With Cleaning Means, Drip Collecting, Waste Disposal Or Soil Preventing Guards Or Shields Patents (Class 239/104)
- With means for enlarging spray openings beyond normal operating position (Class 239/107)
- With separate drain or access opening (Class 239/110)
- With diverted system fluid or nonspraying fluid for cleaning (Class 239/112)
- Solid scraping or clearing member (Class 239/114)
- Return or reverse flow from outlet (Class 239/119)