Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Temples
Patent
1997-10-27
1999-09-28
Mai, Huy
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Temples
351114, 351153, 16228, G02C 516, G02C 522
Patent
active
059597151
ABSTRACT:
The present invention relates to a resilient hinge for spectacle frames. The hinge includes an inner male or female knuckle fixed to the end of a frame lug extending in a direction and an arm substantially in the extension of the lug and abutting against the lug when the arm is in its normal open position. The inner side of the arm is connected to the knuckle by means of a rigid return device which can rotate freely about the knuckle and operating by bending. The pivot point of the return device about the swivel pin of the knuckle or the swivel pin of the knuckle itself is flowing and able to move between two extreme positions respectively corresponding to the normal open position and to an additional position in which the arm is moved beyond the normal open position. The knuckle and the end of the lug are placed side by side so as to create an outer recess, so that when the arm is moved beyond its normal open position, it rests pivotingly against the end of the lug acting as a stop, thus subjecting the return device to a bending stress, which tends to bring the arm into the normal open position.
REFERENCES:
patent: 3790259 (1974-02-01), Leblanc
patent: 3923384 (1975-12-01), Leblanc
Chevassus S.A.
Mai Huy
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