Pins TRIZ Cases

Eccentric inner and outer wheels with cam-driven punches raise nail output while preserving precise nail head shaping and clean discharge.

Melting and cooling a thermoplastic projection secures aircraft EME protection caps without sealants, cutting rework, labor, and install time.

A holding member keeps the coupling screw stable yet accessible from both sides, preventing fall-out and protrusion during insert mounting.

A free-spinning protective cover blocks tool engagement on engine threaded elements, preventing unauthorized adjustment of critical settings.

A removable plug blocks Allen-key access in standard fastener sockets, using magnetic retention and Morse-taper extraction without bolt removal.

A locking plate and specialty-tool latch block unauthorized carburetor mixture adjustment while preserving factory-set emissions compliance.

Opposite-hand nested fasteners linked by a rotating joint resist vibration loosening and provide tamper-resistant reuse without thread compounds.

A retained bolt and resilient spring element let a slot connector release quickly without shaft pullout or reassembly.

A nested screw, washer, and conductive sponge structure prevents part drop-off while maintaining chassis electrical conduction and easier assembly.

A synchronized combination core and latch mechanism secures vehicle wheels against theft while reducing the need for multiple tools.

Two buckled retaining rings secure the fixing element inside the housing, preventing dropped parts and PCB short circuits during unlocking.

Elastic spring elements grip the fastener head to preserve bolted joint locking friction through repeated loosening and retightening cycles.

A dual-movement captive fastener uses radial float and biasing to secure structures despite alignment variation and manufacturing tolerances.

An internal cylindrical tool surface and restricting collar block fraudulent removal while keeping mounting simple and avoiding hole filling.

A sleeve that snaps onto a press-fit nut retains the screw, prevents cross-threading, and cuts captive screw component cost.

A rigid locking member engages both the fastener and structure to prevent loosening under vibration without split pins or safety wire.

A frangible heat-resistant cover shields weld nut threads from weld flash, coating, and paint while allowing easy final fastener insertion.

A floating clip nut in a one-piece plastic cage transmits torque through curved contact surfaces, simplifying assembly and reducing fastener complexity.

Rivet nuts and microencapsulated epoxy resin replace welding on turbomachine supports, cutting assembly time and preventing oxidation without painting.

A plastic twisting die cuts friction when forming steel threaded rods, reducing buckling and surface damage while increasing throughput.

Radially projecting spring-arm corners and a slotted ring improve torque transfer, insertion, and secure mounting in compact tolerance compensators.

Inclined spring latching edges let one fastening clip grip threaded and smooth bolts securely while keeping assembly and removal simple.

Opposing tabs capture the T-bolt head to prevent rotation and accidental disengagement while accessories are loosened and repositioned.

Guided supports and snap-fit alignment let a larger aircraft fire-extinguishing tank be installed and removed quickly in a crowded mast.

A threaded male member with built-in reaction ends absorbs counter-torque for safer nut release while supporting anti-rotation locking.

A pin-and-clip fastener uses a non-parallel pin axis and retainer flange to stop rotation, prevent displacement, and reduce mounting wear.

A cap nut overlaps the anti-rotation pin to stop follower rotation, protect sensor leads, and prevent pin ingestion in engines.

A clip-and-pin fastener restrains rotation to reduce wear and displacement, yet rotates free for safe pin removal during maintenance.

A rigid cap with segmented inner and outer seals blocks moisture around the fastener while avoiding the wicking paths of flat washers.

Radial plastic deformation locks a disc onto a connector shaft while keeping a near-circular outer profile for uniform head contact and sealing.

Dual movement in the sleeve and mounting assembly lets captive fasteners absorb tolerance variation while keeping structures securely aligned.

Expanding grommet tabs cut insertion force while securing panel retention and preserving noise and vibration isolation.

An intermediate cone and axial stop improve repeatable workpiece-to-carrier alignment while easing release and reducing precision machining demands.

Dual compensation units handle longitudinal and transverse misalignment, enabling faster vehicle component fastening with stable bolt locking.

A double-locking cap and nut secure the valve set screw against tampering and vibration while preserving authorized adjustment access.

A tubular bolt retainer locks both bolt and component in place before assembly, reducing manual support when mounting heavy ground engaging tools.

A floating sleeve fastener secures acousto-optic covers without deforming passageways, improving alignment and replacement.

A retained bolt and resilient tubular element prevent shaft pullout during release, avoiding reassembly while keeping slot clamping reversible.

A captive clamping nut and claw element simplify hose assembly and dismantling while preventing loose parts and alignment issues.

A coded body and locking element use a preset combination to secure a cover over a hole and block unauthorized removal.

A threaded plug hidden inside a valve uses a polygon tool recess to block unauthorized removal and reduce fluid theft.

A pivoting hook anchor and shackle simplify installation, cut extra parts, and keep loads securely retained inside a support case.

Two-shot molding joins a flexible seal to a rigid fastener with a dovetail interface to prevent separation and improve panel sealing.

A curved-and-plane press-fit die fixes groove orientation, cuts wear, and speeds nail die replacement without losing position precision.

Plate-like resilient tongues let screws shift radially to match threaded holes while preventing dislodgment in through-holes.

A dual-bore washer retains the nut and gasket to prevent slurry egress, reduce wear, and speed mill liner maintenance.

A solderable fastener body enables rapid plate joining while maintaining firm attachment and easier separation than screw-based assembly.

A hollow A286 screw uses annealing, thread rolling, and hardening to cut aircraft fastener weight while resisting thread galling.

Radial projections in the pump mounting opening hold the screw element during transport and installation, preventing slip and misalignment.

Localized high-friction washer treatments stop rotation, reduce side load and thread galling, and keep bolt torque more consistent.