Erasing Devices TRIZ Cases
- Compact Multi-Function Writing Tool with Integrated Vacuum and Storage
See how merging a pencil sharpener, eraser, vacuum/blower, and storage into one handheld unit r
- Thermochromic Pen Friction Body for Paper-Safe Rewriting
A tuned friction body generates enough heat to erase or change thermochromic handwriting while avoiding paper damage and heavy rubbing.
- Rail-Mounted Multi-Eraser Assembly for Faster Whiteboard Cleaning
Multiple erasers mounted on a moving shaft speed whiteboard cleaning, reduce manual effort, and prevent lost hand-held erasers.
- Pen Tip Attachment Structure With Deformable Barb Locking
A deformable barb in the pen fitting hole cuts insertion force while locking the pen tip securely without scratches or tip detachment.
- Multi-Core Pen Ink Composition for Smear-Free Thermochromic Erasing
An oil-based pigment ink lets a multi-core pen combine thermochromic and standard writing without smearing during friction erasure.
- Retractable Pen and Eraser Helical Cam Assembly for Easy Refilling
Dual helical cams move both pen tip and eraser while keeping the mechanism compact and making refills and replacement easier.