Container construction

Claim 2

A container, comprising a barrel of synthetic plastic material including a substantially cylindrical main body portion having a longitudinal axis, and a head portion at one axial end and of one piece with said main body portion, said head portion comprising a circumferential wall including a first annular section substantially parallel with said axis, a second annular section inclined inwardly towards said axis at a greater angle and a third annular section projecting axially from said second section and inclined inwardly towards said axis at a lesser angle, said third section having an outer free edge provided with a radially outwardly projecting circumferential bead and an inner free edge bounding an opening communicating with the interior of said barrel; a cover of synthetic plastic material overlying said head portion and comprising a one-piece annular rim including an outer annular rim portion exteriorly surrounding said head portion and having a circumferential rib abutting said second and third sections and engaging beneath said bead, an inner annular rim portion projecting into said opening proximal to said inner free edge, and a transverse portion of one piece with said inner annular rim portion and spanning said opening; a sealing element sealingly confined intermediate and in abutment with said second annular section, said outer rim portion and said rib; and at least one strap element encircling said outer rim portion and tightly urging the same into contact with said first annular section.

Claim 3

A container as defined in claim 1, wherein said rim is substantially rigid and said transverse portion is elastically yieldable; and further comprising an annular fold portion connecting said transverse portion with said inner annular rim portion along a flexible annular zone.

Claim 4

A container as defined in claim 1, said outer annular rim portion being composed of a plurality of circumferentially discontinuous rim segments.

Claim 5

A container as defined in claim 1, wherein said sealing element is a sealing ring.

Claim 6

A container as defined in claim 2, said first annular section defining a circumferentially extending recess radially inwardly towards said axis, and said outer annular rim portion comprising an annular rim wall portion provided with a radially inwardly projecting inner annular step received in said recess anD a corresponding outer annular depression; and wherein said strap element is located in said depression.

Claim 7

A container as defined in claim 5, and further comprising a plurality of circumferentially distributed loop portions spanning said annular depression axially thereof for retaining said strap element therein.

Claim 8

A container as defined in claim 6, said annular rim wall portion being composed of a plurality of circumferentially spaced wall segments; and wherein said loop portions are each located between two circumferentially successive ones of said wall segments.

Claim 9

A container as defined in claim 7, each of said wall segments having a free end portion facing towards said main body portion and extending radially outwardly from said axis; and wherein said loop portions each have a connected end fast with said outer annular rim portion and a free end located intermediate and radially inwardly of said free end portions of the respectively adjacent wall segments.

Claim 10

A container as defined in claim 5, said outer annular depression having in direction of said axis a length which is greater than the width of said strap element in said direction; and retaining means retaining said strap element substantially midway in said depression.

Claim 11

A container as defined in claim 9, said retaining means comprising projections in said depression at opposite axial ends thereof and having outer edges converging in direction radially inwardly as well as axially of said depression, said projections defining substantially midway of said depression a channel in which said strap element is confined.

Claim 12

A container, comprising: a synthetic plastic barrel comprising: a substantially cylindrical main body portion having a longitudinal axis, and a head portion integrally connected to one end of said main body portion; said head portion comprising a circumferential wall including a first annular section substantially parallel with said longitudinal axis, a second annular section inclined inwardly towards said longitudinal axis and a third annular section projecting generally axially from said second section; said third section having an outer free edge provided with a radially outwardly projecting circumferential bead and an inner free edge bounding an opening communicating with the interior of said barrel; a cover of synthetic plastic material overlying said head portion of said barrel and comprising an integral annular rim including an annular outer rim portion exteriorly surrounding said head portion of said barrel and having a circumferential rib abutting said circumferential bead on said outer free edge of said third annular section of said barrel; said integral rim further comprising an annular inner rim portion projecting into said opening proximal to said inner free edge of said third annular section of said barrel, and a transverse portion integral with said annular inner rim portion and spanning said opening of said barrel; a sealing element sealingly confined intermediate and in abutment with said head portion of said barrel and said outer rim portion of said cover; and a strap element encircling said annular outer rim portion of said cover tightly urging the same into contact with said first annular section of said barrel.

