Plastic drum assembly

Claim 2

A plastic drum assembly comprising a single piece blow molded plastic drum having a top end panel, a bottom end panel, and a circumferential sidewall joining said top and bottom end panels, said top end panel defining at least one opening therethrough, said sidewall including a horizontal circumferential recess adjacent said top end having a substantially semi-circular cross section and at least one arcuate substantially vertical drain channel formed in the surface of said recess and a split metal collar mounted on said drum having a vertically disposed wall portion including a substantially circumferential inwardly extending projection adjacent the lower margin of said vertically disposed wall portion, said inwardly extending projection having a substantially semi-circular cross section positioned within and in snug contact with said recess, said metal collar further including a substantially circumferential rolled annular bead disposed adjacent the upper margin of said vertically disposed wall portion, said annular bead located above said top end, whereby said metal collar and drum are movable by chime-gripping drum handling devices.

Claim 3

The plastic drum assembly of claim 1, wherein said circumferential sidewall includes an additional circumferential indentation adjacent said bottom end panel and an additional split cylindrical metal collar removably assembled to the bottom end of said plastic drum, said split metal collar having a circumferential rolled rim at its lower edge engageable by chime-handling devices and an inwardly disposed circumferential projection engaging said additional circumferential indentation to retain said additional split metal collar on said plastic drum, and fastening means on said additional split metal collar for removably mounting said additional split metal collar on said plastic drum.

Claim 4

The plastic drum assembly of claim 1, wherein said split metal collar is slit vertically and has movable first and second ends, said fastening means comprising at least two fastening assemblies vertically spaced and joining said first and second ends, whereby said first and second ends may be moved toward and away from each other while remaining in parallel alignment.

Claim 5

The plastic drum assembly of claim 1, wherein said top end panel includes an upwardly directed cylindrical portion circumjacent said opening, and said split metal collar extends upwardly at least as high as the upper extremity of said upwardly directed cylindrical portion.

Claim 6

The plastic drum assembly of claim 1, wherein said plastic drum and said split metal collar each include inter-engaging nesting surfaces.

Claim 7

The plastic drum assembly of claim 1, wherein said circumferential sidewall includes at least one outwardly projecting rolling hoop.

Claim 8

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one substantially vertically disposed arcuate channel formed in said circumferential indentation for drainage of liquids from said top end panel, and a split cylindrical metal collar removably assembled to said drum, said split metal collar having a rolled rim at its upper edge for engagement with chime-handling devices and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split metal collar on said plastic drum, and fastening means on said split metal collar for removably mounting said split metal collar on said plastic drum.

Claim 9

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one substantially vertically disposed arcuate channel formed in said circumferential indentation for drainage of liquids from said top end panel, and a split cylindrical metal collar removably assembled to said drum, said split metal collar having a rolled rim at its upper edge for engagement with chime-handling devices and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split metal collar on said plastic drum, and fastening means on said split metal collar for removably mounting said split metal collar on said plastic drum.

Claim 10

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining at least one opening therethrough and said circumferential sidewall including a horizontally disposed circumferential indentation adjacent said top end panel and a split cylindrical metal collar removably assembled to said drum, said collar having a substantially circumferential rolled rim adjacent the upper margin, engageable by chime-handling devices, a vertical sidewall and a substantially circumferential inwardly disposed projection adjacent the lower margin engaging said indentation, said collar also including at least one drainage hole located generally at the intersection of said inwardly disposed projection and said vertical sidewall of said collar, whereby liquid collecting on said top panel and within said collar are drained therethrough.

Claim 11

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining at least one opening therethrough and said circumferential sidewall including a horizontally disposed circumferential indentation adjacent said top end panel and a split cylindrical metal collar removably assembled to said drum, said collar having a substantially circumferential rolled rim adjacent the upper margin, engageable by chime-handling devices, a vertical sidewall and a substantially circumferential inwardly disposed projection adjacent the lower margin engaging said indentation, said collar also including at least one drainage hole located generally at the intersection of said inwardly disposed projection and said vertical sidewall of said collar, whereby liquid collecting on said top panel and within said collar are drained therethrough.

