Patent Publication Number: US-8985358-B2

Title: One piece reversible closure and container system

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of co-pending U.S. application Ser. No. 13/664,887 filed Oct. 31, 2012, and entitled “One Piece Reversible Closure and Container System,” which claimed priority as a continuation in part of U.S. Design application Ser. No. 29/430,710 filed Aug. 29, 2012, and entitled “Pharmaceutical Cap,” which claimed priority as a continuation-in-part of U.S. Design Pat. No. D679,598 and U.S. Design Pat. No. D680,001, both of which were filed May 22, 2012, and entitled “Pharmaceutical Cap,” the contents of which are incorporated by reference herein in their entireties. 
    
    
     FIELD 
     This disclosure relates to a reversible child resistant closure. More particularly, this disclosure relates to a one-piece reversible child resistant closure which may be applied to a vial or other container in either a child resistant mode or a non-child resistant mode. 
     BACKGROUND 
     There are many types of child resistant closure systems described in the art. While many child resistant caps effectively provide protection against the danger of small children being able to remove potentially harmful contents, e.g. pills, from vials or other containers, they also provide a problem for a considerable portion of the adult population that require medication but lack sufficient manual dexterity or strength to remove the child resistant cap. This is of a particular concern to the elderly population or people suffering from arthritis and other disabling diseases. 
     Continuous threaded, torque actuated child resistant caps are a popular type of child resistant closures. These caps involve the use of two parts, one part rests above the other part in an axial configuration and requires both a rotational and downward action to engage for removal. These caps are used in literally thousands of various applications and packaging configurations due to the universally understood push and turn structures and ease of use and adaptation in a wide variety of automated filing lines and processes. Most of these prior art torque actuated child resistant closures are continuously in a child resistant mode and, therefore, can pose a problem to the segment of the population needing the pharmaceuticals contained therein, but lacking the manual dexterity or strength to open the axially, torque actuated closures. 
     This particular problem has been addressed by the development of closure systems having both a child resistant mode and a non-child resistant mode such that, in the non-child resistant mode, the closures are more easily opened by adults. However, many such caps have a complex, multipart structure making the caps expensive and/or difficult to convert between the child resistant and non-child resistant configurations. One example of such a closure is disclosed in U.S. Pat. No. 5,579,934, (the &#39;934 patent). The &#39;934 patent proposes a container closure that is selectively manipulatable between a configuration which resists opening by children and a configuration which may be easily opened without special manipulation of the closure. Specifically, the closure is manipulated into its non-child resistant mode by “pressing down” on the central portion of the top surface of the closure. 
     Although this type of closure provides an advance in the art of protection against the danger of small children being able to remove it from vials or other containers, the cap is made with two separately manufactured pieces that must be assembled. These aspects of the cap of the &#39;934 patent, as well as other caps sharing these aspects, increases both the manufacturing cost and assembly time for the caps. Further, these caps cannot be sealed with tamper resistant liners in an induction sealing process as the two-piece cap includes an inner component that protrudes into the opening of the container and would break the seal. 
     Additionally, many caps that are convertible between a child resistant mode and non-child resistant mode have lacked the capability to properly include a warning to the consumer once this closure has been converted to its non-child resistant configuration. This warning, or message, is normally required by the Consumer Product Safety Commission to alert users that the closure has been converted into the non-child resistant configuration. 
     In light of the foregoing, what is needed in the art is a reversible one piece child resistant closure and one piece child resistant closure and container system that is efficient to manufacture and use. The closure and container system preferably should provide a warning to the user when the closure system is in a non-child resistant mode and is operable to be used in conjunction with an induction sealing system. 
     SUMMARY 
     A closure is disclosed for use with a container having a neck including a container engaging structure and a container locking mechanism. The closure has a child resistant mode when applied to the container in a child resistant configuration and a non-child resistant mode when applied to the container in a non-child resistant configuration. The closure includes a circumferential side wall having an interior surface, a first section, a second section, and a solid divider. The first section includes a first closure engaging structure disposed on the interior surface of the circumferential side wall configured to contact and interact with the container engaging structure when the closure is in the non-child resistant configuration. The second section includes a second closure engaging structure disposed on the interior surface of the circumferential side wall configured to contact and interact with the container engaging structure when the closure is in the child resistant configuration and a closure locking mechanism configured to engage the container locking mechanism for restricting axial movement of the closure with respect to the container when the closure is in the child resistant mode. The solid divider is disposed between the first section and the second section for closing an opening of the container when the closure is installed on the container in the non-child resistant mode and the child resistant mode. In preferred embodiments, the circumferential side wall, first section, second section, and divider are formed as a unitary one-piece closure. 
     According to some embodiments, the first closure engaging structure is a continuous thread and the second closure engaging structure is a segmented thread. In other embodiments, both the first closure engaging structure and the second closure engaging structure are segmented threads. 
     According to certain embodiments, no part of the closure extends into the opening of the container when the closure is installed on the container in the child resistant mode and the non-child resistant mode. The closure may also include a tamper resistant liner configured to be inserted adjacent the divider in one of the first section and the second section for sealing the opening of the container in an induction sealing process. 
     According to some embodiments, warning indicia is molded into the divider such that the warning information is visible when the closure is in the non-child resistant mode. In other embodiments, the closure includes a first liner and a second liner, the first liner configured to be inserted into the first section such that the first liner is visible when the closure is installed on the container in the child resistant mode and the second liner configured to be inserted into the second section such that the second liner is visible when the closure is installed on the container in the non-child resistant mode. The second liner preferably includes warning indicia indicating that the closure is in the non-child resistant mode. 
     According to other embodiments, the divider is at least partially see-through and the closure includes a liner having a first side and a second side. The liner is configured to be inserted in one of the first section and the second section such that the first side is viewable when the closure is installed on the container in the non-child resistant mode and the second side is viewable when the closure is installed on the container in the child resistant mode. The first side of the liner preferably includes warning indicia indicating that the closure is in the non-child resistant mode. 
     According to another embodiment of the disclosure, a reversible child resistant closure system having a child resistant mode and a non-child resistant mode is disclosed. The reversible child resistant closure system includes a container and a unitary one piece closure. The container includes a neck having a container engaging structure disposed on an outer surface of the neck and a container locking mechanism. The unitary one piece closure includes a circumferential side wall having an interior surface, a first section, a second section, and a solid divider. The first section has a first closure engaging structure disposed on the interior surface of the circumferential side wall configured to contact and interact with the container engaging structure when the closure is installed on the container in a non-child resistant configuration. The second section includes a second closure engaging structure disposed on the interior surface of the circumferential side wall configured to contact and interact with the container engaging structure when the closure is installed on the container in a child resistant configuration and a closure locking mechanism configured to engage the container locking mechanism for restricting axial movement of the closure with respect to the container when the closure is installed on the container in the child resistant mode. The solid divider is disposed between the first section and the second section for closing an opening of the container when the closure is installed on the container in the non-child resistant mode and the child resistant mode. 
     According to some embodiments, the container is injection molded. In other embodiments, the container is blow molded. 
     According to another embodiment of the disclosure, a closure for use with a container having a neck including a container engaging structure and a container locking mechanism is disclosed. The closure has a child resistant mode when applied to the container in a child resistant configuration and a non-child resistant mode when applied to the container in a non-child resistant configuration. The closure includes a circumferential side wall having an interior surface, a first section, a second section, and a solid divider. The first section includes a first engaging thread disposed on the interior surface of the circumferential side wall configured to interact with the container engaging structure when the closure is installed on the container in the non-child resistant configuration. The second section includes a second engaging thread disposed on the interior surface of the circumferential side wall configured to interact with the container engaging structure when the closure is installed on the container in the child resistant configuration and a closure locking mechanism configured to engage the container locking mechanism for restricting axial movement of the closure with respect to the container when the closure is installed on the container in the child resistant mode. The solid divider is disposed between the first section and the second section for closing an opening of the container when the closure is installed on the container in the non-child resistant mode and the child resistant mode. The closure according to this embodiment also includes a first liner and a second liner. The first liner is disposed in the first section having first liner indicia printed thereon such that the first liner indicia is visible when the closure is installed on the container in the child resistant mode. The second liner is disposed in the second section having second liner indicia printed thereon such that the second liner indicia is visible when the closure is installed on the container in the non-child resistant mode. 
