Title:
【発明の名称】光学レンズ固定用の留め金
Document Type and Number:
Japanese Patent JP3073737
Kind Code:
B2
Abstract:
The clip-on sunglasses assembly includes four clasps for engaging the frame of eyeglasses. Each includes a screw which secures the sunglass lens within a recess in the clasp. The end of the screw is provided with a central recess defining a circular edge. As the screw is tightened, the edge contacts the lens and forms a circular groove in the lens surface by displacing a small amount of lens material. The circular contact area distributes the stress normally concentrated at a point on the lens by a conventional screw, thereby reducing the chances of cracking the lens. Two clasps are welded to the ends of a bridge member and affixed to pre-shaped lenses at marked locations. Each clasp has a bent tail bar enclosed by a heat shrinkable tube.
Inventors:
Easy
Application Number:
JP20882499A
Publication Date:
August 07, 2000
Filing Date:
July 23, 1999
Export Citation:
Assignee:
Easy
International Classes:
G02C1/02; G02C9/04; G02C5/00; (IPC1-7): G02C9/04; G02C1/02
Domestic Patent References:
| JP5977119U | ||||
| JP623023U | ||||
| JP637820U | ||||
| JP78826U | ||||
| JP723318U | ||||
| JP8504518A |
Other References:
【文献】登録実用新案3043006(JP,U)
Attorney, Agent or Firm:
Masao Okabe (13 others)