Multi-plate clutch

A multi-plate clutch usable in combination with a driver mechanism capable of applying pressure force in a direction along an axis, comprising:

• one or more core plates respectively coupled with a first rotary body rotatable about the axis;
• one or more reaction plates arranged alternately in the direction along the axis with the core plates and respectively coupled with a second rotary body rotatable about the axis, the reaction plates arranged to receive the pressure force from the driver mechanism to move in the direction along the axis and come into frictional contact with the core plates to brake the first rotary body relative to the second rotary body;
• one or more friction members respectively fixed to faces on the respective core plates, the faces on the respective core plates being opposed to the reaction plates, the one or more friction members including a bundle of warp yarns and a bundle of weft yarns woven perpendicularly to each other, the yarns being formed of carbon fibers;
• and
• a plurality of bottomed grooves formed on faces on the respective reaction plates, the faces on the respective reaction plates arranged to come into contact with the one or more friction members,
• wherein the bottomed grooves form straight lines parallel with each other over the entirety of the faces on the respective reaction plates to coincide with the one or more friction members.