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| Number | Title | Issue Date |
| 5353881 | Counter-rotating twin shaft system for gardening machines A gardening utility machine having a counter-rotation twin shaft system can perform multiple types of work required for gardening (tilling, soil removal, weeding, raking and shredding of leaves), snow/ice removal and for power de-thatching and mowing of l... | 10/11/1994 |
| 5224552 | Counter-rotating twin shaft system for gardening machines A gardening utility machine having a counter-rotation twin shaft system can perform multiple types of work required for gardening (tilting, soil removal, weeding, racking and shredding of leaves), snow/ice removal and for power de-thatching and mowing of ... | 07/06/1993 |
| 5101911 | Rotor tiller having counter-rotating twin shafts A rotor tiller having a counter-rotating twin shaft system and counter-rotating digging means such as tines, paddles, or blades for efficient tilling of soil. In another embodiment, the tines on the twin shafts can be replaced by counter-rotating helical ... | 04/07/1992 |
| 4267891 | Soil cultivating machines A cultivating machine has groups of soil working tines that are mounted on an elongated support that is driven to rotate about a horizontal axis. The tines are mounted in spaced apart groups and guide members converge at the rear of the groups to form rid... | 05/19/1981 |
| 4145825 | Plow wings A plow wing for mounting on each side of a snow plow blade and adjustable by the snow plow operator to permit the snow pushed by a plow to move in a direction determined by the operator. When not in use, the wings are retracted rearward so that they will ... | 03/27/1979 |
