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Title:
PISTON CYLINDER UNIT
Document Type and Number:
Japanese Patent JP2006022958
Kind Code:
A
Abstract:

To attain a high cable release force for clutch operation without pneumatic type force amplification.

In a piston cylinder unit for a master cylinder and a slave cylinder in a hydraulic clutch operation system, the piston cylinder unit is constituted that an effective pressure surface AD on which a hydraulic pressure acts can change over the strokes in axial direction of pistons 3 and 14. Namely, in a pressure region, the piston 3 is radially decreased in a diameter (tapered) to a deepest point in a radial direction starting from a start diameter and thereafter also increased again in an axial direction to a start diameter.


Inventors:
RAMMHOFER THOMAS
Application Number:
JP2005000198125
Publication Date:
January 26, 2006
Filing Date:
July 06, 2005
Export Citation:
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Assignee:
LUK LAMELLEN & KUPPLUNGSBAU
International Classes:
F16D25/08; F15B3/00; F16D25/12
Domestic Patent References:
JPS5984654A1984-05-16
JP2000108878A2000-04-18
JPS61188262A1986-08-21
JPH09269022A1997-10-14
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel