| 摘要 |
The pump includes a motor shaft (5) driving a pump shaft (2), in which is formed an internal passage (3) for supplying lubricating fluid, the passage having a closure device (10) which is adapted to be held closed by centrifugal force acting on a bell-crank (9) while the shafts are rotating, so as to form a pre-loaded pressure-relief valve. <IMAGE> |
