Screwdrivers TRIZ Cases

A textured rotary bit deburrs EMT pipe ends and drives fasteners in one tool, cutting bit changes and protecting the screwdriver tip.

A multi-size valve core tool combines square and hex openings with a tapered extractor to remove corroded cores faster with fewer tool changes.

A translating, spring-biased driver keeps fastener engagement during partial turns and removes the need for a toggle switch.

Recessed anti-slip grooves improve tool-fastener grip, limiting slippage and wear even when fasteners are damaged or corrosive.

Varying handle radii create distinct grip zones that support quick rotation, low torque, and high torque with less hand fatigue.

A locking telescopic shaft, stabilizing handle, and integrated bit storage address wobble, bit loss, and accidental ratchet disengagement.

Axial ribs and opposing driving surfaces strengthen fastener engagement, helping a cruciform driver transmit large torque loads without cam-out.

This case combines a lockable extendable shaft, cam-driven ratchet, and stabilized handle storage for controlled reach and bit access.

A movable storage assembly uses detachable, interchangeable seats to hold different sockets and tool heads in one screwdriver.

Microalloyed steel screwdriver bits achieve HRC62 hardness through controlled spheroidizing and salt bath heat treatment.

Segmented engagement zones distribute extraction forces across hole walls and bottoms, guiding drill bits accurately while removing stripped fasteners.

A combination tool integrates a handle receptacle and damping mechanism to securely store detachable components within the grip.

A modular multiple tool uses magnetic connections to attach radial tool bodies and implements to a central frame.

Segmented driver bit portions engage damaged fastener heads to transfer torque, eliminating the need for bolt extractors or drilling.

Segmented connection device uses metric and English hexagonal recesses to prevent slippage during operation.

A damaged-screw extractor bit extends scraping edges into its threaded cone; idle rotation and high resistance give way to smoother engagement.

Segmenting the screwdriver shank resolves the conflict between continuous impact transmission and transverse hanging holes.

Contoured directional engagement channels on hex lobular bit fins prevent slippage on compromised fasteners by engaging the widest points of the lobe structure.

A multi-implement tool uses a pivot-inducing deflector to align shanks with the chuck during extension.

A hand-held tool features a torque-transmitting connection contour on the tool part for an inner handle piece, with casting channels filled during outer handle molding.

Compression springs clamp pivoted tools to prevent accidental rotation without external cases.