     According to some embodiments, the circumferential side wall, first section, second section, and divider are formed as a unitary one-piece closure. The second liner indicia preferably includes warning indicia indicating that the closure is in the non-child resistant mode, and the first liner and/or second liner indicia may include promotional information. 
     According to yet another embodiment of the disclosure, a closure for use with a container having a neck including a container engaging structure and a container locking mechanism is disclosed. The closure has a child resistant mode when applied to the container in a child resistant configuration and a non-child resistant mode when applied to the container in a non-child resistant configuration. The closure includes a circumferential side wall having an interior surface, a first section, a second section, and a solid divider. The first section includes a first closure engaging structure disposed on the interior surface of the circumferential side wall configured to contact and interact with the container engaging structure when the closure is in the non-child resistant configuration. The second section includes a second closure engaging structure disposed on the interior surface of the circumferential side wall configured to contact and interact with the container engaging structure when the closure is in the child resistant configuration and a closure locking mechanism configured to engage the container locking mechanism for restricting axial movement of the closure with respect to the container when the closure is in the child resistant mode. The solid divider disposed between the first section and the second section for closing an opening of the container when the closure is installed on the container in the non-child resistant mode and the child resistant mode. The solid divider is at least partially transparent, and the circumferential side wall is substantially opaque. 
     According to some embodiments, the circumferential side wall, first section, second section, and divider are formed as a unitary one-piece closure. The closure includes a liner including a first side and a second side. The liner is configured to be inserted in one of the first section and the second section such that the first side is viewable when the closure is installed on the container in the non-child resistant mode and the second side is viewable when the closure is installed on the container in the child resistant mode. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Further advantages of the disclosure are apparent by reference to the detailed description when considered in conjunction with the figures, which are not to scale so as to more clearly show the details, wherein like reference numbers indicate like elements throughout the several views, and wherein: 
         FIG. 1A  is a side perspective view of a reversible child resistant closure system in a child resistant mode according to one embodiment of the disclosure; 
         FIG. 1B  is a side perspective view of a reversible child resistant closure system in a non-child resistant mode according to one embodiment of the disclosure; 
         FIG. 2  is a side perspective view of a container of a reversible child resistant closure system according to one embodiment of the disclosure; 
         FIGS. 3A-3D  are side perspective views of a closure of a reversible child resistant closure system according to one embodiment of the disclosure, oriented with a non-child resistant section located on the top and a child resistant section located on the bottom according to one embodiment of the disclosure; 
         FIGS. 4A-4D  are side perspective views of a closure of a reversible child resistant closure system according to one embodiment of the disclosure, oriented with a non-child resistant section located on the top and a child resistant section located on the bottom according to another embodiment of the disclosure; 
         FIG. 5  is a perspective view of the closure oriented so that the child resistant side is facing upward according to one embodiment of the disclosure; 
         FIG. 6  is a side cross-sectional view of the closure according to one embodiment of the disclosure; 
         FIG. 7  is side perspective view of the closure being applied to a container in the child resistant configuration according to one embodiment of the disclosure; 
         FIG. 8  is side cross-sectional view of a reversible child resistant closure system in the child resistant mode according to one embodiment of the disclosure; 
         FIG. 9  is a top plan view of the closure with the non-child resistant side facing up according to one embodiment of the disclosure; 
         FIG. 10  is a top plan view of the closure with the child resistant side facing up according to one embodiment of the disclosure. 
         FIGS. 11A-11D  are top views of the closure having various liners according to embodiments of the disclosure; and 
         FIGS. 12A-12D  are top views of various liners according to embodiments of the disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     The disclosure relates to a reversible child resistant closure system primarily directed for use with containers intended to store and dispense pharmaceutical products and the like. However, the system may also be used with containers intended to have a child resistant mode and a non-child resistant mode irrespective of its contents. 
     Referring first to  FIGS. 1A-1B , there is shown a reversible child resistant closure system  10  according to the disclosure.  FIG. 1A  shows the closure system  10  in its child resistant mode, and  FIG. 1B  shows the same closure system  10  in its non-child resistant mode. The closure system  10  includes a container  12  and a one piece reversible child resistant closure  40 . 
