Portable Lifting TRIZ Cases

Electrochemical grinding enables small-wheel finishing of double helical gears, forming true gapless V teeth with low heat and burr-free surfaces.

Variable tooth thickness in a cam-driven gear train improves press-state engagement while cutting backlash, impact noise, and mounting constraints.

Alternating oblique web pieces connect hub and rim to cut parts, weight, and manufacturing cost while preserving gear rigidity.

A sintered powder-metal inner component bonds inside an outer ring to raise toroid strength and durability without high machining cost.

An extruded continuous profile cut to length replaces new molds for each ring gear variant, reducing cost and lead time in planetary gearing.

Variable damping engages only at larger angular oscillations, filtering start-up torsional vibration without adding drag during acceleration.

Embedded textile reinforcement and a tapered hub let a castable polymer sprocket handle high torque while reducing tooth cracking and weight.

Independently spring-mounted protrusions adapt to chain pitch wear, improving force distribution, reducing wear, and preventing chain detachment.

A projecting annular groove controls where oil leaves a toothed wheel, cutting unwanted wetting and reducing lubrication oil demand.

Angled side walls in a hollow transmission gear cut weight and rotational deflection while preserving stiffness, reducing noise and wear.

Varying pressure angle and tooth scale around a gear breaks meshing periodicity to suppress gear whine without sacrificing load capacity.

Independently rotating sheave subassemblies equalize tension across elevator ropes, reduce slippage, and simplify service with one modular design.

A conversion rack with curvature-matched teeth bridges linear and curved racks to maintain continuous pinion motion in semiconductor equipment.