I wore one of these beauties in pee wees, as a goalie. Not sure about CSA approval, if that was even a thing in 1979, but they offered as much or more protection as their CCM contemporaries.
And I would stand to be corrected but I don’t recall seeing this in the NHL on anyone, which may have been because they were butt ugly moreso than that they weren’t safe. The Gretzky style Jofa helmets were the most unsafe thing and several players wore them.
There was a change in minor hockey where CCM and Cooper upgraded their helmets, more robust and thicker plastic and padding. I remember that helmet being worn before that as a peewee. When I hit the last year of peewee we had cages and the new standard helmets.
If anyone cares, google Patterson hockey helmets, I wore a light blue one before the cage came in. No idea where it came from. That's a goofy looking lid, and me with my big 70's glasses and hair as a shaggy 10 yr old.