Disc brake cooling system employing high speed piston pump
OwnerRobert J. Russellinventor
Life of this patent
Estimating the term…
Abstract
The disc brake cooling system for a vehicle with hydraulic brakes has a sealed circular cooling system employing a piston pump which produces a very rapid flow of brake fluid through the brake lines and calipers constantly during non-braking of the vehicle. After braking, the constant rapid flow of the fluid cools the temperature of the fluid, and hence of the brakes, over the course of the rapid circular motion through the system so as to prevent boiling of the fluid.
Claims15
Friction disc brake apparatus including a cooling system for vehicles in combination with left side and right side wheel discs which require braking, cooling being effected without the need of cooling fins or a radiator, the apparatus comprising:
- left and right side calipers respectively for said left and right side wheel discs,
- each caliper including outer and inner fluid tight chambers disposed on opposite sides of a respective wheel disc with the outer chamber for the left side caliper being on the outer side of said left side caliper and the outer chamber for the right side caliper being on the outer side of said right side caliper,
- a first chamber-connecting fluid line connecting the outer and inner chambers of said left side caliper,
- a second chamber-connecting fluid line connecting the outer and inner chambers of said right side caliper,
- a piston pump for pumping hydraulic fluid and having an inlet port and an outlet port,
- third fluid lines connecting said outlet port to each of said outer chambers,
- fourth fluid lines connecting each of said inner chambers to said inlet port of said pump,
- each of said calipers having a pair of friction pads respectively facing opposite sides of the respective wheel disc and, in said chambers, a pair of pistons for pushing the friction pads against said wheel discs, and
- braking means including a brake pedal and a master cylinder connected to each of said outer chambers via said third fluid lines for operating said pair of pistons in each of said chambers to brake said wheel discs when said brake pedal is actuated,
- said pump being operative to circulate said fluid repeatedly through said third fluid lines, said outer chambers, said first and second chamber-connecting fluid lines, said inner chambers and said fourth fluid lines back to said pump inlet port at a rate sufficient to prevent boiling of said brake fluid by sufficiently cooling said fluid without using said cooling fins or radiator for any of said fluid lines.
Friction disc brake apparatus including a cooling system for vehicles in combination with left side and right side wheel discs which require braking, cooling being effected without the need of cooling fins or a radiator, the apparatus comprising:
- a pair of calipers respectively for said wheel discs,
- each caliper including a pair of fluid tight, fluid connected chambers disposed on opposite sides of a respective wheel disc,
- a piston pump and fluid lines for pumping hydraulic fluid into each of said chambers and back to said piston pump,
- each of said calipers having a pair of friction pads respectively facing opposite sides of the respective wheel disc and, in said chambers, pistons configured to push the friction pads against said wheel discs, and
- braking assembly including a brake pedal and a master cylinder connected to said chambers for operating said pistons to brake said wheel discs when said brake pedal is actuated,
- said piston pump being operative to circulate said hydraulic fluid repeatedly through each of said chambers at a rate sufficient to prevent boiling of said brake fluid by sufficiently cooling said fluid without using said cooling fins or radiator in said friction disc brake apparatus.
A friction disc brake apparatus including a cooling system for vehicles in combination with left and right side wheel discs, the apparatus comprising:
- a left side caliper operatively associated with said left side wheel disc;
- a right side caliper operatively associated with said right wheel disc;
- said left side caliper and said right side caliper including a pair of fluid tight chambers disposed on opposite sides of a respective wheel disc;
- a piston pump and fluid lines being configured to pump hydraulic fluid into each of said chambers and back to said piston pump;
- a braking assembly including a brake pedal and a master cylinder connected to said chambers, said braking assembly being configured to brake said wheel discs once said brake pedal is actuated, said piston pump being operative to circulate said hydraulic fluid repeatedly through each of said chambers only when said brake pedal is unactuated.
Dependencies are inferred from the claim text.