The present invention relates to a glasses leg spring hinge structure, comprising a glasses leg, plurality of metal rings, a rotating shaft, a leaf spring and a mounting head, wherein the metal rings are fixedly connected to a head of the glasses leg, wherein the rotating shaft is arranged in the metal rings, wherein the leaf spring is arranged at the head of the glasses leg, wherein the leaf spring is located below the rotating shaft, wherein a rotating shaft groove is formed in a side surface of the rotating shaft, wherein the mounting head is T-shaped and wherein a head of the mounting head is inserted into the rotating shaft groove.

A hinge and joint for a pair of eyeglasses is disclosed. A split frame has upper and lower rim end pieces that bend and extend rearwardly. A vertically-extending hollow shaft is provided on the end of a temple. A spring or springs are positioned laterally between the rim end pieces and the shaft, such that the shaft bears against the spring or springs. A U-shaped housing fits over the exterior top, bottom, and side of the joint and has a pair of aligned slots in top and bottom flanges. A pin is placed through the aligned slots in the housing and the shaft of the temple. Lateral force provided by the spring or springs biases the joint away from the aligned position, and that force, in combination with upper and lower shoulders on the pin, keep the joint and hinge together.

Provided herein are methods of preparing eyewear products made of a cellulose ester, a nylon or a polyester by simple and inexpensive single-nozzle or multi-nozzle 3D printers, wherein the eyewear products have a continuous range of colors or a gradual color change. Also provided herein are eyewear products made of a cellulose ester, a nylon or a polyester prepared by the methods disclosed herein.

A composite sheet material is provided. The composite sheet material includes a rigid portion that defines an opening. The composite sheet material further includes a flexible material received within the opening and adapted to attach with the rigid portion to form a flexible portion of the sheet material.

In an embodiment, a hinge for a fluid-filled lens assembly includes a base having a first end configured to connect to a temple arm of the lens assembly and a second end configured to connect to a frame of the lens assembly, wherein the base includes a gap that is shaped to allow for tubing to pass from the first end to the second end of the base. In an embodiment, the first end of the base includes a cammed surface configured to engage a surface of the temple arm. In an embodiment, the first and second ends of the base are configured to flex around a rotation axis of the hinge.

The present invention relates to a glasses leg spring hinge structure, comprising a glasses leg, plurality of metal rings, a rotating shaft, a leaf spring and a mounting head, wherein the metal rings are fixedly connected to a head of the glasses leg, wherein the rotating shaft is arranged in the metal rings, wherein the leaf spring is arranged at the head of the glasses leg, wherein the leaf spring is located below the rotating shaft, wherein a rotating shaft groove is formed in a side surface of the rotating shaft, wherein the mounting head is T-shaped and wherein a head of the mounting head is inserted into the rotating shaft groove.

A pair of eyeglasses with securing temples having snap-steel interiors. These temples comfortably wrap partially about a user's head, thereby securing the eyeglasses to the user's head. The snap steel transforms the temples from a first, rigid position where the glasses can be easily stored and transported to a second, wrapped position where the temples wrap about and contour to a user's head. The temples and the frame are manufactured from the same piece of material.

Provided is an eyeglass frame with a symmetrical structure. The eyeglass frame includes an earpiece frame, a main body, a hinge, and a support frame. The earpiece frame has a bar-shaped structure in which a width and an angle thereof vary according to the length thereof to be placed on the ear of a user. The main body is connected to the earpiece frame through a hinge, serves as a pivot that pivots on the hinge, and has an inner circumference of a closed curve receiving a lens. The hinge allows the earpiece frame to be inwardly folded toward the main body through pivoting of a predetermined angle. The support frame is disposed under the main body along an outer circumference of the main body and is spaced from the main body by a predetermined interval.

A hinge for the articulated joining of eyeglass frame temples to their respective end pieces of the front of the frame, without requiring welding of eyelets or of other joining parts to the end pieces of the front and temple. The hinge is constituted by a pair of independent outer eyelets engaged with two tines provided at the hingeing end of the temple, and by a middle eyelet (10) engaged with two tines provided at the two side hingeing end pieces of the front of the eyeglass frame. The middle eyelet includes two coaxial cavities with contoured bottom surfaces that define circular or radial cams, these surfaces rotating and sliding on corresponding and mutually opposed radial cam surfaces of the outer eyelets which, with the rotation of the temples with which they are associated, cause an axial translational movement of those outer eyelets.

Glasses include a main body, a glasses leg, and a connecting device. The glasses leg is connected to an end portion of the main body through the connecting device in such a way that the glasses leg is rotatable. The connecting device includes: a first connecting member, a second connecting member, and an elastic member, where the first connecting member is arranged on the end portion of the main body, a first end of the second connecting member is hinged with the first connecting member, a second end of the second connecting member is hinged with the glasses leg, and the elastic member is located between the second connecting member and the glasses leg, where a first elastic end of the elastic member abuts against the glasses leg, a second elastic end of the elastic member abuts against the second connecting member.