US3930892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replacement thermocouple apparatus for a pilot burner
Assignee: Robertshaw Controls Co
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Filing: 1973-11-26
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Granted: 1976-01-06
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Expires: 1993-11-26
Abstract
Abstract Replacement thermocouple apparatus for attachment to a pilot gas burner. The adaptor and thermocouple mounting portion are yieldably restrained against relative axially sliding movement to enable initial slip-on positioning of the thermocouple relative to the pilot burner flame. The thermocouple body is slightly rotated with an up and down movement within the adaptor to obtain final positioning of the thermocouple tip relative to the burner flame.
Inventors
- 👤 Donnell H. Fox
- 👤 Donald K. Murrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:52
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/14; F; F23; F23Q; F23Q9/00; F23Q9/02; F23Q9/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
Thermocouple apparatus for use with a burner having a mounting bracket formed with a threaded aperture, said thermocouple apparatus comprising: an elongated thermocouple body of generally cylindrical configuration having a flame-receiving tip and said body also having a mounting portion formed with external axially spaced grooves; a barrel like adaptor body formed with a coaxial opening that receives said thermocouple body, said body also being formed with external threads engageable with the threads of the mounting bracket aperture to secure said body therewithin; and a tapered frusto-conical spring clip that is openable circumferentially and includes means for locking said spring to said adaptor so as to be both axially and nonrotatably secured within the opening of said adaptor body, said spring clip being formed with a detent frictionally engaged with the grooves of the thermocouple body mounting portion whereby said body may be vertically adjusted relative to said adaptor body.
Claim 2
Dependent Claim
150 words
Thermocouple apparatus for use with a burner having a mounting bracket formed with a threaded aperture, said thermocouple apparatus comprising: an elongated thermocouple body of generally cylindrical configuration having a flame-receiving tip and said body also having a mounting portion formed with external axially spaced grooves; a barrel like adaptor body formed with a coaxial opening that receives said thermocouple body, said body also being formed with external threads engageable with the threads of the mounting bracket aperture to secure said body therewithin; and a tapered frusto-conical spring clip that is openable circumferentially and includes means for locking said spring to said adaptor so as to be both axially and nonrotatably secured within the opening of said adaptor body, said spring clip being formed with a detent frictionally engaged with the grooves of the thermocouple body mounting portion whereby said body may be vertically adjusted relative to said adaptor body.
Claim 3
Dependent Claim
41 words
Thermocouple apparatus as set forth in claim 1 wherein: said adaptor body is formed with a second set of external threads axially spaced from the other threads and on a portion of said body of different diameter than the firstmentioned threads.
Claim 4
Dependent Claim
34 words
Thermocouple apparatus as set forth in claim 1 wherein: the grooves on said thermocouple body are threads whereby relative rotation between the adaptor body and the thermocouple body will effect concurrent axial movement therebetween.
Claim 5
Dependent Claim
34 words
Thermocouple apparatus as set forth in claim 2 wherein: the grooves on said thermocouple body are threads whereby relative rotation between the adaptor body and the thermocouple body will effect concurrent axial movement therebetween.
References Cited (Backward Citations)
US3290178A
Cited
US3650843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |