Spanners TRIZ Cases
- Wheel Nut Wrench Nested Sleeve Design
A hexagonal steel sleeve pressed into a carbon steel tube socket unifies the joint through plastic deformation.
- Screwdriver Torque Control via Motor Current Limit and Kinetic Braking
A screwdriver calculates a motor current limit to switch the drive to a standby state before initiating kinetic braking for precise tightening.
- Lighted Socket Wrench Illumination Circuit Design
A lighted socket wrench integrates a power supply and ratchet drive member to deliver current to an illuminated socket for fastener work.
- Socket With Switch Member And Positioning Unit
A socket moves a positioning member via a switch member to resolve wear and instability from retractable balls.
- Powered Ratchet Tool Pivotable Head Locking Mechanism
A powered ratchet tool uses a pivotable head locked by a collar mechanism to transmit torque, enabling operation in tight spaces without disassembly.
- Auto-Adjusting Tool Handle With Cam-Driven Expansion Members
Cam surfaces drive expansion members outward against springs, adapting the handle grip to applied torque levels.
- Socket With Inclined Protrusion Faces For Worn Object Engagement
Segmented protrusions with obtuse corner angles increase contact area at object corners, resolving wear caused by size mismatches during rotation.
- Screwdriver Outer Profile Head Segmentation for Torque and Wear
Segmented screwdriver head splits into large and small parts to absorb torque while reducing wear on the outer profile.