Patent ID: 9669516
Date: 2017-06-06
CPC Classifications: B24B,B24C

Claim:
1. An apparatus for surface treatment of objects, the apparatus comprising: a transfer part including a channel having first and second opposite end portions, the transfer part channel bent at a plurality of points between the first and second end portions; an injection part at the first end portion of the transfer part channel, the injection part configured to inject an object into the transfer part channel; an emission part at the second end portion of the transfer part channel, the emission part configured to emit the object from the transfer part channel; a pressure supply part connected to the transfer part channel, the pressure supply part configured to supply pressure into the transfer part channel to move the object toward the emission part; and a collision part extending along at least a portion of the transfer part and defining a continuous collision surface such that a plurality of the bent points of the transfer part channel are exposed to the collision surface of the collision part such that the object moving in the transfer part channel collides with the collision surface of the collision part a plurality of times to treat a surface of the object, wherein the transfer part channel is exposed to the collision part at alternating ones of the plurality of bent points of the transfer part channel, wherein the transfer part channel has a diameter at bent points of the transfer part channel that are exposed to the collision part that is larger than a diameter at bent points of the transfer part channel that are not exposed to the collision part.