Patent ID: 8671679

Claim:
A fast fill braking system comprising: a master cylinder; a primary pressure chamber including a primary chamber transition point and having a first chamber portion on a first side of the primary chamber transition point and located forwardly of a second chamber portion located on a second side of the primary chamber transition point, the first chamber portion having a diameter larger than a diameter of the second chamber portion; and a primary piston including a first piston portion positioned within the primary pressure chamber and a second piston portion extending out of the primary pressure chamber, the first piston portion having a diameter (i) larger than a diameter of the second piston portion, and (ii) complementary to the diameter of the second chamber portion, wherein the primary piston is configured to locate a part of the first piston portion on the first side of the primary chamber transition point in a forward position and to locate the first piston portion on the second side of the primary chamber transition point in a rearward position.