Gearing TRIZ Cases

A dual-pulley tensioner with parallel rotating elements and a spring maintains belt contact during sudden load changes and belt elongation.

First- and second-order gear ratio thresholds, plus heat, time, and hydraulic pressure, separate true CVT belt slip from shift transients.

A nested spindle steering column drive extends adjustment travel while lowering torque, weight, and installation space in motor vehicles.

A motor-driven pinion and crown gear lock secures a screw-nut actuator in retraction, cutting weight, bulk, and accidental deployment risk.

Integrated reservoirs, passages, seals, and a track wiper recirculate lubricant in a ballscrew ballnut to cut leakage and extend relubrication intervals.

Direct shaft coupling replaces gear-linked roller drive to reduce jitter and stabilize drum and developer roller rotation for better print quality.

An internal reducer-to-ball-screw coupling shortens the servo cylinder and removes external support parts for compact automation layouts.

A sealed self-adjusting chain tensioner keeps snow blower auger drive tension stable, cutting noise, wear, and debris contamination.

A fixed and movable engagement layout lets an integrally molded chain guide absorb thermal expansion without restricting shoe movement or causing breakage.

Six contact points, dual arm linkages, and rotatable wheels fold and unfold empty cargo containers with lower force and safer handling.

A cam follower, pre-compressed spring, ball screw, and clutch keep elevator brake force stable with pad wear while enabling rapid reset.

A rotatable pulley and hinged bracket let a Bowden cable route in multiple directions, easing door packaging while preserving soft-close cinching.

A cam-driven latch with rolling lever contact keeps a lifting hook locked under load and enables controlled release without accidental opening.

A housed slip ring and brush interface blocks dust and corrosive gas, keeping ion meter electrode rotation electrically stable with less maintenance.

A same-side interface layout shifts load from the plastic gear housing to the spindle and lock nut, reducing axial play and improving durability.

A summation planetary stage combines forward and reverse power paths to create crawler gear without extra gear sets, cutting transmission size and cost.

A housing-mounted actuating element switches off a threaded spindle actuator at end positions while keeping axial clearance low.

Stacked thin nut plates form threads without long cutting tools, cutting machining time and enabling coating control and backlash adjustment.

A segmented resister clip separates locking and spring functions to cut plunger friction loss while maintaining chain tension and setback locking.

A vented dual-seal arrangement limits lubricant leakage and improves helical raceway distribution during ballscrew reapplication.

A radial shear element acts as a mechanical fuse, decoupling concentric drive members to protect milling machine drive trains from torque spikes.

An obround sprocket with tuned phase and radius variation cuts timing error, belt tension fluctuation, and engine vibration.

A hub drive feature lets standard tools rotate a press-fit pulley, easing elastic belt installation in tight spaces while reducing belt damage.

A plastic flange around a metal nut holds spindle position by friction while adding a safety end stop and precise actuator travel adjustment.

One motor drives two oppositely threaded ball screws to cut actuator weight and motor count while seals protect internal parts from contaminants.

An elastic spiral spring stores and releases energy to vary gear ratio automatically, smoothing torque delivery for changing load and terrain.

Coupled levers and cams give catheters and endoscopes one-finger 360-degree articulation with better leverage across multiple planes.

A friction disk and pawl brake screw rotation during thrust reverser deployment, limiting accidental extension while reducing actuator weight and stress.

A roughness-controlled nonmagnetic metal belt and pulley protrusions improve friction, durability, and stable photosensitive drum rotation.

Reinforcement sliders and spacers support the screw in long-stroke window and shading actuators, cutting bending, noise, and wear.

Varying tooth working pressure angles lets the sprocket adapt to torque cycles, cutting tension fluctuation, noise, and vibration even at low chain tension.

A plate-based retention feature contacts the lower jacket bridge to stop rearward overtravel and keep the steering column assembly intact.

Casting or thermoplastic forming of metallic glass flexsplines cuts machining cost while preserving fatigue, wear, and load-bearing performance.

A low-current motor, planetary gearbox, and coarse-pitch drive screw cut actuator noise and vibration while preserving torque in long tubular housings.

Stamped metal construction, laser-welded spring and shaft, and an arcuate damper cut tensioner cost and weight while holding belt tension.

A movable sealed member and biasing spring stabilize tensioner oil pressure, cutting oil loss and restart noise with a simpler structure.

Multiple motor-driven cabs move in a 3D rack matrix to speed high-bay storage access while reducing heavy lift guidance and drive demands.

Fine tooth pitch and glass or polyarylate twisted cords suppress belt speed variation while keeping durability and low motor load.

A split drive layout places the driven unit and output gear without widening the powder container, enabling compact waste toner conveying.

Dual-feedback control and a flexible hinge help a ball screw motion platform overcome friction dead zones and maintain high-precision positioning.

Transverse drive-chain motion sensing and resonance-based evaluation enable continuous tension control, lower wear, and stable people conveyor operation.

Radially offset, axially aligned gear sets simplify compound harmonic drive manufacturing and cut rotating inertia for continuous output rotation.

Curved cam sliding surfaces keep the cam angle stable as clutch shoes wear, maintaining assist thrust and reducing friction member abrasion.

A temperature-responsive movable piece varies oil leak path resistance to keep chain tensioner damping stable across oil temperature changes.

A spring-biased enclosure keeps blind loop controls inaccessible to children and pets while still allowing manual or motorized operation.

Rolling-ball harmonic drives replace elastomers and sliding transfers to deliver downhole rotary motion with less wear, vibration, and heat limits.

An Oldham coupling and nested hysteresis brake ease spindle drive alignment tolerances while keeping vehicle flap actuation compact and quiet.

A radial external relief hole lets oil discharge laterally, simplifying tensioner assembly while lowering flow resistance and stabilizing chamber pressure.

A short, rigid transition region in an eccentric double wrap spring prevents energy absorption and enables immediate braking on torque reversal.

A dual torsion spring and wave spring layout maintains belt preload in both drive directions while damping oscillation in start-stop engines.