Patent Publication Number: US-11649091-B2

Title: Closure

Description:
PRIORITY CLAIM 
     This application is a continuation of U.S. application Ser. No. 16/865,728, filed May 4, 2020, which is a continuation of U.S. application Ser. No. 15/861,052, filed Jan. 3, 2018, which claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Application No. 62/442,027, filed Jan. 4, 2017, each of which is expressly incorporated by reference herein. 
    
    
     BACKGROUND 
     The present disclosure relates to a closure, and particularly to a removable closure. More particularly, the present disclosure relates to a closure made from plastics materials. 
     SUMMARY 
     According to the present disclosure, a canister includes a closure and a container. The container is formed to include a product-receiving chamber therein. The closure is configured to mount to the container to block access to the product-storage region through an open mouth formed in the container. 
     In illustrative embodiments, the closure includes a lid and a series of gussets positioned annularly around the lid to reinforce the closure when the closure is installed on the container and under pressure. The gussets enable the lid to include a relatively thin top wall minimizing material included in the closure. 
     In illustrative embodiments, the side wall includes an annular band and a series of knurls coupled the annular band and positioned annularly around the lid to provide gripping and to reinforcement to the side wall when the closure is installed on the container and under pressure. The knurls enable the lid to include a relatively thin side wall. 
     In illustrative embodiments, the lid includes a lid retainer for retaining the lid onto the container. The lid retainer includes an internal thread and a series of speed bumps coupled to the internal threads to increase the force required to remove the closure from the container. The speed bumps block the closure from detaching from the container in an unintended manner due to excess pressure in the interior product-storage region not having been vented appropriately. 
     Additional features of the present disclosure will become apparent to those skilled in the art upon consideration of illustrative embodiments exemplifying the best mode of carrying out the disclosure as presently perceived. 
    
    
     
       BRIEF DESCRIPTIONS OF THE DRAWINGS 
       The detailed description particularly refers to the accompanying figures in which: 
         FIG.  1    is an exploded assembly view of a canister in accordance with the present disclosure showing that the canister includes a closure including a lid comprising a thin top wall and a sidewall and a container including a filler neck, external threads coupled to the filler neck, and a body formed to include a product receiving chamber and suggesting that the closure may be coupled to the container to block access to the product-receiving chamber; 
         FIG.  2    is a sectional view taken along line  2 - 2  of  FIG.  1    showing that the closure further includes an annular seal unit coupled to the thin top wall and a series of circumferentially spaced-apart gussets arranged to extend between the thin top wall and the sidewall to reinforce the thin top wall while the closure is under pressure and the lid further includes a lid retainer including internal thread that mate with the external thread of the container and a series of speed bumps coupled to the internal thread to control venting of pressure in the product receiving chamber during opening of the canister; 
         FIG.  3    is a view similar to  FIG.  2    showing the closure coupled the container in an installed position and showing that the annular seal unit includes, from radially closest to a central axis to radially furthest from the central axis, an annular plug coupled to an inner surface of the thin top wall, an upper valve coupled to the thin top wall, and an outer valve coupled to the thin top wall and that the filler neck is received in and engages the annular seal unit to establish a first seal interface and a second seal interface, to block access to the interior product storage region; 
         FIG.  4    is an enlarged partial perspective view of the canister of  FIGS.  1 - 3    showing that the sidewall of the lid further includes an annular band arranged to extend downwardly from the thin top wall and a series of circumferentially spaced-apart knurls coupled to the annular band to provide a grip for a user during removal of the closure from the container; 
         FIG.  5    is a sectional view taken along line  5 - 5  of  FIG.  4    showing one of the series of knurls coupled to the sidewall and the one of the gussets extending between the thin top wall and the sidewall; 
         FIGS.  6  and  6 A  are enlarged views of an upper region of the closure; 
         FIG.  6    is an enlarged view taken from the circled region of  FIG.  5    showing the relative locations of the gussets, knurls, annular plug, upper valve, and outer valve; 
         FIG.  6 A  is an enlarged view taken from the circled region of  FIG.  3    showing the relative locations of the annular plug, upper valve, and outer valve in relation to the container to establish first and second seal interfaces; 
         FIG.  6 B  is an enlarged view similar to  FIG.  6 A  of a second embodiment of a closure in accordance with the present disclosure showing that the closure includes an upper valve that is generally flat; 
         FIG.  7    is a sectional view taken along line  7 - 7  of  FIG.  4    showing the series of circumferentially spaced-apart gussets and the series of circumferentially spaced-apart knurls; 
         FIG.  8    is an enlarged view taken from the circled region of  FIG.  7    showing dimensions of several of the circumferentially spaced-apart gussets; 
         FIG.  9    is a view similar to  FIG.  8    showing dimensions of several of the circumferentially spaced-apart knurls; 
         FIG.  10    is an enlarged partial perspective view of the canister of  FIG.  1    showing the closure in the installed position on the container and suggesting that the closure moves toward the opened position to release pressure from the product receiving chamber in response to rotating in a counter-clockwise direction about the central axis in a series of movements starting at step 0 and moving through subsequent steps 1-4; 
         FIG.  11    is a view similar to  FIG.  10    showing the canister in an opened arrangement in which the closure has been moved to the opened position and separated from the container after completing steps 1-4 in  FIG.  10    and showing the internal thread coupled to the interior surface of the annular band and the series of speed bumps coupled to the interior surface of the annular band and positioned along the internal thread to control venting of pressure in the product receiving chamber during opening of the canister; 
         FIG.  12    is an enlarged flat diagrammatic view of the closure of  FIG.  11    showing the sidewall, internal thread, and the series of speed bumps coupled to the internal thread and sidewall and arranged to control venting of pressure in the product receiving chamber during opening of the canister; and 
         FIG.  13    is a sectional view taken along line  13 - 13  of  FIG.  11    showing a thickness of the sidewall, the internal thread, and a thickness of one of the series of speed bumps. 
     
    
    
     DETAILED DESCRIPTION 
     A canister  10  in accordance with the present disclosure is shown, for example, in  FIGS.  1 - 4   . Canister  10  includes a container  12  and a closure  20  as shown in  FIGS.  1 - 3   . Closure  20  is separated from container  12  to allow access to a product receiving chamber  18  formed in container  12  through an open mouth  22  formed in the container  12 , as shown, for example, in  FIGS.  1  and  2   . Closure  20  is coupled selectively to container  12  to close open mouth  22  and block access to product receiving chamber  18  as shown in  FIGS.  3  and  4   . Closure  20  includes a lid  24  having relatively thin walls which cooperate together to minimize material used during manufacturing while allowing closure  20  to withstand exposure to pressure exerted on canister  10  from pressured fluids stored in product receiving chamber  18 . 
     Container  12  includes, for example, a filler neck  14  and a body  16 , as shown in  FIGS.  1  and  2   . Filler neck  14  cooperates with body  16  to define product receiving chamber  18  therein. Open month  22  is formed in filler neck  14  and arranged to open into product receiving chamber  18  to allow communication with product receiving chamber  18  through open mouth  22 . Closure  20  is configured to mount selectively on filler neck  14  of container  12  to cover open mouth  22  as suggested in  FIG.  2    and shown in  FIG.  3   . Container  12  and closure  20  both share a common central axis  15  in a radially central location to container  12  and closure  20  as shown in  FIGS.  1 ,  2 , and  3   . 
     Filler neck  14  is coupled to body  16  of container  12  and arranged to extend upwardly away from body  16  toward closure  20  as shown in  FIG.  2   . Filler neck  14  further includes an external thread  38  coupled to filler neck  14  to annularly line an outer surface of filler neck  14 . When closure  20  is in the installed position, external thread  38  are located between filler neck  14  and closure  20  as shown in  FIG.  3   . 
     Closure  20  includes lid  24  and a series of gussets  26  that are coupled to the lid  24  as shown in  FIG.  2   . Lid  24  is formed to include a top wall  28  and a sidewall  30  coupled to top wall  28  and arranged to extend downward from top wall  28  toward container  12 . Top wall  28  and sidewall  30  cooperate to define an interior region  58  formed in lid  24  which receives filler neck  14  therein when closure  20  is coupled to container  12 . Gussets  26  are arranged to extend between and interconnect top wall  28  and sidewall  30  as shown in  FIGS.  5  and  6   . 
     Gussets  26  are spaced-apart from one another and arranged to extend around a circumference of top wall  28  and sidewall  30  as suggested in  FIG.  6    and shown in  FIG.  7   . Gussets  26  are configured to reinforce top wall  28  of the lid  24  to minimize a thickness of top wall  28  so that closure  20  withstands pressure formed in product receiving chamber  18  when a pressurized fluid is stored therein and closure  20  is installed on container  12  closing open mouth  22  as suggested in  FIGS.  3  and  4   . 
