Rotor-stator structure for electrodynamic machines
OF EXEMPLARY EMBODIMENTS Definitions The following definitions apply to some of the elements described with respect to some embodiments of the invention. These definitions may likewise be expanded up... Read More
Inventors: Petro, John Patrick; Wasson, Ken George;, Assignee: NovaTorque, Inc. (North Highlands, CA) |
Disc drive spindle motor having tuned stator with adhesive grooves
One aspect of the present invention relates to a method of mounting a stator, which has a resonant vibrational frequency, to a stationary member in a disc drive spindle motor. The method includes: pro... Read More
Inventors: Pelstring, Robert M.;, Assignee: Seagate Technology, Inc. (Scotts Valley, CA) |
Motor having rotatable shaft coupled with worm shaft
The present invention addresses the above disadvantages. Thus, it is an objective of the present invention to provide a motor capable of reducing generation of noises and vibrations at a connection be... Read More
Inventors: Kawakami, Takenobu; Suzuki, Keijiro; Masuda, Toshiyuki; Shibata, Kouji;, Assignee: Asmo Co., Ltd. (Shizuoka-ken, JP) |
Spindle motor with multiple thrust plate fluid dynamic bearing
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. Another objective of the invention is... Read More
Inventors: Heine, Gunter Karl; Khan, Raquib Uddin; Rahman, Mohamed Mizanur; Leuthold, Hans;, Assignee: Seagate Technology, Inc. (Scotts Valley, CA) |
Top loading internal assembly for a power toothbrush
What is claimed is: 1. A driving assembly for a small power appliance, comprising: a drive member having a distal end portion, providing in operation a motion to a driven member assembly; a driven mem... Read More
Inventors: Hall, Scott E.; Hanela, Craig D.; Taylor, Richard K.;, Assignee: Koninklijke Philips Electronics N.V. (Eindhoven, NL) |
Hydraulic dynamic bearing and spindle motor utilizing hydraulic dynamic bearing
Hence, it is an object of the invention to provide a hydraulic dynamic bearing capable of resolving the above-described problem in the conventional technology and to a spindle motor using the hydrauli... Read More
Inventors: Iwaki, Tadao; Ohki, Shigeru; Kawawada, Naoki; Ohta, Atsushi; Nitadori, Koji; Takehara, Isamu; Goto, Hiromitsu; Suzuki, Takafumi;, Assignee: Seiko Instruments Inc. (JP) |
Motor
Therefore, it is an object of the present invention to suppress the cogging phenomenon from occurring in a motor, such as a spindle motor. A motor according to the invention includes a permanent magne... Read More
Inventors: Iwaki, Tadao; Kawawada, Naoki; Ohta, Atsushi; Nitadori, Koji;, Assignee: Seiko Instruments Inc. (JP) |
Disk-drive motor rotating on a magnetically counterbalanced single hydrodynamic thrust bearing
A motor for a hard disk drive device in accordance with several embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specifically, FIG. 1 sh... Read More
Inventors: Ichiyama, Yoshikazu;, Assignee: Nidec Corporation (Kyoto, JP) |
Bearing device for a motor having a bearing set including multiple bearings of different materials
Accordingly, an object of the present invention is to provide a self-lubricating bearing device which is durable and not noisy. To achieve the above-mentioned object, a bearing device of the present i... Read More
Inventors: Chou, Yu-Cheng; Chang, Chin-Hung;, Assignee: Hon Hai Precision Ind. Co., Ltd. (Taipei Hsien, TW) |
High performance bicycle propulsion
Referring first to FIGS. 1 and 3, a typical power drive chain 10 includes pairs of like intermediate links 11 and 12, pairs of like side links 13 and 14, and pivots such as rivets 15 interconnecting ... Read More
Inventors: MacCready, Jr., Paul B.; Nicoloff, William J.;, Assignee: Aerovironment, Inc. (Monrovia, CA) |
Multi-phase permanent-magnet type electric rotating machine
In order to solve the foregoing problems, according to the first aspect of the present invention, provided is a multi-phase permanent-magnet type electric rotating machine comprising: a hybrid rotor i... Read More
Inventors: Sakamoto, Masafumi;, Assignee: Japan Servo Co., Ltd (Tokyo-to, JP) |
Bicycle with assist engine
This invention is adapted to be embodied in an engine assisted, manually powered vehicle. The vehicle comprises a body assembly that is adapted to accommodate at least one rider. A propulsion device i... Read More
Inventors: Yokoyama, Yoshiharu;, Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Shizuoka-ken, JP) |
Two-phase permanent-magnet electric rotating machine
In order to achieve the above object, according to a first aspect of the present invention, the two-phase permanent-magnet electric rotating machine comprises: a stator having 2.sup.n main poles (n be... Read More
Inventors: Sakamoto, Masafumi;, Assignee: Japan Servo Company, Ltd. (Tokyo-to, JP) |
Torque detection device
Accordingly, an object of the present invention is to provide a torque detection device for detecting torque applied to a bicycle by a rider and generating a signal corresponding to the torque for con... Read More
Inventors: Li, Shu-Shian;, Assignee: |
Front suspension with three ball joints for a vehicle
In view of the foregoing, one object of the present invention is to exploit the design elements of a snowmobile that are easily and readily transferred to the design of a wheeled vehicle, such as an A... Read More
