Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Connectors
Patent
1997-05-12
2000-04-18
Mai, Huy
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Connectors
351113, 16228, G02C 522
Patent
active
060506865
ABSTRACT:
An elastic spectacle frame comprises, on one side, a male charnier consisting of one end of a rod (12) solid with the middle part of a transverse connecting hinge pin (14), and a bearing surface (26) facing at least each portion of the pin protruding from the rod. The pin and the bearing surface being normally biased towards one another in the longitudinal direction of the rod by an elastic biasing mechanism (20,30,32), but are selectively movable apart from one another against the action of the elastic biasing mechanism. On the other side, the hinge comprises a female charnier (42,52) having eyelets (45,55) whose periphery, against which the surface comes to bear, is in the form of a cam, wherein at least one of the eyelets has a radial passageway (46,56), and wherein the interstice (49,59) between the eyelets is at least as big as the rod (12). A passageway (46), at least as big as the rod (12) and directed facing the bearing surface (26), is provided in one of the two eyelets (45) of the female charnier (42). The interstice (59) between the eyelets (55) is at least as big as the diameter of the pin (14) and as the largest cross-sectional dimension of the rod, and a passageway (56) directed facing away from the bearing surface (26), and at least as big as the pin's diameter, is provided in each of the female charnier's two eyelets (55).
REFERENCES:
patent: 1504212 (1924-08-01), Carlson
patent: 4153347 (1979-05-01), Myer
patent: 5359370 (1994-10-01), Mugnier
patent: 5627608 (1997-05-01), Chao
Chevassus S.A.
Mai Huy
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