Toothed Gearings TRIZ Cases

A compound planetary gear set with shared rotation elements achieves eight forward and two reverse speeds using clutches and brakes.

A hybrid speed reducer combines flexible and rigid stages to achieve high reduction ratios.

A single cam apparatus drives platen and paper pickup rollers to reduce thickness and weight of portable sublimation printers.

Dual torque transmission paths synchronize input shafts via friction clutches, reducing actuation force and eliminating central synchronization devices.

Dynamic engine speed thresholds adapt to road grade and acceleration demand, balancing reduced driveline noise with effective engine braking torque.

An asymmetric fan driven by a planetary gear train with free wheels adjusts speed ratios to maintain cooling efficiency in bi-directional rail traction drive units.

A vehicle hatch drive uses a double transmission unit with worm stages for compact gear reduction.

A compound planetary gear set with a brake member enables multi-stage variable-speed rotation in a compact structure.

Four planetary gear sets with shared shafts reduce part count and weight while maintaining power transmission efficiency across ten forward gears.

Rolling members between gear cases and lower rails absorb shaft whirling, reducing abnormal sound and temperature increases in the sliding assembly.

A vehicle drivetrain method manages shift elements to enable sailing mode transitions while the drive machine remains active.

A method fully opens shifting elements in an automatic gearbox to interrupt torque transmission during gear disengagement.

A transmission mechanism uses a one-way bearing and clutch to transfer power efficiently in low-speed vehicles.

A roller transmission mechanism uses guide tracks to maintain pure rolling contact between driving and driven bodies.

Two phase-offset strain wave reduction gears cancel secondary vibration components to reduce angle transmission errors in rotary actuators.

A winch clutch uses locking members and biasing arms to fix or free the ring gear.

Supporting members penetrate external gear holes to reduce radial forces, extending bearing life under high-torque loads.

Spherical interface segments enable continuous multi-directional adjustments, eliminating iterative shimming to correct tilt errors and reduce alignment time.

A cycloid pinwheel reducer uses eccentric transmission gears to rotate pinwheels for dual-level speed reduction.

Right-angle bent annular flange repositions mounting interface axially to expand hollow diameter without increasing outer diameter.

Merging four planetary gear sets reduces part count and weight while enabling ten forward shift ratios for improved fuel efficiency.

Segmented input paths decouple engine and motor rotation, resolving clutch engagement impacts while maximizing fuel efficiency.

Five planetary gear sets in an automatic transmission achieve ten forward speed stages while reducing drag loss and improving torque delivery efficiency.

A control device manages friction engagement elements in automatic transmissions to optimize gear shifting performance.

Planetary gearset connects actuator motor to shift rod, reducing system complexity and failure rates in marine drive transmissions.

A hydraulic control apparatus reduces shift valve count using solenoid valves and spool valves with elastic members.

A transmission controller adjusts surge hydraulic pressure to manage frictional element engagement speed during gear shifts.

An eccentric adjustment tool uses meshed gears to rotate a bushing, displacing an aperture along its diameter for precise stay length modification.

A vehicle powertrain integrates a rotating ring and friction clutch to implement limited slip differential functionality within the main shaft assembly.

Stacking planetary gear sets in axial planes produces eight forward ratios and a low range mode without increasing transmission length.

Integrated bearing retainer directs pressurized hydraulic fluid through axial and radial bores to planet gears.

A method for operating an automatic transmission with at least five shifting elements to enable consecutive gear changes.

A gear transmission uses a flexibility portion to rotate the support shaft, resolving ground-contact reaction forces that block shift gear engagement.

A double pinion planetary gear set drives the output via a large radius ring gear to minimize transmission size.

A planetary gear train configuration with four sets and six control elements reduces transmission length.

A vehicle power unit clutch actuator positions valve bodies to overlap hydraulic clutches along the main shaft axis.

Integrating four planetary gear sets into a single assembly improves fuel consumption while maintaining compact installability.

Radial engagement reduces axial stroke length while maintaining reliable clutch connection for faster mode switching.

A switching unit directs driving force to rollers or a movable ejection flap, preventing simultaneous operation and reducing manufacturing costs.

A control apparatus reconfigures hydraulic pressure supply to enable simultaneous operation of speed selecting mechanisms.

A control unit monitors positive shifting elements and opens non-positive elements to terminate power flow.

A planetary gear train configuration using three planetary gear sets and five control elements to deliver eight forward speeds.

Face width-enlarged portions on a die-forged rack bar overcome limited material plastic flow, ensuring sufficient tooth width for improved pinion contact.

Segmented planet wheels reduce stress concentrations and simplify assembly by distributing torque via independent hinge pin mounts.

Nested planetary gears within annular rings resolve packaging complexity while achieving axial space savings and wider gear ratio range.

Four nested planetary gear sets with merged shafts deliver twelve forward shifts while minimizing transmission length and component count.

A dual clutch transmission uses overlapping clutch engagement to shift between forward and reverse speeds.

A planetary gear driver uses a resin outer gear to reduce weight while maintaining structural integrity.