Abstract:
A clothing pocket structure including a first sheet of fabric at least partially spaced apart from a second sheet of fabric, the first and second sheets of fabric together at least partially defining a semi-enclosed volume; and a retention device disposed between the first and second sheets of fabric, first and second side portions of the retention device being attached to one of the first and second sheets of fabric, a middle portion of the retention device being at least partially spaced apart from the one of the first and second sheets of fabric to which the retention device is attached so as to define a securement space between the retention device and the one of the first and second sheets of fabric, and the securement space being generally open at a top edge of the retention device so as to permit the passage of a device therein.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This patent application claims priority to, and incorporates by reference in its entirety, U.S. Provisional Patent Application No. 61/752,919, entitled “Clothing With Retention Structure In Pocket”, filed on Jan. 15, 2013. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The invention relates to clothing, and more specifically to methods and apparatuses for retaining items in pockets. 
     2. Background and Description of Related Art 
     Articles of clothing, such as pants and shirts, often include one or more pockets for holding various devices and objects, such as wallets, currency, mobile phones, etc. However, it is relatively common for the objects and devices being stowed in these conventional pockets to become inadvertently dislodged therefrom. This is particularly true when the person wearing the article of clothing with the one or more pockets is riding on a vehicle that is traversing rough terrain with many sudden bumps. For example, if the person is riding on an off-road vehicle, such as an all-terrain vehicle (ATV), the wallet or mobile phone disposed in the pocket of the wearer can easily be jarred loose from the confines of the pocket, and thus, be inadvertently lost forever. 
     U.S. Pat. No. 5,082,157 discloses an easily accessible concealed pocket. A belt passes through the belt loop and the container portion has a pocket opening which is vertically aligned with the belt loop and the belt. The pocket is received between an article of clothing and the wearer such that the belt forces the article of clothing inwardly against the wearer to close the pocket opening. In this way, the pocket is concealed within the article of clothing. When it is desired to remove valuables from the container, the wearer merely moves the belt outwardly, and has access to the container. Although, the device disclosed in U.S. Pat. No. 5,082,157 operates as an accessory to articles of clothing, but does not attempt to remedy the deficiencies of conventional pockets provided in the articles of clothing themselves. 
     Therefore, what is needed is an article of clothing with a retention structure disposed in a pocket thereof that is capable of securely retaining objects within the confines of the pocket so as to prevent the objects from becoming inadvertently dislodged therefrom. Moreover, a pocket retention structure is needed that can be easily integrated into the pockets of various articles of clothing. Furthermore, there is a need for a pocket retention structure that is compact, and thus, does not occupy an undue portion of the overall pocket volume. 
     BRIEF SUMMARY OF EMBODIMENTS OF THE INVENTION 
     Accordingly, the present invention is directed to a pocket with a retention device or structure and an article of clothing with a retention device or structure disposed in the pocket thereof that substantially obviates one or more problems resulting from the limitations and deficiencies of the related art. 
     In accordance with one or more embodiments of the present invention, there is provided an article of clothing that includes: a pocket structure, the pocket structure including a first sheet of fabric at least partially spaced apart from a second sheet of fabric, the first and second sheets of fabric together at least partially defining a semi-enclosed volume; and a retention device disposed between the first and second sheets of fabric, the retention device having a top edge, a bottom edge, a first side portion, a second side portion, and a middle portion, the first and second side portions of the retention device being attached to one of the first and second sheets of fabric, the middle portion of the retention device being at least partially spaced apart from the one of the first and second sheets of fabric to which the retention device is attached so as to define a securement space between the retention device and the one of the first and second sheets of fabric, and the securement space being generally open at the top edge of the retention device so as to permit the passage of a device into the securement space. 
     In a further embodiment of the present invention, the bottom edge of the retention device is generally open so as to permit the device to protrude slightly from the bottom edge of the retention device. 
     In yet a further embodiment, the retention device has a generally inverted trapezoidal shape. 
     In still a further embodiment, the retention device further comprises side edges extending between the top edge and the bottom edge, the side edges being inwardly tapered from the top edge to the bottom edge. 
     In yet a further embodiment, the retention device has a generally flat bottom V-shape. 
     In still a further embodiment, the second sheet of fabric is an inner sheet of fabric on the article of clothing, and the retention device is attached to the second sheet of fabric. 
