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Title:
CLUTCH PISTON
Document Type and Number:
WIPO Patent Application WO/2006/051801
Kind Code:
A1
Abstract:
A low cost clutch piston (1) capable of applying large operation force to a multiplate clutch (4). This is achieved by making the outer diameter (DB) of a pressure receiving surface of the clutch piston (1) greater than the diameter of a clutch pressing section (16). The clutch piston (1) is provided with a piston body (10) that is axially movably inserted in a cylinder (2) and with an inner peripheral seal lip (21) and an outer peripheral seal lip (22) that are integrally arranged on the inner periphery and the outer periphery of the piston body (10) and are made to be slidably in intimate contact with an inner tube section (2a) and an outer tube section (2b) of the cylinder (2). The piston body (10) has the clutch pressing section (16) for pressing the multiplate clutch (4). The clutch pressing section (16) is bent to the inner periphery side through a tapered section (15) that extends with inclination from an outer periphery circular tube section (14) of the piston body (10) to the inner periphery side.

Inventors:
KIRIKI KOICHI (JP)
GOTO KIICHIRO (JP)
Application Number:
PCT/JP2005/020506
Publication Date:
May 18, 2006
Filing Date:
November 09, 2005
Export Citation:
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Assignee:
NOK CORP (JP)
KIRIKI KOICHI (JP)
GOTO KIICHIRO (JP)
International Classes:
F16D25/0638; F16D25/12
Foreign References:
JPH11351273A1999-12-24
JPH11193830A1999-07-21
JP2004019830A2004-01-22
JPS61175327A1986-08-07
US6039160A2000-03-21
US4036344A1977-07-19
JPH0667965U1994-09-22
JPH11351273A1999-12-24
JP2000046071A2000-02-15
Attorney, Agent or Firm:
Nomoto, Yoichi (Terao Bldg.,, 8-4, Nishi-Shinbashi 2-chome, Minato-ku Tokyo, JP)
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