Rotary hydraulic actuator including groove-like fluid supply paths in a face of a bracket
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United States of America Patent
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Nov 24, 1998
Grant Date -
N/A
app pub date -
Apr 16, 1997
filing date -
Oct 8, 1996
priority date (Note) -
Expired
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Abstract
A rotary hydraulic actuator including a sealed vessel including brackets and a casing, a partition vane attached to a shaft supported by the brackets for dividing an inside of the sealed vessel into a first pressure chamber and a second pressure chamber and pivoting the shaft by a pressure difference between the first and the second pressure chambers, suction and exhaust hydraulic ports and a drain port installed to the casing, a hydraulic control valve mounted to the casing for conducting a hydraulic control along with the suction and exhaust hydraulic ports and the drain port, groove-like hydraulic pressure supply paths installed to a face of one of the brackets in contact with the casing for communicating the first pressure chamber and the second pressure chamber respectively to the suction and exhaust hydraulic ports and a groove-like drain path installed to a face of other one of the brackets in contact with the casing for communicating to the drain port.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
MITSUBISHI DENKI KABUSHIKI KAISHA | 2-3 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO 100-8310 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Fukuhara, Katsuyuki | Kobe, JP | 18 | 235 |
Sekiya, Mutsuo | Tokyo, JP | 36 | 465 |
Sugawara, Masafumi | Tokyo, JP | 25 | 183 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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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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