Gearing TRIZ Cases

By learning the secondary pulley force at peak clamping ratio, this CVT control cuts excess hydraulic pressure without chain slip.

A sliding nut and lead screw coupling enables coarse and fine surgical tool adjustment while balancing compact drive layout with precise control.

A position-triggered brake and rotational damper control non-self-locking spindle speed during back-rest lowering, reducing abrupt motion and overload.

A two-push-rod wheelchair footrest adjusts height, angle, and leg reach to improve comfort across sitting and lying postures.

Grooved drum inner surfaces retain lubricant to stabilize spring-brake friction and cut actuator noise across temperature cycles.

A one-piece spindle nut and coupling element cuts door latch installation space while reducing friction, weight, and assembly complexity.

A fluororesin and vinylidene fluoride resin blend gives ball screw retainers chemical resistance, impact toughness, and better molding productivity.

A spiral-groove limit stop and motor torque feedback let a steer-by-wire wheel turn past 360° with fewer parts and lower complexity.

An extendable fragile section in the female screw member removes thread gap and steering column rattling with fewer parts and lower cost.

Inclined support tongues and metal reinforcement improve airflow and heat conduction to cool V-belt pulley bearings and extend service life.

A segmented belt drive decouples the fan from the water pump, enabling flexible cooling module placement and lower water pump load.

Adjustable spring arms raise belt force only during starting or full load, limiting slip while reducing normal-operation contact pressure and fuel use.

Axially self-aligning CVT sheaves maintain pulley radius under belt force, reducing wear while preserving efficient power transfer.

When a screw and operating nut stick, a decoupling mechanism lets the piston rod free-fall to full extension and lock safely in place.

A smoother belt outer face, rougher inner face, and pulley protrusions improve tensile strength, resist displacement, and stabilize drum rotation.

Current-limited hydraulic pump control keeps CVT primary pressure above the slip threshold during downshifts while preserving speed ratio control.

A helical rod threaded through linked hollow segments turns one motor's rotation into sinusoidal crawling motion for tubes, vessels, and rough terrain.

Axial cut-outs and a lock pin let shift rods connect after gearbox mounting, reducing disassembly work and blocking improper gear shifts.

Varying tooth phase wavelengths around the sprocket reduces chain tension fluctuation, order sounds, resonance noise, and vibration.

A motor-driven spindle replaces bulky rake linkages in steering columns, cutting space, cost, lash, and maintenance.

Pre-sterilized ratchet actuators use elastic levers to keep tooth engagement stable while avoiding repeat sterilization and reuse-related failure.

Insertion-rotation arm mounting and variable-thickness ribs improve heat dissipation in compact belt tensioners under thermal stress.

By nesting the torsion spring inside the base, this tensioner cuts axial height while maintaining belt timing and tension in oil environments.

Segmented slits and arc contact surfaces let a lens barrel cam follower absorb groove tolerances while preventing backlash and preserving mounting accuracy.

Low-friction movable guides keep a flat strap aligned through pulley housing windows, preventing twist, jamming, and edge wear.

A radially nested torsion spring cuts tensioner height while maintaining belt tension and camshaft-crankshaft synchronization in oil environments.

A breakable coupling lets a telescopic steering tube decouple and move during secondary collision, absorbing impact with less structural complexity.

Three-point contact lets a ball screw circulation component sit in a nut recess with clearance while maintaining stable rolling-element circulation.

A ring-controlled plunger tensioner keeps backlash low at start-up to cut knocking, then increases it during running to avoid excess chain tension.

A press-fit polymer pulley uses keyway torque members to replace machined steel parts, cutting ball nut assembly cost and time.

A gantry carriage and lift step let users ride standing while reducing corridor protrusion and preserving normal stair use.

Preloading the second tensioner arm against a stop stabilizes belt tension in hybrid drives, cutting transient stress, wear, and parasitic losses.

Curved variable-section beams homogenize anchor-point stress in pseudo-parallelogram guidance, extending fatigue life while preserving translation.

Curved contacts and a guide slot keep a rotating surgical adapter aligned, preserving electrical continuity and force transfer.

A dual-belt starter generator layout uses one-way and accessory clutches to decouple accessories from crankshaft speed and improve fuel economy.

A press-fitted seal with a sliding lip blocks foreign matter from entering tensioner sliding bearings while preserving radial gap tolerance.

By nesting the torsion spring inside the base, this tensioner cuts axial height while maintaining belt timing and preventing tooth jump in oil.

Radially closed nut pockets integrate deflection and support functions to shorten ball screw axial length and maintain a continuous ball channel.

A single lift point with shafts, link arms, and guide tracks simplifies packaging machine vertical motion and reduces multi-link failure risk.

Sequential engagement of small- and large-diameter gear portions increases protrusion travel for more reliable developer cartridge status detection.

A tooth clutch transmission lets wheelchair users shift forward, reverse, neutral, brake, and gear ratio without releasing the drive levers.

An adjustable pulley slot, torsion spring, and damping member help an MGU belt tensioner cut tension variation and power loss.

A two-axis spring tensioner keeps belt tension stable during reversible electric machine mode changes and compensates for belt elongation.

A rotating helical rod drives linked hollow elements to create smooth sinusoidal motion with one motor, avoiding helical distortion and excess weight.

A split bushing ring with O-ring bias centers the lead screw in the nut, cutting vibration, noise, and clearance-driven positioning error.

A vented bearing plate links bellows air spaces to equalize pressure, dissipate spindle heat, and keep contaminants out.

Preloaded friction springs and a fitted bearing create backup load paths and a visible gap change to reveal actuator component failure.

A detachable clutch handle keeps the gearbox sealed against moisture while making unauthorized winch disengagement and cable theft harder.

An adjustable pulley tensioner compensates belt and assembly tolerances to maintain optimal accessory-drive tension with lower energy loss.

Tabs, grooves, and aligned fasteners join hub and clutch cylinder to strengthen torque transfer and reduce input drum failures.