     Referring to  FIG. 2 , the container  12  includes a body  13  and a neck  14 . The neck  14  includes a container engaging structure  18  disposed on an exterior of the neck  14 , a container opening edge  20  defining a container opening  22 , and a bottom edge  24  opposite the container opening edge  20 . In preferred embodiments, the bottom edge  24  of the neck  14  is defined by a rim  25 . In some embodiments, the neck  14  may have substantially the same diameter as the body  13 . However, in other embodiments, the neck  14  may have a smaller diameter than the body  13  of the container  12 . The engaging structure  18  is operable to interact with a corresponding structure on the reversible child resistant closure  40  to secure the closure  40  to the container  12 . In preferred embodiments, as shown in  FIG. 2 , the engaging structure  18  includes one or more threads. However, other suitable engaging structures  18  may be used including beads, cams, lugs and the like. 
     Disposed adjacent the bottom edge  24  of the neck  14  is a container locking mechanism configured to interact with a corresponding closure locking mechanism for preventing axial movement of the closure  40  when the closure system  10  is in the child resistant mode. 
     As shown in  FIG. 2 , one embodiment of the container locking mechanism includes one or more deflectable locking structures  26  disposed at an interruption of space in the rim  24 . A locking lug  30  extends from a top surface  28  of the locking structure  26  towards the opening edge  20  of the container  12  for releasably engaging a corresponding locking lug of the reversible child resistant closure  40 . For clarification purposes, the locking lug  30  of the container  12  is referred to herein as a locking tab, and the corresponding locking lug of the closure  40  is referred to as a locking projection. In order for the locking tab  30  to releasably engage the corresponding locking projection of the closure  40 , the locking structure  26  is yieldable or deflectable relative to the neck  14 . This deflection of the locking structure  26 , as will be further described below, allows for engagement or disengagement of the locking tab  30  from the locking projection of the closure  40  to allow for either child locking or disengagement of the closure  40  with respect to the container  12 . For ease of manufacturing of a container having the deflectable locking structure  26 , the container  12  is preferably injection molded. However, it should be noted that other types of locking mechanisms may be utilized within the scope of the disclosure including locking mechanisms for blow molded containers. 
     Referring to  FIGS. 3A-3D  and  FIGS. 4A-4D , the one piece closure  40  includes a first section  42  having a first edge  44  and a second section  46  having a second edge  48 . The first section  42  and second section  46  are separated by a solid divider  50  which prevents pharmaceuticals or other materials from exiting the opening  22  of the container  12  whether the one piece closure  40  is used in a child resistant configuration or a non-child resistant configuration. A circumferential side wall  52  extends around the outer circumference of the closure  40  extending from the first edge  44  of the first section  42  to the second edge  48  of the second section  46 . The solid divider  50  and side wall  52  forms a first section cavity  43  extending between the first edge  44  and the divider  50  and a second section cavity  47  extending from the second edge  48  to the divider  50 . As shown, the diameter of the circumferential side wall  52  is preferably substantially the same throughout the height of the closure  40 . 
     The exterior surface  53  of the side wall  52  preferably includes a gripping structure such as a plurality of knurls  55  for assisting a user to grip and rotate the closure  40  relative to the container  12 . The interior surface  54  of the side wall  52  of both the first section  42  and the second section  46  includes respective engaging structures  56 ,  58  operable to interact for rotatable engagement with the complementary engaging structure  18  on the container  12  to secure the closure  40  to the container  12 . Referring to  FIG. 1A , when the closure  40  is applied to the container  12  in the child resistant configuration, engaging structure  58  of the closure  40  interacts with the engaging structure  18  of the container  12 . 
     Referring to  FIG. 1B , when the closure  40  is inverted and applied to the container in the non-child resistant configuration, engaging structure  56  of the closure  40  interacts with the engaging structure  18  of the container  12 . As shown in the Figures, the engaging structures  56  and  58  are preferably solid or segmented threads. However, other suitable engaging structures  56 ,  58  may be used as long as they are operable to interact with the engaging structure  18  of the container  12 . 
