Spectacles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 30, 1991
Grant Date -
N/A
app pub date -
Jun 13, 1990
filing date -
Dec 15, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Cited Art Landscape
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