Claim 13

A container, comprising: a synthetic plastic barrel comprising: a substantially cylindrical main body portion having a longitudinal axis, and a head portion integrally connected to one end of said main body portion; said head portion comprising a circumferential wall including a first annular section substantially parallel with said longitudinal axis, a second annular section inclined inwardly towards said longitudinal axis and a third annular section projecting generally axially from said second section; said third section having an outer free edge provided with a radially outwardly projecting circumferential bead and an inner free edge bounding an opening communicating with the interior of said barrel; a cover of synthetic plastic material overlying said head portion of said barrel and comprising an integral annular rim including an annular outer rim portion exteriorly surrounding said head portion of said barrel and having a circumferential rib abutting said circumferential bead on said outer free edge of said third annular section of said barrel; said integral rim further comprising an annular inner rim portion projecting into said opening proximal to said inner free edge of said third annular section of said barrel, and a transverse portion integral with said annular inner rim portion and spanning said opening of said barrel; a sealing element sealingly confined intermediate and in abutment with said head portion of said barrel and said outer rim portion of said cover; and a strap element encircling said annular outer rim portion of said cover tightly urging the same into contact with said first annular section of said barrel.

Claim 14

A container as defined in claim 11, wherein said rim is substantially rigid and said transverse portion is elastically yieldable; and further comprising an annular fold portion connecting said transverse portion with said inner rim portion along a flexible annular zone.

Claim 15

A container as defined in claim 11, said annular outer rim portion comprising a plurality of circumferentially discontinuous rim segments.

Claim 16

A container as defined in claim 11, wherein said sealing element is a sealing ring.

Claim 17

A container as defined in claim 12, wherein said first annular section of said barrel has a diameter smaller than the diameter of said main bOdy portion and smaller than the diameter of said second annular section to thereby define a circumferential recess extending radially inwardly towards said axis; and wherein said outer annular rim portion of said cover comprises a radially inwardly recessed wall portion which is received in said circumferential recess in said first annular section; and wherein said strap element is located in said recessed wall portion of said cover.

Claim 18

A container as defined in claim 15, and further comprising a plurality of circumferentially-spaced loop portions spanning said recessed wall portion of said cover, axially thereof, for retaining said strap element therein.

Claim 19

A container as defined in claim 16, said outer annular rim portion including a plurality of circumferentially-spaced wall segments; and wherein each of said loop portions is located between two circumferentially successive ones of said wall segments.

Claim 20

A container as defined in claim 17, each of said wall segments having a free end portion extending radially outwardly from said axis; and wherein each of said loop portions have a connected end connected to said outer annular rim portion and a free end located intermediate and radially inwardly of the free end portions of the respectively adjacent wall segments.

Claim 21

A container as defined in claim 15, said radially inwardly recessed wall portion of said cover having, in an axial direction, a length which is greater than the width of said strap element in said direction; and retaining means retaining said strap element substantially midway in said recessed wall portion.

Claim 22

A container as defined in claim 19, said retaining means comprising projections in said recessed wall portion at opposite axial ends thereof and having outer edges converging in a radially inward direction and also converging in an axial direction; said projections defining, substantially midway of said recessed wall portion, a channel in which said strap element is confined.

