Patent ID: 9649671
Date: 2017-05-16
CPC Classifications: B08B,E03F

Claim:
1. A cleaning device for the internal cleaning of drainpipes, including one or more chains including several links, and on one or more sides of one or more links is fastened to one or more hard metal blades, each one of the one or more blades includes an upper surface, a lower surface, a side surface and an end surface, and each one of the one or more blades is soldered or welded fast to the link of its lower surface, and an inner angle of the upper surface and the side surface is 60 to 89 degrees, wherein, a fastening section comprises a circular hollow sleeve to which one or more chains are welded fast to the link at the end of the chain, and the fastening section includes one or more fasteners, at least one of the one or more fasteners being a friction screw.