| 摘要 |
A brake system is provided, the brake system having a brake valve having a first mode and a second mode. A retractor is in fluid communication with the brake valve, and a brake assembly is in fluid communication with the retractor. When the brake valve is in a first mode, the brake assembly engages, and when the brake valve is in a second mode, the brake retractor disengages the brake assembly via a fluid vacuum. |
