direction of sliding and/or of isolated asperities. The mana...
01/01/2008
7312949Base deck with overmolded elastomeric and rigid structural components
A base deck for a data storage device is preferably formed from a stamped, or fine blanked metallic platform portion, which supports an over-mold portion. The over-mold portion is a combination of elastomeric components and rigid structural components. In addition t...
12/25/2007
7256845Cholesteric liquid crystal (CLC) display device and method for manufacturing the same
A liquid crystal display device having a cholesteric liquid crystal (CLC) color filter comprises a first substrate, a circular polarizer on the first substrate, a cholesteric liquid crystal (CLC) color filter on the circular polarizer, a first electrode on the chole...
08/14/2007
7196440Electric manual machine tool driven by an electric motor
A hand power tool that is driven via an electric motor (20), the electric motor (20) having a commutator (28) which is formed of disklike annular segments or laminations (32), is made more secure against contact spark development by provi...
03/27/2007
7084547Motor, fuel pump, commutator, and method for manufacturing a commutator
A commutator includes six segments disposed in the direction of rotation, and is attached to one axial end of an armature. By the commutator rotating together with the armature, each of the segments successively contacts a brush. Each of the segments is electrically...
08/01/2006
7057325Carbon segment commutator
A commutator comprises a plurality of commutator terminals each having a contact part 12 and a separate terminal part 13, first and second supports 10 and 11, respectively, of insulating material for supporting the contact parts and the t...
06/06/2006
7045927Commutator
A commutator for commutator motors has a glass carrier body (11), and a plurality of electrically conductive segments (16) which are arranged at an outer circumferential surface (15) of the carrier body (11). ...
05/16/2006
7043822Method of manufacturing commutator of rotary electric machine
A method of manufacturing a commutator of a rotary electric machine includes a step of forming a first unitary material having nail portions, a step of forming a second unitary material for the commutator segments, a step of fixing the first unitary material and the...
05/16/2006
7009323Robust commutator bar anchoring configuration with dove-tailed features
A commutator bar (10) includes a body and first and second anchors disposed in spaced relation with each anchor and coupled to a proximal end of the body. A free end of the first anchor (13) extends in a direction towards the proximal end H of the body...
03/07/2006
7002269Slip ring unit with a printed circuit board
A device for transferring electric currents that includes a slip ring unit that has a rotor with connecting wires and a stator and a printed circuit board fastened to the rotor, wherein the printed circuit board includes connectors in electrical contact with the con...
02/21/2006
6958564Armature with unitary coil and commutator
An armature for an electromotive device having a unitary coil and armature is disclosed. The armature may include a coil having inner and outer winding portions separated by an insulator, each of the winding portions comprising a plurality of sheet metal conductors,...
10/25/2005
6933651Commutating device for small-sized motor and manufacturing method therefor
In the present invention, by selecting an optimum combination of plating layer materials or materials, not only the manufacturing cost of motor brush is reduced but also a plating layer having excellent characteristics is formed in a narrow width on the surface of b...
08/23/2005
6927521Commutator and electric rotary device having the same
The commutator is capable of reducing contact resistance between the brush and a commutator, improving efficiency of an electric rotary device and restricting exhaustion of the commutator. The commutator comprises: a plurality of commutating pieces having outer face...
08/09/2005
6919661Alternator-starter for motor vehicle with mechanical static converter
The reversible multiphase rotary machine includes a device (3) for supplying current to the windings (12-14) of the stator, which is produced in the form of a mechanical inverter (2) able to be coupled to the aforementioned shaft of the machine ...
07/19/2005
6903483Motor
A motor has twenty-four segments and a commutator. Each of eight short-circuit members short-circuits three of the segments with one another. Each short-circuit member includes an annular base portion and three arms radially extending from the base portion. Each arm...
06/07/2005
6888285Dynamo-electric machine and fan motor for vehicle
An electric rotating machine and a fan motor for vehicle are obtained, wherein variation width of current waveform resulting from occurrence of coils in a short circuit state is narrowed to reduce vibration and noise. A commutator 26 of the fan motor for vehi...
05/03/2005
6844654Drum commutator and method for producing the same
The invention relates to a drum commutator comprising a cylinder-shaped support base (1) produced from an insulating pressed material, a plurality of metal conductor segments (3) with terminal lugs (8) disposed thereon and an equal amount of car...
01/18/2005
6836049Commutator having short-circuiting parts, motor having such a commutator and method for manufacturing such a commutator
Commutator segments are divided into a plurality of groups, each of which includes two or more of the commutator segments. Generally planar short-circuiting parts are respectively provided to the groups of the commutator segments and are located radially inward of t...
