Patent US4022345A successfully refreshed from Google Patents.
US4022345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum with handling rings
Assignee: Advanced Chemical Technology Inc
•
Filing: 1976-03-15
•
Granted: 1977-05-10
•
Expires: 1996-03-15
Abstract
Abstract A plastic drum having a cylindrical mid-section and tapered shoulders terminating in generally planar end walls is adapted to receive and retain at its upper and lower shoulders, ring-shaped attachments encircling the circumference of the drum to facilitate handling and stacking.
Inventors
- 👤 Klaus Siegfried Butz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:24
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/40; B65D1/42; B65D1/48; B65D1/12; B65D1/14; B65D1/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
182 words
A handling ring for attachment to a drum having a first recessed wall portion adjacent an end of the drum, merging with it and recessed radially inwardly away from the end forming an undercut circumferentially-extending step between the shoulder of the drum and the end of the drum, and having a second groovelike recessed wall portion extending circumferentially on the side of the drum adjacent its shoulder and having a brow portion overhanging the second recessed portion, said handling ring comprising: a hub portion disposed on a circle of diameter substantially equal to the diameter of said first recessed wall portion; a circular rim portion integral with said hub portion, having a diameter equal to the largest diameter of the drum and coextensive with the end of the drum; and, a clamping portion including a surface adapted to substantially conform to the second recessed portion and the brow portion; whereby said hub portion fits into the undercut first recessed wall portion and said clamping portion fits into the groove-like second recessed wall portion to hold the ring in place on the drum.
Claim 2
Dependent Claim
182 words
A handling ring for attachment to a drum having a first recessed wall portion adjacent an end of the drum, merging with it and recessed radially inwardly away from the end forming an undercut circumferentially-extending step between the shoulder of the drum and the end of the drum, and having a second groovelike recessed wall portion extending circumferentially on the side of the drum adjacent its shoulder and having a brow portion overhanging the second recessed portion, said handling ring comprising: a hub portion disposed on a circle of diameter substantially equal to the diameter of said first recessed wall portion; a circular rim portion integral with said hub portion, having a diameter equal to the largest diameter of the drum and coextensive with the end of the drum; and, a clamping portion including a surface adapted to substantially conform to the second recessed portion and the brow portion; whereby said hub portion fits into the undercut first recessed wall portion and said clamping portion fits into the groove-like second recessed wall portion to hold the ring in place on the drum.
Claim 3
Dependent Claim
31 words
The handling ring of claim 1 for use with a drum having substantially planar ends, wherein said circular rim portion further comprises a surface coplanar with the end of the drum.
Claim 4
Dependent Claim
206 words
A drum adapted for use with an optionally affixable handling ring having a hub portion disposed on a circle of predetermined diameter and having a clamping portion including a circumferentially and radially, inwardly extending flange, said drum comprising: a first recessed wall portion adjacent an end of the drum, merging with it and recessed radially, inwardly away from the end forming an undercut circumferentially-extending step between the shoulder of the drum and the end of the drum, the shape of said first recessed wall portion substantially conforming to that of the hub portion of the handling ring, said first recessed wall portion having a diameter smaller than the diameter of the end of the drum; and, a groove-like second recessed wall portion extending circumferentially on the side of the drum adjacent the shoulder of the drum and having a brow portion overhanging said second recessed wall portion, said second recessed wall portion conforming in shape to the radially, inwardly extending flange of the handling ring; whereby the hub of the handling ring extends into the first recessed wall portion and the flange of the handling ring fits into the second recessed wall portion of the drum to hold the handling ring in place on the drum.
Claim 5
Dependent Claim
206 words
A drum adapted for use with an optionally affixable handling ring having a hub portion disposed on a circle of predetermined diameter and having a clamping portion including a circumferentially and radially, inwardly extending flange, said drum comprising: a first recessed wall portion adjacent an end of the drum, merging with it and recessed radially, inwardly away from the end forming an undercut circumferentially-extending step between the shoulder of the drum and the end of the drum, the shape of said first recessed wall portion substantially conforming to that of the hub portion of the handling ring, said first recessed wall portion having a diameter smaller than the diameter of the end of the drum; and, a groove-like second recessed wall portion extending circumferentially on the side of the drum adjacent the shoulder of the drum and having a brow portion overhanging said second recessed wall portion, said second recessed wall portion conforming in shape to the radially, inwardly extending flange of the handling ring; whereby the hub of the handling ring extends into the first recessed wall portion and the flange of the handling ring fits into the second recessed wall portion of the drum to hold the handling ring in place on the drum.
Claim 6
Dependent Claim
238 words
A drum and a handling ring for attachment to the drum, the combination comprising: a drum having a first recessed wall portion adjacent an end of the drum, merging with it and recessed radially, inwardly away from the end forming an undercut circumferentially-extending step between the shoulder of said drum and the end of said drum, said first recessed wall portion having a diameter smaller than the diameter of the end of said drum, said drum further having a groove-like second recess wall portion extending circumferentially on the side of the drum adjacent its shoulder and having a brow portion overhanging said second recessed portion; a handling ring having a hub portion disposed on a circle of diameter substantially equal to the diameter of said first recessed wall portion, having a circular rim portion integral with the hub portion, said circular rim portion having a diameter equal to the largest diameter of said drum and coextensive with the end of said drum, said handling ring further having a clamping portion including a surface adapted to substantially conform to the second recessed wall portion of said drum and to the brow portion of said drum; whereby the hub portion of said handling ring fits into the undercut first recessed wall portion and the clamping portion of said handling ring fits into the groovelike second recessed wall portion of said drum to hold the ring in place on the drum.
Claim 7
Dependent Claim
238 words
A drum and a handling ring for attachment to the drum, the combination comprising: a drum having a first recessed wall portion adjacent an end of the drum, merging with it and recessed radially, inwardly away from the end forming an undercut circumferentially-extending step between the shoulder of said drum and the end of said drum, said first recessed wall portion having a diameter smaller than the diameter of the end of said drum, said drum further having a groove-like second recess wall portion extending circumferentially on the side of the drum adjacent its shoulder and having a brow portion overhanging said second recessed portion; a handling ring having a hub portion disposed on a circle of diameter substantially equal to the diameter of said first recessed wall portion, having a circular rim portion integral with the hub portion, said circular rim portion having a diameter equal to the largest diameter of said drum and coextensive with the end of said drum, said handling ring further having a clamping portion including a surface adapted to substantially conform to the second recessed wall portion of said drum and to the brow portion of said drum; whereby the hub portion of said handling ring fits into the undercut first recessed wall portion and the clamping portion of said handling ring fits into the groovelike second recessed wall portion of said drum to hold the ring in place on the drum.
Claim 8
Dependent Claim
30 words
The combination of Claim 4, wherein said drum further comprises a substantially planar end and wherein said handling ring further comprises a surface coplanar with the end of said drum.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |