Container with cap-type closure

Claim 2

A cap-type-closure container, comprising: a container body; a container bottom closing one end of said container body; a container cover of sheet metal having a thickness and closing an opposite end of said container body, said container cover being formed with at least one filling opening and, bounding said opening and formed in one piece with said cover, a tube stub having an external screwthread and defining an annular sealing surface surrounding said opening and located on a side of said cover turned away from said container body; and an internally threaded cap threadedly received removably on said tube stub, forming a closure for said opening and having a sealing ring pressed against said surface, said tube stub being compacted upon deforming the tube stub from said cover, thereby imparting a thickness to said tube stub in excess of the thickness of said cover.

Claim 3

The cap-type-closure container defined in claim 1 wherein said tube stub has a free end remote from said cover and formed with an inwardly turned portion forming said annular sealing surface.

Claim 4

The cap-type-closure container defined in claim 1 wherein said tube stub is formed concentrically with at least one bent step adjoining said cover.

Claim 5

The cap-type-closure container defined in claim 2 wherein said tube stub has a foot portion adjoining said cover of a first diameter connected by an annular step with a wall portion of a smaller diameter formed with said external screwthread.

Claim 6

The cap-type-closure container defined in claim 1 wherein said external screwthread is turned, on said tube stub.

Claim 7

The cap-type-closure container defined in claim 1, wherein said external screwthread is cut on said tube stub.

Claim 8

The cap-type-closure container defined in claim 1 wherein said external screwthread is pressed on said tube stub.

Claim 9

The cap-type-closure container defined in claim 1 wherein said external screwthread is rolled on said tube stub.

Claim 10

The cap-type-closure container defined in claim 1 wherein said external screwthread is embossed on said tube stub.

Claim 11

The cap-type-closure container defined in claim 1 wherein said external screwthread is twisted on said tube stub.

Claim 12

A bung-type barrel comprising: a barrel body having an axis and closed at one end; a barrel cover of sheet metal closing an opposite end of said container body and rolled over an upper edge of said body, said barrel cover being formed with at least one filling opening and a bung assembly bounding said opening on said cover and formed with: a foot portion of a first diameter extending axially outwardly from said cover at a right angle and formed in one piece therewith, a annular step portion defining a first sealing portion and extending inwardly at a right angle from said foot portion and formed unitarily therewith, and an end portion of a smaller diameter than said step portion extending axially outwardly from said step portion and being formed in one piece with said foot and step portions, said end portion having a free end formed with an annular flange turned inwardly from said end portion defining a second annular sealing surface and extending generally perpendicular thereto, said first and second sealing portions surrounding said opening, said end portion being provided with an external screwthread formed between said flange and said step portion; and an internally threaded cap received removably on said bung assembly and forming a closure for said opening, said cap being formed with a tubular collar provided with an internal screwthread mating with said outer screwthread of said end portion, a bottom pressed against said second sealing surface of said bung assembly, and an annular sealing ring interposed between said bottom and said second sealing surface.

Claim 13

A bung-type barrel comprising: a barrel body having an axis and closed at one end; a barrel cover of sheet metal closing an opposite end of said container body and rolled over an upper edge of said body, said barrel cover being formed with at least one filling opening and a bung assembly bounding said opening on said cover and formed with: a foot portion of a first diameter extending axially outwardly from said cover at a right angle and formed in one piece therewith, a annular step portion defining a first sealing portion and extending inwardly at a right angle from said foot portion and formed unitarily therewith, and an end portion of a smaller diameter than said step portion extending axially outwardly from said step portion and being formed in one piece with said foot and step portions, said end portion having a free end formed with an annular flange turned inwardly from said end portion defining a second annular sealing surface and extending generally perpendicular thereto, said first and second sealing portions surrounding said opening, said end portion being provided with an external screwthread formed between said flange and said step portion; and an internally threaded cap received removably on said bung assembly and forming a closure for said opening, said cap being formed with a tubular collar provided with an internal screwthread mating with said outer screwthread of said end portion, a bottom pressed against said second sealing surface of said bung assembly, and an annular sealing ring interposed between said bottom and said second sealing surface.