     In yet a further embodiment, the retention device is attached to the second sheet of fabric by means of stitching on the first and second side portions thereof. 
     In still a further embodiment, the first sheet of fabric is an outer sheet of fabric on the article of clothing, and the retention device is attached to the first sheet of fabric. 
     In yet a further embodiment, the retention device is attached to the first sheet of fabric by means of stitching on the first and second side portions thereof. 
     In still a further embodiment, the article of clothing is selected from the group consisting of: pants, a shirt, a hooded sweatshirt, shorts, a coat, a hooded jacket, a skirt, a dress, jeans, sweat pants, dress pants, a polo shirt, and a dress shirt. 
     In accordance with one or more other embodiments of the present invention, there is provided a pocket on an article of clothing, the pocket including: a wall, the wall at least partially closing a volume; and a retention member extending between two ends, wherein each end of the retention member is fixed to the wall in the volume. 
     In a further embodiment of the present invention, the retention member has a generally inverted trapezoidal shape. 
     In yet a further embodiment, the retention member has a generally flat bottom V-shape. 
     In still a further embodiment, the retention member is formed from a resilient material. 
     In accordance with yet one or more other embodiments of the present invention, there is provided a clothing apparatus that includes: a pocket including at least one side wall; and a resilient band that is secured to the at least one side wall of the pocket at two ends of the band. 
     In a further embodiment of the present invention, the length of the band under tension or without tension is within one of the following ranges: (i) approximately ½ to approximately 1 inch; (ii) approximately ½ to approximately 3 inches; (iii) approximately 1 to approximately 3 inches; and (iv) approximately 2 to approximately 4 inches. 
     In yet a further embodiment, the width of the band is within one of the following ranges: (i) approximately ⅛ to approximately ½ inch; (ii) approximately ¼ to approximately ½ inch; (iii) approximately ¼ to approximately 1 inch; (iv) approximately ½ to approximately 1 inch; (v) approximately ½ to approximately 2 inches; and (vi) approximately 2 to approximately 3½ inches. 
     In still a further embodiment, the band is formed from a material selected from the group consisting of: woven elastic, knitted elastic, elastic netting, neoprene, or another stretchable material comprising rubber or polymer. 
     In yet a further embodiment, the band is formed from a material having an elastic modulus that is within one of the following ranges: (i) approximately 0.00001 to approximately 1 gigapascals; (ii) approximately 0.0001 to approximately 0.01 gigapascals; (iii) approximately 0.0001 to approximately 0.1 gigapascals; (iv) approximately 0.0001 to approximately 0.145 gigapascals; (v) approximately 0.001 to approximately 0.5 gigapascals; and (vi) approximately 0.001 to approximately 1 gigapascals. 
     In still a further embodiment, the article of clothing is selected from the group consisting of: pants, a shirt, a hooded sweatshirt, shorts, a coat, a hooded jacket, a skirt, a dress, jeans, sweat pants, dress pants, a polo shirt, and a dress shirt. 
     It is to be understood that the foregoing general description and the following detailed description of the present invention are merely exemplary and explanatory in nature. As such, the foregoing general description and the following detailed description of the invention should not be construed to limit the scope of the appended claims in any sense. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Advantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein: 
         FIG. 1  is a front, planar view of a first exemplary embodiment of the invention; 
         FIG. 2  is a perspective view of the first exemplary embodiment disposed in a pair of pants; 
         FIG. 3  is a front, planar view of a second exemplary embodiment of the invention; 
         FIG. 4  is a perspective view of the second exemplary embodiment disposed on a shirt; 
         FIG. 5  is a front, planar view of a third exemplary embodiment of the invention; 
         FIG. 6  is a perspective view of the third exemplary embodiment of the invention disposed in a first position in a pocket of a hooded sweatshirt, wherein the retention device is oriented in an angled position; 
         FIG. 7  is a perspective view of the third exemplary embodiment of the invention disposed in a second position in a pocket of a hooded sweatshirt, wherein the retention device is oriented in a generally upright position; 
         FIG. 8  is a perspective view of the third exemplary embodiment of the invention disposed in a pocket of a hooded jacket; 
         FIG. 9  is a perspective view of the third exemplary embodiment of the invention disposed in a pocket of a pair of pants; 
         FIG. 10  is a perspective view of the third exemplary embodiment of the invention disposed in a pocket of a shirt; 
         FIG. 11  is a perspective view of the third exemplary embodiment of the invention disposed in a pocket of a pair of shorts; 
         FIG. 12  is a transverse sectional view of the third exemplary embodiment of the invention, which is cut along the cutting-plane line A-A in  FIG. 6 ; and 
         FIG. 13  is an enlarged, cutaway perspective view of the third exemplary embodiment of the invention disposed in a pocket of a pair of pants, wherein the outer layer of the pocket is shown cutaway so as to more clearly reveal the details of the pocket retention device. 
