Spanners TRIZ Cases

Operating-time tracking triggers maintenance alerts for electric hand tools, reducing unexpected downtime and extending tool service life.

Multiple pawls engage ratchet teeth in different states to cut backlash, shaking, and reverse resistance without enlarging the tool head.

Curved drive and receiving portions transmit torque with a smaller socket outer diameter while preventing screw corner wear and serration.

Adds wireless transfer and local display of torque and angle data to electronic torque wrenches without increasing wrench complexity.

Magnetized chambers hold nuts and washers securely, helping gloved utility line workers avoid drops and speed fastener installation at height.

A sensor-triggered motor cutoff stops the drive bit at full screw depth, preventing overdriving while reducing energy use and battery drain.

A nested cam ring lets an impact tool use a stiffer spring to deliver high torque with less hammer axial travel and fewer added parts.

A selection ring and dual pawls switch torque direction automatically in a powered ratchet, preventing unintended fastener loosening or tightening.

A handle cavity and retaining end cap store bits internally, while a stepped shaft fits different socket sizes for faster access and added versatility.

A dual ratchet transmission keeps shaft rotation in one selected direction during back-and-forth handle motion, delivering higher torque without reset.

A closed-cell foam insert absorbs oil thermal expansion in a hydraulic pulse unit, keeping air out of the oil chamber and preserving efficiency.

Stored torque tester data lets an electric tool correct force-multiplier errors and avoid over-tightening or under-tightening.

A tooth-locked, spring-biased spacer lets one fastener setting tool fit varied board widths while staying simple and debris-resistant.

Direct comparison of tool and tester torque values enables fast on-site unlocking while preventing use of miscalibrated torque tools.

An eccentric pin and cam members vary crank radius with torque, adjusting ratchet stroke length for more efficient powered fastening.

A flat spacer separates locking posts from the pitted drive wheel, preventing tilt, reducing abrasion, and improving accessory mounting accuracy.

Integrated splines bite into damaged fastener heads to prevent slip, protect internal threads, and release residual material after extraction.

A cup-shaped fastener secures tool-holder bearings in the gear housing, improving stability, durability, and compact assembly.

A grooved holder guides and coils the loadcell wire inside a digital torque wrench to prevent tangling and keep torque readings stable.

A detachable screw holder with grooves, latching, and magnets guides long screws at set angles and distances to prevent slip in wood construction.

A through-hole driving member and opposite-side retainer prevent tool detachment, enabling stable single-handed fastener removal.

A clamping frame with lifting eyes and hex-head operation streamlines stabbing valve installation and handling on drilling rigs.

Time-linked physical measurements are converted into expected failure timing, helping users plan electric tool maintenance before breakdowns.

A non-rotating connector with a hex positioning hole enables direct power-driven impact removal of tightly stuck threaded elements.

Magnets and offset arc-shaped fingers let nested locknut wrenches cover multiple sizes and reach locknuts inside confined electrical boxes.

A variable-rate spring biasing mechanism keeps power tool clutch torque consistent across the range, reducing over-torquing and unintended disengagement.

A controller raises rotary-to-impact transition torque with power limits and timing control to protect fasteners and workpieces.

A harmonic wire and sliding pin retain and center nuts mechanically, replacing vacuum pickup to cut maintenance, energy use, and miscoupling.

A cam lever, friction block, and channel-lock let a pipe wrench handle lock at any length while preventing overextension or removal.

A nested two-piece socket adds angular play to direct-driven tightening tools, boosting torque pulse energy while reducing reaction torque and vibration.

An aligned slot and gear-driven runner lets power tools move nuts quickly on threaded rods, easing fatigue in tight or dirty spaces.

Annular protrusions and layered insulation block moisture seepage at grip joints, preventing electrical leakage in coated hand tools.

An articulating chain links the handle and drive shaft so the wrench bends into tight openings while still transmitting high torque to threaded fasteners.

A spring-biased magnetic sleeve helps hold and align fasteners on a tool bit, reducing drops and misdriving at non-perpendicular angles.