摘要 |
A torque limiting coupling has recesses (5) parallel to the axis of rotation on the inner surface (1C) of an outer member (1), and an equal number of keys (20) slidable radially in seats (18) in an inner member (3) and elastically biased towards recesses (5). In order to ensure engagement of the keys (20) in the recesses (5) in a single relative angular position of the inner and outer members (1, 3), each recess contains at least one peg (41) flush with the inner surface (1C) of the outer member (1), and each key (20) contains a through notch (43), the axial position of each peg (41) and notch (43) of the corresponding recess (5) and key (20) are unique.
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