     
    
    
     DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     A plurality of different embodiments of the invention is shown in the Figures of the application. Similar features are shown in the various embodiments of the invention. Similar features have been numbered with a common reference numeral and have been differentiated by an alphabetic suffix. Also, to enhance consistency, the structures in any particular drawing share the same alphabetic suffix even if a particular feature is shown in less than all embodiments. Similar features are structured similarly, operate similarly, and/or have the same function unless otherwise indicated by the drawings or this specification. Furthermore, particular features of one embodiment can replace corresponding features in another embodiment or can supplement other embodiments unless otherwise indicated by the drawings or this specification. 
     Referring now to the drawings wherein the showings are for purposes of illustrating embodiments of the invention only and not for purposes of limiting the same, and wherein like reference numerals are understood to refer to like components,  FIG. 1  shows an inside of a pocket  10  laid flat, without the top sheet  30  (shown in  FIG. 2 ), with a retention device or band  12  secured to the inside of the pocket  10 . The band  12  has a length  14  and a width  16 . The band  12  is secured to the pocket  10  at both ends  44 ,  46  of its length  14 . The band  12  is resilient, which means it can stretch when under tension and return to its original length when the tension is removed. 
     In alternative embodiments of the invention, the band&#39;s length  14  without tension or under tension can be within one of the following ranges: approximately ½ inch to approximately 1 inch, approximately ½ inch to approximately 3 inches, approximately 1 inch to approximately 3 inches, and approximately 2 inches to approximately 4 inches (or within one of the following ranges: ½ to 1 inch, ½ to 3 inches, 1 to 3 inches, and 2 to 4 inches, inclusive). In alternative embodiments, the band&#39;s width  16  can be within one of the following ranges: approximately ⅛ inch to approximately ½ inch, approximately ¼ inch to approximately ½ inch, approximately ¼ inch to approximately 1 inch, approximately ½ inch to approximately 1 inch, approximately ½ inch to approximately 2 inches, and approximately 2 inches to approximately 3½ inches (or within one of the following ranges: ⅛ to ½ inch, ¼ to ½ inch, ¼ to 1 inch, ½ to 1 inch, ½ to 2 inches, and 2 to 3½ inches, inclusive). 
     A first axis  18  extends along the length  14  of the band  12 . A second axis  20  extends parallel to a waist line of a person wearing an article of clothing  24  (see  FIG. 2 ) that includes the pocket  10 . In the first embodiment, a first angle  26  between the first axis  18  and second axis  20  can be within one of the following ranges: approximately 0 to approximately 15 degrees, approximately 0 to approximately 30 degrees, approximately 0 to approximately 60 degrees, approximately 15 degrees to approximately 30 degrees, approximately 15 degrees to approximately 60 degrees, approximately 30 degrees to approximately 60 degrees, approximately 15 degrees to approximately 90 degrees, and approximately 30 degrees to approximately 90 degrees (or within one of the following ranges: 0 to 15 degrees, 0 to 30 degrees, 0 to 60 degrees, 15 to 30 degrees, 15 to 60 degrees, 30 to 60 degrees, 15 to 90 degrees, and 30 to 90 degrees, inclusive). It is to be understood that these angular ranges are equally applicable to the other embodiments of the invention described hereinafter. 
     In the first embodiment of the invention, the band  12  can be secured to the inner pocket sheet  28  that is closer to the person or to the outer pocket sheet  30  that is further from the person. In an alternative embodiment, an inner pocket sheet  28  could be omitted and the outer pocket sheet  30  can be secured directly to the article of clothing  24  such that the article of clothing  24  acts as the inner pocket sheet  28 ; in such a case, the band can be secured to the article of clothing  24  or to the outer pocket sheet  30 . Conversely, in another alternative embodiment, the outer pocket sheet  30  could be omitted and the inner pocket sheet  28  can be secured directly to the article of clothing  24  such that the article of clothing  24  acts as the outer pocket sheet  30 ; in such a case, the band can be secured to the article of clothing  24  or to the inner pocket sheet  28 . 
