Spanners TRIZ Cases

A segmented extractor tool uses integrated splines to grip damaged fastener heads securely.

A multi-nut driver uses nested reversible barrels to present various socket sizes within a single compact handle.

A retractable tool engages temporary fasteners automatically without rotation using spring-loaded locking thrusters.

A manual rotary tool uses a spiral ratchet mechanism to convert handle squeezing into continuous shaft rotation.

A nut runner bit changer uses an actuator with engaging shafts to attach and remove bits at a single station.

A magnetic sleeve uses a resilient engaging member to attach securely to screwdriver bits.

A split cam fastener device engages screw heads via elastic biasing to enable secure drive tool attachment.

Austenitic stainless steel socket prevents magnetic scattering while a spring-biased pusher secures bits against gravity.

A mobile screw feeding platform automates fastener insertion via a magnetic grip and drill assembly, resolving manual labor bottlenecks.

Segmented pawl faces enable bidirectional operation, resolving the trade-off between unidirectional reliability and versatile rotational capability.

A torque socket adjusts preset values by altering contact area between friction surfaces.

Removing feeder hoses eliminates screw sticking and reduces apparatus size while pneumatic suction ensures reliable screw transfer.

A wrench movable jaw guided by an angular track engages hex fasteners across multiple flats for secure torque transfer.

A link attachment system transfers intermittent turning force to fasteners using a spring-loaded drive plate and ratcheting mechanism.

Integrates interchangeable wrench, hammer, and screwdriver functions into a single core tool using separable upper and lower portions.

Segmented engagement features on the torque tool bite into worn fastener heads, maintaining torque transfer reliability without slippage.

A torque wrench tripping assembly uses an elastic abutting member and mandrel notches to generate tactile vibration feedback.

A pneumatic tool integrates a dynamic piston assembly to regulate air flow and torque output without adding electronic components.

A telescopic storage base slides along a positioning rod to organize tools within a handheld container body.

A handover procedure exchanges traffic pattern parameters between base stations to configure periodic radio resources for wireless devices.

Segmented markings with variable lines differentiate adjacent socket sizes, reducing selection time and preventing errors.

A foldable ratchet wrench uses a positioning mechanism with restricting portions and a movable member to lock the driving head in place during operation.

A controller regulates strike force via PWM to maintain torque accuracy across varying battery voltages.

The driver adapter reduces operator fatigue by extending the torque application in a different dimensional direction, creating mechanical advantage while distributing stress.

A hydraulic impact device generates torque pulses via an output shaft driven by a piston assembly within a cylinder.

A reversible ratchet wrench uses a pivotally attached handle and linkage to switch operating direction while keeping the pawl engaged.

A power tool motor control method measures consumption to determine a third power limit and reduces output when below that threshold.

A hand tool features a pivotally mounted head secured by primary and secondary locking mechanisms actuated via a handle sleeve.

A torque-wrench attachment uses a translating element to vary the moment arm length based on the angle between the handle and wrench head axes.

Moves the directional control knob from the head to the handgrip, reducing the head profile for narrow spaces.

Nested rod sections adjust the handle length to reach high crank couplers, reducing manual effort required to operate awnings or blinds.

A pre-stressed L-rod and spring assembly in an electric screwdriver switch ensures accurate micro-touch detection.

A screw fastening method detects thread ridge collisions during reverse rotation using a sensor to identify the starting position for secure joining.

Segmented inertial members allow torque adjustment for different threaded components, preventing over-tightening damage.

A drywall screwdriver uses temporally spaced motor pulses to rotate the tool by a predetermined angle, enabling precise manual control.

A dual-ended Seatdriver apparatus integrates a driver shaft and seat head to handle check and relief valve seats in one tool.

An adapter mounts an L-shaped Allen wrench key into a rotary tool chuck to align the long leg with the rotation axis.

A cylindrical fastener drive tool uses a flexible steel wire core and rubber covering to accommodate multiple driver bit types securely.

A palm spanner features a pivotally mounted driving head that retracts into a hollowed handle groove for compact storage.

Limiting initial rotational speed allows pulse detection to prevent overtightening and ensure joint reliability.

Segmentation and extraction principles reduce manufacturing complexity while maintaining reliable bit retention through a clocking cylinder mechanism.

A movable jaw with a 120-degree angle moves along a guide to maintain parallel contact with a fixed jaw.

Elastic binding ring clamps workpieces in ratchet wrench tool troughs, preventing operational escape and eliminating the need for multiple specialized tools.

Nested multi-function tool merges wrench and screwdriver capabilities into the pull-handle to eliminate separate tool handling during chain adjustments.

Self-adjusting jaws maintain contact without manual intervention, eliminating the need for a second operator or hammering backup wrenches.

Segmented motor speed profiles resolve the contradiction between process productivity and tightening torque precision by compensating for inertia.

A magnet coupling transmits torque between shafts using magnetic fields to replace mechanical contact.

Segmented jaws adapt to confined aircraft spaces, resolving torque measurement accuracy versus engagement difficulty.

A rotating sleeve with a gradually-opened locking strip adapts to internal and external hexagonal fasteners.

Segmented fastening extracts the screw bolt from hidden retaining rings, resolving dismantling difficulty while maintaining fixing stability.