English to Italian Tech/Engineering Engineering (general)

Petals can be attachable to a rotary fixture (or "hub") in a variety of ways.
One method, shown in FIGS.
3-5, utilizes a face seal constrained by locating pins and held fixed by a bolt.
In other embodiments, machined locating features can be incorporated into the parts, and instead of a bolt, an over center clamp can be used to constrain the part.

Ref: https://patentimages.storage.googleapis.com/16/d7/4f/3ce04ea...