     In one embodiment, the top wall  28  has a thickness of less than 0.06 inches. In another embodiment, the top wall  28  has a thickness of less than 0.05 inches. In another embodiment, the top wall  28  has a thickness of less than 0.04 inches. In another embodiment, the top wall  28  has a thickness of less than 0.03 inches. In another embodiment, the top wall  28  has a thickness D tw  equal to 0.03 inches as shown in  FIG.  8   . 
     Each gusset  26  is formed to include a straight portion  62  and a curved portion  64  and shown in  FIG.  6   . Curved portion  64  is arranged to couple gusset  26  to closure  20 . Straight portion  62  is arranged to extend between top wall  28  and sidewall  30  at an angle and face toward interior region  58 . Straight portion  62  has a rectangular shape as shown in  FIG.  6   , however, any suitable shape may be used. Each gusset extends from top wall  28  down sidewall  30  a length D g1  of about 0.062 inches as shown in  FIG.  6   , however, any other suitable length may be used. In one example, each gusset  26  has a width D g2  of about 0.025 inches as shown in  FIG.  8   , however, any suitable width may be used. As such, each gusset  26  includes a width to height ratio of about 2 to about 5. However, any suitable width to height ratio may be used. 
     In one example, each gusset  26  is spaced apart circumferentially from neighboring gussets  26  by an angle α of about 8 degrees around central axis  15  as shown in  FIGS.  7  and  8   . In another example, each gusset  26  is spaced apart circumferentially from neighboring gussets  26  by an angle α of about 6 degrees to about 12 degrees around central axis  15 . In yet another example, the closure  20  may include groups of gussets  26  spaced circumferentially around the central axis  15  such that a gap is provided between adjacent groups of gussets  26 . However, any suitable spacing between gussets  26  or groups of gussets  26  may be used. In one example, each straight portion  62  is extends from top wall  28  to sidewall  30  at an angle of about 18.7 degrees from sidewall  30 , however any suitable angle may be used. Gusset  26  spacing, length, and width all cooperate to provide reinforcing to top wall  28  to provide minimum top wall  28  thickness while the closure  20  is mounted on container  12 . 
     Closure  20  further includes an annular seal unit  40  as shown in  FIGS.  5  and  6 A . Annular seal unit  40  is coupled to top wall  28  of lid  24  as shown in  FIGS.  5  and  6   . Annular seal unit  40  is positioned to lie in spaced apart relation to annular sidewall  30  and configured to receive a portion of filler neck  14  therein when closure  20  is coupled to container  12  as shown in  FIG.  6 A . 
     Annular seal unit  40  includes an annular plug  42 , an outer valve  44 , and an upper valve  46  as shown in  FIGS.  6  and  6 A . Outer valve  44  is located in spaced-apart relation to annular plug  42 . Upper valve  46  is located between annular plug  42  and outer valve  44  as shown in  FIG.  6   . Series of gussets  26  are located between outer valve  44  and sidewall  30  as shown in  FIG.  6   . Annular seal unit  40  is formed to include an annular receiving channel  60  therein. Annular receiving channel  60  is defined in part by top wall  28 , annular plug  42 , outer valve  44 , and upper valve  46 . Annular seal unit  40  receives filler neck  14  therein to block access to product receiving chamber  18  by establishing a first seal interface  51 , a rotation stop  52  and a second seal interface  53  as shown in  FIG.  6 A . 
     First seal interface  51  is established along the inner surface of filler neck  14  when annular plug  42  extends into open mouth  22  as shown in  FIG.  6 A . Annular plug  42  is formed to include an outer seal surface  54  and an inner surface  56 . Outer seal surface  54  is arranged to face toward and define a portion of annular receiving channel  60 . Outer seal surface  54  also establishes first seal interface  51  when closure  20  has been installed onto container  12  and annular seal unit  40  has received filler neck  14 . 
     Rotation stop  52  is restricts rotation of the closure  20  relative to the container  12  when the upper valve  46  engages the rotation stop  52  as shown in  FIG.  6 A . Upper valve  46  includes an annular disk  70  coupled to top wall  28 , an inner ring  72 , and an outer reinforcement ring  74 . Annular disk  70  is coupled to top wall  28  and annular plug  42  and defines a portion of annular receiving channel  60 . Annular disk  70  cooperates with outer seal surface  54  of annular plug  42  to establish a space within annular receiving channel  60  for annular plug  42  to pivot when closure  20  is installed and uninstalled as shown in  FIG.  6 A . In another embodiment, portions of the upper valve  46  may be removed as shown in  FIG.  6 B . 
