Probably not what you envisioned. Buckle refers to the buckling of the limbs when compressed. Read on.
I wonder if any were sold. I think two things were against it. One, the compound was king at this time and two, it looked expensive to manufacture.
From Archery World, February/March 1978.

I agree with Steve. I wonder if there are any floating around? See he was in Europe. Oh, for the price of those XX75’s in that add I will take 5 dozen
Reminds me of the Oneida's and the spin-off of that called Discovery, I think...
Definately not for a winter hunting trip.
Looks to me like it was trying to be a compound with recurve appeal.
There was a patent.