Portable Lifting TRIZ Cases

See how a segmented roller with resilient latching elements prevents traction device slippage a

Dual retractors and sensor feedback guide wheelchair loading on vehicle ramps while reducing manual steering effort and injury risk.

An axially movable sprocket and flexible member restriction reduce precise positioning needs while maintaining power transmission.

Adjustable guide rollers and feedback control correct lifting-part tilt caused by winding and cable-thickness errors during overhead transport.

Actuated pawls let a planetary ring gear ratchet one way and lock the other, enabling compact EV transmissions with selectable ratios and higher torque.

A winch-raised post and support bar stabilize semi-trailer roofs during frame rail repair while cutting setup and removal time.

Sensors and motorized tie-downs track wheelchair position, direction, and speed to prevent ramp-edge drift and secure loading.

By nesting the drive shaft and clutch within the rotor, this case cuts axial length and casing diameter in electric chain blocks.

A tapered worm with a defined tooth-bottom end angle simplifies manufacturing while reducing unbalance, runout, and operating noise.

An offset tooth-bottom end layout keeps the worm within a sub-90° angular range to improve rotational balance while simplifying end machining.

Through-hole fold and tilt gears simplify rear view mirror actuation, cutting noise, weight, and cost while keeping rotation limits precise.

Dovetail recesses lock replaceable drive sprocket teeth in tracked vehicles, cutting maintenance effort and downtime from wear.

Trailing-side mud discharge grooves cut through sprocket thickness to expel mud by centrifugal force and prevent chain wear and dislodgement.

A plastic ring between housing and ring-gear toothings damps vibration, cutting metal-contact noise while preserving torque transfer.

Arc-shaped gear engagement raises reduction ratio in a compact speed reducer while avoiding tooth interference and preserving reliable meshing.

A spring-loaded locking mechanism rewinds tie-down media faster while reducing operator injury risk and eliminating drill-based rewinding.

A rotatable electrical connector lets a track support assembly engage or disengage conductors for secure connection, easy adjustment, and removal.

A single pin with multiple diameters locks paired truss fittings, cutting assembly time and labor in endwise section joining.

Dual meshing gearwheels switch translation ratios to deliver high starting torque and faster adjustment with a smaller motor package.

A seat belt buckle anchor lets a portable winch load heavy cargo into standard vehicles without custom mounting or high manual effort.

Overlapping gear meshing turns falling load into supportive tooth contact, enabling single-bearing support and a thinner, efficient motor reducer.

A nested inner and outer worm wheel structure boosts strength and precision for high-power steering reducers while cutting vibration and noise.

A strap-actuated release assembly disengages an overhead lift's electromagnetic brake from below, enabling smooth manual strap pay-out without ladder access.

A pulley and rope lock redirect hoist loads closer to the hitch receiver, reducing cantilever force and preventing rope overwrapping.

Motor rotation is corrected for changing belt winding diameter, improving holder elevation accuracy during raising and lowering.

A two-material gear wheel combines a stiff support body and elastic toothing to save brake actuator space while maintaining strength.

Phased reciprocating propelling teeth drive a seat gear rack with wedge friction surfaces for smooth, low-play motion and adjustable breaking load.

Electrical gear-contact sensing feeds the control unit with current gear position, enabling automatic ATV transmission shifting with usable gear information.

A metal core with a resilient elastomer outer layer improves sheave liner durability, fit, and replacement without precision machining.

Curved tooth flanks and tooth heads reduce gearbox break-in wear, improve contact stress distribution, and raise load-bearing capacity.

A deformable retention feature keeps slack rope seated in the snatch ring saddle, preventing dislodgment and reducing wear during winching.

An annular injection gate and hot runner improve resin filling and cooling in worm wheel molding, preventing cold slugs, noise, and vibration.

Offset epitrochoid tooth flanks suppress speed variation and wobble in externally toothed circular and non-circular gear meshing.

Annular insert flow paths feed molten resin to tooth bottoms, aligning fibers, moving weld lines to tooth tips, and lowering gear molding cost.

Conical raised sections and a matching bushing keep the worm shaft aligned and prevent wear-related rotation in stairlift drives.

Ship-bow-shaped groove sections guide lubricant into the contact area, improving retention and stable rack guide lubrication during sliding.

A pivoting, sliding, and protruding gear mechanism cuts backlash during direction changes to improve speed follow-up and reduce gear noise.

A moisture-expanding bearing damper shifts the worm shaft bearing to limit backlash, suppress EPS rattle noise, and protect gear teeth.

A lever-and-roller rope grab increases friction on the rope to enable single-person lifting with varied rope types and safer load control.

Different holding portions give a worm drive higher friction in one direction and lower friction in the other, reducing load variation and improving stability.

Spring-guided worm support aligns displacement under changing engaging forces to suppress backlash, tooth collision, and impact noise.

A two-material helical gear uses angled reinforcement sections to cut noise while preserving strength, compact size, and molding efficiency.

Partially missing gear teeth and matching engaging portions simplify phase alignment, improving assembly reliability without extra pins or holes.