     In the embodiment shown in  FIGS. 3A-3D , both of the engaging structures  56  and  58  of the closure  40  includes a segmented thread for interacting with the threaded engaging structure  18  of the container  12 . To assist in manufacturing the closure  40  of this embodiment, the thread segments  56  of the first section  42  are preferably vertically aligned with the thread segments  58  of the second section  46  as shown in the cross-sectional view of  FIG. 6 . Lifter bars are preferably used to make the segmented threads  56 ,  58  in an injection molding process. 
     In an alternate embodiment, as shown in  FIGS. 4A-4D , the engaging structure  56  of the first section  42  is a single continuous thread while the engaging structure  58  of the second section  46  is a segmented thread. In this embodiment, during manufacture, the thread segments  58  of the second section  46  are preferably made using lifter bars, and the lifter bars will pull on the thread segments  58  of the second section to bump the closure  40  off the mold. The thread segments  58  of the second section  46  are preferably between about 0.75 inches to about 1.25 inches long depending on the size of the closure  40 . However, as shown in  FIGS. 3A-3D , smaller thread segments may be used for either the first section  42  or the second section  46 . 
     Referring to  FIGS. 3D and 4D , the second section  46  includes a flange  60  extending radially from the side wall  52  axially downward from the second edge  48 . At least one locking projection  64  extends radially inward from the inner surface  62  of the flange  60 . The locking projection  64  is operable to engage the locking tab  30  of the container  12  for preventing the closure  40  from rotating with respect to the container  12 . When the closure  40  is applied to the container  12  in the child resistant configuration and the locking projection  64  of the closure  40  engages the locking tab  30  of the container  12 , the closure system  10  is in the child resistant mode. In order to remove the closure  40  from the container  12 , a user must deflect the locking structure  26  so that the locking projection  64  disengages the locking tab  30 . For example, the locking structure  26  may be deflected downward by a thumb of the user. 
     In certain embodiments, as shown in  FIG. 2 , the locking tab  30  of container  12  includes a ramp or inclined surface  31  and a locking edge  33 . Referring to  FIG. 5 , the locking projection  64  of closure  40  also includes a ramp or inclined surface  66  and a locking edge  68 . In operation, the closure  40 , when applied to the container  12  in the child resistant configuration, is rotated in a closing direction, preferably clockwise, about the neck  14  of container  12  until the locking projection ramp  66  traverses the locking tab ramp  31 . Referring to  FIG. 7 , to assist the locking projection ramp  66  in traversing the locking tab ramp  31 , the locking structure  26  and corresponding locking tab  30  of the container  12  is deflected downward as the locking projection ramp  66  travels across the locking tab ramp  31 . 
     Referring to  FIG. 8 , showing a cross-sectional view of the closure system  10  in the child resistant mode where the locking projection  64  is engaging the locking tab  30 , the locking edge  33  of the locking tab  30  and the locking edge  68  of the locking projection  64  prevent the closure  40  from rotating in an opening direction, the opening direction preferably being counter-clockwise. In order to allow counter-clockwise rotation of the closure  40  for removing the closure  40  from the container  12 , a user holds down or otherwise deflects the locking structure  26  so that the locking projection  64  may traverse the locking tab  30 . 
     In a non-child resistant operation, the closure  40  is inverted 180 degrees so that it may be applied to the container  12  in the non-child resistant configuration as shown in  FIG. 1B . As the first section  42  of the closure  40  does not include a locking tab or any other type of structure that would engage the locking structure  26  of the container  12 , the closure  40  is operable to freely move in both a clockwise and counter-clockwise direction. 
     Referring to  FIGS. 9-10 , the divider  50  is seen from above when the closure system  10  is in either the child resistant mode ( FIG. 9 ) or the non-child resistant mode ( FIG. 10 ). Indicia, such as company branding, may be molded into one or both sides of the divider  50 . As shown in  FIG. 10 , a warning that closure system  10  is in the non-child resistant mode is preferably molded into the second section side of the divider  50  such that the warning is visible when the closure system  10  is in the non-child resistant mode. 
