Patent US3202339A successfully refreshed from Google Patents.
Patent US4736862A successfully refreshed from Google Patents.
US4736862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum with bungs
Assignee: Mauser Werke GmbH
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Filing: 1981-06-26
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Granted: 1988-04-12
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Expires: 2001-06-26
Abstract
Abstract The invention is directed to a molded drum of thermoplastic material, in which the bungs are arranged in troughs on the drum-head and in which the troughs are open toward an adjacent L-shaped roller chime formed directly from the drum-body at some distance below the top end of the drum.
Inventors
- 👤 Theo Hammes
- 👤 Dietmar Przytulla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:58
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/12; B65D1/14; B65D1/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
In a blow-molded drum constructed of thermoplastic material and having bungs arranged in troughs in the drum head end in the region of the mold dividing seam and a roller chime of L-shaped cross section formed directly from the drum body at a distance below the head end, said roller chimes having a horizontal leg extending radially outwardly of the drum body and a vertical leg at the end of the horizontal leg, the improvement wherein: (a) the troughs are open toward the roller chime with the bottom wall merging smoothly with the horizontal leg of the chime; and (b) the bottom wall of each trough is of uniform thickness as measured at different locations in a radial direction toward the roller chime.
Claim 2
Dependent Claim
123 words
In a blow-molded drum constructed of thermoplastic material and having bungs arranged in troughs in the drum head end in the region of the mold dividing seam and a roller chime of L-shaped cross section formed directly from the drum body at a distance below the head end, said roller chimes having a horizontal leg extending radially outwardly of the drum body and a vertical leg at the end of the horizontal leg, the improvement wherein: (a) the troughs are open toward the roller chime with the bottom wall merging smoothly with the horizontal leg of the chime; and (b) the bottom wall of each trough is of uniform thickness as measured at different locations in a radial direction toward the roller chime.
Claim 3
Dependent Claim
37 words
A blow-molded drum with bungs according to either of claim 1, wherein: (a) the upper surface of the bottom of each trough forms a downwardly sloping plane merging smoothly with the upper surface of the horizontal leg.
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) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |