Patent ID: 6889412

Claim:
A method of producing central bridge of a spectacle frame without welding, comprising: Step 1: Wire-cutting out from a thin metal work piece to form a first shape having A first beam having extending arms with protruding members on both ends, A second beam having tow nosepad arms on both ends that symmetrically point toward the same direction away from said first bean, An overlapping ridge joined by said mid-sections of said first and second beams; Step 2: Wrapping up said protruding members by in protective material so that the protruding members will not be subjected to grinding force in later smoothing stage; Step 3: Smoothing out said first shape by subjecting said first shape to a sanding means; Step 4: Remove the thin protective material and start bending said first shape by subjecting said first shape to a moulding means, so that a second shape is formed after exiting out the moulding means and is in a state ready to be fitted to lenses, serving as the central bridge connecting the two lenses on a spectacle frame.