| 摘要 |
A power steering device includes an input member, a sleeve and an output member such that rotation of the input member relative to the output member communicates pressurized fluid through the sleeve to provide a power assist during steering. At least one pin is disposed between the input member and the sleeve to define fluid paths through the device and limited rotation between the input member and the sleeve increases the fluid flow in one of the fluid paths and decreases the fluid flow in the other of the fluid paths. A groove in the sleeve and a slot in the input member receive the one pin. The one pin is normally maintained in spaced relation to the input member by means of an axial cutout in the slot. In order to control pressure buildup due to fluid flow between the pin and the input member slot, the pin or the input member are provided with axial recesses at the location where the pin is engageable with the input member slot when the input member is rotated relative to the sleeve.
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