Removable Closure Guided In Rotary Movement (e.g., Screw) Patents (Class 220/288)
- Elliptical closure flange or passage mouth (Class 220/294)
- With biased gasket or packing (Class 220/295)
- Interrupted threads (Class 220/296)
- Keyhole slot (Class 220/297)
- Radially inwardly and outwardly extending interlocking lugs (Class 220/298)
- Locking lug engages "L" or cresent-shaped keeper slots (Class 220/300)
- Lugs engage cammed keeper (Class 220/301)