Multi-phase flat-type PM stepping motor and driving circuit thereof
An object of the present invention is to solve the above described problems of the conventional motor and to provide a high-resolution, high-accuracy multi-phase flat-type PM stepping motor with emplo... Read More
Inventors: Isozaki, Kouki; Tsuda, Yuichi; Rokunohe, Junji;, Assignee: Japan Servo Co., Ltd. (Tokyo-to, JP) |
Electric rotating machine and manufacturing process thereof
To accomplish the foregoing objects, an electric rotating machine according to the present invention includes a rotor having a rotor core and a rotor coil magnetizing the rotor core, and in which the ... Read More
Inventors: Maeda, Naohide; Asao, Yoshihito; Fujita, Masahiko;, Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP) |
Brushless motor having lubrication system for upper and lower bearings
Accordingly, a first object of the present invention is to provide a brushless motor with a simple structure that facilitates the mounting of bearings and allows lubricating oil to be maintained at a ... Read More
Inventors: Ohi, Shinichi; Umegaki, Fuhito; Takemasa, Masami; Haraguchi, Tatsuo; Gunji, Yoshihide; Ohsawa, Hiroshi;, Assignee: Zexel Corporation (Tokyo, JP) |
Brush gasket
Accordingly, one object of the invention is to provide a novel brush gasket which, on the one hand, takes into account the thermal and rotor-dynamic conditions and those stipulated as a consequence of... Read More
Inventors: Beeck, Alexander;, Assignee: Asea Brown Boveri AG (Baden, CH) |
Rotor for electric motor and method of making the same
Therefore, an object of the present invention is to provide a rotor for the electric motor whose size, weight and cost can be reduced, which can improve the manufacturing efficiency and can readily be... Read More
Inventors: Shiga, Tsuyoshi; Endou, Masami;, Assignee: Kabushiki Kaisha Toshiba (Tokyo, JP) |
Machine device having superconducting winding and thermosiphon cooling of winding
An aspect of the present invention is to design a machine device having the features mentioned initially such that at least the accumulation of refrigerant, as mentioned, in the central rotor cavity o... Read More
Inventors: Frank, Michael; Kuhn, Adolf; van Hasselt, Peter;, Assignee: Siemens Aktiengesellschaft (Munich, DE) |
Air-cooled motor
An object of the invention is therefore to provide an air-cooled motor which solves the problems of the conventional technique and of which a supply section (rotary joint) to a through hole and the pe... Read More
Inventors: Katsuzawa, Yukio; Masuya, Michi; Nakazawa, Yasuyuki; Oohara, Taku;, Assignee: Fanuc Ltd. (Yamanashi, JP) |
Two speed electric motor with link wound dual-commutator and dual-armature winding
An object of the invention is to fulfill the need referred to above. In accordance with the principles of the present invention, this objective is achieved by providing a permanent magnet D.C. electri... Read More
Inventors: Simofi-Ilyes, Attila; Lakerdas, Andrew; Volkening, Martin; Smorowski, Stefan;, Assignee: Siemens VDO Automotive, Inc. (Chatham, CA) |
Heat sink assembly for a central processing unit of a computer
The present invention provides a heat sink assembly for a computer chip which includes a baseplate with a bottom side secured to a computer chip and a top side to which a fan is removably secured, a c... Read More
Inventors: Wang, Michael;, Assignee: Tennmax Trading Corp. (TW) |
Auxiliary electrical component utilized on the exterior of an electrical device that can be removed when the electrical device is powered
A removable auxiliary electrical component for an electrical device that can be removed when the electrical device is powered is disclosed. The removable axillary electrical component includes a modul... Read More
Inventors: Bull, William H.; McNally, Mark P.;, Assignee: Apple Computer, Inc. (Cupertino, CA) |
Retainer for a BGA fan
The main object of the present invention is to provide a retainer for a BGA fan. The retainer has means for respectively fixing a pair of frame members as well as a fan securely on a substrate. The me... Read More
Inventors: Wang, Michael;, Assignee: Tennmax Trading Corp. (Taipei Hsien, TW) |
Lead frame and distributing part using same
The invention was made in these situations, and an object thereof is to provide a lead frame which can reduce the loss of material at the time of production and the generation of strain due to thermal... Read More
Inventors: Kabasawa, Akira; Takahashi, Kazunari; Okamura, Akihiro;, Assignee: Honda Giken Kogyo Kabushiki Kaisha (Tokyo, JP) |
Motor controller for application in a motor controller network
A motor controller according to the present invention incorporates all of the advantages of RS-485, yet allows the user to interface with the controller through RS-232 without a separate RS-232 to RS-... Read More
Inventors: Ellis, George Henry; Lee, Gregory Robert;, Assignee: Kollmorgen Corporation (Waltham, MA) |
Contactless electro-mechanical actuator with coupled electronic motor commutation and output position sensors
OF THE INVENTION For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will... Read More
Inventors: Eric, Seger; Gary, Frederick L.;, Assignee: BVR Technologies Company (Rockford, IL) |
Self-retained RFI suppression choke for electric motor
An object of the present invention is to fulfill the needs referred to above. In accordance with the principles of the present invention, this objective is obtained by providing a choke for suppressin... Read More
Inventors: Tyshchuk, Sergey; Seguin, John; Gubbels, Alex;, Assignee: Siemens VDO Automotive Inc. (Mississauga, CA) |