Claim 23

A container, comprising: a synthetic plastic barrel comprising: a substantially cylindrical main body portion having a longitudinal axis, and a head portion integrally connected to one end of said main body portion; said head portion comprising a circumferential wall including a first annular section substantially parallel with said longitudinal axis, a second annular section inclined inwardly towards said longitudinal axis and a third annular section projecting generally axially from said second section; said third section having an outer free edge provided with a radially outwardly projecting circumferential bead and an inner free edge bounding an opening communicating with the interior of said barrel; said first annular section having a diameter smaller than the diameter of said main body portion and smaller than the diameter of said second section to thereby define a circumferential recess extending radially inwardly towards said longitudinal axis; a synthetic plastic cover overlying said head portion and comprising a substantially rigid, integral annular rim including an outer annular rim portion exteriorly surrounding said head portion of said barrel and having a circumferential rib abutting said circumferential bead on said outer free edge of said third annular section; said outer annular rim portion comprising a plurality of circumferentially-spaced wall segments, each of said wall segments having a free end portion extending radially outwardly relative to said longitudinal axis; said integral annular rim further comprising an inner annular rim portion projecting into said opening proximal to said inner free edge of said third annular section of said barrel; said cover further including an elastically yieldable transverse portion integral with said inner annular rim portion and spanning said opening; said outer annular rim portion of said cover including a radially inwardly recessed wall porTion which is received in said circumferential recess in said first annular section of said barrel; a strap element disposed in said radially inwardly recessed wall portion of said cover and tightly urging said wall portion in contact with said first annular section of said head portion of said barrel; a plurality of circumferentially-spaced loop members substantially spanning said recessed wall portion of said cover in an axial direction for retaining said strap element therein; each of said loop members including a connected end connected to said outer annular rim portion and a free end; and a sealing element sealingly confined intermediate and in abutment with said head portion of said barrel and said outer rim portion of said cover.

Claim 24

A container, comprising: a synthetic plastic barrel comprising: a substantially cylindrical main body portion having a longitudinal axis, and a head portion integrally connected to one end of said main body portion; said head portion comprising a circumferential wall including a first annular section substantially parallel with said longitudinal axis, a second annular section inclined inwardly towards said longitudinal axis and a third annular section projecting generally axially from said second section; said third section having an outer free edge provided with a radially outwardly projecting circumferential bead and an inner free edge bounding an opening communicating with the interior of said barrel; said first annular section having a diameter smaller than the diameter of said main body portion and smaller than the diameter of said second section to thereby define a circumferential recess extending radially inwardly towards said longitudinal axis; a synthetic plastic cover overlying said head portion and comprising a substantially rigid, integral annular rim including an outer annular rim portion exteriorly surrounding said head portion of said barrel and having a circumferential rib abutting said circumferential bead on said outer free edge of said third annular section; said outer annular rim portion comprising a plurality of circumferentially-spaced wall segments, each of said wall segments having a free end portion extending radially outwardly relative to said longitudinal axis; said integral annular rim further comprising an inner annular rim portion projecting into said opening proximal to said inner free edge of said third annular section of said barrel; said cover further including an elastically yieldable transverse portion integral with said inner annular rim portion and spanning said opening; said outer annular rim portion of said cover including a radially inwardly recessed wall porTion which is received in said circumferential recess in said first annular section of said barrel; a strap element disposed in said radially inwardly recessed wall portion of said cover and tightly urging said wall portion in contact with said first annular section of said head portion of said barrel; a plurality of circumferentially-spaced loop members substantially spanning said recessed wall portion of said cover in an axial direction for retaining said strap element therein; each of said loop members including a connected end connected to said outer annular rim portion and a free end; and a sealing element sealingly confined intermediate and in abutment with said head portion of said barrel and said outer rim portion of said cover.

Claim 25

A container as defined in claim 21, and further comprising an annular fold portion connecting said transverse portion of said cover with said annular inner rim portion of said cover along a flexible annular zone.

