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At my work, we have a ratchet ring that we call a clicker disk. In my search on the internet I have not been able to find the name of this mechanism that has the teeth on the sides of the circumference, unlike conventional ratchets that have them around the circumference. I am interested in designing a system that uses 2 of these ratchet rings and rotates against each other on the same axis. enter image description here

enter image description here

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  • $\begingroup$ what does the patent documentation call it? $\endgroup$
    – jsotola
    Commented Nov 29 at 7:28
  • $\begingroup$ What you've shown appears to be a modified Hirth coupling or Hirth joint. I searched for ratcheting Hirth joint and came up mostly empty. There's a Reddit post from a year ago in which the OP also had zero results. I'm quite surprised at this zero result, especially since 3D printing makes Hirth joint creation that much easier for hobbyists. $\endgroup$
    – fred_dot_u
    Commented Nov 29 at 11:32
  • $\begingroup$ the mechanism is similar to the one used in hammer drills $\endgroup$
    – jsotola
    Commented Nov 29 at 16:10

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'Ratchet' is the correct name. Typically, one will be labeled the 'driver ratchet' and the other the 'driven ratchet'. 'Ratchet disc' might also be a proper name.

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