The Arlington design is from me....
I gave it to Rex Moore some two years ago....
It was MY idea to use turnbuckles to solve a soft lid HEAVY pendant lighting situation in Grass Valley, California.
Weird, that Arlington quotes my Rex Moore buddy inre the time saved.
They don't deserve any patent since such an install is already 26 months old.
As for myself, impossible for me to receive $$$ for my idea. I'm not a manufacturing engineer.
BTW, my current employeer wanted to know why I wanted turnbuckles for just such an application -- recently -- and the very next day EC Mag shows the Arlington Ad.
"Timing is all." Shakespeare