     The pocket  10  can have an opening  32  that is straight or curved. The opening  32  can be at the top or sides of the pocket  10 , including at the corners of the pocket  10 .  FIG. 1  shows an embodiment with a curved opening  32  at the top and left corner of the pocket  10 . The opening  32  can have a midpoint  34 . A third axis  36  extends through the midpoint  34  in the direction tangential to the curved opening  32 . The band  12  can have a center point  38  along the band&#39;s length  14 . A fourth axis  40  is formed between the midpoint  34  and the center point  38 . In alternative embodiments, a second angle  42  formed between the third axis  36  and the fourth axis  40  can be within one of the following ranges: approximately 0 to approximately 90 degrees, approximately 30 degrees to approximately 90 degrees, approximately 45 degrees to approximately 90 degrees, approximately 60 degrees to approximately 90 degrees, and approximately 0 to approximately 60 degrees (or within one of the following ranges: 0 to 90 degrees, 30 to 90 degrees, 45 to 90 degrees, 60 to 90 degrees, and 0 to 60 degrees, inclusive). A first distance  48  is formed between the midpoint  34  and a first end  44  of the band&#39;s length  14 . A second distance  50  is formed between the midpoint  34  and a second end  46  of the band&#39;s length  14 . The second angle  42 , first distance  48 , and second distance  50  can vary, in alternative embodiments, as needed to position the band  12  within the pocket  10 . The first distance  48  and second distance  50  can, but do not have to, be the same length. The first distance  48  can be greater than or less than the second distance  50 . 
     In alternative embodiments of the invention, the band  12  can be secured to the pocket  10  such that the band  12  is under tension or not under tension, and the distance  14  between the first end  44  and second end  46  of the band&#39;s length  14  can be equal to, less than, or greater than the length  14  when the band  12  is not under tension. 
     The band  12  is made of a resilient material, such as, but not limited to, woven elastic, knitted elastic, elastic netting, neoprene, or another stretchable material comprising rubber or polymer. The band  12  can be made from combinations of materials. In alternative embodiments of the invention, the band  12  can have various elongation and/or elasticity factors. In alternative embodiments, the band  12  can include various textures on its outside surface, such as smooth, with raised dots or bumps, or ridged or ribbed. 
     In one or more embodiments of the invention, the band is formed from a material having an elastic modulus that is within one of the following ranges: approximately 0.00001 to approximately 1 gigapascals (GPa), approximately 0.0001 to approximately 0.01 gigapascals (GPa), approximately 0.0001 to approximately 0.1 gigapascals (GPa), approximately 0.0001 to approximately 0.145 gigapascals (GPa), approximately 0.001 to approximately 0.5 gigapascals (GPa), and approximately 0.001 to approximately 1 gigapascals (or within one of the following ranges: 0.00001 to 1 GPa, 0.0001 to 0.01 GPa, 0.0001 to 0.1 GPa, 0.0001 to 0.145 GPa, 0.001 to 0.5 GPa, and 0.001 to 1 GPa, inclusive). 
     In one or more embodiments, the retention device or band  12  is secured to the inner pocket sheet  28  or outer pocket sheet  30  using stitching or a suitable adhesive. In particular, the retention device or band  12  can be sewn to the inner pocket sheet  28  or outer pocket sheet  30  at each of its ends  44 ,  46 . Alternatively, the ends  44 ,  46  of the retention device or band  12  could be attached to the inner pocket sheet  28  or outer pocket sheet  30  using a suitable adhesive or glue. 
     The band  12  can hold an item inside the pocket  10 , such as item  56  (see  FIG. 2 ). Items that can be held by the band include, but are not limited to, a phone, a personal digital assistant (PDA), a wallet, keys, an mp3 player, an iPod, a flat object, and a flat rectangular object. 
       FIG. 2  shows a first embodiment of the invention with the article of clothing  24  being pants.  FIG. 4  shows another embodiment in which the article of clothing  24  is a shirt. In alternative embodiments, the article of clothing  24  can also be, but is not limited to, shorts, a coat, a skirt, a dress, jeans, sweat pants, dress pants, a polo shirt, or a dress shirt. 
