Axial-gap dynamo-electric machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 2, 2021
Grant Date -
Jul 6, 2017
app pub date -
Apr 14, 2014
filing date -
Apr 14, 2014
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
This invention reduces the shaft voltage of an axial-air-gap dynamo-electric machine while ensuring high output and high efficiency. Said axial-air-gap dynamo-electric machine comprises the following: a stator comprising a plurality of stator cores, each of which comprises a core and a coil, arranged in a circle around a shaft; a housing, the inside surface of which faces the stator radially; and at least one rotor, the surface of which faces the surface of the stator with a prescribed air gap interposed therebetween in the radial direction of the shaft. The rotor has, on the outside thereof, a conductive section comprising a conductive member. This axial-air-gap dynamo-electric machine has a first region where the inside surface of the housing faces the aforementioned conductive section radially and a second region, closer to the stator than the first region is, that extends to the coil side surfaces that face the rotor. The proportion of connecting wires in the second region is higher than in the first region.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO LTD | 1-5-1 SOTOKANDA CHIYODA-KU TOKYO 101-0021 |
International Classification(s)

- 2014 Application Filing Year
- H02K Class
- 2148 Applications Filed
- 1788 Patents Issued To-Date
- 83.25 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Enomoto, Yuji | Tokyo, JP | 112 | 1153 |
# of filed Patents : 112 Total Citations : 1153 | |||
Iwasaki, Norihisa | Tokyo, JP | 21 | 146 |
# of filed Patents : 21 Total Citations : 146 | |||
Masaki, Ryousou | Tokyo, JP | 6 | 49 |
# of filed Patents : 6 Total Citations : 49 | |||
Sakai, Toru | Tokyo, JP | 128 | 514 |
# of filed Patents : 128 Total Citations : 514 | |||
Suzuki, Toshifumi | Tokyo, JP | 93 | 879 |
# of filed Patents : 93 Total Citations : 879 | |||
Takahashi, Shuuichi | Tokyo, JP | 18 | 64 |
# of filed Patents : 18 Total Citations : 64 | |||
Tokoi, Hirooki | Tokyo, JP | 29 | 196 |
# of filed Patents : 29 Total Citations : 196 | |||
Yamazaki, Katsuyuki | Tokyo, JP | 52 | 497 |
# of filed Patents : 52 Total Citations : 497 | |||
Yoneoka, Yasuei | Tokyo, JP | 11 | 43 |
# of filed Patents : 11 Total Citations : 43 |
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Patent Citation Ranking
- 7 Citation Count
- H02K Class
- 59.08 % this patent is cited more than
- 4 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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3.5 Year Payment | $1600.00 | $800.00 | $400.00 | May 2, 2025 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 2, 2029 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 2, 2033 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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