| 37 / | HD | EXCAVATING |
|
| 196 | DF | SNOW OR ICE REMOVING OR GROOMING BY PORTABLE DEVICE {16} |
| 244 |  | .~ Motorized rotary excavating tool {8} |
| 245 | DF | .~.~> Tool arresting means responsive to sensed condition |
| 246 | DF | .~.~> Electric motor drive |
| 247 | DF | .~.~> Rotor shaft adjustable relative to direction of travel |
| 248 | DF | .~.~> Diverse multistage rotary tools or tool portions (e.g., feeding and throwing, etc.) {1} |
| 253 | DF | .~.~> Fed by scraper blade {2} |
| 257 | DF | .~.~> Screw-type auger {1} |
| 259 | DF | .~.~> Centrifugal impeller |
| 260 | DF | .~.~> Having specific flow guide {2} |