     Inner ring  72  has a convex shape and engages filler neck  14  when closure  20  has been installed onto filler neck  14  as shown in  FIG.  6 A . Inner ring  72  is coupled to top wall  28  and annular disk  70  and defines a portion of annular receiving channel  60 . Inner ring  72  is formed between annular disk  70  and outer reinforcement ring  74 . Inner ring  72  is configured to engage filler neck  14  to provide rotation stop  52  as shown in  FIG.  6 A . 
     Outer reinforcement ring  74  has a concave shape and receives filler neck  14  as shown in  FIG.  6 A . Outer reinforcement ring  74  is coupled to top wall  28  between inner ring  72  and outer valve  44 . Outer reinforcement ring  74  is formed with a different thickness relative to top wall  28  and annular disk  70  to minimize stress cracking caused by pressure within product receiving chamber  18 . 
     In one example, annular disk  70  has a thickness that is less than 0.015 inches from top wall  28 . In another example, annular disk  70  has a thickness D v1  that is equal to 0.015 inches from top wall  28 . In one embodiment, inner ring  72  has a thickness that is less than 0.027 inches from top wall  28 . In another embodiment, inner ring  72  has a thickness D v2  equal to 0.027 inches from top wall  28 . In one embodiment, outer reinforcement ring  74  has a thickness that is less than 0.019 inches from top wall  28 . In another embodiment, outer reinforcement ring has a thickness Do equal to 0.019 inches from top wall  28 . 
     Second seal interface  53  is established along the outer surface of filler neck  14  where outer valve  44  contacts filler neck  14  as shown in  FIG.  6 A . Outer valve  44  is formed to include inner seal surface  80 , angled valve surface  82  and outer surface  84  as shown in  FIG.  6   . Inner seal surface  80  faces and defines a portion of annular receiving channel  60  and is formed to establish second seal interface  53  when closure  20  has been installed onto container  12  and annular seal unit  40  has received filler neck  14 . Outer surface  84  is arranged to face toward sidewall  30  and gussets  26 . Angled valve surface  82  is arranged to face toward annular receiving channel  60  and extends at an angle toward sidewall  30 . 
     Another embodiment of a closure  220  in accordance with the present disclosure is shown in  FIG.  6 B . The closure  220  is similar to closure  20 . As such, similar reference numbers to those used in the description of closure  20  are also used in the description of closure  220 . Closure  220  is identical to closure  20  except that upper valve  246  is generally flat in comparison to upper valve  46  of closure  20 . Rotation stop  252  is provided by the generally flat upper valve  246  when closure  220  is fully installed on the container  12  as shown in  FIG.  6 B . 
     Turning again to the first embodiment of the present disclosure, sidewall  30  of lid  24  includes an annular band  34  and a series of knurls  36  as shown in  FIG.  7   . Annular band  34  is coupled to top wall  28  and arranged to extend downwardly away from top wall  28  toward container  12  to extend around and surround filler neck  14  when closure  20  is installed on container  12  as shown in  FIGS.  3  and  4   . The series of knurls  36  are configured to reinforce annular band  34  to minimize a thickness of annular band  34  so that closure  20  withstands pressure formed in product receiving chamber  18  when the pressurized fluid is stored therein and closure  20  is installed on container  12  closing open mount  22  as suggested in  FIGS.  3  and  4   . 
     In one embodiment, annular band  34  has a thickness that is less than 0.04 inches. In another embodiment, annular band  34  has a thickness that is less than 0.03 inches. In another embodiment, annular band  34  has a thickness that is less than 0.022 inches. In another embodiment, annular band  34  has a thickness Dab that is equal to 0.022 inches as shown in  FIG.  8   . 
     Series of knurls  36  are coupled to an outer surface of annular band  34  and arranged to extend outwardly away from annular band  34  and filler neck  14  as shown in  FIGS.  7 ,  9 , and  10   . Series of knurls  36  are arranged to extend around annular band  34  and are configured to provide a grip for a user applying a torque to closure  20 . The series of knurls  36  are coupled to annular band  34  and arranged to extend downwardly away from top wall  28  toward container  12  as shown in  FIG.  10   . 
     In one example, each knurl has a thickness less than 0.012 inches from the outer surface of the annular band  34 . In another example, each knurl  36  has a thickness D k3  of about 0.012 inches from the outer surface of the annular band  34  as shown in  FIG.  9   . In one example, each knurl  36  is spaced apart circumferentially from neighboring knurl  36  by an angle β of about 6 degrees around central axis  15  as shown in  FIGS.  7  and  9   . 
     Each knurl  36  is formed to include a knurl body  66 , a first knurl shoulder  67  and a second knurl shoulder  68  as shown in  FIG.  9   . Knurl body  66  is formed to extend away from lid  24  and spaced apart from gussets  26  to find annular band  34  therebetween. Knurl body  66  is formed on each side by first and second knurl shoulders  67  and  68 . 
     The disclosure relating to first knurl shoulder  67  is also applicable to second knurl shoulder  68 , and thus, only first knurl shoulder  67  will be discussed in detail. First knurl shoulder  67  includes a first curved segment  67 A, a straight segment  67 B, and second curved segment  67 C. First curved segment  67 A forms part of the end of knurl  36  and is connected to straight segment  67 B. Straight segment  67 B forms one side of knurl  36  and extends from first curved segment  67 A to second curved segment  67 C. Second curved segment  67 C forms part of the bottom of knurl  36  and is interconnected to first curved segment  67 A by straight segment  67 B which extends therebetween. 
     In one example, first curved segment  67 A has a radius of curvature of about 0.007 inches, however, any suitable radius of curvature may be used. The radius of curvature of first curved segment  67 A has a center that is radially closer to central axis  15  than first curved segment  67 A. In one example, first curved segment  67 A has a radius of curvature of about 0.007 inches, however, any suitable radius of curvature may be used. The radius of curvature of second curved segment  67 C has a center that is radially farther from central axis  15  than first curved segment  67 A. 
     In one example, first and second knurl shoulders  67 ,  68  have a width D k2  of 0.01 inches across the outer surface of annular band  34  as shown in  FIG.  9   , however, any suitable length may be used. In one example, knurl body  66  has a width D k1  of 0.016 inches across the outer surface of annular band  34  as shown in  FIG.  9   . 
     Lid  24  of closure  20  further includes a lid retainer  32 . Lid retainer  32  is configured to couple selectively closure  20  onto the container  12 . Lid retainer  32  includes internal thread  47 , a series of valve passageways  48 , and a series of speed bumps  50  as shown in  FIGS.  11  and  12   . Internal thread  47  is coupled to sidewall  30  of lid  24  and is configured to interact with external thread  38  of the filler neck  14  to cause lid  24  to close open mouth  22  when closure  20  is installed. 
     Lid retainer  32  may be disengaged from closure  20  by rotating the lid  24  in a counter-clockwise manner as shown in  FIG.  10    by steps 0-4. Steps 0-4 indicate a venting process for pressure produced in product receiving chamber  18 . When a user begins to rotate closure  20  through steps 0-4, pressure from product receiving chamber  18  is allowed to pass through open mouth  22  and out of canister  10  through valve passageways  48  as shown in  FIG.  11   . 
     Valve passageways  48  are formed in lid  24 , as shown in  FIG.  11   , and are arranged to extend downwardly along sidewall  30  to provide a conduit through internal thread  47  to allow excess pressure to escape before closure  20  has been uninstalled from filler neck  14 . Angled valve surface  82  is in communication with valve passageways  48  and is configured to allow pressurized fluid to flow around the outer valve  44  and through valve passageways  48  to provide controlled venting before the closure  20  has been completely uninstalled from container  12 . 
     As shown in  FIG.  12   , internal thread  47  includes thread sections  47 A,  47 B,  47 C,  47 D,  47 E,  47 F,  47 G,  47 H,  47 I,  47 J,  47 K,  47 L,  47 M,  47 N,  47 O, and  47 P. Valve passageways  48 A,  48 B,  48 C,  48 D,  48 E,  48 F, and  48 G form gaps along internal thread  47  to define each thread section. First thread section  47 A includes a tapered thread start  49  appended on one end of first thread section  47 A. Tapered thread start  49  is configured to align internal thread  47  with external thread  38  so that a user can install closure  20 . Speed bumps  50  are positioned along internal thread  47  and configured to engage external thread  38  to increase the force required to uninstall closure  20  from filler neck  14  and block closure  20  from detaching in an uncontrolled manner from filler neck  14 . 
