Rotatable apparatus having a stress dissipation structure

A rotatble apparatus comprising:

• a rim;
• a first plate inwardly extending from said rim in a radial direction;
• an inner collar transversely and coaxially projecting from said first plate, said inner collar being substantially parallel to said rim;
• a second plate;
• an outer collar transversely and coaxially projecting from said second plate for concentric positioning relative to said inner collar, said collars overlapping each other in a substantially parallel relationship, said second plate extending substantially parallel to said first plate;
• and
• means for dissipating rotational stress disposed between and coupling said rim and said outer collar, said means for dissipating rotational stress further disposed between said plates.

A rotatble apparatus comprising:

• a rim;
• a first plate inwardly extending from said rim in a radial direction;
• an inner collar transversely and coaxially projecting from said first plate, said inner collar being substantially parallel to said rim;
• a second plate;
• an outer collar transversely and coaxially projecting from said second plate for concentric positioning relative to said inner collar, said collars overlapping each other in a substantially parallel relationship, said second plate extending substantially parallel to said first plate;
• and
• means for movably engaging said second plate to said rim.

A rotatble apparatus comprising:

• a rim;
• a set of teeth outwardly extending from said rim;
• a first plate inwardly extending from said rim in a radial direction;
• an inner collar transversely and coaxially projecting from said first plate, said inner collar being substantially parallel to said rim;
• a second plate;
• and
• an outer collar transversely and coaxially projecting from said second plate for concentric positioning relative to said inner collar, said collars overlapping each other in a substantially parallel relationship, said second plate extending substantially parallel to said first plate.

A clutch plate comprising:

• a rim;
• a friction material disposed along a surface of said rim;
• a first plate inwardly extending from said rim in a radial direction;
• an inner collar transversely and coaxially projecting from said first plate, said inner collar being substantially parallel to said rim;
• a second plate;
• and
• an outer collar transversely and coaxially projecting from said second plate for concentric positioning relative to said inner collar, said collars overlapping each other in a substantially parallel relationship, said second plate extending substantially parallel to said first plate.