Patent ID: 6170358
Filing Date: 2001-01-09
Classification: B23Q,G01B,Y10T

Abstract:
An indexing mechanism having a first body and a second body which are relatively rotatable substantially about an axis, for relatively locating the first body and the second body in one of a plurality of discrete angularly indexed positions about the axis, comprising:an intermediate body rotatable relative to the first body and the second body substantially about the axis;a first set of mutually engageable detent elements provided on the first body and the intermediate body, elements of the first set of mutually engageable detent elements being mutually engageable in a plurality of first discrete angularly indexed positions about the axis, the first angularly indexed positions having a first angular separation; anda second set of mutually engageable detent elements provided on the intermediate body and the second body, elements of the second set of mutually engageable detent elements being mutually engageable in a plurality of second angularly indexed positions about the axis, the second angularly indexed positions having a second angular separation, different to the first angular separation.