Ball coupling
US4008906A · kind A · utility
6Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1975 |
| Grant date | Feb 22, 1977 |
| Priority date | — |
| Expiry date | Dec 19, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C11/0619
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A ball coupling includes a tractor drawbar mounted hitch ball, substantially englobed by a cap assembly which is slidable on the hitch ball. The cap assembly includes a cap having a frusto-conical surface which non-rotatably engages a frusto-conical through opening in an implement drawbar attached adapter. A lockable fastener abuts the adapter and protrudes into the smaller base of the adapter opening and threads into a threaded hole in the smaller base of the cap to draw the cap assembly into the adapter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.