Plastic frame for eyeglasses
AssigneeOptik Partner AG & Co.
InventorsKurt Frank, Rolf Malthaner
Life of this patent
Estimating the term…
Abstract
In a method for manufacturing plastic frames for eyeglasses a plastic blank is provided with formed portions in the area where protruding parts of the finished plastic frame are located. Preferably, these formed portions are injection molded onto the plastic blank. By providing these formed portions to the plastic blank, the number of commonly required cutting steps are reduced.
Claims11
A plastic frame for eyeglasses, comprising a center portion, temples and hinges for connecting said temples to said center portion, said plastic frame having protruding parts in the form of nose cushions at said center portion and hinge supports for said hinges at said center portion and said temples, said plastic frame manufactured by a process comprising the steps of:
- cutting said center portion and/or said temples from a plastic bank;
- before said step of cutting, applying at least one elevated formed portion of plastic material to the blank such that said formed portion exhibits an intimate connection to the blank, said step of applying comprising the step of positioning said at least one formed portion so as to coincide with said protruding parts of said plastic frame and essentially omogenously injection-molding said plastic material onto the blank;
- and
- finishing the blank together with said at least one formed portion to form said center portion and/or said temples.
Dependencies are inferred from the claim text.