US4088509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermocouple protection tubes
Assignee: Mcdanel Refractory Porcelain Co
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Filing: 1977-03-04
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Granted: 1978-05-09
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Expires: 1997-03-04
Abstract
Abstract An all ceramic thermocouple protector tube is provided having a tubular elongate ceramic thermocouple protector closed at one end and open at the other to receive a thermocouple, an adjacent larger diameter cylindrical ceramic housing spaced from said tubular elongate thermocouple protector and connected thereto by a hollow frusto conical ceramic member having a taper in the range 20° to 60° and an annular pocket in the end of said housing remote from the frusto conical portion adapted to receive a cover.
Inventors
- 👤 Joseph E. Blaze, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:14
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
An all ceramic thermocouple protector comprising a tubular elongate ceramic thermocouple protector closed at one end and open at the other to receive a thermocouple, an adjacent larger diameter cylindrical ceramic housing spaced from said tubular elongate thermocouple protector and connected thereto by a hollow frusto conical ceramic member having a taper in the range 20° to 60° and an annular pocket in the end of said housing remote from the frusto conical portion adapted to receive a cover.
Claim 2
Dependent Claim
79 words
An all ceramic thermocouple protector comprising a tubular elongate ceramic thermocouple protector closed at one end and open at the other to receive a thermocouple, an adjacent larger diameter cylindrical ceramic housing spaced from said tubular elongate thermocouple protector and connected thereto by a hollow frusto conical ceramic member having a taper in the range 20° to 60° and an annular pocket in the end of said housing remote from the frusto conical portion adapted to receive a cover.
Claim 3
Dependent Claim
19 words
An all ceramic thermocouple protector as claimed in claim 1 wherein the frusto conical portion has a 30°-45° taper.
Claim 4
Dependent Claim
39 words
An all ceramic thermocouple protector as claimed in claim 1 wherein the inner annular pocket is formed by a second frusto conical portion extending radially outwardly from the end of the housing remote from the frusto conical connector portion.
Claim 5
Dependent Claim
35 words
An all ceramic thermocouple protector as claimed in claim 1 having a circular ceramic cover fitting within the annular pocket and carrying lead posts for connecting thermocouple wires to lead wires for a recording instrument.
Claim 6
Dependent Claim
37 words
An all ceramic thermocouple protector as claimed in claim 3 having a circular ceramic cover fitting with the second frusto conical portion and carrying lead posts for connecting thermocouple wires to lead wires for a recording instrument.
Claim 7
Dependent Claim
33 words
An all ceramic thermocouple protector as claimed in claim 5 wherein spring means engaged over the edges of the second frusto conical portion urge the cover into sealing engagement with the inner pocket.
References Cited (Backward Citations)
US3725134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |