Adjustable Lens Spectacle Apparatus

1. Field of the Invention

The field of invention relates to spectacle apparatus, and more particularly pertains to a new and improved adjustable lens spectacle apparatus wherein the same is arranged to alter magnification of a spectacle pair.

2. Description of the Prior Art

Magnification structure in association with spectacle apparatus has been utilized in the prior art to provide for enhanced magnification in the viewing of various objects. The instant invention attempts to overcome deficiencies of the prior art by providing a unitary organization wherein the rear and forward lens frames contained by the structure are relatively adjustable to alter magnification to provide for adjustable magnification in use. Prior art structure is exemplified in U.S. Pat. No. 3,449,043 to Houston wherein a spectacle structure utilizes a monocular lens mounted rearwardly of one of a plurality of lens members within a spectacle structure.

U.S. Pat. No. 4,195,918 to Freche, et al. sets forth a spectacle pair utilizing rotatable lens structure mounted to a forward surface of each spectacle lens to effect varying magnification in use.

U.S. Pat. No. 3,522,983 to Daniels sets forth a magnification lens mounted fixedly to a spectacle lens structure.

And similarly, the U.S. Pat. No. 3,456,327 to Keeler sets forth a manner of mounting magnification structure relative to a forward magnification lens.

As such, it may be appreciated that there continues to be a need for a new and improved adjustable lens spectacle apparatus as set forth by the instant invention which addresses both the problems of ease of use as well as effectiveness in construction and in this respect, the present invention substantially fulfills this need.

In view of the foregoing disadvantages inherent in the known types of spectacle apparatus now present in the prior art, the present invention provides an adjustable lens spectacle apparatus wherein the same utilizes a rear lens frame adjustably spaced relative to a forward lens frame to alter magnification between the forward lens pairs in use. As such, the general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new and improved adjustable lens spectacle apparatus which has all the advantages of the prior art spectacle apparatus and none of the disadvantages.

To attain this, the present invention provides a spectacle lens structure including a support frame mounting a rear slidable lens frame relative to a forward fixed lens frame, wherein the rear frame includes respective right and left temple legs, wherein each temple leg includes a drive motor rotatably mounting a drive screw to effect relative displacement of the rear lens frame relative to the forward lens frame to alter magnification of the spectacle structure in use. Additionally, a modification of the invention includes clamp structure mounted to the forward lens frame to effect distortion of the forward lens frame and the associated lenses to thereby alter magnification of the forward lens members mounted within the forward lens frame.

My invention resides not in any one of these features per se, but rather in the particular combination of all of them herein disclosed and claimed and it is distinguished from the prior art in this particular combination of all of its structures for the functions specified.

There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto. Those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.

Further, the purpose of the foregoing abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The abstract is neither intended to define the invention of the application, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.

It is therefore an object of the present invention to provide a new and improved adjustable lens spectacle apparatus which has all the advantages of the prior art spectacle apparatus and none of the disadvantages.

It is another object of the present invention to provide a new and improved adjustable lens spectacle apparatus which may be easily and efficiently manufactured and marketed.

It is a further object of the present invention to provide a new and improved adjustable lens spectacle apparatus which is of a durable and reliable construction.

An even further object of the present invention is to provide a new and improved adjustable lens spectacle apparatus which is susceptible of a low cost of manufacture with regard to both materials and labor, and which accordingly is then susceptible of low prices of sale to the consuming public, thereby making such adjustable lens spectacle apparatus economically available to the buying public.

Still yet another object of the present invention is to provide a new and improved adjustable lens spectacle apparatus which provides in the apparatuses and methods of the prior art some of the advantages thereof, while simultaneously overcoming some of the disadvantages normally associated therewith.

These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be had to the accompanying drawings and descriptive matter in which there is illustrated preferred embodiments of the invention.

The invention will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawings wherein:

FIG. 1 is an isometric illustration of a prior art magnification lens structure utilized in the spectacle art.

FIG. 2 is an orthographic top view of the lens structure as set forth in FIG. 1 of a prior art spectacle apparatus.

FIG. 3 is an isometric illustration of the instant invention.

FIG. 4 is an orthographic side view, partially in section, of the invention.

FIG. 5 is an orthographic view of section 5, as set forth in FIG. 4.

FIG. 6 is an orthographic view, taken along the lines 6--6 of FIG. 5 in the direction indicated by the arrows.

FIG. 7 is a diagrammatic illustration of electrical circuitry utilized by the invention.

FIG. 8 is an orthographic front view of a modified front lens frame member utilized by the invention.

FIG. 9 is an orthographic side view, taken along the lines 9--9 of FIG. 8 in the direction indicated by the arrows.

FIG. 10 is an isometric illustration of a modified configuration of the spectacle structure as utilized by the invention.

