I’m trying to get an understanding of this. The knuckle pivots to open/ close on the pin, but onced closed there is no force exerted on the pin? Does the shank design allow the knuckle once closed to pull on the designed casting of the "interlocked/ closed coupler? What opening forces stop any pressure on the pin itself- now confused, to say the least…
Does the shank design allow the knuckle once closed to pull on the designed casting of the "interlocked/ closed coupler?
Yes.