Patent ID: 6254234
Filing Date: 2001-07-03
Classification: G02C

Abstract:
A front frame for a pair of spectacles, comprising:a V-shaped groove that engages with an engagingly locking convex stripe, having a V-shaped cross section, around a circumferential edge of a lens, wherein first and second inclination bottom surfaces of the engagingly locking convex stripe form a tip part that contacts first and second inclined bottom surfaces defining the V-shaped groove, at a location near a lowest bottom portion of the V-shaped groove, anda first frictional biting-into protrusion stripe on the first inclined bottom surface of the V-shaped groove,wherein the first frictional biting-into protrusion stripe extends in a direction in which the front frame extends, and wherein the first frictional biting-into protrusion stripe contacts a part of the first inclination bottom surface of the engagingly locking convex stripe of the lens, such that between the first frictional biting-into protrusion stripe and the location of contact near the lowest bottom portion of the V-shaped groove there is a section of the first inclination bottom surface that does not contact the first inclined bottom surface.