Folding Patents (Class 493/162)
- Forming hollow wall or 270 degree folded edge (Class 493/168)
- Plural interrelated plungers (e.g., making separate cover and container) (Class 493/169)
- Flowable plunger or reaction member (Class 493/170)
- Expandable or contractable plunger or reaction member (Class 493/171)
- Orbitally moving plunger or reaction member (Class 493/172)
- And reciprocatory reaction member (Class 493/174)