US3776414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tanks for the continuous treatment of elongated metal workpieces
Assignee: PRODORITE Ltd
•
Filing: 1972-09-11
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Granted: 1973-12-04
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Expires: 1992-09-11
Abstract
Abstract A tank for the continuous treatment of elongated metal strips and workpieces by transient immersion in acid solutions comprises an elongated tubular construction having circumferentially extending tubular stiffening parts at spaced positions along its length, the wall of the tubular construction being formed with ports opening into the interior of said stiffening parts and said interiors of all of said stiffening parts being connected to a manifold for fume extraction purposes.
Inventors
- 👤 F Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:46
CPC Classifications
C; C23; C23G; C23G3/00; C23G3/02; C23G3/025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
55 words
A tank comprising an elongated tubular construction having circumferentially extending tubular stiffening parts at spaced positions along its length, the wall of the tubular construction being formed with ports opening into the interior of said stiffening parts and said interiors of all of said stiffening parts being connected to a manifold for fume extraction purposes.
Claim 2
Dependent Claim
55 words
A tank comprising an elongated tubular construction having circumferentially extending tubular stiffening parts at spaced positions along its length, the wall of the tubular construction being formed with ports opening into the interior of said stiffening parts and said interiors of all of said stiffening parts being connected to a manifold for fume extraction purposes.
Claim 3
Dependent Claim
18 words
A tank as claimed in claim 1 and which is supported by at least one hollow leg section.
Claim 4
Dependent Claim
16 words
A tank as claimed in claim 1 and which is supported by two hollow leg sections.
Claim 5
Dependent Claim
23 words
A tank as claimed in claim 3 in which one of the hollow leg sections serves as a manifold for fume extraction purposes.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |