US3754172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring capacitor
Assignee: Zellweger Uster AG
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Filing: 1971-08-02
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Granted: 1973-08-21
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Expires: 1991-08-02
Abstract
Abstract A device for measuring the physical characteristics of textile materials, such as slivers, rovings and yarns, is provided in the form of a capacitor having electrodes comprising a pair of substantially parallel bodies of high frequency ceramic material having plane parallel surfaces and being separated by an air space to permit passage of the textile material therethrough. Each ceramic body is provided with one conductive coating forming the capacitor electrode and a surrounding coating serving as a shield. A terminal extends through said ceramic body from one end thereof into contact with the capacitor electrode.
Inventors
- 👤 D Hoffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:39
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/36; G01N33/365; B; B65; B65H; B65H63/00; B65H63/06; B65H63/062; B65H63/064; G01B; G01B7/00; G01B7/02; G01B7/06; G01B7/08; G01B7/087; G01N27/00; G01N27/02; G01N27/22; G01N27/226; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
A measuring electrode for use in a plate capacitor capable of measuring the physical characteristics of textile materials, such as slivers, rovings and yarns, comprising a body of high frequency ceramic material having plane-parallel surfaces, at least one conductive coating applied with uniform thickness by vapor deposition to at least one plane surface of said ceramic body, including aterminal extending through said ceramic body from one end thereof into contact with said capacitor electrode, and an additional conductive coating provided on the plane surface of said ceramic body in surrounding relationship to said one coating to serve as a shield, including second and third terminals connected to said additional conductive coating by coatings continued on the surface of said body to one end thereof.
Claim 2
Dependent Claim
124 words
A measuring electrode for use in a plate capacitor capable of measuring the physical characteristics of textile materials, such as slivers, rovings and yarns, comprising a body of high frequency ceramic material having plane-parallel surfaces, at least one conductive coating applied with uniform thickness by vapor deposition to at least one plane surface of said ceramic body, including aterminal extending through said ceramic body from one end thereof into contact with said capacitor electrode, and an additional conductive coating provided on the plane surface of said ceramic body in surrounding relationship to said one coating to serve as a shield, including second and third terminals connected to said additional conductive coating by coatings continued on the surface of said body to one end thereof.
Claim 3
Independent Claim
75 words
A device for measuring the physical characteristics of textile materials, such as slivers, rovings and yarns, comprising a pair of substantially parallel bodies of high-frequency ceramic material having plane-parallel surfaces and being separated by an unobstructed air space to permit passage of the textile material therethrough, and at leat one conductive coating forming a capacitor electrode applied with uniform thickness by vapor deposition to at least one plane surface of each of said ceramic bodies.
Claim 4
Independent Claim
75 words
A device for measuring the physical characteristics of textile materials, such as slivers, rovings and yarns, comprising a pair of substantially parallel bodies of high-frequency ceramic material having plane-parallel surfaces and being separated by an unobstructed air space to permit passage of the textile material therethrough, and at leat one conductive coating forming a capacitor electrode applied with uniform thickness by vapor deposition to at least one plane surface of each of said ceramic bodies.
Claim 5
Dependent Claim
45 words
A device as defined in claim 2 wherein an additional conductive coating is provided on the plane surface of each ceramic body in surrounding relationship to said one coating, said one coating serving as the capacitor electrode and said additional coating serving as a shield.
Claim 6
Dependent Claim
32 words
A device as defined in claim 3 wherein said plane surfaces of said ceramic bodies are ground so as to be absolutely plane-parallel and said bodies being disposed is closely spaced-parallel relationship.
Claim 7
Dependent Claim
26 words
A measuring electrode as defined in claim 2 including a terminal extending through said ceramic body from one end thereof into contact with said capacitor electrode.
Claim 8
Dependent Claim
32 words
A measuring electrode as defined in claim 5 including second and third terminals connected to said additional conductive coating by coatings continued on the surface of said body to one end thereof.
References Cited (Backward Citations)
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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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |