Collapsible spectacles

Details Collapsible spectacles Collapsible spectacles

1996-04-08

1997-06-10

Dang, Hung

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Folding

351119, 351153, 2454, 16228, G02C 508, G02C 514, G02C 522, A41D 2720

Patent

active

056381468

ABSTRACT:
The invention relates to collapsible spectacles provided with two arms (4) connected to a flat lens frame (2) and which can be folded into a collapsed configuration in which they are coplanar and situated side-by-side with the lens frame (2), one at an upper long side and another at a lower long side of said lens frame (2). Each arm (4) comprises a first segment (5), constrained at a first hinge (6) to a halfway point of a smaller side of the lens frame (2), and being of about half a length of said smaller side, and a second segment (7) hinged to the first segment (5) and having a perpendicular axis to the axis of the first hinge (6).

REFERENCES:
patent: 4740069 (1988-04-01), Baum

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