Device for fixing a structural part to an eyeglass lens
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United States of America Patent
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Jun 13, 2006
Grant Date -
Jun 16, 2005
app pub date -
Mar 27, 2003
filing date -
Apr 3, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus is described for fastening a constructional element (1) to a spectacle lens (2) with a butt end (8) of a constructional element (1) which overlaps the lens edge, with two parallel fastening pins (4) which project from the butt end (8) and form annular enlargements (5) which are barb-like in their cross section, and with plastic sleeves (6) which can be inserted into bores in the spectacle lens (2) and form a head overlapping the edge of the bore and in which the fastening pins (4) engage in an interlocking way under deformation of the sleeve wall from the side of the bore opposite of the heads. In order to provide advantageous constructional conditions it is proposed that the butt end (8) with the two fastening pins (4) is made of plastic, that the two plastic sleeves (6) are mutually connected via a joint stop head (7) and that the modulus of elasticity of the plastic of the fastening pins (4) corresponds to at least three times the modulus of elasticity of the plastic of the plastic sleeves (6).
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