In-hub spindle motor with separate fluid dynamic bearings
Thus, it is an object of the present invention to create an improved hydrodynamic bearing which is relatively insensitive to changes in load and rotational speed. Yet another objective of the present ... Read More
Inventors: Grantz, Alan Lyndon; Parsoneault, Norbert Steven; Murthy, Samnathan; Leuthold, Hans; Rahman, Mohamed Mizanur;, Assignee: Seagate Technology LLC (Scotts Valley, CA) |
Grooved pumping seal
Thus, it is an object of the present invention to create an improved seal for a hydrodynamic bearing; more particularly, the objective is to provide a seal which aids in making the bearing less sensit... Read More
Inventors: Grantz, Alan L.; Addy, Roger A.; Nottingham, Robert A.;, Assignee: Seagate Technology LLC (Scotts Valley, CA) |
Both ends open fluid dynamic bearing having a journal in combination with a conical bearing
Thus, it is an object of the present invention to create an improved hydrodynamic fluid bearing which is relatively insensitive to shock, vibration, changes in load and rotational speed. Yet another o... Read More
Inventors: Rahman, Mohamed Mizanur; Heine, Gunter Karl; Leuthold, Hans; Khan, Raquib Uddin;, Assignee: Seagate Technology LLC (Scotts Valley, CA) |
Motor including hydrodynamic bearings with pair of thrust plates
An object of the present invention is to increase the usable life span of hydrodynamic-bearing-equipped disk-drive motors. Another object is to improve the reliability and endurance of such disk-drive... Read More
Inventors: Ichiyama, Yoshikazu;, Assignee: Nidec Corporation (Kyoto, JP) |
In-hub spindle motor with separate fluid dynamic bearings
Thus, it is an object of the present invention to create an improved hydrodynamic bearing which is relatively insensitive to changes in load and rotational speed. Yet another objective of the present ... Read More
Inventors: Grantz, Alan Lyndon; Parsoneault, Norbert Steven; Murthy, Samnathan; Leuthold, Hans; Rahman, Mohamed Mizanur;, Assignee: Seagate Technology LLC (Scotts Valley, CA) |
Damper support assembly for a supercritical drive shaft
What is claimed is: 1. A support system for a rotating shaft, comprising: a fixed bracket; a bracket assembly having a first damping member having a first fixed end and a second movable end, said firs... Read More
Inventors: Brunken, Jr., John Elton;, Assignee: Bell Helicopter Textron Inc. (Hurst, TX) |
Electric motor having a printed circuit board attached to a stator and at least partially supporting a bearing
Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of comp... Read More
Inventors: Lesak, Alan E.;, Assignee: A. O. Smith Corporation (Milwaukee, WI) |
Miniaturized fan for printed circuit boards
In accordance with the present invention, the above noted problems of the prior art are minimized and there is provided a fan for cooling of components mounted on a PWB, said fan being of small dimens... Read More
Inventors: Cox, Ned;, Assignee: Texas Instruments Incorporated (Dallas, TX) |
Miniature fan assembly for outputting air in a certain direction
It is an object of the present invention to provide a miniature fan assembly which may output air in a certain direction and which includes only one outlet for enforcing the air output effect. It is a... Read More
Inventors: Hong, Chen Fu-In;, Assignee: |
Flat resistors for automotive blower motor speed control or other service
One object of the present invention is to provide a new and improved flat package resistor unit having new and improved alignment and clamping means which are superior to the riveted construction empl... Read More
Inventors: Waite, Daryn L.; Anderson, Raymond S.; Smith, Scott D.;, Assignee: Indak Manufacturing Corp. (Northbrook, IL) |
Miniature heat dissipating fans with minimized thickness
It is a primary object of the present invention to provide an improved miniature heat dissipating fan with minimized thickness that has an increased blade area in a limited space to increase the amoun... Read More
Inventors: Horng, Alex;, Assignee: Sunonwealth Electric Machine Industry Co., Ltd. (TW) |
Device for controlling an electronically switched motor comprising angularly distributed singularities
What is claimed is: 1. A device for controlling an electric motor of the electronic switching type comprising N pairs of poles and P phases, the said device comprising: a coder (2) intended to be rota... Read More
Inventors: Desbiolles, Pascal; Duret, Christophe;, Assignee: S.N.R. Roulements (Annecy Cedex, FR) |
Plain bearing
I claim: 1. A plain bearing comprising a metal backing, a sinter layer on said metal backing and a bearing layer on said sinter layer, said bearing layer comprising a surface layer of polytetrafluoroe... Read More
Inventors: Davies, Glyndwr;, Assignee: AEPLC (Warwickshire, GB2) |
Fluid dynamic pressure bearing and motor and magnetic disk apparatus using fluid dynamic pressure bearing
The present invention has been made in view of the fact described above and it is an object of the present invention to provide a fluid dynamic pressure bearing which is capable of reserving sufficien... Read More
Inventors: Ichiyama, Yoshikazu;, Assignee: Nidec Corporation (Kyoto, JP) |
Oil filling seal for hydrodynamic motor utilizing a movable sealing element
It is therefore an objective of the present invention to provide a fill technique for hydrodynamic bearings which is simple and reliable and adaptable to mass production techniques. It is a further ob... Read More
Inventors: Grantz, Alan L.; Kloeppel, Klaus; Dunfield, John;, Assignee: Seagate Technology, Inc. (Scotts Valley, CA) |
Generators or Motors 
