| 摘要 |
A reversing gear, primarily for boat engines, comprising a pair of coaxial, counter-rotating drive elements, and a driven element accommodated in the space between said drive elements and mounted for axial displacement so as to be engaged with either of, and disengaged from, said drive elements. The driven element is carried by a plunger the end portions of which are received in cylinder chambers provided in said drive elements and communicating, via ducts in the drive shaft, with pressure fluid supply and drainage ports controlled by an axially displaceable slide valve so that a servo effect is obtained when the slide valve is displaced relative to the shaft which is thereby itself caused to move axially, together with the driven element, relative to the slide valve and the drive elements, respectively.
|
