Title:
HYDRAULIC CYLINDER
Document Type and Number:
Japanese Patent JP2010286014
Kind Code:
A
Abstract:
To provide a hydraulic cylinder which enables the formation of cavitation near a lip tip end to be suppressed while protecting the lip tip end of a seal member.
The hydraulic cylinder includes a portion structured with a minute clearance S in order to suppress the protrusion of the lip 12a1 at an end side farther from the lip 12a1 within the annular clearance between the inner circumferential surface of a shaft hole of a cylinder 31 and a piston 32. An annular clearance area for suppressing the formation of the cavitation, which shortens the axial distance of the annular clearance portion, is formed at the side opposite to a mounting groove 31b sandwiching the annular clearance portion structured of the minute clearance S.
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Inventors:
ABE YOSHIYUKI (JP)
Application Number:
JP2009138584A
Publication Date:
December 24, 2010
Filing Date:
June 09, 2009
Export Citation:
Assignee:
NOK CORP (JP)
International Classes:
F16J10/00; F15B15/14
Domestic Patent References:
| JPS63167179A | 1988-07-11 | |||
| JPS55105606A | 1980-08-13 |
Attorney, Agent or Firm:
Kazunobu Sera
Mayuko Wakuda
Koichiro Sakai
Mayuko Wakuda
Koichiro Sakai
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