     As explained above, the divider  50  disposed between the first section  42  and second section  46  forms a first section cavity  43  and a second section cavity  47 . Thus, each cavity is configured to easily receive liners  70  for providing information to the user of the child resistant closure system  10 . The liners  70  are preferably shaped in the form of a disc so that they may be positioned adjacent to and parallel the divider  50  in the first section  42 , the second section  46 , or both the first section  42  and the second section  46  of the closure  40 . To easily secure the liners without glue or other adhesives, the liners preferably include a diameter that is substantially the same as the diameter of the side wall  52 . 
     Referring to  FIGS. 11A-11D , a first liner  72  is inserted into the first section cavity  43  such that the first liner is viewed when the closure system  10  is in the child resistant mode, and a second liner  74  is inserted into the second section cavity  47  such that the second liner  74  is viewed when the closure system  10  is in the non-child resistant mode. Thus, a liner  70  is able to be displayed to a user of the closure system  10  no matter which configuration, child resistant or non-child resistant, the closure  40  is applied to the container  12 . When inserted into a section cavity, the liner would cover up any information that is molded into the respective side of the divider  50 . Alternatively, the use of liners  70  could replace the step of molding or printing information into the actual divider  50 . 
     Printed on each liner  70  may be information that includes, for example, one or more of company branding, messages, advertisements, QR (quick response) codes, and prescription information. Referring to  FIG. 11A , the first liner  72  is shown having promotional information in the form of pharmacy branding as well as operating instructions instructing the user, for example, “TO OPEN PULL TAB DOWN &amp; TURN” and directing the user to turn the cap over for operating in the non-child resistant mode. Referring to  FIG. 11B , another embodiment of the first liner  72  depicts promotional information directing the user to a website for refilling prescriptions as well as the operating instructions shown in  FIG. 11A . 
     Referring to  FIGS. 11C-11D , the second liner  74  is preferably provided with warning indicia, for example, “CAUTION NOT CHILD RESISTANT,” for indicating to the user that the child resistant closure system  10  is currently in the non-child resistant mode. As shown in  FIG. 11D , other information may also be provided in addition to the warning indicia such as pharmacy branding or other promotional materials. 
     Referring to  FIGS. 12A-12D , various non-limiting examples of advertisements or promotional material capable of being displayed on a liner  70  are shown. While the liners  70  shown are first liners  72  to be inserted in the first section cavity  43  as they include operating instructions, the promotional material may also be provided on second liners  74  to be inserted in the second section cavity  47  by replacing the operating instructions with warning indicia. As shown, the liners  70  may include advertisements specifically directed to goods or services that are related to the pharmaceutical in the container, or the advertisement can be specifically directed at items that the user may associate with the pharmaceuticals dispensed in the closure system  10 . For example, advertisements directed at diabetic testing equipment can be positioned on a pharmaceutical container that carries a prescription of diabetic medicine therein. As such the advertisements can be user specific. 
     Alternately, the advertisements can be general to a specific location such as local businesses within a predetermined distance of the pharmacy or the actual pharmacy where the closure system  10  was purchased. Specific items can be advertised, such as specials for a particular business, such as the pharmacy where the closure system  10  was purchased. Additionally, codes, such as QR codes, can be added to the advertising. These codes can be scanned by a user&#39;s smart phone or other code scanner to direct them to pharmacy web pages, coupons, etc. accessible over the Internet. 
     In addition to the promotional material, or in replacement of the promotional material, the liner  70  may also include prescription information directed specifically to the medication provided in the closure system. For example, the liner  70  may include an identification of the pharmaceutical stored in the closure system, dosage information such as “Take One Pill A Day,” and/or auxiliary information such as “Do Not Take With Dairy.” Further, the a variety of liners  70  may be provided in a each in a different color that corresponds to particular dosage instructions for the prescribed pharmaceutical in order to further enhance compliance with a prescription. For example, one liner  70  may include the instructions such as “REMINDER: TAKE 2 PILLS IN THE A.M.,” and this liner would have green characters. Another liner  70  may be provided for a separate prescription that provides “REMINDER: TAKE 2 PILLS IN THE P.M.,” and this liner could have red character to distinguish it from the prescription that is to be taken in the morning. 
