quantum,
The Volvo wheel loader quicker coupler is the European "standard" coupler. Not that it matters in the states or Canada, but this coupler interface is the same across all manufacturers in Europe just like skid steer couplers are in NA.
This coupler interface had many advantages over others in the marketplace in terms of visibility and performance. This is because the design keeps the top hook points in line with the loader arms and spreads the vertical distance between the top hook and bottom pin as far apart as possible. This keeps the bucket (or forks etc) as close as possible to the boom-to-bucket joint, thus keeping breakout forces and tipping load specs as high as possible.
Just about every manufacturer will make a coupler with this interface. Even JRB, although this isn't their standard interface, will make a coupler to pick up your Volvo attachments.
John Deere make a factory coupler for their loaders called the Hi-Vis that has the interface to pick up euro- style attachments like the Volvo's. It named mostly after its ability to give the operator improved visibility to the forks (or what ever attachment may be on a loader).