12/28/2004
6753635Management of contact spots between an electrical brush and substrate
Devices for the management of contact spots, partly consisting of surface plating, partly of surface polishing and partly of substrate surface profiling in the form of parallel grooves stretched out in the direction of sliding and/or of isolated asperities. The mana...
06/22/2004
6744169Direct current motor having commutator segments firmly embedded in insulation bond
A direct current motor includes a stator generating a magnetic field therein and a rotor having an armature and rotating inside the stator. A commutator for supplying electric current to the armature is connected to the rotor. The commutator is composed of plural co...
06/01/2004
6731040Brush motor for electric power steering system
A brush motor for an electric power steering system comprises a four-pole field portion 3, an armature 4 having windings 9 wound around a core 5 with 22 slots 8 to constitute a lap winding, hooks 12 which are formed on one e...
05/04/2004
6720701Method of manufacturing commutator, apparatus for manufacturing commutator, and commutator
A method of manufacturing a commutator includes the steps of punching a commutator forming plate out of a plate member having a plurality of projections formed at predetermined intervals in such a way that the projections extend in parallel to one another, forming t...
04/13/2004
6713931Cylindrical commutator securely fixed to mold resin
A cylindrical commutator is provided with a plurality of segments arranged at equal intervals around an axis, each of which is provided with a groove on an inner surface thereof and one or more anchors extending from edges of the groove. The grooves and the anchors ...
03/30/2004
6667564Mechanically-commutated DC motor
A mechanically-commutated DC motor has a mechanical commutation system and an "inside-out" configuration, in which the stator assembly comprises the windings and the rotor assembly comprises the permanent magnet. The motor includes a rotor assembly, a sta...
12/23/2003
6657354Dynamo-electric machine having commutator and manufacturing method thereof
A dynamo-electric machine includes a commutator secured around a rotatable shaft and a plurality of carbon brushes placed in sliding contact with the commutator. The commutator has a sliding contact surface placed in sliding contact with the carbon brushe...
12/02/2003
6611077Motor having a commutator
A motor is provided with a riser member having a base portion fixed to the surface of the commutator of a rotor, a first turned-back portion bent so as to hook the winding of the motor, and a second turned-back portion provided on the side opposite to the...
08/26/2003
6490780Method for making a commutator
A method for making a commutator comprising steps of arranging at least one pair of commutator members to be spaced apart from each other, and molding a product by injecting an insulating resin; shaping the product to the product having a real circular se...
12/10/2002
6489703Commutator forming plate, commutator, motor with commutator and manufacturing the same
In a commutator forming plate to be rounded into a cylinder which is to be cut at constant angular intervals to form a plurality of commutator segments after being filled with insulating material, a plurality of lands rising at given intervals on one surf...
12/03/2002
6448683Method of producing a rotor
In rotors for electric motors, it is usual to fix the commutator on the rotor shaft by means of a press fit. In the present invention, the rotor shaft, with the rotor core fixed thereon, is electronically coated with an epoxy layer on opposite portions of...
09/10/2002
6369484Commutator of rotary electric machine and method of manufacturing the same
In a commutator of a rotary electric machine having a plurality of commutator segments and a cylindrical insulation body, each of the commutator segments has a pair of inner claws disposed at axially central portion of an inner surface of the commutator s...
04/09/2002
6332263Method of producing a rotor for a commutator machine using an angled sonotrode
A rotor for a commutator machine, having a rotor shaft, a rotor body containing a rotor winding, and a commutator, which has an insulation material body non-rotatably supported on the rotor shaft and has a number of commutator lamellas that are disposed o...
12/25/2001
6307296Commutator
When a commutator is slipped onto a rotor shaft that is provided with viscous epoxy, a bead of epoxy forms on the connecting end face of the commutator core and can hinder the process of winding the rotor. The novel commutator therefore has a receiving bore (2...
10/23/2001
6239531Apparatus and method of mechanically commutating a brushless motor
A commutation assembly mechanically commutates an electric motor. It includes a plurality of distinct electrical contacts forming a circular surface around a motor shaft. At least some of the electrical contacts are electrically coupled to distinct coils ...
05/29/2001
6236136Methods and results of manufacturing commutators
Addressed herein are commutators and methods of manufacturing them. The methods permit the carbonaceous material and core of a commutator to be molded simultaneously, rather than in a two-step process, and can eliminate one of two curing procedures used i...
05/22/2001
6222298Carbon commutator and method for producing the same
The carbon commutator of the present invention comprises a plurality of segments having ends which are sliding members on a brush and the other ends to which conductive terminal members are attached, wherein the segments are arranged in a circumferential ...
04/24/2001
6181046Dynamo-electric machine with commutator assembly
A commutator assembly for an electric motor includes a commutator having commutator segments arranged circumferentially, brushes contacting the commutator segments, and an equalizer connecting commutator segments so they have the same electric potential, ...
01/30/2001
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