Ah, yet another variation on the two solid parts with an elastomer in between theme....
And in my profession, when one says Lovejoy coupling, we are thinking this:
![[Linked Image]](https://www.tm-img.com/images/2019/10/24/Lovejoy-coupling.jpg)
Lovejoy in fact makes many types of vibration resistant, torsional stress reducing and misalignment mitigating couplings.