Patent ID: 6257720
Filing Date: 2001-07-10
Classification: G02C

Abstract:
In a pair of eyeglasses, a pair of glass rims, and a bridge between the glass rims comprising:a nose bridge having a recess at one end, said nose bridge having an inner space and a diametrically enlarged chamber inside;a connecting portion;a shaft with a flange or a washer at a head end, said shaft extending from inner space and having a threaded end;a spring wound around said shaft sandwiched in a compressed state in said chamber between said flange or washer at the head end of said shaft and washer(s) which abut a wall, partitioning said chamber and said inner space wherein said spring biases said shaft in the direction of the head end; anda threaded connection between the shaft threaded end and a thread in the connecting portion, wherein a rim is connected to said connecting portion which detachably engages said bridge under the pulling effect of said spring, wherein said rim can be turned around to turned back by pulling said rim including said connecting portion away from said bridge.