Title:
METHOD FOR FIXING LENS OF SPECTACLES
Document Type and Number:
Japanese Patent JP2689099
Kind Code:
B2
Abstract:
PURPOSE: To prevent the damage of lenses and to improve safety and appearance.
CONSTITUTION: This method for fixing the lenses comprises arranging washers 3 consisting of an elastic material on both sides of the lens 1, bringing a supporting part 6 of a fixture 5 into contact with the surfaces of the washers 3 opposite to the lens 1, passing the leg part 11 of a screw 10 through the lens 1, the washers 3 and the supporting part 6 of this fixture 5, screwing a nut 20 to this leg part 1 to the elastic limit of the washers 3 and further, cutting off the leg part 11 projected from the nut 20 and just slightly loosening the screw 10 and the nut 20. Since the washers 3 are the elastic material, the screw 10 and the nut 20 remain tight without loosening even if the screw 10 and the nut 20 are combined and tightened to each other. The projecting leg part is cut off and the screw and the nut are just slightly loosened again after the nut 20 is screwed to the leg part and, therefore, even if the end face of the leg part is sharp, this end face is eventually sunk into the nut 20 and the lens 1 is kept free from flawing. Further, the safety is assured and the aesthetic appearance is not impaired.
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Inventors:
Ryuichi Otsuki
Marui Yoshito
Marui Yoshito
Application Number:
JP17010095A
Publication Date:
December 10, 1997
Filing Date:
May 31, 1995
Export Citation:
Assignee:
Nitto Seiko Co., Ltd.
International Classes:
G02C3/00; F16B39/24; G02C5/14; (IPC1-7): G02C3/00; F16B39/24; G02C5/14
Domestic Patent References:
JP53110150U |
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