Patent US4210508A successfully refreshed from Google Patents.
US4210508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic hygrometer improvement
Assignee: Individual
•
Filing: 1975-12-15
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Granted: 1980-07-01
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Expires: 1995-12-15
Abstract
Abstract In the present invention the cell of the electrolytic hygrometer is fabricated with a helical pair of different wires which may be either two precious metals or one of these with one non-precious metal. Appropriate polarities are included.
Inventors
- 👤 Gustav Bergson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/42; G01N27/423
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
68 words
An electrolytic cell comprising an insulating outer casing and within that casing an inner element having a helical pair of wires of different material which are spaced from each other but in contact with a hygroscopic material which is electrically conducting only when wet, one of the wires being an anode selected from the class consisting of platinum and rhodium and the other being a cathode of tantalum.
Claim 2
Dependent Claim
68 words
An electrolytic cell comprising an insulating outer casing and within that casing an inner element having a helical pair of wires of different material which are spaced from each other but in contact with a hygroscopic material which is electrically conducting only when wet, one of the wires being an anode selected from the class consisting of platinum and rhodium and the other being a cathode of tantalum.
Claim 3
Dependent Claim
98 words
An electrolytic cell comprising an insulating outer casing and within that casing an inner element having a helical pair of wires of different materials which are spaced from each other but in contact with a hygroscopic material which is electrically conducting only when wet, one of the wires being an anode selected from the class consisting of platinum and rhodium and the other being a cathode of tantalum, said wires having terminal connections which are independently identifiable, said element being sealed in said outer casing and said outer casing having connection means for passing gas through said element.
Claim 4
Dependent Claim
98 words
An electrolytic cell comprising an insulating outer casing and within that casing an inner element having a helical pair of wires of different materials which are spaced from each other but in contact with a hygroscopic material which is electrically conducting only when wet, one of the wires being an anode selected from the class consisting of platinum and rhodium and the other being a cathode of tantalum, said wires having terminal connections which are independently identifiable, said element being sealed in said outer casing and said outer casing having connection means for passing gas through said element.
Claim 5
Dependent Claim
107 words
An electrolytic cell comprising an insulating outer casing and within that casing an inner element having a helical pair of wires of different materials which are spaced from each other but in contact with a hygroscopic material which is electrically conducting only when wet, one of the wires being an anode selected from the class consisting of platinum and rhodium and the other being a cathode of tantalum, said wires having terminal connections which are independently identifiable, said element being sealed in said outer casing and said outer casing having connection means for passing gas through said element, said terminal connections being continued through said outer casing.
Claim 6
Dependent Claim
107 words
An electrolytic cell comprising an insulating outer casing and within that casing an inner element having a helical pair of wires of different materials which are spaced from each other but in contact with a hygroscopic material which is electrically conducting only when wet, one of the wires being an anode selected from the class consisting of platinum and rhodium and the other being a cathode of tantalum, said wires having terminal connections which are independently identifiable, said element being sealed in said outer casing and said outer casing having connection means for passing gas through said element, said terminal connections being continued through said outer casing.
Claim 7
Dependent Claim
24 words
An electrolytic cell of claim 3, which includes a means for regulating the rate at which gas flows through said element of said cell.
Claim 8
Dependent Claim
19 words
An electrolytic cell with gas regulating means of claim 4 which includes a voltage supply means for said cell.
Claim 9
Dependent Claim
29 words
An electrolytic cell with gas regulating means and voltage supply means of claim 5, which includes a means for measuring the current passing between the terminals of said cell.
References Cited (Backward Citations)
US1477099A
Cited
US2830945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-01 | 1983-12-31 | 1984-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-01 | 1987-12-31 | 1988-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-01 | 1991-12-31 | 1992-07-01 | $7700.00 | Window Closed / Lapsed |