Spanners TRIZ Cases

Audible clicks from a spring-loaded steel ball and groove assembly let users set torque accurately when the scale is hard to see.

Transmission steel balls replace planar contact in a torque wrench, cutting adjustment friction and making torque setting easier.

A dual shaft-locking clutch stops fastener rotation on the return stroke, enabling automated tightening or loosening without manual grip swinging.

A parallel control member and horizontal locking load reduce block fracture, pin deformation, and tooth wear while enabling precise angle adjustment.

Oblique-sliding clamping blocks let one socket grip different threaded sizes with stable force, reducing tool changes and slip.

A nested spring recess constrains alignment spring movement under side loads, keeping ratchet gear and pawl teeth parallel for durable torque transfer.

A reverse-driven release sleeve and nested ejector pin remove sheared bolt tips in tight space without interfering with tightening.

Offset engagement cavities and bracing sidewalls help a socket bit grip worn or corroded fasteners and transfer torque without extractors.

A dual shaft-locking clutch lets the output shaft return without back-driving the fastener, avoiding manual grip swinging and unintended loosening.

A brushless-motor pre-shear mode lets the wrench tighten tension control bolts without tip shearing, so workpieces can be aligned before final fixation.

Recessed portions, a central projection, and ribs cut handle weight while preserving torque, toughness, and grip security.

A helical sliding member lets one manual impact driver switch from axial striking to torque output, easing removal of overtightened fasteners.

A single drilling path cuts assembly complexity and tolerance buildup, while a retained magnetic block avoids breakage and detachment.

Interchangeable jaw inserts and a pivotable wedge let one faucet wrench fit varied parts and apply torque in confined spaces.

A flexible spring-linked torque stick limits impact tool output by deflecting and rebounding to keep fastening torque within range.

A harder working end and softer shank reduce bit wear, torsional stress, and impact damage for longer fastener-driving life.

A nested reversible socket and adapter assembly handles multiple bolt sizes while maintaining secure torque transfer and reducing socket changes.

Axial bit-position detection lets the controller stop screw driving when the forward end is not reached, avoiding endless operation from sensor faults or tilt.

Inclined tapering grooves guide socket drive insertion in tight spaces, speeding alignment while preserving grip and torque transfer.

A dual-bearing output shaft and cover-supported transmission layout reduces eccentricity and friction to keep electric tool torque stable.

A trigger-driven rack and pinion lets the movable jaw adjust fast and disengage easily, improving wrench use in confined spaces.

Sliding inner and outer legs use magnets to hold and release multiple fasteners at once, speeding assembly in hard-to-reach locations.

A base-and-Allen-key wrench grips and retains a hot flux core welding gun tip holder for safe removal without damage or hand contact.

Movable and fixed teeth align screws at board corners to hide fasteners in the crevice and avoid damage to adjacent boards.

A disc spacer stabilizes the ratchet gear and retaining clip under side bending and twisting loads, improving alignment and durability.

By sensing housing deformation near the output gear, this attachment measures torque accurately where compact gear-driven tools cannot fit transducers.

Individual socket holders strung on a flexible member keep sockets together, easier to carry, store, and test for fit without loss.

An integrated retractable-pin drive member secures or releases the wrench drive without separate retainers, easing reversal and preserving torque transfer.

Angle and drive energy sensing let an impact wrench estimate fastener torque more accurately by compensating for efficiency losses.

A tubular anvil guide part lets the main shaft extend deeper, reducing stress concentration, wear, and fatigue failure in compact impact tools.

Rotationally offset gear layers and series pawls cut ratchet backlash, spread tooth loads evenly, and improve torque transfer durability.

Elastic retention and a through-locking member let one socket fit multiple tool sizes with easier assembly and fewer parts.

A lever arm and locking rack replace slow worm-screw turns, enabling faster adjustable wrench jaw sizing with less effort.

A sleeved wire passageway routes multiple LED wires through tight tool housing space, improving shadowless lighting and wire protection.

An inner casing socket and bearing set isolate the torque sensor from rotation and vibration, improving torque accuracy and durability.

A ring gear and planet gear support layout helps an impact tool deliver consecutive rotational impacts while shortening the drive assembly.

A freewheel mechanism removes reverse resistance in torque screwdrivers, enabling comfortable re-gripping and accurate low-torque tightening.

A separate exhaust hole vents cylinder air without widening the guide hole, preserving driver guidance and piston speed in pneumatic driving tools.

A circumferential RFID tag and non-metallic spacer keep screwdriver identification readable in any orientation without adding bulk.

Mating circular depressions and a specialized wrench block unauthorized hydrant access while reducing slip risk and operation time.

A lever-and-base ratchet control seals the tool head cavity, resists deflection under high force, and keeps pawl engagement reliable.

Resilient cage fingers keep ratchet rollers upright and unstuck, enabling stable reversal and load bearing in spaces with under-5-degree swing.

Hammer advance angle per strike is compared with reference thresholds to flag anomalous fastening and improve fastening state accuracy.

A pivoted control knob separates direction switching from the snap plate, shortening the wrench head and reducing deformation and part count.

An impact sensor and motor controller count impact progression and stop the tool automatically for repeatable tightening torque.

Selective motor brake abort during driver blade retraction raises cycle rate while reducing current draw, wear, and battery drain.

A torque-sensing auto-shift mechanism switches transmission paths to match load, reducing manual gear changes and user fatigue.