although certain preferred embodiments and examples are disclosed below , it will be understood by those skilled in the art that the invention extends beyond the specifically disclosed embodiments to other alternative embodiments and / or uses of the invention and obvious modifications and equivalents thereof . thus it is intended that the scope of the invention herein disclosed should not be limited by the particular disclosed embodiment described below . as an example of a first embodiment of the inventive case 100 , fig2 is a top perspective view of the case in a closed configuration , fig3 is a bottom perspective view of the case of fig2 ; and fig4 a is a sectional view 4 a - 4 a of fig2 . case 100 includes a first case portion 110 , which is the top of the case , and a second case portion 120 , which is the bottom of the case . case portions 110 and 120 are joined at a hinge 103 and include a clasp 101 to keep case 100 closed . in fig2 , 3 , and 4 a , case 100 is in closed configuration defining an internal volume v , defined by bounding top surface 401 and bottom surface 403 , and which is large enough to contain an article which is shown , for example and without limitation , as a prior art nipple shield a . in one embodiment , case 100 has dimensions of d = 8 mm and h = 50 mm . the structure of case 100 is shown in greater detail in fig4 b , which is an exploded sectional view of fig4 a , fig5 , which is a bottom view 5 - 5 of case portion 110 , and in fig6 , which is a top view 6 - 6 of case portion 120 . case portion 110 has a domed portion 111 with a rim 113 , and several inward and radial ridge or extensions 115 that each has an edge 117 , and a first clasp piece 501 and a first hinge piece 503 . case portion 120 has a base 121 with a rim 123 , and several inward and radial ridges or extensions 125 that each has an edge 127 , and a second clasp piece 601 and a second hinge piece 603 . case bottom 120 also has a plurality of holes 129 through portion 121 . in one embodiment , extensions 115 and 125 protrude into case 100 and form part of surfaces 401 and 403 such that , when the case is closed , edges 117 and 127 approximate the shape of the article to be held , such as that of nipple shield a . fig7 a , 7 b , and 7 c are views of case 100 in an open configuration , where fig7 a is a perspective view showing nipple shield a in place , fig7 b is a rear elevational view of the case , and fig7 c is a perspective view with the nipple shield removed from the case . fig8 is a view the first embodiment case in a fully open configuration , showing the inner surfaces of case portion 110 and 120 . as shown in fig5 , 6 , 7 a and 7 b , clasp 101 works by the cooperation of first clasp piece 501 and second clasp piece 601 . pieces 501 and 601 may interlock when case 100 is closed , and the twisting of the pieces or deforming rims 113 and / or 123 may release clasp 101 . the figures also show hinge 103 as being formed from the cooperation of first hinge piece 503 and second hinge piece 603 . pieces 503 and 603 may , for example , include a pin and pin notches to permit the first case portion 110 and second case portion 120 to rotate and allow the case to open or , alternatively , hinge 103 may be an integral part of case top 110 and case bottom 120 that is engineered to bend and work as a hinge . in certain embodiments , case 100 is formed , for example and without limitation , from polypropylene manufactured by injection molding . thus , for example , case 100 may be formed by molding a plastic to provide solid portions 111 and 121 and extensions 115 and 125 that are approximately 2 to 4 mm thick . in certain embodiments , there may be from 1 to 12 extensions 115 and 125 . in certain other embodiments , there may be from 1 to 20 holes or more , distributed along portion 121 . although rims 113 and 123 are shown as being generally circular , matching rims of other shapes are within the scope of the present invention . case 100 thus may be opened , as in fig7 c , to allow a user to place nipple shield a within the case , as in fig7 a and 7b , and then closed , as in fig4 a to contain the nipple shield . the shape of volume v permits the nipple shield to be held in place with the minimum of movement or contact by case 100 . holes 129 allows for the drying of nipple shield a by allowing humid air within volume v to be exchanged with air outside of case 100 and allows the nipple shield to be stored in a clean environment . as shown in fig8 , case 100 may include rings 801 that may be used for attaching a string or chain to the case . fig9 and 10 are sectional views of a second embodiment case 200 . case 200 is generally similar to case 100 , except as discussed below . case 200 illustrates an alternative embodiment , wherein the case is rectangular and ridges 115 and 125 are in a linear arrangement along first case portion 110 and second case portion 120 . case 200 is not specifically shaped for storing any particular article , which may be , for example , a dental retainer in fig9 and a baby bottle nipple in fig1 . case 200 provides for the storage of articles with minimal case contact and having holes 129 for ventilation . thus , while there has been described what is believed to be the preferred embodiment of the invention , those skilled in the art will recognize that other and further modifications may be made thereto without departing from the spirit of the invention , and it is intended to claim all such changes and modifications as fall within the scope of the invention . for example , and with out limitation , different clasping and / or hinging mechanisms may be employed , or case top 110 and case bottom 120 may be separate items that snap together to form an enclosed volume , the inner and / or outer geometries may be different and my for example , have oval or square rims 112 and 123 , or may be less domed shape to facilitate stacking of the cases . it should be appreciated that in the above description of exemplary embodiments of the invention , various features of the invention are sometimes grouped together in a single embodiment , figure , or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects . this method of disclosure , however , is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim . rather , as the following claims reflect , inventive aspects lie in less than all features of a single foregoing disclosed embodiment . thus , the claims following the detailed description are hereby expressly incorporated into this detailed description , with each claim standing on its own as a separate embodiment of this invention .
a case is described for use , for example and without limitation , with a nipple shield or nipple protector . the case , which has an interior volume to contain a nipple shield / protector , generally provides a rigid container to protect a nipple shield / protector and to protect it from the environment . certain embodiments provide rigid container that may be opened to place or remove a nipple shield / protector and closed to hold the shield / protector with a minimal amount of contact . the case may also include ventilation holes to permit drying of the contents of the case .