Claim 26

A plastic container having an opening and having a plastic closure for closing the opening, the container having a body portion and a portion leading to the opening which has the following external surface configurations, in succession, going from the body portion to the opening: a first neck whose outer surface is substantially parallel to the axis of the opening; a radially outwardly extending portion whose surface adjacent the first neck extends at approximately a right angle to the axis of the opening and which terminates in an inwardly-extending surface; a second neck; and a bead projecting outwardly beyond the adjacent portion of the second neck; the closure having a relatively flexible center portion surrounded by a relatively rigid edge and skirt portion, the edge and skirt portion including the following parts, going from the container body portion towards the container opening when the closure is in position closing the container opening; securing members around the edge portion of the closure, divided from one another, the securing members being relatively rigid and having an internal configuration which conforms with the container first neck and the adjacent surface of said container projection; the securing members being arranged to be secured to the first neck by means of a clamping member passing around the exterior of the securing members, in order to secure the closure on the container; a skirt portion to which the securing members are attached; a relatively rigid projection on the inside of the closure and having an internal configuration which conforms with the container second neck and engages behind the container bead when the closure is in position closing the container opening; and a sealing ring retained between said closure projection and the internal surface of the closure skirt portion so as to be pressed against the inwardly-extending surface of said radially outwardly extending portion of the container when the clamping member clamps the securing members.

Claim 27

A plastic container having an opening and having a plastic closure for closing the opening, the container having a body portion and a portion leading to the opening which has the following external surface configurations, in succession, going from the body portion to the opening: a first neck whose outer surface is substantially parallel to the axis of the opening; a radially outwardly extending portion whose surface adjacent the first neck extends at approximately a right angle to the axis of the opening and which terminates in an inwardly-extending surface; a second neck; and a bead projecting outwardly beyond the adjacent portion of the second neck; the closure having a relatively flexible center portion surrounded by a relatively rigid edge and skirt portion, the edge and skirt portion including the following parts, going from the container body portion towards the container opening when the closure is in position closing the container opening; securing members around the edge portion of the closure, divided from one another, the securing members being relatively rigid and having an internal configuration which conforms with the container first neck and the adjacent surface of said container projection; the securing members being arranged to be secured to the first neck by means of a clamping member passing around the exterior of the securing members, in order to secure the closure on the container; a skirt portion to which the securing members are attached; a relatively rigid projection on the inside of the closure and having an internal configuration which conforms with the container second neck and engages behind the container bead when the closure is in position closing the container opening; and a sealing ring retained between said closure projection and the internal surface of the closure skirt portion so as to be pressed against the inwardly-extending surface of said radially outwardly extending portion of the container when the clamping member clamps the securing members.

Claim 28

A container and closure as claimed in claim 23, wherein the closure includes a flange extending approximately parallel to the container opening axis so as to lie just radially within the edge of the container opening when the closure is in position closing the container opening.

Claim 29

A container and closure as claimed in claim 23, wherein the center portion of the closure has an annular trough positioned so as to lie radially within the edge of the container opening, the trough surrounding a central concave part, and the center portion being of reduced thickness compared to the securing members and said closure projection so as to be flexible.

Claim 30

A container and closure as claimed in claim 23, wherein the closure has retaining members which are spaced radially outwardly of the securing members and are arranged so that a loose clamping member passing betwEen the retaining members and the securing members is retained on the closure.

Claim 31

A container and closure as claimed in claim 26, wherein the securing members have outwardly-directed flanges on their edges remote from the container opening, and the retaining members extend approximately parallel to the securing members and the respective ends of the retaining members are closely adjacent the flanges on the securing members.

Claim 32

A container and closure as claimed in claim 27, wherein circumferentially, the retaining members lie between adjacent pairs of the securing members, and the respective ends of the retaining members terminate closely adjacent to the gaps between respective flanges on the securing members.

Claim 33

A container and closure as claimed in claim 23, wherein the first container neck and securing members have a greater length, as measured in the direction of the opening axis, than the width, as measured in the direction of the opening axis, of the clamping member, the securing members having a clamping zone of greater length than the width of the clamping member, and guide webs being provided adjacent the clamping zone, projecting radially outwardly from the securing members and having guide surfaces inclined toward the opening axis for guiding the clamping member into the clamping zone when the clamping member is tightened.

Claim 34

A container and closure as claimed in claim 29, wherein there are said guide webs both on the side of the clamping zone nearer the opening and on the other side of the clamping zone.