Abstract: A screw part has a shank with a threaded portion having at least one external thread turn, and a sleeve that surrounds the shank in a circumferential direction around more than three-fourths of the circumference. The sleeve extends along a sleeve portion in a longitudinal direction of the shank. The sleeve has at least one radial elevation structure on an outer circumferential face. The at least one radial elevation structure has at least one structural element that has an elastic design in the radial direction. The at least one radial elevation structure has an extent, on the outer circumferential face of the sleeve along the longitudinal direction, that is greater than a width of the at least one structural element.

Abstract: A rim locker for spectacle frame comprises a first portion and a second portion which are connected to two edges of lens rim in cut-off position respectively. The second portion has a screw hole for inserting a screw and the first portion is having thread to let the screw in for fastening the lens rim. The screw further has a stopping cap and the first portion further has a cylinder housing for hiding and moving the stopping cap, so that when the rim-locker is opening, the stopping cap will moving along the track of the housing, and stop at the end to prevent the screw slip off from the rim-locker and protect the screw threads not strip off easily.

Abstract: Systems and methods of connecting components of eyeglasses or other brittle structures are disclosed. Fasteners such as screws can have compressible elements between them and a glass structure, for example, to disperse force and deter fracturing of the glass. Compressible elements can also conform to irregular cavities and surfaces to improve connections between components.

Abstract: Systems and methods of connecting components of eyeglasses or other brittle structures are disclosed. Fasteners such as screws can have compressible elements between them and a glass structure, for example, to disperse force and deter fracturing of the glass. Compressible elements can also conform to irregular cavities and surfaces to improve connections between components.

Abstract: The present invention relates to a locking apparatus with a spectacle structure, arranged between a spectacle lens having assembling holes and a frame, between a lens and an accessory, between different accessories, and between an accessory and a frame, and including a bolt connected rigidly with said frame, a hollow slotted-head pin, said hollow slotted-head pin having a tapered outer surface and an inner hole screwed on said bolt, and a T-shaped pellet, said pellet is provided with a tapered inner hole, said pellet is sheathed on the outside of said hollow slotted-head pin and is in close contact with the inner wall of the assembling hole of said accessories. The present invention has, relatively fewer components and is easy to assemble and disassemble. All the combined accessories for fixing lenses are located within the assembling hole of the lens after the assembly, the whole assembly has a concise and beautiful appearance with the lenses fixed stably on position.

Abstract: Eyeglass structure which includes a male and female connection of the lens holding rings of the glasses and a band connecting the temple pieces of spring or resilient material to gently grip the sides and rear of the head of a wearer to distribute the load and wherein the plane of the lens holding rings may be adjusted through a range of generally vertical planes.