1. The Inshore Lifeboat will continue to operate from Dunbar and crew gear, assembly, training etc will remain there.

2. High precision special crown gear teeth.

3. The static and dynamic characteristics of the conjugate crown gear coupling train are analyzed.

4. The multitooth contact problem of the crown gear coupling is analysed by using 3 D BEM. Actual measurements on a specially designed test bed are made.

5. An empty space inside the crown gear communicates with the outside through an access slot.

6. The clamping action is released by rotating the crown gear in the opposite direction.

7. The workpiece W can be rotated around any desired angle by continuing to rotate the crown gear along with the tension rollers.

8. It is very useful to analysis the affection of crown gear coupling and correspond axis by addition moment of bending in engineering.

9. Based on the conjugate surface theory and meshing principle,[http:///crown gear.html] this dissertation establishes the transmission theory and analysis strategy of the crown gear coupling.

10. A housing with a recess for the introduction of a workpiece accommodates a clamping mechanism with a crown gear that is positioned and driven at its circumference.