Dual friction clutch

A friction clutch comprising:

• a flywheel having a first driving surface thereon;
• a driving plate attached to the flywheel and having a second driving surface thereon facing said first driving surface;
• a first pressure plate interposed between the flywheel and the driving plate and supported for rotation with the flywheel;
• a second pressure plate interposed between the driving plate and said first pressure plate and supported for rotation with the flywheel;
• a first driven plate interposed between said first driving surface and said first pressure plate;
• a second driven plate interposed between said second driving surface and said second pressure plate;
• spring means interposed between said first and second pressure plates and acting on each of said pressure plates to exert a clamping load on each driven plate;
• and a plurality of release mechanisms, each release mechanism comprising:
• a lever, pivotably connected to the driving plate about a respective first pivot axis on the other side of the driving plate to said first driving surface;
• a first link, pivotably connected to the lever about a respective second pivot axis;
• an abutment on said first link;
• adjustment means on the lever to contact said abutment to move said first link with the lever when the lever is pivoted in one direction;
• an abutment member, pivotably connected to said first link about a respective third pivot axis parallel to said first pivot axis and operably connected to said second pressure plate to move said second pressure plate away from said second driving surface when the lever is pivoted in said one direction;
• a second link operatively connected to the lever and said first pressure plate to move said first pressure plate away from said flywheel when the lever is pivoted in said one direction;
• and means on the lever for engagement with a clutch release bearing which is operable to rotate said lever in said one direction.