       FIG. 3  shows a second embodiment of the invention where the first axis  18   a  is substantially parallel to the second axis  20   a .  FIG. 4  shows the alternative embodiment of  FIG. 3  on a shirt  24   a . The pocket opening  32   a  of  FIGS. 3 and 4  is straight and is at the top of the pocket  10   a . As shown in these figures, the top and bottom edges of the retention device or band  12   a  are disposed generally parallel to the top and bottom edges of the pocket  10   a . In other words, the first axis  18   a , which is longitudinally disposed along the band  12   a , is oriented substantially parallel to the second axis  20   a , which is generally parallel to the bottom edge of the pocket  10   a , and substantially parallel to the third axis  36   a , which is generally parallel to the top edge of the pocket  10   a . As illustrated in  FIG. 3 , the third axis  36   a  approximately passes through the midpoint  34   a  of the opening  32   a.    
     In a third embodiment of the invention, the retention device or band  12   b  has a generally trapezoidal shape (e.g., see  FIGS. 5-13 ), or more particularly, an inverted, generally trapezoidal shape wherein the top edge  58  (or upper base  58 ) of the trapezoid is greater in length than the bottom edge  60  (or lower base  60 ) of the trapezoid. The retention device  12   b  has a generally open top and bottom (i.e., the top edge  58  and bottom edge  60  of the retention device  12   b  is only stitched to the pocket sheet  28   a  in a stitching area  66 ). In this embodiment, the top edge  58  of the retention device  12   b  is disposed substantially parallel to the bottom edge  60  of the retention device  12   b , while the side edges  62 ,  64  of the retention device  12   b  are angled inwardly from the top edge  58  to the bottom edge  60  of the device  12   b . As shown in  FIG. 5 , a stitching area  66  is provided adjacent to each of the downwardly tapered sides  62 ,  64  of the retention device  12   b . In this illustrated embodiment, it can be seen that each of the opposed sides  62 ,  64  of the retention device  12   b  are secured to a pocket sheet  28   a  using a zigzag stitch  68  comprising a suitable thread. Advantageously, this inverted trapezoidal or generally flat bottom V-shaped configuration of the retention device  12   b  enables the item  56 , which is held within the device  12   b , to be securely wedged into place. The downwardly tapered design of the third embodiment of the retention device  12   b  makes it much less likely that the item  56  will become inadvertently disengaged from the retention device  12   b . As such, an item  56  will not fall out of a person&#39;s pocket when the retention device  12   b  is utilized. It is to be understood that the orientation (e.g., the angular orientation) of the retention device or band  12  within the pocket  10  described in conjunction with the first embodiment above is equally applicable to the third embodiment of the retention device or band  12   b.    
     In an exemplary embodiment of the invention, with reference to  FIG. 5 , the top edge  58  has a length  72  of approximately three and three-quarter (3¾) inches, the bottom edge  60  has a length  74  of approximately three (3) inches, the retention device  12   b  has a height  76  of approximately three (3) inches, and each side of the retention device  12   b  has a width  78  of approximately three and one-quarter (3¼) inches. In the exemplary embodiment, each stitching area  66  has a width  80  of approximately one-quarter (¼) of an inch. As such, the interior receiving space  84  of the retention device  12   b  (see  FIG. 12 ), which is disposed between the oppositely disposed stitching areas  66 , has a top edge length  86  of approximately three and one-quarter (3¼) inches and a bottom edge length  88  of approximately two and one-half (2½) inches. 
     In  FIG. 6 , the retention device or band  12   b  is shown in a first position in a pocket  10   b  of a hooded sweatshirt  24   b . As illustrated in this figure, the retention device  12   b  is angularly disposed within the pocket  10   b  of the hooded sweatshirt  24   b  so as to facilitate the insertion of an item  56  into the retention device  12   b  after the item  56  passes through the pocket opening  32   b . The dashed lines  70  in  FIGS. 5 and 6  diagrammatically illustrate the protruding nature of the retention device  12   b  from the inner sheet of the pocket  10   b , as well as its deformability. The item  56  is received within the space  84  between the inner surface of the retention device  12   b  and the outer surface of the inner sheet  28   a  of pocket  10   b  (see  FIG. 12 ). The retention device  12   b  is shown in a second position in a pocket  10   b  of a hooded sweatshirt  24   b  in  FIG. 7 . Rather than being angularly disposed as illustrated in  FIG. 6 , the retention device  12   b  of  FIG. 7  is oriented in a generally upright position (i.e., the top and bottom edges of the retention device  12   b  are generally parallel to the top and bottom edges of the pocket  10   b.    
