Transmission Elements TRIZ Cases

Nested planetary gear sets and selective clutches deliver three EV drive ratios for sustained torque without bulky gearbox packaging.

Two nested planetary gear sets and four clutches deliver high EV torque across speeds without the complexity of conventional multi-speed gearboxes.

A rotatable two-part shim lets PTO assemblies set bearing end play in one build, avoiding repeated teardown and shim stocking.

Dual planetary gear sets and selective clutches deliver high off-road torque and efficient road-speed operation within tight EV drive-module space.

A four-raceway support layout stabilizes the planetary rolling element and cuts manufacturing cost by removing extra shaft members.

By combining gear, double-ring, and hydraulic paths, this transmission widens ratio range while preserving stepless speed control and efficiency.

A multi-stage rack-and-pinion door opener varies pusher speed and force to overcome latch resistance without a larger motor.

A hydrostatic-planetary transmission layout cuts hydraulic pump swing angle during shifting, shortening gear changes while keeping a wide speed range.

A clutch-controlled hydraulic and planetary gear layout expands stepless ratio range while balancing transmission efficiency and speed regulation.

A variable rack-and-pinion transmission gives high initial opening force, then faster door motion without using an oversized motor.

Rolling cone assemblies and series epicyclic friction stages raise torque output while preserving power transmission efficiency in EV drives.

Hollow multi-radius planetary wheels balance axial twisting forces, improving torque transfer and reducing friction drive part count.

A power-split toroidal variator and compound epicyclic gear set widen ratio spread while improving CVT efficiency, compactness, and control.

Two planetary gear sets and four torque devices create fixed ratios that reduce electric machinery weight while maintaining optimal fuel efficiency.

Positioning a bucket wheel planetary gear set at the input end of a cavity carrier increases power density, solving slow torque rise during activation.

A disconnecting rear drive axle system isolates the propeller shaft and differential to stop power transmission when all-wheel drive is not required.

Dual pneumatic signals drive a shift collar to prevent carrier failure from stuck engagement, doubling return force.

Star compound gear rotary actuator manages torque distribution across four speeds, reducing friction and fuel consumption in stop-and-go traffic.

Three planetary gear sets and a dog clutch reduce spin losses while maintaining wide ratio coverage for lower fuel consumption.

A modular transmission module uses an epicyclic gearing system to switch between CVT and powershift arrangements via interchangeable shaft supports.