Importance

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Abstract

An apparatus for positioning each of a plurality of electronic component holder heads each for holding an electronic component, at a selected one of a plurality of positions of at least one stop station, including a plurality of rotary members each of which is rotatable about a common axis line and is stoppable at the at least one stop station, the electronic component holder heads being carried by the rotary members, respectively, such that each of the holder heads is movable relative to a corresponding one of the rotary members in a direction parallel to the common axis line, and (a) a circumferential position selecting device which selects, for the stop station, one of a plurality of circumferential positions which are spaced from each other in a direction of rotation of the rotary members about the common axis line, so that at least one of the rotary members is stopped at the selected circumferential position and accordingly the electronic component holder head carried by the one rotary member is positioned at the selected one position, and/or (b) an axial position selecting device which selects, for the stop station, one of a plurality of axial positions which are spaced from each other in the direction parallel to the common axis line, so that at least one of the head holders is positioned at the selected axial position as the selected one position.

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First Claim