before proceeding to the detailed description of the preferred and alternate embodiments , several general comments can be made about the applicability and the scope of the invention . first , the glasses with which the invention may be used may be any of the wide variety known in the art , including prescription glasses , sun glasses , safety glasses and the like . second , the illustrated techniques for attaching the protective component to the stems of the glasses are illustrative and may be interchanged without departing from the spirit and scope of the present invention . the preferred fabric for use in the present invention is a stretchable fabric . a number of fabrics and materials have been found suitable , including silicon rubber , poly / cotton knits , nylon / lycra knits and acrylic / elastic knits . this allows the pouch to be stretched to accommodate and safely protect the glasses . for some embodiments , especially one which uses a retainer snap , such stretchability may not be required . further , a wide variety of fabric colors and textures can be employed . the fabric should , of course , be one which does not damage the glasses . in addition , the fabric may have self - polishing characteristics as the glasses are inserted and removed . it is also within the scope of the present invention to employ fabrics which include a cellular construction or into which hollow plastic tubes or other hollow devices may be placed , so that the pouch retains a water buoyancy for use with such activities as boating and the like . proceeding now to a description of the preferred and alternate embodiments , a retainer and protective cover 10 for eyeglasses 12 is illustrated both in a retainer configuration , in which the device retains the glasses on the head of a user , and in a cover configuration , in which the device serves as a protective storage pouch for the glasses . as shown in the figures , eyeglasses 12 are of a common type , including lenses 14 , 16 and a pair of stems 18 , 20 . as illustrated in fig1 cover 10 is adapted for attachment to stems 18 , 20 and may be slipped over the head of a user , resting behind the head for holding eyeglasses 12 in place . cover 10 is generally hollow and tubular in construction , having open - ended retaining extensions 22 and 24 formed to be slipped over and snuggly hold stems 18 and 20 of glasses 12 as described below . cover 10 is preferably formed of a single piece of fabric that is folded along an upper edge 25 into a tubular structure and hemmed along a lower edge 26 . alternatively , cover 10 may be formed of more than one fabric pieces , such as self - similar pieces sewn together along edges 25 and 26 . as best illustrated in fig3 side fabric panels of cover 10 include a broad center portion defining a pouch 27 . lower edge 26 , preferably hemmed from open ends 22 and 24 , follows the contour of pouch 27 and terminates at corners 28 of a central opening 29 through which eyeglasses 12 may be inserted into and removed from pouch 27 . a biasing hem 30 is sewn around the periphery of pouch 27 and at about the mid - point thereof , generally continuing a line formed by lower edge 26 at the point where it intersects corners 28 of opening 29 biasing hem 30 generally defines a bead along the outer surface of pouch 27 separating a first portion 32 of pouch 27 from a second portion 34 thereof , and tending to fold second portion 34 into first portion 32 as shown in fig2 . biasing hem 30 thus forms a &# 34 ; soft hinge &# 34 ; structure along which second portion 34 is attached to first portion 32 and along which the two portions move as second portion is tucked into pouch 27 as shown in fig1 and 2 , and removed therefrom as shown in fig3 . this feature of the invention permits case profile conveniently assume a relatively narrow profile when in the retainer configuration shown in fig1 while providing an enlarged cover configuration as described more fully below . in addition to biasing hem 30 , second portion 34 of pouch 27 includes a lower border 36 formed around aperture 29 . border 36 is preferably a folded hem formed of a stretchable stitch or elastic strip tending to close or slightly constrict border 36 , and thereby aperture 29 . in the region of border 36 , at approximately a longitudinal mid - point of pouch 27 , mating closure members 38 and 40 are provided . in the preferred embodiment illustrated , closure members 38 , 40 are mating snap - type closures that lie in mutually facing relation when second portion 34 of pouch 27 is folded within first portion 32 , as discussed below with respect to fig7 . alternatively , other mating closure devices may be utilized , such as button closures and the like . from the retainer configuration illustrated in fig1 and 2 , device 10 is converted to its cover configuration as follows . first , eyeglasses 12 are folded , and closure members 38 , 40 are uncoupled from one another within the folded pouch , and second portion 34 is removed or unfolded from first portion 32 . pouch 27 is then grasped in the region of aperture 29 , and inverted ( i . e ., turned inside - out ) over eyeglasses 12 , stretching border 36 around eyeglasses 12 and thereby enveloping them within pouch 12 as shown in fig4 . as shown in fig5 once eyeglasses 12 are lodged completely within inverted pouch 27 , mating closure members 38 , 40 will again be located in mutually facing relation . members 38 , 40 are then coupled to positively close aperture 29 and prevent eyeglasses 12 from falling or otherwise being removed from case 10 . fig7 and 8 illustrate , in cross section , the orientation of the portions of case 10 described above in their retainer and cover configurations . eyeglasses 12 are not shown in fig7 and 8 for the sake of clarity . as shown in fig7 in the retainer configuration , case 10 is folded or collapsed into a relatively narrow band or strip by nesting second portion 34 of pouch 27 within first portion 32 , with biasing hem 30 located at the bottom of the band . closure members may be mated in this configuration to prevent second portion 34 from falling or unfolding from first portion 32 . as shown in fig8 when case 10 is unfolded and inverted into its cover configuration , biasing hem 30 is located within pouch 27 along with retainer ends 22 , 24 ( not shown ). it should be noted that , due to the unfolding of pouch 27 ( as shown in fig3 ) and its inversion ( as shown in fig4 and 5 ), mating closure members 38 and 40 are once again located in mutually facing relation in the cover configuration shown in fig8 . thus , closure members 38 , 40 serve both to retain pouch 27 in its collapsed position ( fig7 ) as well as to close pouch 27 and positively hold the eyeglasses within the pouch in the expanded and inverted position ( fig8 ). a second embodiment of case 10 is shown in fig9 through 12 . in this embodiment , a pouch 27 is formed of the desired fabric by folding and sewing . the pouch 27 has an opening 29 along one edge while two elongate ends 22 and 24 are provided , each containing an elastomeric tube adapted to fit over , surround and releasably secure pouch 27 to glasses 12 . such tubular connections are well - known , in and of themselves . a cord 42 is provided about opening 29 and is free to move within a seam 44 ( see fig1 ) so that opening 29 may be reduced in size by pulling on cord 42 . a cord lock 46 , or similar clamping device or a type well known in the art , may be provided over cord 42 to facilitate keeping opening 32 at a desired size . fig1 through 12 illustrate how eyeglasses 12 are progressively inserted into pouch 27 . as shown in fig1 , eyeglasses 12 are first folded , effectively flipping pouch 27 which remains coupled to stems 18 and 20 . lock 46 is then drawn away from pouch 27 to permit opening 29 to be expanded to receive the glasses . the eyeglasses 12 are then progressively inserted into pouch 27 through opening 29 as shown in fig1 . it should be noted that in this embodiment , as eyeglasses 12 are inserted into pouch 27 , the pouch is effectively wrapped around the eyeglasses and progressively turned inside - out with the eyeglasses contacting the previously outwardly - facing surface of the pouch . once the eyeglasses are completely inserted into pouch 27 , pouch 27 is closed by drawing lock 46 along cord 42 and into contact with pouch 27 to effectively close opening 29 . it should be mentioned that alternative closure devices may be used with the pouch , particularly in the embodiment illustrated in fig9 through 12 . such closure devices might include snaps , buttons , zippers and the like . while the present invention has been illustrated in connection with four separate embodiments , several features of the invention are common to the embodiments , such as the ability to insert the glasses into the retainer without detachment of the retainer cords or tubes .
a protective device for being removably attached to a pair of eyeglasses includes a pouch into which the eyeglasses can be inserted , without removal of the attachment elements . the pouch is inverted between a retainer configuration wherein the eyeglasses are held to the head of a user and a cover configuration wherein the eyeglasses are lodged within the pouch . a positive closure permits the pouch to be closed in both the retainer and cover configurations and opened for insertion and removal of the eyeglasses .