     According to an alternate embodiment, the divider  50  is made of a clear plastic or other see-through material and the side wall  52  is preferably made from a substantially opaque material or matte finish. In this embodiment, the closure  40  is preferably formed as a unitary one piece structure using a two stage injection molding process in which the opaque side wall  52  resin is injected separately from the transparent divider  50 . In another embodiment, the difference in transparency between the divider  50  and the side wall  52  is controlled by using only a single stage injection process and varying the surface finish on the mold itself. Thus, the steel of the mold that forms the divider  50  would be highly polished (yielding a clear, see-through portion) while the steel forming the side wall  52  would be left rough (yielding a matte, opaque finish). The opaque side wall  52  prevents visibility of the interface of the engaging sections to inhibit opening by children who might be able to see the interference if the entire cap was transparent. In this embodiment, liner  70  may include warning indicia on one side of the liner  70  with or without additional information on the opposite side. As the divider  50  is see-through or at least partially transparent in this embodiment, one side of the liner  70  is always visible no matter which configuration the closure  40  is applied to the container  12 . Accordingly, the liner  70  may be inserted into either the first section  42  or the second section  46  such that the side of the liner having warning indicia printed thereon is displayed while looking down on the closure  40  when the child resistant closure system  10  is in the non-child resistant mode, and the other side, preferably having the additional information printed thereon, is displayed when the child resistant closure system  10  is in the child resistant mode. 
     In automatic filling applications, the liners  70  are preferably printed digitally with variable data so that the graphics and/or message of the displayed on the liner may be changed rapidly during the printing process. During manufacturing of the closures  40 , the various liners  70  may then be inserted into the caps randomly or in sequence in such a way that boxes of closures  40  are filled having liners  70  having numerous different displays. In this manner, a pharmacy may order a box of closures having, for example, ten different advertising messages specifically tailored to that particular pharmacy by providing ten different advertising messages on the liners  70 . The pharmacist may then choose which closure should be used to fill the prescription based on the message the pharmacist would like to provide to the patient. 
     The liners  70  may also be printed “on demand” by the pharmacist or provided to the pharmacist for selectively applying to a closure when filling a prescription. In embodiments in which the liners are printed at the pharmacy, a pharmacy computer preferably includes a database of various liner graphics and information, the graphics/information being chosen from liners  70  substantially as described above. When filling a prescription, the pharmacist chooses one or more of the designs from the database to be printed on the liners. In preferred embodiments, the liners  70  will be printed on a label sheet also including labels having prescription information that is typically applied to the body  13  of the container  12 . Alternatively, numerous liners  70  containing different graphics and information are pre-printed by the pharmacist or provided to pharmacist by a third party. In either of these manners, the pharmacist can choose from a variety of different liners having various information based on such factors as the patient, the type of prescription, current promotions, etc., and the pharmacist can selectively apply liners  70  to the closure  40  when filling the prescription. 
     In another aspect of the closure system  10 , the divider  50  is disposed between the first section  42  and second section  46  such that the divider  50  forms a close fit around the opening edge  20  and opening  22  of the container  12  whether the reversible child resistant closure system  10  is in the child resistant mode or the non-child resistant mode. Further, no part of the closure  40  traverses or extends into the opening  22  whether the reversible child resistant closure system  10  is in the child resistant mode or the non-child resistant mode. Accordingly, the present disclosure provides a one piece reversible child resistant closure system  10  that may be used in conjunction with an induction sealing system for providing a tamper resistant seal to the closure system  10 . In operation, a tamper resistant liner is inserted into one of the sections  42 ,  46  of the closure  40 . The closure  40  is then applied to the container  12  in the desired configuration, and the closure system  10  is passed through an induction sealing machine for sealing the tamper resistant liner to the opening edge  20  of the container  12 . 
     The foregoing description of preferred embodiments for this disclosure has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure to the precise form disclosed. Obvious modifications or variations are possible in light of the above teachings. The embodiments are chosen and described in an effort to provide the best illustrations of the principles of the disclosure and its practical application, and to thereby enable one of ordinary skill in the art to utilize the disclosure in various embodiments and with various modifications as are suited to the particular use contemplated. All such modifications and variations are within the scope of the disclosure as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally, and equitably entitled.