     Four speed bumps  50 A,  50 B,  50 C, and  50 D are positioned along internal thread  47  as shown in  FIG.  12   . Each speed bump  50  extends from sidewall  30  into interior region  58  as shown in  FIGS.  11  and  13   . First speed bump  50 A is coupled between first and ninth thread sections  47 A and  47 I and defines a portion of valve passageway  48 A, as shown in  FIG.  12   . First and ninth thread sections  47 A and  47 I are positioned between tampered thread start  49  and valve passageway  48 A. First thread section  47 A is positioned below ninth thread section  47 I. Valve passageway  48 A is positioned between speed bump  50 A and second and tenth thread sections  47 B and  47 J. Second and tenth thread sections  47 B and  47 J are positioned between valve passageways  48 A and  48 B. Second thread section  47 B is positioned below tenth thread section  47 J. 
     Second speed bump  50 B is coupled between third and eleventh thread sections  47 C and  47 K and defines a portion of valve passageway  48 C, as shown in  FIG.  12   . Third and eleventh thread sections  47 C and  47 K are positioned between valve passageways  48 B and  48 C. Third thread section  47 C is positioned below eleventh thread section  47 K. Valve passageway  48 C is positioned between speed bump  50 B and fourth and twelfth thread sections  47 D and  47 L. Fourth and twelfth thread sections  47 D and  47 L are positioned between valve passageways  48 C and  48 D. Fourth thread section  47 D is positioned below twelfth thread section  47 L. Speed bump  50 B lies farther from container  12  than speed bump  50 A. 
     Third speed bump  50 C is coupled to a base portion of fifth thread section  47 E and extends from fifth thread section  47 E toward container  12  as shown in  FIG.  12   . Speed bump  50 C defines a portion of valve passageway  48 E. Fifth and thirteenth thread sections  47 E and  47 M are positioned between valve passageways  48 D and  48 E. Fifth thread section  47 E is positioned below thirteenth thread section  47 M. Valve passageway  48 E is positioned between speed bump  50 C and sixth and fourteenth thread sections  47 F and  47 N. Sixth and fourteenth thread sections  47 F and  47 N are positioned between valve passageways  48 E and  48 F. Sixth thread section  47 F is positioned below fourteenth thread section  47 N. Speed bump  50 C lies closer to container  12  than speed bump  50 A and speed bump  50 B. 
     Forth speed bump  50 D is coupled to a base portion of seventh thread section  47 G and extends from seventh thread section  47 G toward container  12  as shown in  FIG.  12   . Seventh and fifteenth thread sections  47 G and  47 O are positioned between valve passageways  48 F and  48 G. Seventh thread section  47 G is positioned below fifteenth thread section  47 O. Valve passageway  48 G is positioned between speed bump  50 D and eighth and sixteenth thread sections  47 H and  47 P. Eighth and sixteenth thread sections  47 H and  47 P are positioned between valve passageway  48 G and thread sections  47 A and  47 I. Speed bump  50 D lies farther from container  12  than speed bump  50 C. Eighth thread section  47 H is positioned below sixteenth thread section  47 P. Speed bump  50 D lies closer to container  12  than speed bump  50 A and speed bump  50 B. 
     In one example, speed bumps  50 C and  50 D have a thickness of less than 0.01 inches. In another example, speed bumps  50 C and  50 D have a thickness equal to 0.01 inches. In another example, speed bumps  50 C and  50 D have a thickness D sb  equal to 0.009 inches as shown in  FIG.  13   , however, any suitable speed bump thickness may be used. In one example, speed bumps  50 A and  50 B have a thickness of less than 0.005 inches. In another example, speed bumps  50 A and  50 B have a thickness of 0.004 inches. In one example, the thickness is measured from annular band  34  to a radially inner edge of the selected speed bump  50  as shown in  FIG.  13   . In another example, the thickness is measured from a point along internal thread  47  to a radially inner edge of the selected speed bump  50 . 
     Gussets are spaced-apart from one another and arranged to extend around a circumference of top wall and sidewall as suggested in  FIG.  6    and shown in  FIG.  7   . Gussets are cooperate together to provide means for reinforcing top wall of the lid to minimize a thickness of top wall so that closure withstands pressure formed in product receiving chamber when a pressurized fluid is stored therein and closure is installed on container closing open mouth as suggested in  FIGS.  3  and  4   . 
     Sidewall of lid includes an annular band and a series of knurls as shown in  FIG.  7   . Annular band is coupled to top wall and gussets and arranged to extend downwardly away from top wall toward container to extend around and surround filler neck when closure is installed on container as shown in  FIGS.  3  and  4   . The series of knurls cooperate together to provide means for reinforcing annular band to minimize a thickness of annular band so that closure withstands pressure formed in product receiving chamber when the pressurized fluid is stored therein and closure is installed on container closing open mount as suggested in  FIGS.  3  and  4   .