Patented Pin Bone Technology by Exos
"The key is to not bend the bone"
All excisting pin bone machines on the market - both handheld and automatic - work with the same old technology invented by Kari Koljonen almost twenty years ago. The handheld machines proved to work fine, and it was an easy way to use the same technology on the automatic machines.
But there is a big difference in processing fish using handheld machines versus fully automatic equipment. The human hand is a very sensitive "tool" by which you can adjust speed, pressure and angle towards the fish, in a way an automatic machine never can mimic. When using a handmachine, you are feeling the fish with your hand, and it´s easy to spot remaining bones. If needed, you can always go back if you missed a bone or two.
For an automatic machine the basic conditions are different; the picking heads has only one chance to grab the bone and pull it out. And the speed is much higher, while at the same time the waste must be kept to a minimum. Keeping these facts in mind, it´s easy to understand the drum technology is not working well in an automatic pin bone remover.
This is the reason Exos chosed to develop our own flap technology for the automatic Salmon and Trout pin bone remover. As you can see on the photo and video on this side, the flaps on the picking 
head pulls the bones straight out without bending them. The unique geometry in the head allows for a higher clamping force on the bones, which in turn gives a higher pulling force, without breaking the bones. That is why the Exos A302 can offer the processors higher speed, yield and efficiency.
Close-up photo showing a bone being pulled out without bending
