| 摘要 |
<p>Shaft is driven from a tractor's stub shaft as in parent patent. The pivot adjustment bearing has 2 outer semicircular annular shells fast to the housing, and the 2 inner ones are pivotably adjustable within these, on a common spherical surface. The inner shells engage on either sides of, and centre, the roller bearing fitted to the second joint shaft. The annular shells are resiliently tightened onto the common surface.</p> |
