Container

Claim 2

An eversion resistant, generally cylindrical drawn metal container having therein a product under pressure, said container including a generally cylindrical body having integral side and bottom walls, said bottom wall comprising a central inwardly domed depression surrounded by an annular panel, said depression having a marginal circular intersection with said annular panel, at least said annular panel having been outwardly distended by pressure of said product to permanently change the shape of the bottom wall such that said circular intersection becomes the outermost extent of the bottom wall, said annular panel being inclined into a generally conical shape and forming an obtuse angle with said sidewall, the percentage ratio of the area determined by the radius of said circular intersection to the area determined by the outer radius of said annular panel being in the range of from approximately 15 percent to approximately 60 percent, said circular intersection alone providing a stable base upon which the container rests in an upright position.

Claim 3

The container of claim 1 wherein the nominal outside diameter of the sidewall is 2 11/16 inches, wherein the nominal diameter of the depression is 1.25 inch, and the container is made from 118 pound electrolytically tin plated steel.

Claim 4

The container of claim 1 wherein said depression is concave and remains concave at a pressure of 95 psig.

Claim 5

The container of claim 1 wherein the bottom wall comprises 3004 H-19 aluminum and has a tHickness greater than 0.010 inch and less than 0.017 inch.

Claim 6

The container of claim 1 wherein the bottom wall comprises T-1 temper, tin-electroplated steel and has a thickness greater than 0.010 and less than 0.013 inch.

Claim 7

The container of claim 1 wherein the depression is generally spherical in shape.

Claim 8

An eversion resistant, generally cylindrical container drawn from metal selected from the group consisting of less than 0.013 inch thick steel and less than 0.017 inch thick aluminum alloy capable of withstanding an internal pressure and having therein a product under pressure, said container including a generally cylindrical body having integral side and bottom walls, said bottom wall comprising a central inwardly domed depression surrounded by an annular panel, said depression having a marginal circular intersection with said annular panel, at least said annular panel having been outwardly distended by pressure of said product to permanenlty change the shape of the bottom wall such that said circular intersection becomes the outermost extent of the bottom wall, said annular panel being inclined into a generally conical shape and forming an obtuse angle with said sidewall, the percentage ratio of the area determined by the radius of said circular intersection to the area determined by the outer radius of said annular panel being in the range of from approximately 15 percent to approximately 60 percent, said circular intersection alone providing a stable base upon which the container rests in an upright position.

Claim 9

An eversion resistant, generally cylindrical container drawn from metal selected from the group consisting of less than 0.013 inch thick steel and less than 0.017 inch thick aluminum alloy capable of withstanding an internal pressure and having therein a product under pressure, said container including a generally cylindrical body having integral side and bottom walls, said bottom wall comprising a central inwardly domed depression surrounded by an annular panel, said depression having a marginal circular intersection with said annular panel, at least said annular panel having been outwardly distended by pressure of said product to permanenlty change the shape of the bottom wall such that said circular intersection becomes the outermost extent of the bottom wall, said annular panel being inclined into a generally conical shape and forming an obtuse angle with said sidewall, the percentage ratio of the area determined by the radius of said circular intersection to the area determined by the outer radius of said annular panel being in the range of from approximately 15 percent to approximately 60 percent, said circular intersection alone providing a stable base upon which the container rests in an upright position.

Claim 10

An eversion resistant, generally cylindrical container drawn from metal selected from the group consisting of less than 0.013 inch thick steel and less than 0.017 inch thick aluminum alloy capable of withstanding an internal pressure of 95 psig and having therein a beverage under pressure, said container including a generally cylindrical body having integral side and bottom walls, said bottom wall comprising a central inwardly domed depression surrounded by an annular panel, said depression having a marginal circular intersection with said annular panel, at least said annular panel having been outwardly distinded by pressure of said beverage to permanently change the shape of the bottom wall such that said circular intersection becomes the outermost extent of the bottom wall, said annular panel being inclined into a generally conical shape and forming an obtuse angle with said sidewall, the percentage ratio of the area determined by the radius of said circular intersection to the area determined by the outer radius of said annular panel being in the range of from approximately 15 percent to approximately 60 percent, said circular intersection alone providing a stable base upon which the container rests in an upright position.

Claim 11

An eversion resistant, generally cylindrical container drawn from metal selected from the group consisting of less than 0.013 inch thick steel and less than 0.017 inch thick aluminum alloy capable of withstanding an internal pressure of 95 psig and having therein a beverage under pressure, said container including a generally cylindrical body having integral side and bottom walls, said bottom wall comprising a central inwardly domed depression surrounded by an annular panel, said depression having a marginal circular intersection with said annular panel, at least said annular panel having been outwardly distinded by pressure of said beverage to permanently change the shape of the bottom wall such that said circular intersection becomes the outermost extent of the bottom wall, said annular panel being inclined into a generally conical shape and forming an obtuse angle with said sidewall, the percentage ratio of the area determined by the radius of said circular intersection to the area determined by the outer radius of said annular panel being in the range of from approximately 15 percent to approximately 60 percent, said circular intersection alone providing a stable base upon which the container rests in an upright position.

Claim 12

The container body of claim 8 wherein the percentage ratio of areas is about 50 percent.

Claim 13

The container body of claim 8 wherein the percentage ratio of areas is about 40 percent.

Claim 14

The container body of claim 8 wherein the percentage ratio of areas is about 35 percent.

Claim 15

The container body of claim 8 wherein the percentage ratio of areas is about 30 percent.

Claim 16

The container body of claim 8 wherein the percentage ratio of areas is about 25 percent.

Claim 17

The container of claim 8 wherein the nominal outside diameter of the sidewall is 2 10/16 inches and wherein the nominal diameter of the depression is in the range of from about 1 inch to about 1.5 inches.

Claim 18

The container of claim 8 wherein the nominal outside diameter of the sidewall is 2 10/16 inches and the area ratio is about 40 percent.

Claim 19

The container of claim 8 wherein the body is a drawn and ironed container body.

Claim 20

The container of claim 2 wherein said body comprises tin-electroplated steel.

Claim 21

The container of claim 17 wherein said steel is 103 pound plate befOre being drawn and ironed.

Claim 22

The container of claim 16 wherein said body comprises aluminum.

Claim 23

The container of claim 19 wherein said aluminum is 0.014 inch in thickness before being drawn and ironed.

Claim 24

An eversion resistant bottom wall construction for a substantially rigid drawn metallic cylindrically shaped pressurized beverage container subjected to internal pressure and having integral side and bottom walls of thin metal, said bottom wall comprising: an annular panel integrally connected to the side wall of said container; an inwardly extending depression centrally disposed in said panel, said depression merging peripherally with said panel in a circular base edge, the supplement of the angle formed therebetween being no less than 43*; the projected area of said depression constituting no less than 15 percent and no more than 60% of the total projected area of said bottom wall; at least said annular panel having been outwardly distended by pressure of said beverage to permanently change the shape of the bottom wall such that said circular base edge becomes the outermost extent of the bottom wall, said depression remaining inwardly extending from said annular panel, said circular base edge alone providing a stable support for said container.

Claim 25

An eversion resistant bottom wall construction for a substantially rigid drawn metallic cylindrically shaped pressurized beverage container subjected to internal pressure and having integral side and bottom walls of thin metal, said bottom wall comprising: an annular panel integrally connected to the side wall of said container; an inwardly extending depression centrally disposed in said panel, said depression merging peripherally with said panel in a circular base edge, the supplement of the angle formed therebetween being no less than 43*; the projected area of said depression constituting no less than 15 percent and no more than 60% of the total projected area of said bottom wall; at least said annular panel having been outwardly distended by pressure of said beverage to permanently change the shape of the bottom wall such that said circular base edge becomes the outermost extent of the bottom wall, said depression remaining inwardly extending from said annular panel, said circular base edge alone providing a stable support for said container.

Claim 26

An eversion resistant bottom wall construction for a substantially rigid cylindrically shaped beverage container subjected to internal pressure, said bottom wall being of metal selected from the group consisting of less than 0.013 inch thick steel and less than 0.017 inch thick aluminum alloy, said bottom wall comprising: an annular panel integrally connected to the side wall of said container; an inwardly extending depression centrally disposed in said panel, said depression merging peripherally with said panel in a circular base edge; the projected area of said depression constituting no less than 15 percent and no more than 60 percent of the total projected area of said bottom wall; at least said annular panel having been outwardly distended by pressure of said beverage to permanently change the shape of the bottom wall such that said circular base edge becomes the outermost extent of the bottom wall, said depression remaining inwardly extending from said annular panel, said circular base edge alone providing a stable support for said container.

Claim 27

An eversion resistant bottom wall construction for a substantially rigid cylindrically shaped beverage container subjected to internal pressure, said bottom wall being of metal selected from the group consisting of less than 0.013 inch thick steel and less than 0.017 inch thick aluminum alloy, said bottom wall comprising: an annular panel integrally connected to the side wall of said container; an inwardly extending depression centrally disposed in said panel, said depression merging peripherally with said panel in a circular base edge; the projected area of said depression constituting no less than 15 percent and no more than 60 percent of the total projected area of said bottom wall; at least said annular panel having been outwardly distended by pressure of said beverage to permanently change the shape of the bottom wall such that said circular base edge becomes the outermost extent of the bottom wall, said depression remaining inwardly extending from said annular panel, said circular base edge alone providing a stable support for said container.

Claim 28

The eversion resistant bottom wall construction for a cylindrically shaped container as defined in claim 22 wherein the supplement of the angle formed by the peripheral merging of said depression with said annular flat panel is no less than 43* and no greater than 90*.

Claim 29

An eversion resistant, generally cylindrical metal container having therein a product under pressure, said container including a body drawn and ironed from relatively thin metal sheet selected from the group consisting of less than 0.013 inch thick steel and less than 0.017 inch thick aluminum alloy, said body having a generally cylindrical sidewall having a transition edge, said transition edge being integral with a bottom wall, said bottom wall comprising a central inwardly concave dome surrounded by an annular panel extending to said transition edge, said dome having a marginal circular intersection with said panel, at least said annular panel having been outwardly distended by pressure of said product to permanently change the shape of the bottom wall such that said circular intersection becomes the outermost extent of the bottom wall said intersection being in the form of a radius between said dome and said panel, said intersection alone providing a stable base upon which the container rests in an upright position, the percentage ratio of the area of the circle encompassed by said intersection to the area of the circle encompassed by the transition edge is in the range of from about 15 percent to about 60 percent.

Claim 30

An eversion resistant, generally cylindrical metal container having therein a product under pressure, said container including a body drawn and ironed from relatively thin metal sheet selected from the group consisting of less than 0.013 inch thick steel and less than 0.017 inch thick aluminum alloy, said body having a generally cylindrical sidewall having a transition edge, said transition edge being integral with a bottom wall, said bottom wall comprising a central inwardly concave dome surrounded by an annular panel extending to said transition edge, said dome having a marginal circular intersection with said panel, at least said annular panel having been outwardly distended by pressure of said product to permanently change the shape of the bottom wall such that said circular intersection becomes the outermost extent of the bottom wall said intersection being in the form of a radius between said dome and said panel, said intersection alone providing a stable base upon which the container rests in an upright position, the percentage ratio of the area of the circle encompassed by said intersection to the area of the circle encompassed by the transition edge is in the range of from about 15 percent to about 60 percent.

Claim 31

The container of claim 24 wherein the transition edge is an inwardly bevelled section of the sidewall.

Claim 32

The container of claim 24 wherein the transition edge is a radius.

Claim 33

An eversion resistant bottom wall construction for a substantially rigid drawn metallic cylindrically shaped container having therein a beverage under pressure and having integral side and bottom walls of thin metal, said bottom wall comprising: an annular panel integrally connected to the side wall of said container; an inwardly extending depression centrally disposed in said panel, said depression merging peripherally with said panel in an angled annular base edge, the angle formed thereby being no less than about 43*; the projected area of said depression constituting no less than 15 percent and no more than 60 percent of the total projected area of said bottom wall; at least said annular panel having been outwardly distended by pressure of said beverage to permanently change the shape of the bottom wall such that said annular base edge becomes the outermost extent of the bottom wall, said depression remaining inwardly extending from said annular panel, said annular base edge alone providing a stable support for said container.

Claim 34

An eversion resistant bottom wall construction for a substantially rigid drawn metallic cylindrically shaped container having therein a beverage under pressure and having integral side and bottom walls of thin metal, said bottom wall comprising: an annular panel integrally connected to the side wall of said container; an inwardly extending depression centrally disposed in said panel, said depression merging peripherally with said panel in an angled annular base edge, the angle formed thereby being no less than about 43*; the projected area of said depression constituting no less than 15 percent and no more than 60 percent of the total projected area of said bottom wall; at least said annular panel having been outwardly distended by pressure of said beverage to permanently change the shape of the bottom wall such that said annular base edge becomes the outermost extent of the bottom wall, said depression remaining inwardly extending from said annular panel, said annular base edge alone providing a stable support for said container.

Claim 35

An eversion resistant bottom wall construction for a substantially rigid cylindrically shaped container having therein a beverage under pressure and having integral side and bottom walls drawn and ironed from sheet metal selected from the group consisting of less than 0.013 inch steel and less than 0.017 inch aluminum alloy, said bottom wall comprising: an annular panel integrally connected to the side wall of said container; an inwardly extending depression centrally disposed in said panel, said depression merging peripherally with said panel in an angled annular base edge, the angle formed thereby being about 43*; the projected area of said depression constituting no less than 15 percent and no more than 60 percent of the total projected area of said bottom wall; at least said annular panel having been outwardly distended by pressure of said beverage to permanently change the shape of the bottom wall such that said annular base edge becomes the outermost extent of the bottom wall, said depression remaining inwardly extending from said annular panel, said annular base edge alone providing a stable support for said container.

Claim 36

An eversion resistant bottom wall construction for a substantially rigid cylindrically shaped container having therein a beverage under pressure and having integral side and bottom walls drawn and ironed from sheet metal selected from the group consisting of less than 0.013 inch steel and less than 0.017 inch aluminum alloy, said bottom wall comprising: an annular panel integrally connected to the side wall of said container; an inwardly extending depression centrally disposed in said panel, said depression merging peripherally with said panel in an angled annular base edge, the angle formed thereby being about 43*; the projected area of said depression constituting no less than 15 percent and no more than 60 percent of the total projected area of said bottom wall; at least said annular panel having been outwardly distended by pressure of said beverage to permanently change the shape of the bottom wall such that said annular base edge becomes the outermost extent of the bottom wall, said depression remaining inwardly extending from said annular panel, said annular base edge alone providing a stable support for said container.

Claim 37

The construction of claim 28 wherein the bottom wall comprises 3004 H-19 aluminum and has a thickness greater than 0.010 inch and less than 0.017 inch.

Claim 38

The construction of claim 28 wherein the bottom wall comprises T-1 temper, tin-electroplated steel and has a thickness greater than 0.010 inch and less than 0.013 inch.