| 2867452 | Universal hitch assembly | January, 1959 | Richlick | 280/492 |
| 2890065 | Trailer hitch with plural articulation axes | June, 1959 | Shaffer | 280/492 |
| 3730557 | UNIVERSAL JOINT TRAILER HITCH WITH COUPLING PIN SOCKET ALIGNING AND BEARING MEANS | May, 1973 | Cox | 280/504 |
| 4200306 | Universally swiveling tractor hitch | April, 1980 | Helms | 280/494 |
FIG. 1 is a left side elevation view of a three axes hitch embodying our new design;
FIG. 2 is a right side elevation view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevation view thereof; and
FIG. 6 is a rear elevation view thereof.