Title:
WET FRICTION PLATE
Document Type and Number:
WIPO Patent Application WO/2012/147539
Kind Code:
A1
Abstract:
Provided is a wet friction plate configured so that drag torque is further reduced while a reduction in the total area of friction materials is minimized. A clutch friction plate (200) is configured by providing, on flat plate-shaped annular core metal (201), friction materials (210) and oil grooves (220). The side surfaces of the core metal (201) which face clutch plates (103) are provided with the friction materials (210) shaped in small pieces and arranged in the circumferential direction of the core metal (201) with the oil grooves (220) therebetween. The friction materials (210) are arranged as friction material groups (211) each composed of a set of five continuously arranged friction materials (210). The friction materials (210) composing each of the friction material groups (211) are formed in circular arc-shaped continuously changing shapes (213a, 214a) having outer peripheral edge sections (213) and inner peripheral edge sections (214), and the distances (L213, L214) of the outer and inner peripheral edge sections (213, 214) from the center (O) of rotation of the core metal (201) change continuously.
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Inventors:
TOKUMASU JUN (JP)
TOMINAGA SHOUHEI (JP)
TOMINAGA SHOUHEI (JP)
Application Number:
PCT/JP2012/060121
Publication Date:
November 01, 2012
Filing Date:
April 13, 2012
Export Citation:
Assignee:
FCC KK (JP)
TOKUMASU JUN (JP)
TOMINAGA SHOUHEI (JP)
TOKUMASU JUN (JP)
TOMINAGA SHOUHEI (JP)
International Classes:
F16D13/62; F16D69/00
Foreign References:
| JP2009047229A | 2009-03-05 | |||
| JP2004076896A | 2004-03-11 | |||
| JP2006125507A | 2006-05-18 | |||
| JP2005265186A | 2005-09-29 |
Attorney, Agent or Firm:
ITO HIROYUKI (JP)
居藤 Hiroyuki (JP)
居藤 Hiroyuki (JP)
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Claims: