Spanners TRIZ Cases

Inclined protrusions create clamping force on rounded bolts, preventing slipping during rotation.

Transfer molding creates integral washers on wrench covers to prevent sealing ring displacement and internal contamination.

A rotary fastener driving tool uses a segmented drill bit with stepped shoulders to engage various hook and eyebolt sizes.

A torque wrench adapter system uses digital computation to calculate precise force settings for specific mechanical setups.

A limit switch assembly stabilizes digital torque wrench readouts by comparing real-time measurements to a set value.

A torque socket uses a mechanical locking mechanism with friction surfaces to securely attach drive heads without magnetic interference.

Segmentation and intermediary guide rails replace ring switches, enabling thumb operation without two-finger pinching.

A toggle member engages a slidable jaw to deliver force, eliminating cam collapse under high torque.

A fuel line disconnect tool uses a slotted handle head to receive interchangeable semi-cylindrical adapters for gripping lines.

A tool kit positions a broken porcelain insert inside the hollow metal spark plug tip to create a secure gripping surface for extraction.

A movable stop rod and tensile spring adjust to various gear sizes, eliminating the need to reverse the tool during mounting.

Speed increasing bidirectional mechanical converter uses a planet gear unit to transmit torque and reverse rotation direction.

Rotating auxiliary handle decouples from main rod to eliminate hand collisions during operation while maintaining structural simplicity.

Segmented engagement surfaces in a magnetic sleeve mount guide installation while minimizing air gaps, preventing breakage from pressure buildup.

A wrench guard uses a magnetic channel to secure tool handles and expand grip surface area for improved user comfort.

Detection unit identifies erroneous angle measurements in rest state to prevent incorrect screw connections and ensure operational safety.

Axially parallel recesses in the union nut engage wrench cams to prevent slipping during tightening, resolving tool damage risks.

Oblique dual screens resolve viewing angle conflicts, enabling accurate torque observation without shifting user sight lines.

A screwdriver control method switches off the motor at a defined cutoff rotational speed to achieve precise torque regulation.

Segmented heads on an elongated handle access confined areas, resolving clearance issues during tightening operations.

A cup wrench with notched tabs engages drain strainers through obstructed plumbing fixtures, resolving access constraints that hinder traditional pliers.

A multi-functional tool structure uses a rotating sleeve to access interchangeable screwdriver heads stored in the base.

Replacing annular collars with projections reduces material volume and enables stacking, while distinct end textures provide tactile feedback for orientation.

Three robust torque application points in the jaw profile transmit high proof torque while preventing slippage on worn fasteners.

A driving tool uses a control ferrule to pivot a non-circular spatial engaging member within a tool shank socket.

Two flex sensors spaced along the longitudinal axis compare bending moments to identify obstacle contact and emit error signals during confined space operation.

Asymmetric wrench drivers with embossed grips resolve restricted operating angles and injury risks from improper holding gestures.

Segmented torque multipliers connect via a universal sleeve to resolve the trade-off between high torque capacity and heavy device weight.

Pivotable jaw segments enable lateral engagement of tube-nuts in confined aircraft spaces, ensuring accurate torque measurement.

Contoured tapered engagement channels dig into compromised fastener surfaces to maintain reliable torque transfer and prevent tool slippage.

A drive tool rotates a separable nut portion while a vacuum generator captures the debris through a removal tube.

Arcuate recesses in the hexagonal body increase contact area to prevent wear on screw heads while maintaining torque transmission.

A motor control method detects impact angle and electric current to determine failure states in hydraulic pressure generators.

A camera system adjusts its focal length to match the distance of a fastener installation tool.

Elastically deformable spreader arms expand inside rotor blades to grip trim weights, bypassing rigid tool limitations in confined access spaces.

Nesting an RFID tag in a sealed handle cavity protects identification components from corrosive chemicals and mechanical impacts.

An energy-based regulator minimizes tightening time and heat by converting motor inertia into a smooth braking process.

A torque-limiting wrench uses a pivotable handle shank to transmit rotational force, resolving user discomfort from rigid over-tightening mechanisms.

Triangulated equidistant torque points self center on worn fasteners, resolving slippage and corner damage while transmitting high proof torque.

An oblique contact member transforms axial bushing motion into precise radial clamping, eliminating elasticity-dependent tolerance variations.

A DC electric tool control system detects battery voltage to adjust PWM duty cycles for consistent torque output.

A sliding cover hand tool uses a driving head engaged into perpendicular recesses to provide a stationary connection between the handle and socket.

A clinch tool uses guided movable die elements to form mushroom buttons.

A combination tool uses a ratchet system to pivot and lock components.

Removable contact trip assembly uses a biasing spring to move a sensor target for electronic depth control.

Integrating adjustment mechanism into handle structure enables single-handed operation, eliminating need for two hands during torque setting.

A ratchet wrench incorporates a detachable bicycle toolset within its main body cavity to create a compact, lightweight design.

A ratcheting wrench assembly uses a threaded fastener with an unthreaded counterbore to pivot the drive head.