Patent ID: 6336250
Filing Date: 2002-01-08
Classification: G02C,Y10T

Abstract:
A spring hinge for eyeglasses which pivotally connects the temples of the eyeglasses to an armor of the eyeglasses, and allows the temples of the eyeglasses to pivot from a normal open position, in which the eyeglasses are wearable, inwardly to a folded position, and which further allows the temple to pivot outwardly beyond the normal open position, the spring hinge comprising;upper and lower connecting members provided on the inside of the temple, said members facing toward each other leaving a predetermined spacing therebetween; a pivot shaft for pivotably connecting the upper and lower connecting members to the armor of the glasses so that a temple may be folded from the normal open position inwardly to the folded position and vice versa; the armor having an arc periphery on its inside, which arc periphery is generally circular, with the pivot shaft being at its center, said armor having an extension (21) which extends beyond the arc periphery; a spring member provided on the inside of the temple said spring member having a flexible press portion for flexibly pressing the inside of the armor at the arc periphery during normal folding and unfolding of the glasses; the extension being positioned on the outside of the arc periphery such that an inside surface of the extension engages the spring when the temple is unfolded to its normal open position; whereby, when the temple is in the normal open position, and a sufficient additional force is exerted outwardly on the temple, the inside surface of the extension presses on the spring and bends it inwardly, thus allowing the temple to pivot outwardly beyond its normal open position.