A modular hub-crown filtering unit uses springs, damping, and rolling support to raise torque capacity while cutting size and assembly cost.

Thin welded discs between the hub and ring gear cut assembly weight and reduce noise by limiting distortion from conventional processing.

Shallow recesses on both gear surfaces keep reinforcing fibers evenly distributed while preserving resin-to-metal bonding strength.

Oblique openings and reinforcing ribs matched to the helix angle cut gear noise while preserving strength in injection-molded plastic gears.

A 360-degree annular groove relieves residual stress in laser-welded differential ring gears and carriers, preventing cracks without pre-heating.

A movable first gear absorbs tooth-tip collision in fixing-device drives, preventing PPS gear damage in high-temperature operation.

Direct sensing of hydraulic flow and piston travel improves tendon stress accuracy, reduces human error, and avoids pinch hazards.

An integrated hub, actuator, and elastic filtering group damps start-up torsional vibrations while cutting pulley complexity, cost, and contamination.

A surrounding band presses gear teeth inward to absorb vibration, cut meshing noise, and preserve rigidity for reliable torque transmission.

A compressible gear in a spur-beveloid roll train absorbs manufacturing variation to reduce backlash and improve shaft rotation control.

A labyrinth dust lip blocks debris between hub and crown, cutting noise and wear while preserving torsional vibration damping.

A one-piece sintered toothed part forms teeth and bearing seats directly, cutting machining while enabling compact high-torque transmission.

Circumferential preload on elastic groups damps torsional vibration while cutting pulley noise, wear, and energy loss.

A conjugate-curve tooth pair keeps meshing stiffness constant and sliding ratio low while enabling single-cutter machining and quieter gear transmission.

Axially spaced partial carriers support a toothed ring to deliver high single-stage EV gear ratios with lower weight, losses, and noise.

A locking cam and pulley layout keeps the safety rope retained while simplifying one-handed rescue setup in compact climbing gear.

Spaced plastic molded sections on a metal insert shorten flow paths in steering gearwheel molding while preserving load capacity and service life.

Using encoder position and cyclic motor torque variation, this hoist case suppresses load chain vibration without added mechanical parts.

Alternating alpha and beta drum grooves with stacked pulleys prevent line overlap, cutting wear while enabling gearbox-free linear motion.

Continuous conjugate tooth curves enable same-cutter machining, zero sliding ratio, and constant meshing stiffness to cut gear noise and cost.

A varying pressure angle along the meshing line strengthens the small gear tooth root while preserving smooth, uniform gear meshing.

By setting the pitch point inside the tooth tip circles, this gear layout reduces friction and abrasion while improving oil film thickness.

Steel teeth are added only where hammer-drill torque peaks, keeping the gearwheel stable, balanced, and under 150 g.

Involute asymmetrical sprocket teeth extend chain contact to spread load, cutting thrust chain noise, vibration, wear, and maintenance.

A two-plate gauge and pin create a fast go/no-go check for sprocket tooth wear, helping prevent roller skipping and unplanned downtime.

Tangent-aligned ribs raise axial and torsional rigidity in a compact gear wheel while reducing weight, space, and molding flow issues.

Backlash is measured at multiple pinion positions from the gearbox input side, enabling precise rack-pinion setting with less manual effort.

A metal insert forms the return spring hook inside an overmolded gear wheel, improving hook strength, demolding, and material efficiency.

An undercut at the integral gear-hub interface relieves bevel tooth root stress and reduces failure under intermittent marine drive loads.

A split worm with a housing and insert forms a continuous thread, making shaft installation, removal, and repair easier while reducing breakage.

Magnetic coupling lets two single-sheave pulley blocks form a lighter double-sheave assembly with less rope twist and easier rigging.

Embedded permanent magnets in reduction gears replace adhesive mounting, cutting axial play, size, and wear in multi-turn shaft angle sensing.

A recessed annular wall and reinforcing rib cut differential gear weight while storing oil for continuous lubrication and cooling.

A metal gear hub with undersized teeth gains a polymer outer layer to raise torque capacity while preserving low noise and vibration.

A deformation-based form-fit joint connects sun gears and planet carriers across different materials while keeping assembly strong and cost-effective.

A graphite and liquid polyolefin oligomer blend raises torsional damper damping while preserving durability, processability, and temperature stability.

Unequal drive and coast pressure angles cut contact stress, heat, and pitting in planetary gear trains for longer service life.

Localized pressing in the tooth thickness direction maintains density during rolling and prevents internal cracks in sintered gear teeth.

Movable guide flange segments on an elevator traction wheel block axial belt drift while reducing climbing, edge tension, and wear.

A resin and high-conductivity gear pairing improves heat dissipation, wear resistance, and weight reduction in bending meshing gears.

Spaced inner, outer, and guide rings improve track lug alignment, cut backlash and wear, and help prevent lateral derailment.

Rod-shaped spring sections shift preload into the axial direction, cutting radial space and simplifying backlash-free gear assembly.

A split pinion and radially fitted housing let rack-and-pinion transmission units be installed anywhere on a driveshaft without end access.