     Referring to  FIG. 8 , it can be seen that the retention device or band  12   b  is angularly disposed within the pocket  10   c  of a hooded jacket  24   c . In  FIG. 9 , the retention device or band  12   b  is angularly disposed within the pocket  10   d  of a pair of pants  24   d . In  FIG. 10 , the retention device  12   b  is oriented in a generally upright position in the pocket  10   e  of a shirt  24   e  (i.e., the top and bottom edges of the retention device  12   b  are generally parallel to the top and bottom edges of the shirt pocket  10   e ). In  FIG. 11 , the retention device or band  12   b  is angularly disposed within the pocket  10   f  of a pair of shorts  24   f.    
     In  FIG. 12 , a transverse sectional view of the third embodiment of the invention is illustrated. This transverse section is cut along the cutting-plane line A-A in  FIG. 6 , but it is to be understood that this section is typical for the third embodiment of the invention. As shown in  FIG. 12 , the inner pocket sheet  28   a  and the outer pocket sheet  30   a  are spaced apart from one another by a gap  82  (i.e., at least portions of each sheet  28   a ,  30   a  are spaced from the one another by a gap  82 , wherein the geometric configuration of the gap  82  depends on the exact manner in which the pliable sheets  28   a ,  30   a  of fabric are deformed on the article of clothing). Referring again to  FIG. 12 , it can be seen that the middle portion of the retention device  12   b  is spaced apart from the inner pocket sheet  28   a  so as to define a securement space  84  between the retention device  12   b  and inner pocket sheet  28   a  (i.e., at least part of the middle portion of the retention device  12   b  is spaced apart from the inner pocket sheet  28   a , the geometric configuration of the securement space  84  depends on the exact manner in which the pliable retention device  12   b  is deformed relative to the inner pocket sheet  28   a ). 
     In  FIG. 13 , the retention device or band  12   b  is shown inside the pocket of a pair of pants  92 . The pocket of the pants  92  is disposed just beneath the belt  94  of the pants. As illustrated in  FIG. 13 , the retention device  12   b  is disposed between the inner pocket sheet  28   a  and the outer pocket sheet  30   a , which are spaced apart from another by the gap  82 . The retention device  12   b  is attached to the inner pocket sheet  28   a  of the pocket by the side stitching areas  66  with zigzag stitching  68 . As depicted in  FIG. 13 , the interior receiving space  84  of the retention device  12   b  is securely holding an object  90  (e.g., a smartphone  90 ) therein. When the object  90  is inserted into the interior receiving space  84 , the elastic material forming the retention device  12   b  is designed to elastically deform so as to allow the object  90  to be snuggly engaged by the retention device  12   b.    
     It is readily apparent that the aforedescribed embodiments of the pocket retention devices  12 ,  12   a ,  12   b  and the associated articles of clothing containing the same offer numerous advantages. First, the articles of clothing with the retention structures  12 ,  12   a ,  12   b  disposed in the pockets thereof are capable of securely retaining objects within the confines of the pockets so as to prevent the objects from becoming inadvertently dislodged therefrom. Secondly, the pocket retention structures  12 ,  12   a ,  12   b  described herein can be easily integrated into the pockets of various articles of clothing. Finally, the pocket retention structures  12 ,  12   a ,  12   b  are compact, and thus, does not occupy an undue portion of the overall pocket volumes. 
     Any of the features or attributes of the above described embodiments and variations can be used in combination with any of the other features and attributes of the above described embodiments and variations as desired. For example, the retention device orientations, materials, and material properties described in conjunction with the first exemplary embodiment are equally applicable to other embodiments of the invention described herein. 
     While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed and the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims. Further, the “invention” as that term is used in this document is what is claimed in the claims of this document. The right to claim elements and/or sub-combinations that are disclosed herein as other inventions in other patent documents is hereby unconditionally reserved.