Variable rate leaf spring suspension

A suspension system for a vehicle comprising:

• a leaf spring comprising:
• a first end with a first coupler for coupling the leaf spring to a first point on a frame of a vehicle;
• a second end;
• a pivot point between the first end and the second end;
• and
• a camber between the first end and the second end;
• and
• a slider box comprising:
• a coupler for fixedly coupling the slider box to a second point on the frame of a vehicle;
• an opening for accepting the second end of the leaf spring such that the leaf spring slides in the slider box when the leaf spring is flattened;
• and
• a foreshortening mechanism for changing an effective length of a portion of the leaf spring between the second end of the leaf spring and the pivot point of the leaf spring as the leaf spring flattens.

A suspension system for a vehicle comprising:

• a leaf spring comprising:
• a first end;
• a second end;
• a pivot point between the first end and the second end;
• and
• a camber between the first end and the second end;
• a first slider box comprising:
• a coupler that couples the slider box to a first point on the frame of a vehicle via a first hanger of the vehicle;
• an opening that accepts the first end of the leaf spring such that the leaf spring slides in the first slider box when the leaf spring is flattened;
• and
• a first foreshortening mechanism that changes an effective length of a portion of the leaf spring between the first end of the leaf spring and the pivot point of the leaf spring as the leaf spring flattens;
• and
• a second slider box comprising:
• a coupler that couples the slider box to a second point on the frame of a vehicle via a second hanger of the vehicle;
• an opening that accepts the second end of the leaf spring such that the leaf spring slides in the second slider box when the leaf spring is flattened;
• and
• a second foreshortening mechanism that changes an effective length of a portion of the leaf spring between the second end of the leaf spring and the pivot point of the leaf spring as the leaf spring flattens.