| 摘要 |
Hydraulic motor with propulsion members (10) positioned between a cam (3) associated with a shaft (2) and a reaction element (1b), said propulsion members (10) consisting of two elements (11,12), i.e. an internal element (12) and external element (11), telescopically slidable with respect to each other in a radial direction and respectively provided with annular bearing edges (11a,12a) kept pressed against corresponding contact surfaces (3a,1a) of said cam (3) and said reaction element (1b) via respective resilient means (16), the resilient means associated with the external element (11) of the propulsion member being arranged outside the said element, characterized in that the resilient means (16) associated with the internal element (12) are arranged inside the propulsion member (10) and positioned in the radial direction between said internal element (12) and associated means (52,55) for mechanically retaining them.
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