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https://drivepatents.com/patents/941981 · 8 Jun 2016
A method for making a carbon fiber wheel rim includes: preparing an outer supporting piece (20); winding a carbon-fiber yarn (30) around the outer supporting piece (20) to form carbon fiber layers and to constitute an engaging seat preform (31); connecting...
https://drivepatents.com/patents/982849 · 23 Oct 2013
A manufacturing method of a bicycle wheel hub includes pre-weaving into a carbon fiber sleeve (10), stacking and telescoping carbon fiber sleeves, placing into left and right molds (30,31), placing reinforcing sheets (20), clamping upper and lower molds (3...