Patent ID: 6196679
Filing Date: 2001-03-06
Classification: G02C

Abstract:
An assembly enabling detachable fitting of a pair of auxiliary lenses to a pair of primary spectacles; the assembly including a pair of primary spectacles which releasably engage an auxiliary spectacle frame such that auxiliary lenses in the auxiliary frame are superimposed over primary lenses in the pair of primary spectacles when the auxiliary spectacle frame is fitted to the pair of primary spectacles;said pair of primary spectacles including;a primary frame having primary frame openings to receive and retain said primary lenses, said primary frame opening being separated by a primary bridge;primary extension members which pivotally engage arm members each having a free end which engages an ear of a wearer;first and second primary projections, each having a bottomless opening, each bottomless opening including an inner surface having an annular recess therein for receiving and retaining an incomplete ring clip;said auxiliary spectacle frame including:an auxiliary frame having auxiliary frame openings which hold auxiliary lenses and which are separated by an auxiliary bridge; andfirst and second auxiliary projections extending therefrom, said auxiliary projections each having a head section and a body section wherein at least a part of the head section has a larger diameter than at least part of the body section,such that, upon insertion of said auxiliary projections into said bottomless openings, said head sections act to momentarily increase the diameter of said incomplete ring clips to allow the auxiliary projections to fit snugly in said bottomless openings whereupon the deflected ring clips return to their original diameter around the body section of the auxiliary projections, thereby securing locking engagement between said auxiliary projections and said primary projections.