When Engineers Realized

When engineers realized they could replace gear teeth with these movable metal blades, America's hydraulic systems almost felt like they jumped 50 years forward. Because at that time, many engineers were still limited by gear pumps. A gear pump can move fluid of course. Two gears mesh together on one side, the teeth separate, the space gets larger and oil is pulled in. On the other side, the teeth mesh again, the space gets smaller and the oil is squeezed out. It sounds very smart, but that was also its biggest weakness because the gear teeth are fixed, the oil is carried pocket pocket. That can make the flow feel pulssed, the noise more obvious and the output less smooth. Then engineers asked a new question, what if these teeth could move? That idea opened up a completely different solution. They cut slots where the teeth would be, then placed movable metal blades inside those slots. This is the vein pump. When the rotor starts spinning, these metal veins slide outward and stay against the inside wall of the pump housing. Between every two veins, a small sealed oil chamber is formed. On one side, the space slowly gets larger and oil is pulled in. On the other side, the space slowly gets smaller and the oil is pushed out. So a vein pump is not throwing oil outward like a fan. It is more like a circle of moving ceiling walls, pulling oil in and pushing it out smoothly and continuously. A gear pump moves oil pocket by pocket. A vein pump uses changing chambers to make the flow smoother. Which hydraulic system do you think is better?