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US 5,293,185 AGranted
Eyeglass frame permitting interchanging of lenses
OwnerRay A. Berger, David H. Fosterinventors
Life of this patent
Estimating the term…
Abstract
An eyeglass frame having removable lenses, comprising of lens rings which are split into an upper and lower ring portion. Interposed between the upper and lower ring portions, and forming an integral part of the frame and positive actuating means to force open and draw closed the split lens rings to facilitate insertion and removal of lens. Several spices of eyeglass frame are visualized The preferred spieces utilizes a coil spring and resilient rod. Another spieces visualized utilizes several serrated coupling edges and an actuating fulcrum.
Claims6
An eyeglass frame adapted to receive removable lenses comprising:
- a. a pair of split lens rings wherein each of said lens rings includes a projection to receive and retain a prescription eyeglass lenses;
- b. temple means endured to each of said lens rings;
- c. at least one resilient rod and coil spring locking device connected to each of split lens rings for opening and closing said split to allow said eyeglass to be retained to removed from said split lens, said resilient rod and coil spring locking device forming an integral part of said split and capable of being loosened or tightened by hand without the said of a separate instrument.
Dependencies are inferred from the claim text.