Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Connectors
Patent
1990-06-13
1991-07-30
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Connectors
351121, G02C 514, G02C 522
Patent
active
050354990
ABSTRACT:
Spectacles having a lens frame corner and an engaging arm end. The lens frame corner includes a parallelepiped block extending from the lens frame and having a top and a bottom surfaces. Each of the top and bottom surfaces of the block has a recess or a hole, a first groove having a semicircular section, and a second groove having a semicircular section at right angle with the first grooves. The arm end include a pair of parallel planar strips. The distance between the upper strip and the lower strip is such that it allows forcible insertion of the block of the frame corner. Each of the strip has a cylindrical projection facing each other which, in use, is inserted into the recess or the hole of the block and a linear projection having a semicircular section, which, in use, is inserted into one of the grooves of the block.
REFERENCES:
patent: 4699479 (1987-10-01), Metcalfe
Kawamoto Shuichi
Kitamura Kanji
Bovernick Rodney B.
Hokushin Corporation
Kawamoto Optical Industrial Company Limited
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