Claim 12

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining at least one opening therethrough, said circumferential sidewall including a circumferential projection adjacent said top end panel, and a split cylindrical metal collar removably assembled to said drum, said split collar having a rolled rim at its upper edge for engagement with chime-handling devices, a vertical sidewall, an outwardly disposed circumferential indentation at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split metal collar on said plastic drum, at least one drain hole located generally at the intersection of said vertical sidewall and said outwardly disposed circumferential indentation, and fastening means for removably mounting said split metal collar on said plastic drum.

Claim 13

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining at least one opening therethrough, said circumferential sidewall including a circumferential projection adjacent said top end panel, and a split cylindrical metal collar removably assembled to said drum, said split collar having a rolled rim at its upper edge for engagement with chime-handling devices, a vertical sidewall, an outwardly disposed circumferential indentation at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split metal collar on said plastic drum, at least one drain hole located generally at the intersection of said vertical sidewall and said outwardly disposed circumferential indentation, and fastening means for removably mounting said split metal collar on said plastic drum.

Claim 14

The plastic drum assembly of claim 9, wherein said circumferential sidewall includes an additional circumferential projection adjacent said bottom end panel and an additional split cylindrical metal collar removably mounted on the bottom end of said plastic drum, said split metal collar having a circumferential rolled rim at its lower edge engageable by chime-handling devices and an outwardly disposed circumferential indentation at its upper edge, said additional circumferential projection engaging said circumferential indentation to retain said additional split metal collar on said plastic drum, and fastening means on said additional split metal collar for removably mounting said additional split metal collar on said plastic drum.

Claim 15

The plastic drum assembly of claim 9, wherein said circumferential sidewall includes at least one outwardly projecting rolling hoop.

Claim 16

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a split circumferentially disposed collar removably assembled to said drum, said split collar being adapted for gripping at its upper edge for engagement with chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split collar on said plastic drum.

Claim 17

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a split circumferentially disposed collar removably assembled to said drum, said split collar being adapted for gripping at its upper edge for engagement with chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split collar on said plastic drum.

Claim 18

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one substantially vertically disposed arcuate channel formed in said circumferential indentation for drainage of liquids from said top end panel while said drum is disposed in an upright position, and a circumferentially disposed split metal collar removably assembled to said drum, said split metal collar having a rolled rim at its upper edge for engagement with chime-handling devices and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split metal collar on said plastic drum, and fastening means on said split metal collar for removably mounting said split metal collar on said plastic drum.

Claim 19

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one substantially vertically disposed arcuate channel formed in said circumferential indentation for drainage of liquids from said top end panel while said drum is disposed in an upright position, and a circumferentially disposed split metal collar removably assembled to said drum, said split metal collar having a rolled rim at its upper edge for engagement with chime-handling devices and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split metal collar on said plastic drum, and fastening means on said split metal collar for removably mounting said split metal collar on said plastic drum.

Claim 20

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a circumferentially disposed collar removably assembled to said drum, said collar having at its upper edge an annular bead adapted for gripping by steel drum chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.

Claim 21

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a circumferentially disposed collar removably assembled to said drum, said collar having at its upper edge an annular bead adapted for gripping by steel drum chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.

Claim 22

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a circumferentially disposed collar removably assembled to said drum, said collar being adapted for gripping at its upper edge for engagement with chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.

Claim 23

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a circumferentially disposed collar removably assembled to said drum, said collar being adapted for gripping at its upper edge for engagement with chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.

Claim 24

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a circumferentially disposed collar removably assembled to said drum, said collar having at its upper edge an annular bead adapted for gripping by steel chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.

Claim 25

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a circumferentially disposed collar removably assembled to said drum, said collar having at its upper edge an annular bead adapted for gripping by steel chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.

Claim 26

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a split circumferentially disposed collar removably assembled to said drum, said split collar having at its upper edge an annular bead adapted for gripping by steel chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.

Claim 27

A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a split circumferentially disposed collar removably assembled to said drum, said split collar having at its upper edge an annular bead adapted for gripping by steel chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.