Gearing TRIZ Cases

Flow-reversing pistons use pressure differences to keep drill-bit rotation one-directional while reducing stalling and pressure fluctuations.

Cylindrical rollers and symmetric fixed members cut axial bearing load, reducing torque loss and enabling a more compact speed reducer.

A racetrack airflow path and inlet diverter cut pressure drop and backpressure in CVT transmission covers, improving component cooling.

A preloaded spring and stop on the bearing journal enable precise sprocket axial alignment without spacer discs or repeated disassembly.

Threaded nuts on a bearing journal enable precise sprocket axial adjustment without spacer discs, cutting round baler chain drive assembly time.

A nested spindle and selective coupling layout extends steering column adjustment travel while lowering drive torque, size, and weight.

Bearing segments support axially driven teeth to raise torque transmission while cutting component count and simplifying assembly.

Combining a planetary stage with a tension belt drive achieves high gear ratios in a lighter, quieter, low-maintenance EV transmission.

Distance-based limit sensing tracks nut position during threaded rod rotation to prevent overclamping or unclamping of aerial platform antennas.

Freely movable thread elements adapt to changing spindle pitch, simplifying spindle gear production while preserving force, torque, and travel flexibility.

A narrow-neck assembly groove locks the ball screw circulator against radial shift, improving smooth operation and easing small-nut assembly.

Diametrically opposed bearing elements support a steer-by-wire coupling rod to prevent twisting, ease assembly, and reduce friction.

A switchable spindle coupling balances precise positioning with high clamping torque, enabling automated tool presetting without holder displacement.

Variable friction damping adapts belt tensioner torque by arm position and direction to suppress hybrid drive oscillations without excess drag.

A two-piece circulator simplifies open nut ball screw assembly, improves ball race alignment, and avoids sag-related rolling errors.

Conductive damping between the base and ring grounds the pivot arm, dissipates MGU charge buildup, and eliminates sparking.

A steer-by-wire spindle drive uses asymmetric roller screw efficiency to stay self-locking under lateral loads without extra locking hardware.

A two-arm tensioner uses an internal working arm and elastic element to absorb belt tension peaks while cutting size, weight, and cost.

A cam-lock crossbar clamp secures the hitch shank against the receiver lip to resist loosening, rattling, and wear in harsh conditions.

A cam disk and shouldered displaceable teeth cut contact forces, reducing heat buildup and abrasion while preserving high transmission ratios.

A protruding part on the rocking lever prevents plunger bottoming during oil-supply delay, cutting start-up noise, vibration, and breakage.

A deformation stopper limits strong flexspline strain to improve harmonic reducer engagement accuracy, wear tolerance, and precision life.

A formed relief section in the sleeve thread replaces cutting, avoids chips, and improves ball screw nut strength and deflection reliability.

Frustoconical guides and unidirectional sprockets keep chain tension stable, cutting CVT slip, vibration, wear, and power loss.

Differential torque between two inputs shifts split-pulley halves for rapid, controllable ratio changes without separate actuators.

A PEDM terpolymer blended with an ethylene-based copolymer improves belt tack and green strength without the cost or stability tradeoffs of tackifiers.

A shield isolates grease from the high-speed forming element, preventing dehydration and sustaining bearing lubrication in strain wave gearing.

Distinct sprocket tooth curvatures shift chain articulation to cut friction, wear, energy loss, and chain elongation under load.

A locally reinforced outer gear ring boosts rigidity in a deformable wave gear mechanism, improving torque capacity and rotational accuracy.

A recessed transition between the guide surface and end face reduces pulley stress concentration while preserving CVT ratio change.

A toothed actuator with advance and hold pawls turns short SMA strokes into larger motion, enabling compact low-cost actuation.

An integrated shaft cap seals end channels and retains the seal plate, cutting clutch assembly complexity while maintaining fluid containment.

A ratchet-guided sled and pulley tensioner replaces crank-style window hardware with compact linear actuation that preserves the viewing area.

Axial rotation restriction and metal-powder resin molding reduce pulley thermal contraction variation and preserve tooth tip accuracy.

Spherical-cap bearing segments let axially driven tooth pins tilt under load, boosting torque capacity, rigidity, and wear resistance.

Optimized return-path angle in an internal deflector ball screw reduces ball entry-exit fluctuation, improves load balance, and avoids deformation.

A metal cylinder with a plastic intermediate thread boosts pushing-rod nut strength while cutting screw friction, noise, heat, and thread stripping.

Pressed bearings and a retaining ring replace nut-and-spring preload control, cutting assembly complexity, noise, and stiffness variation.

A one-piece bearing and radial stop element limits spindle nut travel without self-locking, cutting loosening torque and assembly effort.

A wire-and-pulley end tool maps hand pitch, yaw, and actuation to jaw motion, reducing control confusion during bending.

A variable-ratio gear train keeps magnetic base switching torque within human limits while preserving strong latching force on ferromagnetic surfaces.

Electromagnetic spindle feed and screw gearing limit cutting forces to prevent chipping, cracks, and tool damage in brittle materials.

Rotary-to-linear pusher actuation with energy absorption and current sensing enables softer conveyor stopping and package diversion with less wear.

Conical gears and eccentric wheels improve swing amplitude, reduce wear, and make olive picking machines more compact and stable.

Segmented laminated die plates cut hydraulic forming cost for ball screw nuts while preserving shape accuracy and local durability.

An undulating surface cam and collinear shaft layout convert rotary motion to reciprocation while reducing friction, wear, and pump drive size.

A preload-triggered bypass shoe carries rare peak loads around the balls, cutting hardness requirements, wear, and ball screw cost.

By slipping a selected clutch and gear to form a mechanical short circuit, this case boosts low-gear off-road braking without higher pedal force.

Radially nested gears and a dual-tooth flex spline simplify compound harmonic drives while lowering inertia and preserving high torque density.

An elastomeric toothed belt replaces the deformable metal sleeve to simplify strain wave gear manufacturing while maintaining high torque and efficiency.