Spectacles with fastening device

Details Spectacles with fastening device Spectacles with fastening device

1984-11-20

1987-08-11

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Rimless mounting

351140, G02C 102

Patent

active

046857818

ABSTRACT:
This invention relates to spectacles in which are spectacle lens is connected to an individual component, for example a flange, by means of a fatening device. In the spectacle lens the two ends of a borehole are expanded into two borehole widenings which are engaged with a first protrusion on the flange and with a connecting element that is connected to a pin leading to the first protrusion. In addition, the flange has two further protrusions supporting themselves on the border of the spectacle lens, so that a four-point anchoring of the flange secured by the pin against pulling and by the additional protrusions against rotating is furnished on the spectacle lens and vice versa. A certain flange is suitable for given thicknesses and curvatures of the spectacle lens, because both on the front side and the back side of the spectacle lens it is not the front or back sides that define the gripping surfaces for the connecting element and first protrusion, but the borehole widening.

REFERENCES:
patent: 2173670 (1939-09-01), Splaine
patent: 2328423 (1943-08-01), Cook et al.
patent: 2328708 (1943-09-01), Cook et al.

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