Unusual Danish Oak chair identification.  

Hi all, hoping  someone may recognise this design. It’s a very well made / solid frame and under that factory white finish is solid oak. The interesting  part (for those who like design) is that the front and top rear chrome bars are fixed via hex bolts on the sides and at the end of each bar is a sprocket / washer with teeth and a corresponding one attached to frame, the design not only holds the straps tight but as they stretch or foam softens you can loosen the bar, turn it which tightens straps then lock the bar in next position, very cool. 
Hope someone recognises the design, with the oak frame I’m guessing Danish / Scandinavian.