A container having a tubular body including a side wall, a bottom wall in the form of a spherical dome projecting to the interior of the container, and an upper wall in the form of an annular spherical dome, inferiorly attached to the side wall by an upper double seam. The bottom wall includes at le
A container having a tubular body including a side wall, a bottom wall in the form of a spherical dome projecting to the interior of the container, and an upper wall in the form of an annular spherical dome, inferiorly attached to the side wall by an upper double seam. The bottom wall includes at least one seating region having a predetermined circumferential extension along a plane extending transversely with respect to an axis of the container and being axially spaced inwardly within the side wall of the container, the seating region being configured to be fitted around a respective circumferential extension a upper double seam of an identical and adjacent container inferiorly disposed in a vertical stack, and axially seated on said upper double seam, so as to define a single contact region between two vertically stacked containers.
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1. A container for pressurized fluids, having a tubular body formed in sheet metal and comprising: a cylindrical side wall, having a lower edge and an upper edge which presents a reduced diameter:a bottom wall in the form of a spherical dome projecting to an interior of the container and attached to
1. A container for pressurized fluids, having a tubular body formed in sheet metal and comprising: a cylindrical side wall, having a lower edge and an upper edge which presents a reduced diameter:a bottom wall in the form of a spherical dome projecting to an interior of the container and attached to the lower edge of the side wall by a lower double seam; andan upper wall comprising a first annular wall portion and a spherical dome portion, inferiorly attached to the upper edge of the side wall by an upper double seam and defining a central opening, the container being characterized in that the bottom wall is configured, in a single piece to include at least one seating region having a predetermined circumferential extension disposed according to a plane extending transversely with respect to an axis of the container and being axially spaced inwardly within the side wall of the container in relation to the lower double seam, said seating region being configured to be fitted and axially seated respectively around and on a respective circumferential extension of the upper double seam of an identical and adjacent container inferiorly disposed in a vertical stack, so as to define a single contact region between two vertically stacked containers,the seating region comprising an annular axial stop portion, to be seated onto a container inferiorly disposed in the vertical stack, and a guiding skirt portion pending from the annular axial stop portion and to be fitted, around the upper double seam of the container inferiorly disposed in the vertical stack, the guiding skirt portion, of each seating region, being inferiorly connected to the lower double seam, by a second annular wall portion spaced back in relation to the lower edge of the cylindrical side wall,wherein, the radial width of the second annular wall portion is larger than the diametric reduction of the upper edge of the side wall, in relation to an adjacent upper cylindrical portion of the side wall, so as to maintain the lower double seam of a container radially outwardly spaced from the upper cylindrical portion of the side wall of another container disposed immediately below the second annular wall portion, when the container is in a vertical stack of similar containers, and the seating region, in conjunction with the second annular wall portion, complement a radial extension of the spherical dome of the bottom wall. 2. The container, as set forth in claim 1, characterized in that the annular axial stop portion of the seating region is provided in order to be seated onto the upper double seam of the container inferiorly disposed in the vertical stack. 3. The container, as set forth in claim 2, wherein the bottom wall presents at least three identical seating regions which are equally equi-angularly spaced apart along a circular contour of the container, said seating regions projecting downwardly from the contour of the bottom wall in the form of a spherical dome. 4. The container, as set forth in claim 3, wherein the annular axial stop portion of each seating region is connected to the bottom wall by an arched wall portion superiorly coincident with the bottom wall and inferiorly coincident with the annular axial stop portion. 5. The container, as set forth in claim 4, wherein the guiding skirt portion of the seating region presents a substantial frusto-conical shape, with a smaller inner diameter of the guiding skirt portion being substantially identical to an outer diameter of the upper double seam. 6. The container, as set forth in claim 1, said container arraying a lid in the form of an inverted cylindrical cup, having a side wall whose lower portion is removably tightly fitted around the upper double seam of the container, and a top wall spaced from the upper wall of the container, said container being characterized in that the seating region is fitted around a respective circumferential extension of an upper edge region of a side wall of the lid and axially seated on a respective circumferential extension of a peripheral region of the top wall of the lid of the other container inferiorly disposed in a vertical stack, said seating region defining a single contact region between the two stacked containers. 7. The container, as set forth in claim 6, wherein the seating region comprises: an annular axial stop portion to be axially seated on a respective circumferential extension of a peripheral region of the top wall of the lid of the container inferiorly disposed in the vertical stack of said containers provided with respective lids; anda guiding skirt portion pending from the annular axial stop portion and to be tightly fitted around a respective circumferential extension of an upper edge region of the side wall of the lid of said container immediately below. 8. The container, as set forth in claim 7, wherein the bottom wall presents at least three identical seating regions that are equi-angularly spaced apart along a circular contour of the container, said seating regions projecting downwardly from the contour of the bottom wall in the form of a spherical dome. 9. The container, as set forth in claim 8, wherein the annular axial stop portion of each seating region is connected to the bottom wall by an arched wall portion, superiorly coincident with the bottom wall and inferiorly coincident with the annular axial stop portion, the guiding skirt portion of each seating region being inferiorly connected to cylindrical side wall. 10. The container, as set forth in claim 1, wherein at least one seating region of the bottom wall extends continuously along the entire circular contour of the container and includes an annular axial stop portion, configured to be seated onto the upper double seam of a container inferiorly disposed in a vertical stack, and a guiding skirt portion pending from the annular axial stop portion and configured to be fitted around the upper double seam of said container inferiorly disposed in the stack. 11. The container, as set forth in claim 10, wherein the bottom wall presents a lower peripheral edge which extends radially in a single piece, in the annular axial stop portion. 12. The container, as set forth in claim 11, wherein the guiding skirt portion of the seating region presents a substantial frusto-conical shape, with a smaller inner diameter of the guiding skirt portion being substantially identical to an outer diameter of the upper double seam. 13. The container, as set forth in claim 11 and carrying a lid (40) in the form of an inverted cylindrical cup, having a side wall whose lower portion is removably tightly fitted around the upper double seam of the container, and a top wall spaced from the upper wall of the container covering the latter, the container being characterized in that the annular axial stop portion is axially seated on a peripheral region of the top wall of the lid of a container inferiorly disposed in a vertical stack of said containers provided with respective lids, whereas the guiding skirt portion is tightly fitted around an upper edge region of the side wall of the lid of said container immediately inferiorly disposed in the stack. 14. The container, as set forth in claim 13, wherein the guiding skirt portion of the seating region presents a substantial frusto-conical shape, having a smaller diameter and a larger inner diameter respectively smaller and larger than an outer diameter of the side wall of the lid, in its upper edge region, in which it is connected to the top wall.
Leung Tsoo-Hing (Wei Yit Vacuum Flask Manufactory ; Camel House ; Palm St. Kowloon HKX) Leung Philip (Wei Yit Vacuum Flask Manufactory ; Camel House ; Palm St. Kowloon HKX), Insulated jar with lid.
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