US3815620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring and/or control device for the setting of the constituents of a chemical solution especially of a galvanic bath
Assignee: Volkswagen AG
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Filing: 1971-06-18
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Granted: 1974-06-11
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Expires: 1991-06-18
Abstract
Abstract A system for the measuring and/or controlling of the chemical characteristics of a chemical solution having predetermined chemical characteristics, the system comprising a circulating arrangement through which the chemical solution is flowing, including an analyzer having measuring and reference electrodes placed into the circulating arrangement and which provides information as to the state of the characteristics and, means for delivering additional constituents into the container to maintain the characteristics at a predetermined desired value.
Inventors
- 👤 W Dziomba
- 👤 G Wolf
- 👤 R Beule
- 👤 G Dreyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:41
CPC Classifications
G; G05; G05D; G05D21/00; G05D21/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2509
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
179 words
A device for measuring and/or controlling chemical characteristics of a chemical solution contained in a container, comprising, in combination, a recirculating system with its inlet and outlet conduits connected to said container, filter means connected between said inlet conduit and said outlet conduit of said recirculating system, a return branch conduit connected to said outlet conduit and opening into said container, an analyzer disposed in said return branch conduit and including means for measuring the characteristics of the chemical solution flowing therethrough, said analyzer comprising several interconnected chambers, at least one of said chambers being a transition chamber that is located higher than the chemical solution in said container, a dosing device including supply means for feeding additional constituents to said chemical solution to bring said solution to a desired value, said supply means opening into said inlet conduit of said recirculating system, and control means operatively connected between said measuring means of said analyzer and said dosing device to control the delivery of said additional constituents in response to the state of the solution measured in said analyzer.
Claim 2
Independent Claim
179 words
A device for measuring and/or controlling chemical characteristics of a chemical solution contained in a container, comprising, in combination, a recirculating system with its inlet and outlet conduits connected to said container, filter means connected between said inlet conduit and said outlet conduit of said recirculating system, a return branch conduit connected to said outlet conduit and opening into said container, an analyzer disposed in said return branch conduit and including means for measuring the characteristics of the chemical solution flowing therethrough, said analyzer comprising several interconnected chambers, at least one of said chambers being a transition chamber that is located higher than the chemical solution in said container, a dosing device including supply means for feeding additional constituents to said chemical solution to bring said solution to a desired value, said supply means opening into said inlet conduit of said recirculating system, and control means operatively connected between said measuring means of said analyzer and said dosing device to control the delivery of said additional constituents in response to the state of the solution measured in said analyzer.
Claim 3
Dependent Claim
26 words
The combination as claimed in claim 1, wherein said analyzer further includes a temperature sensor for sensing the temperature of the chemical solution in said analyzer.
Claim 4
Dependent Claim
75 words
The device as claimed in claim 1, wherein said analyzer further including a temperature sensor for sensing the temperature of the chemical in said analyzer and said supply means in said dosing device includes a pump, said control means and said temperature sensor are coupled to said pump in series therewith to control its operation so that said pump is operational only when the temperature sensed corresponds to a predetermined desired value of the temperature.
Claim 5
Independent Claim
184 words
A device for measuring and/or controlling chemical characteristics of a chemical solution contained in a container, comprising in combination, a recirculating system with its inlet and outlet conduits connected to said container, filter means connected between said inlet conduit and said outlet conduit of said recirculating system, a return branch conduit connected to said outlet conduit and opening into said container, an analyzer disposed in said return branch conduit and including means for measuring the characteristics of the chemical solution flowing therethrough and a shield associated with said measuring means for shielding said measuring means from disturbing potentials, a dosing device including supply means for feeding additional constituents to said chemical solution to bring said solution to a desired value, said supply means opening into said inlet conduit of said recirculating system, and control means operatively connected between said measuring means of said analyzer and said dosing device to control the delivery of said additional constituents in response to the state of the solution measured in said analyzer, said analyzer comprising a plurality of interconnected chambers, one of said chambers containing said measuring means.
Claim 6
Independent Claim
184 words
A device for measuring and/or controlling chemical characteristics of a chemical solution contained in a container, comprising in combination, a recirculating system with its inlet and outlet conduits connected to said container, filter means connected between said inlet conduit and said outlet conduit of said recirculating system, a return branch conduit connected to said outlet conduit and opening into said container, an analyzer disposed in said return branch conduit and including means for measuring the characteristics of the chemical solution flowing therethrough and a shield associated with said measuring means for shielding said measuring means from disturbing potentials, a dosing device including supply means for feeding additional constituents to said chemical solution to bring said solution to a desired value, said supply means opening into said inlet conduit of said recirculating system, and control means operatively connected between said measuring means of said analyzer and said dosing device to control the delivery of said additional constituents in response to the state of the solution measured in said analyzer, said analyzer comprising a plurality of interconnected chambers, one of said chambers containing said measuring means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |