VACUUM CIRCUIT BREAKER
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
N/A
app pub date -
Dec 25, 2015
filing date -
Jan 7, 2015
priority date (Note) -
Published
status (Latency Note)
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Importance

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Abstract
A vacuum circuit breaker includes a ground tank, first and second vacuum interrupters, a link mechanism for opening and closing the vacuum interrupters and a link mechanism case housing the link mechanism and supported by an insulating support tube. An insulating operation rod for operating the link mechanism is provided through the insulating support tube and a side portion of the ground tank. An operation room is provided around the portion of the ground tank through which the insulating operation rod is inserted. A conversion mechanism for driving the insulating operation rod is arranged in the operation room. A space communicating with inner sides of bellows of the vacuum interrupters (including the inside of the link mechanism case and the inside of the insulating support tube) is filled with insulating gas of 0.3 MPa or lower. The other space is filled with insulating gas of higher pressure.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
MEIDENSHA CORPORATION | 1-1 OSAKI 2-CHOME SHINAGAWA-KU TOKYO 141-6029 |
International Classification(s)

- 2015 Application Filing Year
- H01H Class
- 1328 Applications Filed
- 1156 Patents Issued To-Date
- 87.05 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
NAGATAKE, Kazuhiro | Numazu-shi, Shizuoka, JP | 4 | 48 |
# of filed Patents : 4 Total Citations : 48 | |||
SUWA, Akihiro | Numazu-shi, Shizuoka, JP | 3 | 18 |
# of filed Patents : 3 Total Citations : 18 |
Cited Art Landscape
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Patent Citation Ranking
- 7 Citation Count
- H01H Class
- 26.63 % this patent is cited more than
- 7 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 4, 2025 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 4, 2029 |
Fee | Large entity fee | small entity fee | micro entity fee |
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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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