Claims
- 1. 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, and a circumferentially disposed collar member assembled to said drum,
- said collar member comprising
- a generally circumferentially disposed collar sidewall; said collar being at no point higher than said top end panel and terminating at its highest portion in a bead-like portion which merges with said collar sidewall at the top thereof and projects radially outwardly from said sidewall of said collar, and which is spaced apart from, and does at no point in its circumference touch, said drum and is thus adapted for gripping about substantially the full 360.degree. of the collar circumference, by the opposed jaws of a steel drum chime-handling device having two opposed movable jaws to holdingly grip the collar with one jaw engaging the inside surface wall of the bead and the other jaw engaging the outer underside surface of the bead; and
- a radially inwardly disposed circumferential projection near its lower edge,
- said circumferential projection and said circumferential indentation being inter-engaged to retain said collar on said plastic drum while the drum is manipulated by such handling device which holdingly grips said collar.
- 2. An assembly of claim 1 wherein the top of the collar is disposed in substantially the same horizontal plane as the top of said top end panel.
- 3. 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, and a circumferentially disposed collar member removably assembled to said drum,
- said collar member comprising
- a generally circumferentially disposed collar sidewall;
- a bead-like portion merging with said collar sidewall at the top thereof, projecting radially outwardly from said sidewall of said collar and being adapted for gripping at its upper edge by steel drum chime-handling devices about substantially the full 360.degree. of the collar circumference; and
- a radially inwardly disposed circumferential projection at its lower edge,
- said circumferential projection and said circumferential indentation being inter-engaged as the sole means to retain said collar on said plastic drum while the drum is manipulated by such handling devices which holdingly grip said collar, said collar being in contact with said drum solely at said interengagement of said circumferential projection with said circumferential indentation.
- 4. 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 assembled to said drum, said collar having at its upper edge an annular, radially outwardly projecting bead adapted for gipping by steel drum chime-handling devices about substantially the full 360.degree. of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection snugly engaging said circumferential indentation to retain said collar on said plastic drum.
- 5. 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, and a circumferentially disposed collar removably assembled to said drum, said collar having at its upper edge an annular, radially outwardly projecting bead adapted for gripping by steel drum chime-handling devices about substantially the full 360.degree. of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection snugly engaging said circumferential indentation to retain said collar on said plastic drum, said collar above said circumferential projection being nowhere in contact with the plastic of said drum, so that the only portion of said collar in contact with the plastic of said drum is said circumferential projection.
- 6. A plastic drum assembly according to claim 1 wherein the drum has at least one channel formed in, and transverse to, the circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position.
- 7. 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.degree. 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.
- 8. 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.degree. 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.
Parent Case Info
This application is a continuation of Ser. No. 876,081, filed Feb. 8, 1978, now U.S. Pat. No. 4,294,374, which in turn is a continuation of Ser. No. 636,272, filed Nov. 28, 1975, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (2)
Number |
Date |
Country |
600094 |
Mar 1948 |
GBX |
847354 |
Sep 1960 |
GBX |
Continuations (2)
|
Number |
Date |
Country |
Parent |
876081 |
Feb 1978 |
|
Parent |
636272 |
Nov 1975 |
|