| 摘要 |
PCT No. PCT/EP94/00452 Sec. 371 Date Dec. 5, 1994 Sec. 102(e) Date Dec. 5, 1994 PCT Filed Feb. 17, 1994 PCT Pub. No. WO94/19132 PCT Pub. Date Sep. 1, 1994A tool assembly comprising two components, adapted to be coaxially coupled together, is disclosed. The components share a common longitudinal axis so that a motion drive transmitted to the first of the two is transmitted to the second. The components are formed with interfitting male and female coupling members, each coupling member being formed with at least two terminal lobe portions and central, symmetrically disposed portion inset with respect to its associated lobe portions. The central and lobe portions of the male coupling member mate with the central and lobe portions of the female coupling member, forming a mating pair of lobe portions. The coupling members are formed, adjacent each mating pair of lobe portions, with respective surfaces, at least one of which is curved. Upon relative rotational displacement of the components about the common axis, at least one pair of surfaces abuts in such a manner that an angle defined between a tangent to the curved surface at the point of contact and a radius extending from the common axis to the point of contact lies substantially between -10 DEG and +25 DEG . |
