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| Number | Title | Issue Date |
| 5363924 | Weight transfer system for an agricultural machine A pair of grain drills are positional for side by side operation in the field and connected to a towing tractor by weight transfer hitch having a rear end portion connected to the grain drills and a forward tongue portion having its front end connectable ... | 11/15/1994 |
| 4807714 | Hitch assembly and method A hitch assembly and method for connecting a vehicle to a towed apparatus and releasing the towed apparatus from connection to the underlying supporting surface has a tongue which is connected to the towed apparatus and a socket engaging device mounted on... | 02/28/1989 |
| 4702489 | Apparatus for lifting an end of a hitch The present invention is directed to an apparatus for engaging and lifting the end of a hitch resting on the ground. The apparatus is particularly useful when attached to a yard tractor used for moving trailers or trailer dollys about a parking yard. The ... | 10/27/1987 |
| 4391334 | Hitch assembly A hitch assembly for interconnecting an agricultural tool with a towing vehicle to allow relative angular vertical articulation between the tool and vehicle during use and to lock rigidly with the tool for transport. The hitch includes two pivotably inter... | 07/05/1983 |
| 4217962 | Hydraulically operated grade scraper A soil ripping tooth assembly is pivotally mounted for vertical movement within a horizontally disposed downwardly and forwardly open box frame having a drawbar and drawn by a prime mover having a hydraulic fluid supply system. A scraping blade is connect... | 08/19/1980 |
