Patent ID: 7494146

Claim:
A frame for a bicycle having a front frame having a front; a rear; a head tube being formed at the front of the front frame; a down tube being connected to and protruding at an angle down from the head tube toward the rear of the front frame and having a bottom end; a top tube being connected to and protruding from the head tube toward the rear of the front frame and having a rear end; a bottom bracket shell being connected transversally to the bottom end of the down tube and having a top; and a seat tube being connected to and protruding up from the bottom bracket shell and being connected to the rear end of the top tube and having an upper end; a lower end; an upper bracket seat being formed on and protruding forward from the seat tube; a connecting bracket being formed on the seat tube and being connected to the down tube over the bottom bracket shell; and a lower bracket seat being formed on and protruding forward from the seat tube between the connecting bracket and the bottom bracket shell; a mounting bracket assembly being connected pivotally to the front frame and having two front mounting brackets being connected pivotally to the upper bracket seat of the seat tube; and a rear mounting bracket being connected pivotally to the front mounting bracket; a rear frame being connected pivotally to the mounting bracket assembly and the front frame and having an upper fork being connected to the rear mounting bracket and having a top end being connected pivotally to the rear mounting bracket; and two bottom ends being parallel to each other; a lower fork being connected pivotally to the seat tube and having two chainstays parallel to each other and being connected to the lower bracket seat of the seat tube; and two dropouts being respectively mounted on the chainstays of the lower fork and being connected pivotally to the bottom ends of the upper fork; and a shock absorbing device being connected to the front frame, the rear frame and mounting bracket assembly and having a first shock absorber being mounted pivotally between the connecting bracket of the front frame and the front mounting brackets of the mounting bracket assembly; and a second shock absorber being mounted pivotally between the rear mounting bracket of the mounting bracket assembly and one of the dropouts of the rear frame.