초록 ▼

An infinitely variable power transmission mechanism comprising a driving sheave assembly and a driven sheave with a torque transmitting drive belt connecting the sheaves, a ratio controlling servo for changing the effective pitch diameter of the sheave assemblies, a belt loading servo for controllin

An infinitely variable power transmission mechanism comprising a driving sheave assembly and a driven sheave with a torque transmitting drive belt connecting the sheaves, a ratio controlling servo for changing the effective pitch diameter of the sheave assemblies, a belt loading servo for controlling the load capacity of the belt and relatively reduced friction diaphragm actuators for adjustably positioning movable sheave portions of the sheave assemblies, the belt and sheave assembly portions of the mechanism being in a housing area that is isolated from gearing portions of the mechanism.

대표청구항 ▼

An infinitely variable belt drive comprising: a torque input sheave assembly, a torque output sheave assembly and a belt driveably connecting said sheave assemblies; said driving sheave assembly comprising an axially fixed driving sheave portion and an axially adjustable driving sheave portion with

An infinitely variable belt drive comprising: a torque input sheave assembly, a torque output sheave assembly and a belt driveably connecting said sheave assemblies; said driving sheave assembly comprising an axially fixed driving sheave portion and an axially adjustable driving sheave portion with said belt positioned between said driving sheave portions and frictionally engageable therewith, the pitch radius of said belt and driving sheave assembly increasing as said adjustable driving sheave portion is moved axially relative to said fixed driving sheave portion; a fluid pressure actuator for said driving sheave assembly comprising an actuator member located adjacent said axially adjustable driving sheave portion and connected to said fixed driving sheave portion, said actuator member having an axial extension, a fist axial extension carried by said adjustable driving sheave portion located adjacent the axial extension of said actuator member and a second axial extension carried by said fixed driving sheave portion; a first flexible diaphragm seal connected at its outer margin to said adjustable driving sheave portion and at its inner margin to said second axial extension; a second flexible diaphragm seal secured at its inner margin to said fixed actuator member and at its outer margin to said first axial extension; said actuator member and said diaphragm seals defining a pressure chamber which, when pressurized, causes said adjustable driving sheave portion to move axially relative to said fixed driving sheave portion, the adjustable driving sheave portion and the fixed driving sheave portion being formed with engaging sliding spline teeth, said sliding spline teeth being located within the pressure chamber for said driving sheave assembly.