Patent US4197176A successfully refreshed from Google Patents.
US4197176A
Expired / Lapsed
US
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Apparatus for measuring surface characteristics of metals and metalloids
Assignee: Individual
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Filing: 1978-03-20
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Granted: 1980-04-08
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Expires: 1998-03-20
Abstract
Abstract A process applicable to metal and metalloid surfaces for detecting and determining the boundaries of stressed areas and areas exhibiting chemical variations involves ascertaining at a number of points on a surface the electrical potential generated between the surface and an electrode when both are in contact with a solution of an electrolyte. The surface and electrode may be of the same material or different and the electrolyte may be a soluble salt of the same metal as either the surface or the electrode or of another metal. The testing can be carried out by hand or automatically. Apparatus suitable for carrying out the tests is disclosed, such apparatus including means for testing individual points or for obtaining one or more continuous readings of the generated potential across the surface.
Inventors
- 👤 Minas Ensanian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:43
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/4166
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
89 words
Apparatus suitable for detecting chemical and physical irregularities in the surface of a metal-like material which comprises a movable electrode, a solution of a metal-salt electrolyte, said solution being held in a coherent, formed body rotatable about said electrode and rollable on said surface which permits establishment of an electrical circuit through said solution when said electrode and said surface are in contact therewith; and means for measuring voltage and polarity electrically connected between said electrode and said surface, said electrolyte solution being in the form of a gel.
Claim 2
Dependent Claim
89 words
Apparatus suitable for detecting chemical and physical irregularities in the surface of a metal-like material which comprises a movable electrode, a solution of a metal-salt electrolyte, said solution being held in a coherent, formed body rotatable about said electrode and rollable on said surface which permits establishment of an electrical circuit through said solution when said electrode and said surface are in contact therewith; and means for measuring voltage and polarity electrically connected between said electrode and said surface, said electrolyte solution being in the form of a gel.
Claim 3
Dependent Claim
22 words
Apparatus as set forth in claim 1 in which said coherent, formed, gel body of electrolyte solution is carried by said electrode.
Claim 4
Dependent Claim
19 words
Apparatus as set forth in claim 2 in which said body is formed of a gel of electrolyte solution.
Claim 5
Dependent Claim
21 words
Apparatus as set forth in claim 3 in which a portion of said electrode and said gel together form a wheel.
Claim 6
Dependent Claim
17 words
Apparatus as set forth in claim 4 in which said gel forms the rim of said wheel.
Claim 7
Dependent Claim
16 words
Apparatus as set forth in claim 1 in which said electrode comprises a plurality of parts.
Claim 8
Dependent Claim
15 words
Apparatus as set forth in claim 6 in which said parts are of different materials.
Claim 9
Dependent Claim
81 words
In apparatus for detecting chemical and physical irregularities in the surface of a metal-like material: a test probe comprising an electrode member, said electrode member carrying and being in electrical contact with a coherent, self-sustaining, firm, gel body, said body forming at least a portion of a wheel rotatably mounted on said electrode member, said wheel being adapted for rolling contact with said surface, having a constant area of contact with said electrode member, and comprising a solution of an electrolyte.
Claim 10
Dependent Claim
81 words
In apparatus for detecting chemical and physical irregularities in the surface of a metal-like material: a test probe comprising an electrode member, said electrode member carrying and being in electrical contact with a coherent, self-sustaining, firm, gel body, said body forming at least a portion of a wheel rotatably mounted on said electrode member, said wheel being adapted for rolling contact with said surface, having a constant area of contact with said electrode member, and comprising a solution of an electrolyte.
Claim 11
Dependent Claim
16 words
Apparatus as defined in claim 8 wherein said body is an annulus mounted on said electrode.
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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) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |