Patent ID: 7891645

Claim:
A coil spring system to be used within a leg of a bicycle fork comprising: a. a first soft spring with a first and second end having a given height when in the fully extended condition, and a second firm spring with a first and second end having a greater height than the first soft spring; b. a coupler assembly comprising a coupler and a threaded bolt, the coupler having a first and second end including an internally threaded bore and a transverse outer ring located at the middle of the coupler, the transverse ring having a first surface and a second surface wherein the first soft spring at its second end rests on the first surface and the second firm spring at its first end rests below the second surface, the first soft spring positioned above the second firm spring so that the first end of the first soft spring rests adjacent a top end of the vehicle fork leg, the threaded bolt having a first and second end including a central bore with a non-round opening at the first end, the threaded bolt being threadedly received at the center of said coupler; c. a non-round shaped shaft having a length at least equal to the height of the first soft spring, the non-round shaped shaft having a top portion and a bottom portion, the bottom portion of the shaft inserted within the central bore with the non-round opening of the coupler member such that the threaded bolt is centrally positioned within the first soft spring; d. an adjustment knob having a knob, a top fastening portion for mounting the knob onto a top of the leg of the bicycle fork and a lower retaining portion for fixedly retaining the top portion of the non-round shaped shaft; e. a compression rod system including the second firm spring retained at the top of the compression rod system, the first soft spring and the second firm spring and the coupler member and the non-round shaped shaft and the compression rod system resting within the leg of the bicycle fork; and f. the spring compression range of the first soft spring is selectively increased by turning the knob in one direction to cause rotation of the threaded bolt which further moves the coupler away from the knob to thereby increase the height of the first soft spring and the spring compression range of the first soft spring is selectively decreased by rotating the knob in the opposite direction to cause the coupler to move closer to the knob to thereby decrease the height of the first soft spring.