Back to results
US 4,905,858 AGranted
Sheetmetal container with attached end closures
OwnerBernd Budenbenderinventor
Life of this patent
Estimating the term…
Abstract
A container especially a drum, composed of sheetmetal has its end closures formed with cup-shaped depressions which are fitted snugly into the cylindrical ends of the drum body. A weld seam at an intermediate portion of the height of the wall of the depression seals each closure to the drum body, a flange of the wall abuts an end edge of the drum body and each end is additionally reinforced by an inwardly rolled rim on the flange of the closure. The ends of the body are not rolled or bent.
Claims18
A sheetmetal container, comprising:
- a tubular sheetmetal container body having oppositely open ends defined by a single-thickness of the sheet metal;
- and
- respective closure members closing said oppositely open ends, at least one of said members comprising:
- a disk of sheet metal formed with a cup-shaped inwardly extending depressed portion delimited by a generally cylindrical wall adjoining an annular flange, said depressed portion fitting into a respective one of said body, said flange protruding beyond the respective end of the body and abutting being juxtaposed with a free edge defined by the single thickness of said respective end,
- a continuous weld seam sealing said one of said members to said body all around the circumference of said body and being formed between said body and said one of said members at an intermediate location along the height of said wall, and
- a rim formed on said flange with continuously arcuate curve defining an inner edge reaching inwardly toward an outer surface of said body adjacent the respective free edge and inwardly rolled on said flange, said rim being disposed along the exterior of said body and embracing said free edge.
3 more elements
A method of making a sheet metal container, comprising the steps of:
- forming a tubular sheetmetal container body having oppositely open ends defined by a single-thickness of the sheet metal, and respective closure members for closing said ends, said members each comprising a disk of sheet metal formed with a cup-shaped inwardly extending depressed portion delimited by a generally cylindrical wall adjoining an annular flange protruding beyond the respective end of the body;
- fitting each of said tubular members into a respective one of said ends of said body with the respective flange extending over an edge of the respective end defined by said single-thickness so that the respective depressed portion is received in the body and the respective wall lies along an inner surface of the body;
- bracing each of said walls radially against said body and forming a respective continuous weld seam between each of said walls and said body at an intermediate location over the height of the respective wall;
- and
- forming a continuously arcuate curve in said flange defining a rim having an inner edge terminating short of said free edge defined by said thickness by rolling inwardly the respective flange.
2 more elements
Dependencies are inferred from the claim text.