MECHANICAL SEAL
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
May 25, 2017
app pub date -
Jul 2, 2015
filing date -
Jul 11, 2014
priority date (Note) -
Published
status (Latency Note)
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Importance

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Abstract
A mechanical seal (100) includes: a rotating ring (110); a stationary ring (120); a floating ring having an annular sliding portion (131) in which a sliding surface (131a) slides on the rotating ring (120), and a pressed portion (132) in which a pressed surface (132a) makes contact with the stationary ring (120), the floating ring sealing a sealed fluid via the sliding surface (131a) of the sliding portion (131) and the pressed surface (132a) of the pressed portion (132), wherein in the floating ring (130), a size of an area of an end surface in the axial direction on a fluid side L which is a surface that receives fluid pressure of the sealed fluid in a direction toward a side of the rotating ring (110), and a size of an area of an end surface in the axial direction on the fluid side L differ from each other.
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 | |
---|---|---|
EAGLE INDUSTRY CO LTD | 1-12-15 SHIBA-DAIMON MINATO-KU TOKYO 105-8587 | |
EAGLEBURGMANN JAPAN CO LTD | 1-12-15 SHIBA-DAIMON MINATO-KU TOKYO 105-8587 |
International Classification(s)

- 2015 Application Filing Year
- F16J Class
- 713 Applications Filed
- 559 Patents Issued To-Date
- 78.41 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
TAKAHASHI, Hidekazu | Minato-ku, Tokyo, JP | 264 | 4467 |
# of filed Patents : 264 Total Citations : 4467 | |||
YANAGISAWA, Takashi | Minato-ku, Tokyo, JP | 74 | 1879 |
# of filed Patents : 74 Total Citations : 1879 |
Cited Art Landscape
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Patent Citation Ranking
- 5 Citation Count
- F16J Class
- 33.33 % this patent is cited more than
- 8 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 25, 2028 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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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