| 摘要 |
An infinitely variable transmission mechanism comprising an adjustable driving sheave assembly, an adjustable driven sheave assembly, a ratio controlling servo for adjusting the pitch diameter of said driving sheave assembly and the pitch diameter of said driven sheave assembly, said sheave assemblies being connected by a driving belt, fluid pressure operated servo means for adjustably positioning the pitch diameter of said driving sheave assembly, fluid pressure operated servo means for adjustably positioning the pitch diameter of said driven sheave assembly, a fluid pressure operated starting clutch, a pump for establishing a control pressure, a drive shaft for said pump extending through said first sheave assembly, a first overrunning coupling means for delivering torque from said first sheave assembly to said drive shaft and a second overrunning coupling means for delivering torque from said torque input shaft to said drive shaft whereby said pump is driven and capable of maintaining a control pressure regardless of the direction of torque delivery through said transmission mechanism. |
