Hinge elements for spectacles comprising a friction ring
AssigneeS. A. Vve Henry Chevassus
InventorJean Emain
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Abstract
The invention relates to an improvement in hinge elements for spectacles, constituted by three elements, of which the first two elements, respectively fast with the front of the spectacle frame and with one of the sides thereof, comprise a male tenon element engaged in a female mortise element, said elements being connected together by a third element constituted by a hinge pin. One of the first two elements of the hinge presents a housing in which is disposed an elastic member which exerts an axially directed braking force acting between the first two elements of the hinge. The invention is used for making hinge elements for spectacles.
Claims18
A hinge for use with spectacles comprising a female mortise element having two arms defining opposite inner faces, a male tenon element engaged between the opposed inner faces of said two arms, and a third element constituted by a hinge pin for connecting said female mortise element and male tenon element, wherein one of the first two elements of the hinge is formed with a cylindrical bore in which is disposed a removable compressible friction ring made of semi-elastic plastics material for accepting said hinge pin when said hinge pin is positioned to connect said female mortise element and male tenon elements, and for exerting an axially directed braking force acting on the two opposite inner faces of the arms of the female mortise element, said friction ring, in the stressed state, presenting between its two opposite faces, a height approximately equal to the thickness of the bore within which it is disposed.
Dependencies are inferred from the claim text.