With reference now to the drawings, and in particular to FIGS. 1 to 10 thereof, a new and improved adjustable lens spectacle apparatus embodying the principles and concepts of the present invention and generally designated by the reference numeral 10 will be described.

The FIGS. 1 and 2 illustrate a typical prior art magnification lens structure as utilized in the spectacle art, as illustrated in U.S. Pat. No. 3,449,043, mounting a lens member rearwardly of one of the spectacle lenses, wherein the rear lens is fixedly mounted to the framework of the spectacle apparatus.

More specifically, the adjustable lens spectacle apparatus 10 of the instant invention essentially comprises a spectacle support frame plate 11 mounting a rear lens frame 12 slidably relative to the frame plate 11, with a forward lens plate 13 fixedly mounted in an orthogonal relationship to a bottom surface of the frame plate 11. The forward lens frame 13 and associated forward lens members 15 are formed of a shape retentent deformable polymeric material. The rear lens frame 12 includes associated rear lens members 14. Accordingly, the rear lens frame 12 includes respective right and left temple legs 16 fixedly mounted to the frame plate 11 in an orthogonal relationship relative to the rear lens frame 12 for mounting the spectacle apparatus to an individual. A respective right and left drive motor housing 18 and 19 mounted to the respective right and left temple legs 16 and 17 each include an associated reversible drive motor 20. Each drive motor 20 and its association with the lens frames 12 and 13 are exemplified in the FIG. 4 and are of an identical construction, whereas the description relative to the right temple leg is equally applicable to the left temple leg 17.

As illustrated in FIG. 4, the right temple leg 16 and the associated drive motor 20 contained within the housing 18 includes an externally threaded drive screw 21 rotatably mounted to the drive motor 20 and is threadedly mounted and directed through the lens frame 12 and rotatably mounted within a receiving bushing 22 (see FIG. 5) of the forward lens frame 13. A drive screw fixing head 23 is mounted to each forward distal end of each drive screw 21 to secure the drive screw relative to the front lens frame. A rigid abutment bushing 24 is mounted to a rear surface of the lens frame 13 and optionally includes an abutment screw 25 mounted rotatably within an abutment screw bore 26 within the bushing plate 24 that is arranged parallel relative to the drive screw 21 to effect abutment with the rear lens frame 12 to control relative spacing between the rear and forward lens frames 12 and 13 respectively controlling a minimal spacing therebetween. A reversing switch 27 in electrical communication with the associated drive motor of each respective right and left drive motor housing 18 and 19 of each respective temple leg through a battery 28 contained within reversing switch housing 29 effects selective reversing of each respective drive motor by reversing electrical polarity of each respective drive motor, and is in communication with the drive motor of the right drive motor housing by a first electrical conduit line 30 that in turn is connected to the drive motor of the left drive motor housing 19 through a second electrical conduit line 31. In this manner, simultaneous actuation of each drive motor of each temple leg is effected to effect selective spacing towards or away from the forward lens frame 13 by the rear slidable lens frame 12.

Reference to FIG. 8 illustrates the use of the invention utilizing a manner of effecting magnification of the forward lens frame 13 by effecting its convex displacement, as illustrated in phantom in FIG. 9. To this end, a right and left clamp screw 32 and 33 directed orthogonally and rotatably through the frame plate 11 extend downwardly along each respective right and left end of the forward lens frame 13 threadedly received within a respective right and left clamp leg 38 and 39 to effect selective projection of the right and left clamp leg 38 and 39 to a bottom edge underlying each respective lens 15 of the forward lens frame 13. A right and left lower clamp foot 36 and 37 are in abutment with a bottom edge of the forward lens frame medially of each respective lens cooperating with a respective right and left upper clamp foot 34 and 35. In this manner, the forward lens frame 13 may be deformed equally relative to each respective right and left lens of the forward lens members 15 by the respective right and left clamp screws 32 and 33 effecting deforming pressure to the forward lens frame 13 and the associated lenses 15. The shape retentive material forming the lenses and frame of the forward lens frame structure permits the organization to return to its original configuration upon release of pressure relative to the forward lens frame and thereby further permit altering for the magnification of the forward lens frame structure.

The FIG. 10 illustrates a housing enclosure that may be utilized by the invention to enclose the organization, as illustrated in the FIGS. 1-9, to provide covering of the organization and its components.

As to the manner of usage and operation of the instant invention, the same should be apparent from the above disclosure, and accordingly no further discussion relative to the manner of usage and operation of the instant invention shall be provided.

With respect to the above description then, it is to be realized that the optimum dimensional relationships for the parts of the invention, to include variations in size, materials, shape, form, function and manner of operation, assembly and use, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by the present invention.

Therefore, the foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.