 Apparatus and method of encapsulating motors |
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| Cooling fan |
| The main objective of the invention is to provide a cooling fan which can prevent dust from ... |
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| Using a micromachined magnetostatic relay in commutating a DC motor |
| FIGS. 1A and 1B show a normally-open microelectronic mechanical system (MEMS) relay or switch 100. ... |
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| Permanent magnet field-type rotating machine |
| With the above problems in view, it is an object of this invention to provide a permanent magnet ... |
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| Plain carbon steel hub for data storage device |
| The present invention provides a rotating removable data storage device having a hub of coated ... |
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| Disk storage device with improved spindle torque and acceleration |
| The foregoing and other objects are achieved by providing a disk storage device that utilizes an ... |
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| Magneto generator |
| An object of the present invention is to provide a magneto generator capable of blowing cooling air ... |
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| Alternator for vehicles having permanent magnets in rotor |
| The present invention addresses this problem, and has an object to improve electric power generated ... |
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| Compliant vibration isolation housing assembly for a data storage system |
| The present invention is a vibration isolation apparatus and method for attenuating vibrations in a ... |
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Alternator fan
| Details |
Inventors: Militello, Anthony; Fougner, Jayeson David; Frederick, Dean Mark;
Assignee: Visteon Global Technologies, Inc. (Dearborn, MI)
Primary Examiner: Nguyen; Tran
Assistant Examiner:
Attorney, Agent or Firm: Brinks Hofer Gilson & Lione
An alternator fan having a generally disc-shaped body with opposed first and second faces. The body includes a plurality of ribs that define raised peaks on the first face and recessed valleys on the second face. |
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DETAILED DESCRIPTION OF THE INVENTION FIG.
1 illustrates an automotive alternator rotor and stator assembly, shown generally at 22, embodying the principles of the present invention and including two alternator fans shown generally at 20A and 20B.
The illustrated alternator rotor and stator assembly 22 uses a claw-pole style rotor assembly 24 to provide a changing magnetic field with the machine.
This is accomplished by rotating the rotor assembly 24 within a stator 25 core.
Although a claw-pole style rotor is shown in FIG.
1, it should be noted that the alternator fan of the present invention is not limited to use with this type of rotor.
Rather it can be used with any type of rotor assembly, like a permanent magnet rotor 23, shown in FIG.
6.
The claw-pole rotor assembly 24 contains a front pole 26, a rear pole 28, a wound field coil 30, shaft 32, slip rings (not shown), and the two alternator fans 20A, 20B mentioned above.
While the rear fan 20B is only partially seen in FIG.
1, it is noted that the two alternator fans 20A, 20B are similarly designed.
The first fan 20A is attached to a first exterior surface of the rotor assembly and the second fan 20B is attached to a second exterior surface of the rotor assembly.
More specifically, the first fan 20A is attached to the front pole 26 and the second fan 20B is attached to the rear pole 28.
Typically, the rotor assembly 24 is assembled by placing the wound field coil 30 onto a hub of one of the poles 26 or 28.
The opposite pole is assembled onto the assembly of the first pole with the wound field coil 30.
The shaft 32 is inserted through bores that are in the center of each of the two poles 26, 28, engaging the poles 26, 28 and locking the assembly 24 together.
The slip rings (not shown) are pressed onto the rear end of the shaft 32 adjacent to the second fan 20B.
A rotor stop 34 is assembled onto the front of the shaft 32 adjacent to the first fan 20A.
The wound field coil 30 wire leads are routed across the back face of the poles and in grooves 38 in the shaft 32
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