Grid Couplings 

A grid coupling consists of two flanged hubs with slots or grooves in the flanges, connected by a serpentine mechanical flexible element.

Jaure® RECORD Grid Couplings
This coupling is made up by two discs that get wider towards the coupling’s centre. Also, they have carved slots for the spring or the flexible element. The spring is maintained and protected by a metallic crankcase full of special grease.
Kop-Flex® Kop-Grid® Grid Couplings
KOP-GRID® tapered grid couplings are your best choice to protect your investment in expensive driving and driven equipment from misalignment, shock loads and vibration, while accommodating reasonable shaft end float.