US3982218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature sensing device and method
Assignee: Corning Glass Works
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Filing: 1974-09-19
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Granted: 1976-09-21
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Expires: 1994-09-19
Abstract
Abstract A temperature sensing device and a method of forming it is disclosed. A first film or coating of an adherent electro-conductive metallic oxide is applied over the exterior surface of a dielectric substrate. The metal oxide coating is thereafter thoroughly cleansed and a second coating or layer of a metal having a relatively high temperature coefficient of resistance is applied over the metallic oxide film so as to form a strong physical bond as well as a chemical bond therebetween. The composite so formed is fired at a temperature up to about 750°C. If desired, the metal layer is thereafter suitably spiralled to provide the desired resistance and terminal leads are attached to the element. Also, if desired, the element is then coated with a dielectric protective coating.
Inventors
- 👤 Meryle D. W. Adler
- 👤 John T. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:27
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/075; H01C1/00; H01C1/14; H01C1/1406; H01C7/00; H01C7/02; H01C7/021; H01C7/22; Y; Y10; Y10S; Y10S205/00; Y10S205/917
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
74 words
A device for sensing temperature comprising a dielectric substrate, a first adherent electroconductive film of a metallic oxide on the exterior surface of said substrate, a layer of metal disposed over substantially the entire surface of said metallic oxide film selected from the group consisting of nickel, chromium, platinum, zirconium, zinc, molybdenum, and iron, and a pair of terminals affixed to the ends of said substrate in electrical contact with said layer of metal.
Claim 2
Independent Claim
74 words
A device for sensing temperature comprising a dielectric substrate, a first adherent electroconductive film of a metallic oxide on the exterior surface of said substrate, a layer of metal disposed over substantially the entire surface of said metallic oxide film selected from the group consisting of nickel, chromium, platinum, zirconium, zinc, molybdenum, and iron, and a pair of terminals affixed to the ends of said substrate in electrical contact with said layer of metal.
Claim 3
Dependent Claim
12 words
The device of claim 1 wherein said layer of metal is nickel.
Claim 4
Dependent Claim
27 words
The device of claim 1 further comprising a dielectric protective coating applied to the exterior surface of said device, said terminal leads extending beyond said protective coating.
Claim 5
Dependent Claim
17 words
The device of claim 1 wherein said layer of metal is spiralled to increase the resistivity thereof.
Claim 6
Dependent Claim
13 words
The device of claim 1 wherein said dielectric substrate is an alkali-free glass.
Claim 7
Dependent Claim
18 words
The device of claim 1 wherein said first adherent electroconductive film of metallic oxide is a tin-antimony oxide.
Claim 8
Dependent Claim
35 words
The device of claim 6 wherein said tin-antimony oxide film has a resistivity of up to about 100 ohms per square, the layer of metal is nickel, and the dielectric substrate is an alkali-free glass.
Claim 9
Independent Claim
69 words
A method of forming a temperature sensing device comprising providing a dielectric substrate, forming an adherent coating of an electroconductive metallic oxide on the surface of said substrate, applying a layer of metal over substantially the entire surface of said metallic oxide selected from the group consisting of nickel, chromium, platinum, zirconium, zinc, molybdenum, and iron, and then heating the composite so formed to a temperature up to 50°C.
Claim 10
Independent Claim
69 words
A method of forming a temperature sensing device comprising providing a dielectric substrate, forming an adherent coating of an electroconductive metallic oxide on the surface of said substrate, applying a layer of metal over substantially the entire surface of said metallic oxide selected from the group consisting of nickel, chromium, platinum, zirconium, zinc, molybdenum, and iron, and then heating the composite so formed to a temperature up to 50°C.
Claim 11
Dependent Claim
27 words
The method of claim 8 wherein said metallic oxide coating is a coating of tin-antimony oxide having a resistivity of up to about 100 ohms per square.
Claim 12
Dependent Claim
14 words
The method of claim 8 wherein said layer of metal is applied by electroplating.
Claim 13
Dependent Claim
14 words
The method of claim 8 wherein said layer of metal is applied vapor deposition.
Claim 14
Dependent Claim
26 words
The method of claim 8 further comprising the step of increasing the electrical path of the coating of metallic oxide and layer of metal by spiralling.
Claim 15
Dependent Claim
12 words
The method of claim 8 wherein said layer of metal is nickel.
Claim 16
Dependent Claim
12 words
The method of claim 8 wherein said dielectric substrate is alkali-free glass.
Claim 17
Dependent Claim
16 words
The method of claim 8 further comprising the step of affixing terminal leads to said device.
Claim 18
Dependent Claim
29 words
The method of claim 15 further comprising the step of applying a dielectric protective coating over the exterior surface of said device so formed, said terminal leads extending therebeyond.
Claim 19
Dependent Claim
42 words
The method of claim 8 further comprising the following steps before applying said layer of metal immersing the substrate-metallic oxide coating the composite in a base bath, rinsing said composite, immersing said composite in an acid bath, and thereafter rinsing said composite.
Claim 20
Dependent Claim
16 words
The method of claim 17 further comprising the step of affixing terminal leads to said device.
Claim 21
Dependent Claim
39 words
The method of claim 18 wherein said metallic oxide coating is a coating of tin-antimony having a resistivity of up to about 100 ohms per square, the layer of metal is nickel, and the dielectric substrate is alkali-free glass.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |