Lid type drum

Claim 2

A container comprising: a main body portion having an upper end and a head portion connected to said upper end of said main body portion; said head portion terminating in an upper free edge which defines an opening in said container; said head portion including a radially outwardly extending peripheral projection having an upper peripheral wall and a lower peripheral wall spaced from one another; said upper peripheral wall of said peripheral projection comprising a substantially flat, continuous annular surface; and a plurality of circumferentially spaced, radially inwardly extending indentations in said peripheral projection; each of said radially inwardly extending indentations terminating beneath said substantially flat annular surface.

Claim 3

A container according to claim 1, wherein said head portion of said container further includes an upper annular section extending between said upper peripheral wall of said peripheral projection and said upper free edge of said head portion; and a radially outwardly extending, annular bead formed around said upper free edge.

Claim 4

A container according to claim 2, wherein said container has a longitudinal axis; and wherein said upper peripheral surface of said peripheral projection lies in a plane which is substantially perpendicular to said longitudinal axis and wherein said upper peripheral surface has a free outer peripheral edge and an inner peripheral edge which is connected to the bottom of said upper annular section.

Claim 5

A container according to claim 1, wherein said head portion of said container further comprises a lower annular section extending between said peripheral projection and said main body portion of said container; said container having a longitudinal axis; and wherein said lower annular section has an outer circumference which is smaller than the circumference of said main body portion and is also smaller than the circumference of said peripheral projection.

Claim 6

A container according to claim 4, wherein said lower annular section has a lower edge, and wherein said main body portion has an upper edge; and wherein said lower edge of said lower annular section is connected to said upper edge of said main body portion by means of an annular connecting portion which extends inwardly from said upper edge of said main body portion to said lower edge of said lower annular section.

Claim 7

A container according to claim 1, wherein said radially inwardly extending indentations are generally arc-shaped.

Claim 8

A plastic container comprising: a substantially cylindrical main body portion having a longitudinal axis, an upper end and a closed bottom end; a head portion having a bottom end integrally connected to said upper end of said main body portion, and a free upper end defining an opening in said container; said head portion having a lower annular section extending substantially parallel to said longitudinal axis of said container and a lower portion integrally connected to the upper portion of said main body portion; said lower annular section having an outer circumference which is smaller than the outer circumference of said main body portion; said head portion further comprising an upper annular section extending substantially parallel to said longitudinal axis of said container and terminating in said upper free edge of said head portion; a generally radially outwardly extending annular bead extending around said upper free edge of said head portion; a radially outwardly extending projection disposed between and integrally connected to said upper annular section and said lower annular section; said radially outwardly extending projection including a substantially flat, continuous upper annular wall and a lower annular wall spaced from said upper annular wall, and a plurality of circumferentially-spaced inwardly extending indentations between said upper and lower annular walls of said radially outwardly extending projection; said radially inwardly extending indentations interrupting said lower annular wall of said radially outwardly extending projection.

Claim 9

A plastic container comprising: a substantially cylindrical main body portion having a longitudinal axis, an upper end and a closed bottom end; a head portion having a bottom end integrally connected to said upper end of said main body portion, and a free upper end defining an opening in said container; said head portion having a lower annular section extending substantially parallel to said longitudinal axis of said container and a lower portion integrally connected to the upper portion of said main body portion; said lower annular section having an outer circumference which is smaller than the outer circumference of said main body portion; said head portion further comprising an upper annular section extending substantially parallel to said longitudinal axis of said container and terminating in said upper free edge of said head portion; a generally radially outwardly extending annular bead extending around said upper free edge of said head portion; a radially outwardly extending projection disposed between and integrally connected to said upper annular section and said lower annular section; said radially outwardly extending projection including a substantially flat, continuous upper annular wall and a lower annular wall spaced from said upper annular wall, and a plurality of circumferentially-spaced inwardly extending indentations between said upper and lower annular walls of said radially outwardly extending projection; said radially inwardly extending indentations interrupting said lower annular wall of said radially outwardly extending projection.