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US 2008/0173517 A1Published application
Friction plate for wet multi-plate clutch
AssigneeNSK-Warner K.K.
InventorsTsuyoshi HIRAYANAGI, Hideaki SUZUKI
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Abstract
Segment pieces 42 of a friction material are bonded onto a core plate 41 of a friction plate 40 for a wet multi-plate clutch at intervals. A porosity of a perimetric portion 43 of the segment piece 42 which is shaded with oblique lines is made smaller by pressing or increasing a resin content of the perimetric portion 43. In addition, a perimetric portion which corresponds to the portion 43 may be made up of a separate member of a different material having a small porosity.
Claims5
A friction plate for a wet multi-plate clutch comprising:
- a core plate;
- and
- a plurality of segment piece of a friction material bonded onto the core plate at intervals, wherein
- a porosity of a perimetric portion of the segment piece which surrounds inside-diameter, outside-diameter and both circumferential sides thereof is made smaller than that of other portions of the segment piece.
1 more element
Dependencies are inferred from the claim text.