Metal Working Apparatus TRIZ Cases

A spring arm locks a replacement blade inside a folding knife handle, then releases it for quick, tool-free replacement.

A pivoting hinge and locking mechanism orient an electric shaver for independent access to the back and head without assistance.

Angled surfaces, raised sidewalls, and repositionable dividers keep plastic wrap rolls stable, accessible, and protected in industrial work areas.

Closely spaced blades can clog and pull longer beard hair; a partitioned cartridge separates blade regions for more comfortable shaving.

Independent cutting and accessory units process separate mat areas simultaneously, reducing alternation downtime in long nestings.

Precise 0.70–1.25 mm blade gaps and guard spans balance hair removal efficiency with reduced nerve stimulation and clogging.

The slide lock covers the guide and locked parts to stop accidental opening while a magnet holds the blade steady and limits rattling during carry.

An airbag-driven release lifts the snap-fit fastener, simplifying worn shaver-head replacement and extending shaver service life.

Trailing-edge hair-abutment surfaces hold hairs stationary for slicing, improving hair-catching performance and reducing skin irritation.

Flexible curved blades conform to skin for closer cuts, while coatings reduce friction and irritation during grooming.

Zoned perforations and edge comb teeth support short- and long-hair cutting while reducing pulling, heat, and skin discomfort.

A mounted adjuster shifts the moving blade for precise zero-gap setting, stable alignment, and less nicking without disassembly.

Removing the internal battery lets a portable trimmer draw power from a mobile phone through USB-C, avoiding charging and replacement.

High-pressure water jets cut and lift multilayer composites without heating, separating valuable layers while reducing energy use and material loss.

An inclined guiding channel converts rotation into axial movement to synchronize exposure distance across rotary shaver hair-cutting units.

A single reversible comb implement fits two trimmer heads, aligning tooth pitch to guide hair while reducing manufacturing complexity.

Weight and length measurements guide slice thickness and count to meet minimum portion weights while reducing giveaway and incomplete portions.

A larger center shearing angle and a pressing member stabilize rubbing load when cutting softer printing media.

Location and usage time guide automatic parameter changes to limit over-treatment and reduce discomfort in sensitive body regions.

A dual-guide shaving head uses different comb-tooth lengths to guide long, messy, and short beards before clean cutting.

A recessed, pivoted actuator and captive tension member reduce grip interference and accidental deployment while supporting knife opening.

Projected light marks guide position-variable stops for different food geometries, reducing manual errors and changeover time.

Movable delivery devices switch between retracted and deployed positions, supporting multiple adhesive pad types without stopping deposition.

A higher-power heat-up phase rapidly warms the skin-contacting surface, while reduced power helps maintain 40–50°C without burns.

Magnetic handle retention keeps the razor secured inside a two-part cover while avoiding blade and lubrication contact that can cause damage.

Resilient latches and a tang receiver let one knife handle accept interchangeable blade assemblies with secure retention.

Multiple blades widen the cartridge and destabilize trimming; a seating groove and capped elastic fixation improve curved-area shaving durability.

A through-handle digit opening and rear indentation improve grip stability and shaving control for users with fine motor difficulties.

Infrared detection identifies each interchangeable cutter head so the control board can set drive speed automatically for its cutting type.

An elastic arm supports one blade while another remains more exposed, balancing effective hair cutting with reduced irritation and cuts.