US4186368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide range, quick response temperature probe sensor
Assignee: Tektronix Inc
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Filing: 1978-05-30
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Granted: 1980-01-29
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Expires: 1998-05-30
Abstract
Abstract An improved resistance-type sensor for an electrical temperature probe includes a thin-film platinum resistor deposited on an oxidized silicon chip. The chip is eutectically bonded to the planar reverse side of a beryllium oxide tip-piece having a hemispherical face adapted for contacting the surface of an object being measured. The tip-piece is set in a thermal insulating plastic mount, spaced from a pair of low resistance electrical leads held by the mount. Very fine wires bonded between the leads and platinum resistor form high thermal impedance electrical connections to the temperature-sensing element.
Inventors
- 👤 Peter M. White
- 👤 David L. Timmins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:09
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/16; G01K7/18; G01K7/183; G01K1/00; G01K1/16; H; H01; H01C; H01C7/00; H01C7/02; H01C7/021
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
A sensor assembly for use in an electrical temperature measuring system that includes a probe, comprising: heat conducting dielectric support and contact means including a first surface for supporting a temperature-sensing element and a second, curved surface for contacting a surface of an object being measured, a temperature sensitive resistor disposed on said first surface in heat conducting relation therewith, heat insulating dielectric means mounting said contact and support means in said probe with said second surface exposed, first electrical conductor means mounted in spaced, adjacent relation to said resistor, and second electrical conductor means connecting said resistor to said first conductor means, said second conductor means having a heat conducting capability substantially less than that of said first conductor means.
Claim 2
Dependent Claim
121 words
A sensor assembly for use in an electrical temperature measuring system that includes a probe, comprising: heat conducting dielectric support and contact means including a first surface for supporting a temperature-sensing element and a second, curved surface for contacting a surface of an object being measured, a temperature sensitive resistor disposed on said first surface in heat conducting relation therewith, heat insulating dielectric means mounting said contact and support means in said probe with said second surface exposed, first electrical conductor means mounted in spaced, adjacent relation to said resistor, and second electrical conductor means connecting said resistor to said first conductor means, said second conductor means having a heat conducting capability substantially less than that of said first conductor means.
Claim 3
Dependent Claim
18 words
The assembly of claim 1, wherein said temperature sensitive resistor is formed from a thin film of platinum.
Claim 4
Dependent Claim
52 words
The assembly of claim 1 or 2, wherein said contact and support means comprises a chip of silicon supporting said temperature sensitive resistor on an oxidized first surface thereof, and a body of beryllium oxide having a hemispherically curved second surface, said chip and body being bonded together in heat conducting relation.
Claim 5
Dependent Claim
19 words
The assembly of claim 1, wherein said dielectric mounting means comprises a geneally ring-shaped body of a silicone compound.
Claim 6
Dependent Claim
133 words
In a temperature probe, a sensor assembly comprising: a body of beryllium oxide having a planar first surface and a hemispherically curved second surface opposite said first surface, a body of silicon attached to said first surface in heat transfer relation, said silicon body including an oxidized third surface, a thin-film platinum resistor disposed on said third surface, heat insulating dielectric means mounting said beryllium oxide and silicon bodies in said probe with said second surface exposed, first electrical conductor means in said probe, said first conductor means including portions thereof disposed in spaced adjacent relation to said resistor, and second electrical conductor means connecting said resistor to said portion of the first conductor means, said second conductor means having a heat conducting capability substantially less than that of said first conductor means.
Claim 7
Dependent Claim
133 words
In a temperature probe, a sensor assembly comprising: a body of beryllium oxide having a planar first surface and a hemispherically curved second surface opposite said first surface, a body of silicon attached to said first surface in heat transfer relation, said silicon body including an oxidized third surface, a thin-film platinum resistor disposed on said third surface, heat insulating dielectric means mounting said beryllium oxide and silicon bodies in said probe with said second surface exposed, first electrical conductor means in said probe, said first conductor means including portions thereof disposed in spaced adjacent relation to said resistor, and second electrical conductor means connecting said resistor to said portion of the first conductor means, said second conductor means having a heat conducting capability substantially less than that of said first conductor means.
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) | 1983-01-28 | 1983-07-30 | 1984-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-28 | 1987-07-30 | 1988-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-28 | 1991-07-30 | 1992-01-29 | $7700.00 | Window Closed / Lapsed |