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US 6,585,096 B2Granted
Friction plate and multi-plate clutch using friction plates
AssigneeNSK-Warner K. K.
InventorKazuyuki Fujita
Life of this patent
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Abstract
In a friction plate obtained by adhering a plurality of friction material segments onto a core plate, and axial thickness of each of the friction material segment in areas including adjacent portions between the adjacent friction material segments is thinner than the other portion of the friction material segment.
Claims14
A friction plate obtained by adhering a plurality of friction material segments onto a core plate, wherein:
- first and second connecting portions are provided at first and second circumferential ends, respectively, of each said friction material segment,
- said first connecting portion includes a projection and said second connecting portion includes a recess, said projection of said first connecting portion of said friction material segment being received in said recess of said second connecting portion of an adjacent friction material segment,
- first and second areas of reduced axial thickness are provided at said first and second circumferential ends of each said friction material segment, and
- said first and second connecting portions are located within said first and second areas of reduced axial thickness.
1 more element
A multi-plate clutch comprising:
- a clutch case and a hub which are rotated relative to each other on the same axis;
- at least one separator plate disposed on an inner periphery of said clutch case;
- at least one friction plate disposed on an outer periphery of said hub and arranged alternately with said separator plate in an axial direction;
- and
- a piston which urges said separator plate and said friction plate to frictionally engage said plates with each other;
- and wherein
- input and output of a driving force is effected between said clutch case and said hub;
- and further wherein
- said friction plate is formed by adhering a plurality of friction material segments to a core plate,
- first and second connecting portions are provided at first and second circumferential ends, respectively, of each said friction material segment,
- said first connecting portion including a projection and said second connecting portion including a recess, said projection of said first connecting portion of said friction material segment being received in said recess of said second connecting portion of an adjacent friction material segment,
- first and second areas of reduced axial thickness are provided at said first and second circumferential ends of said friction material segment, and
- said first and second connecting portions are located within said first and second areas of reduced axial thickness.
10 more elements
Dependencies are inferred from the claim text.