US Patent 11035510 Electrical conduit fitting and assembly

A push-to-connect electrical conduit fitting and assembly facilitates the connection of multiple types of metallic conduit. In various embodiments, an axially internal portion of the fitting has an interior surface that tapers from a narrower radius to a wider radius as it extends axially outwardly from a tube stop element. A packing arrangement including a fastening ring and release pusher are maintained within axially intermediate and/or outer portions of the fitting to facilitate retention of inserted conduits.