Bolts TRIZ Cases
- Drive Tool Quasi-Cylindrical Geometry Reduces Wobble
Quasi-cylindrical drive tool geometry generates a stick-fit effect through controlled friction for secure axial guidance.
- Recessed Head Screw Driving Socket Geometry for Secure Tool Engagement
A recessed head screw features a driving socket with a specific diameter ratio to ensure close-fitting engagement with the driving tool.
- Hexalobular Screw Head Conical Press Connection for Torque Stability
A conical press connection system with a tapered recess and sloping transition surface creates a stable stick fit between the tool engagement section and screw head.
- Screw Tightening Structure with Negative Driving Angle
A screw tightening structure uses a negative driving angle to transmit torque through tangential force application.
- Combination Bit for Phillips and Robertson Fasteners
A combination driving bit accommodates both Phillips and Robertson head fasteners through a specialized working portion.
- Wind Turbine Tower Direct Fastener Friction Bonding
Direct fastener joins tower components via friction hold and bonding without through-going holes.