摘要 |
A shaft drive arrangement including a drive member (402), a driven shaft (100); a disengageable drive mechanism, (202, 204, 302), adapted to connect the shaft and drive member, the mechanism including one or more engagement recesses (304) and one or more engagement members (202, 204), each engagement member being adapted to cooperate with an engagement recess; and a disengagement member (312) adapted to disengage the or each engagement member from the engagement recess with which it is engaged. |