Inventors: Mallette, Bertrand; Girouard, Bruno; Fecteau, Berthold; Cote , Mario;, Assignee: Bombardier Recreational Products Inc. (Valcourt, CA) |
Methods and apparatus for increasing power of permanent magnet motors
In summary, the present invention provides a method for increasing the power output of permanent magnet motors. A power supply capable of demagnetizing motor permanent magnets is power limited to a sa... Read More
Inventors: Miekka, Fred N.; Mackie, Peter W.;, Assignee: |
Submersible pump apparatus
According to the present invention, there is provided a fluid distribution or conduit means coupled to a source of fluid and operative to direct such fluid into one or more regions adjacent a submersi... Read More
Inventors: Ivins, Earl E.; Ivins, John L.;, Assignee: Engineers Sales-Service Co., Inc. (Los Angeles, CA) |
Power connection apparatus having integrated surge arrestor
I claim: 1. A power line unit having a least two power leads, an insulating shell encasing said power leads, said shell including a sidewall arrestor opening exposing said power leads, an arrestor uni... Read More
Inventors: Shaikh, Maqboolhusein G.;, Assignee: A. O. Smith Corp. (Milwaukee, WI) |
Surge arrestor
OF THE DRAWINGS In the specific example of the invention illustrated and described herein, the arrestor is installed in an electric motor 10 which is coupled to drive a pump 11. The motor-pump assemb... Read More
Inventors: George, Kenneth D.;, Assignee: Franklin Electric Co., Inc. (Bluffton, IN) |
Vertical submersible pump assembly
Having described my invention, I claim: 1. A vertical submersible pump assembly, comprising a pump assembly casing which contains a hydraulic drive motor with a drive shaft, a pump housing which is se... Read More
Inventors: Hofstad, .ANG.ge;, Assignee: Kvaerner-Eureka A/S (Tranby, NO) |
Surge suppression system for submersible electrical motors
I claim: 1. An electrically surge protected submersible motor comprising a housing in communication with electrical ground when the motor is submersed; an end ring in contact with said housing; stator... Read More
Inventors: Yuhasz, Frank U.;, Assignee: McNeil (Ohio) Corporation (St. Paul, MN) |
Submersible pump
An object of the present invention is, therefore, to overcome the above-mentioned problems associated with the prior art by providing a submersible pump which has of a particularly simple structure an... Read More
Inventors: Arakawa, Shinichiro;, Assignee: Ebara Corporation (Tokyo, JP) |
Submersible pump support
The disadvantages of the prior art are overcome by the present invention which provides a submersible pump support including at least one pump housing, a first pump support rail extending in a first p... Read More
Inventors: Gibson, Roger L.; Frasure, Steven L.;, Assignee: |
Submersible motor unit
The object of the invention lies in the improvement of a submersible motor unit of the previously cited type such that the unit from the point of view of preventing environmental damage can be economi... Read More
Inventors: Jensen, Niels Due; Mikkelsen, Steen; Andersen, Preben;, Assignee: Grundfos A/S (Bjerringbro, DK) |
Submersible motor unit
The present invention relates to a submersible motor unit for use in driving a pump with the pump and motor unit submerged in liquid. The motor unit includes a tubular housing member and a tubular inn... Read More
Inventors: Bevington, Jack T.;, Assignee: F. E. Myers division of Pentair Pump Group (St. Paul, MN) |
End shield constructed with a separate component holder
The electric motor of the present invention is provided with a component compartment integrally formed on an end shield of the electric motor. The component compartment houses and protects a motor com... Read More
Inventors: Modi, Chetan O.; Meyer, Stanley C.; Morgan, Donald; Pacello, Thomas A.;, Assignee: Emerson Electric Co. (St. Louis, MO) |
Cover for electric motor
Among the several objects and features of the present invention may be noted the provision of a dynamoelectric machine which is connectable to an adjacent part while being simultaneously protected fro... Read More
Inventors: Lyle, David M.; Druhe, Timothy J.;, Assignee: Emerson Electric Co. (St. Louis, MO) |
Integrated motor/generator/flywheel utilizing a solid steel rotor
These and other objects of the invention are accomplished in accordance with the principles of the invention by providing various flywheel energy conversion devices. The preferred embodiments include ... Read More
Inventors: Clifton, David B.; Pinkerton, Joseph F.; Andrews, James A.; Little, Scott R.;, Assignee: Magnetic Bearing Technologies, Inc. (Austin, TX) |
Motor having rotatable shaft coupled with worm shaft
The present invention addresses the above disadvantages. Thus, it is an objective of the present invention to provide a motor capable of reducing generation of noises and vibrations at a connection be... Read More
Inventors: Kawakami, Takenobu; Suzuki, Keijiro; Saitou, Toshihiro; Adachi, Tadashi; Yamamoto, Hiroaki; Masuda, Toshiyuki; Shibata, Kouji;, Assignee: Asmo Co., Ltd. (Shizuoka, JP) |
Rotary actuating drive and rotary switch
According to the present invention, in a rotary actuator of the type cited above, elements are provided for exerting a corrective torque on the rotor, the elements, in the currentless state of the sta... Read More
Inventors: Hettlage, Eckart;, Assignee: Robert Bosch GmbH (Stuttgart, DE) |
Generators or Motors 
