US3871982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treatment of metal strip with a liquid
Assignee: Kalle GmbH and Co KG
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Filing: 1973-07-11
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Granted: 1975-03-18
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Expires: 1993-07-11
Abstract
Abstract This invention relates to an apparatus for the treatment of metal strip with a liquid, comprising, at least one tank provided with an inlet and an outlet for the strip, which inlet and outlet are below the level of the liquid surface in operation, which tank comprises at least one treatment chamber through which the strip is adapted to pass, a reserve chamber, means for transporting liquid from the reserve chamber to the treatment chamber, and two bell chamber means, one close to the inlet and the other close to the outlet, each bell chamber means having an overflow means for liquid to the reserve chamber and each bell chamber means being so constructed that, in operation, the space above the liquid surface is isolated from the ambient atmosphere and is in communication with pressure-reducing means. The invention also includes a novel process for the treatment of metal strip.
Inventors
- 👤 Walter Idstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:31
CPC Classifications
C; C25; C25D; C25D7/00; C25D7/06; C25D7/0614; C23; C23G; C23G3/00; C23G3/02; C23G3/021; C25D11/00; C25D11/005; C25D11/02; C25D11/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
132 words
An apparatus for the treatment of metal strip with a liquid, comprising, at least one tank provided with an inlet and an outlet for the strip, which inlet and outlet are below the level of the liquid surface in operation, which tank comprises at least one treatment chamber through which the strip is adapted to pass, a reserve chamber, means for transporting liquid from the reserve chamber to the treatment chamber, and two bell chamber means, one close to the inlet and the other close to the outlet, each bell chamber means having an overflow means for liquid to the reserve chamber and each bell chamber means being so constructed that, in operation, the space above the liquid surface is isolated from the ambient atmosphere and is in communication with pressure-reducing means.
Claim 2
Independent Claim
132 words
An apparatus for the treatment of metal strip with a liquid, comprising, at least one tank provided with an inlet and an outlet for the strip, which inlet and outlet are below the level of the liquid surface in operation, which tank comprises at least one treatment chamber through which the strip is adapted to pass, a reserve chamber, means for transporting liquid from the reserve chamber to the treatment chamber, and two bell chamber means, one close to the inlet and the other close to the outlet, each bell chamber means having an overflow means for liquid to the reserve chamber and each bell chamber means being so constructed that, in operation, the space above the liquid surface is isolated from the ambient atmosphere and is in communication with pressure-reducing means.
Claim 3
Dependent Claim
12 words
An apparatus as claimed in claim 1 including at least one electrode.
Claim 4
Dependent Claim
20 words
An apparatus as claimed in claim 2 wherein the electrode is arranged above the path of travel of the strip.
Claim 5
Dependent Claim
30 words
An apparatus as claimed in claim 3 including means for ensuring a rapid and uniform flow of liquid between the electrode and the path of the travel of the strip.
Claim 6
Dependent Claim
56 words
An apparatus as claimed in claim 4 wherein the inner wall of at least one of the bell chamber means is joined to an electrode, and the only means of communication between the treatment chamber and the bell chamber means is by gap means between the said electrode and the path of travel of the strip.
Claim 7
Dependent Claim
20 words
An apparatus as claimed in claim 5 wherein the inner wall of each bell chamber is joined to an electrode.
Claim 8
Dependent Claim
20 words
An apparatus as claimed in claim 6 where the treatment chamber is divided into two compartments by vertical wall means.
Claim 9
Dependent Claim
17 words
An apparatus as claimed in claim 1 wherein the reserve chamber is situated below the treatment chamber.
Claim 10
Dependent Claim
18 words
An apparatus as claimed in claim 1 wherein the inlet and outlet are at substantially the same level.
References Cited (Backward Citations)
CA749333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |