US4286377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacture for a resistance heater and temperature sensor
Assignee: General Electric Co
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Filing: 1979-06-04
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Granted: 1981-09-01
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Expires: 1999-06-04
Abstract
Abstract A method for making a combination heater and temperature sensor comprising the steps of forming a heater element pattern in a thin sheet of resistive material and concurrently forming a temperature sensor in a non-interfering portion of the same sheet of resistive material, the forming of the heater and sensor element patterns being carried out by a photoetching process.
Inventors
- 👤 Bohdan Hurko
- 👤 Raymond L. Dills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:46
CPC Classifications
H; H01; H01C; H01C3/00; H01C3/10; H01C3/12; G; G01; G01K; G01K7/00; G01K7/16; G01K7/18; G01K7/183; H01C17/00; H01C17/06; H01C17/07; H05; H05B; H05B3/00; H05B3/68; H05B3/74; H05B3/748; H05B2213/00; H05B2213/07; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49083; Y10T29/49085
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
A method of manufacturing a heater including a temperature sensor means, comprising the steps of: forming a serpentine shaped heater element pattern in a first thin sheet of resistive material, said pattern defining a first electrical current flow path; forming a serpentine shaped temperature sensor pattern in a second thin sheet of a material different from said first sheet and having a relatively high coefficient of resistivity, said second sheet substantially circumscribed by said first sheet and said sensor pattern being electrically insulated from said heater element pattern and having portions of a much thinner width than said heater element pattern portions, said temperature sensor pattern defining a second electrical current flow path independent of said first path, said steps being performed simultaneously by photoetching said patterns out of said sheets.
Claim 2
Independent Claim
131 words
A method of manufacturing a heater including a temperature sensor means, comprising the steps of: forming a serpentine shaped heater element pattern in a first thin sheet of resistive material, said pattern defining a first electrical current flow path; forming a serpentine shaped temperature sensor pattern in a second thin sheet of a material different from said first sheet and having a relatively high coefficient of resistivity, said second sheet substantially circumscribed by said first sheet and said sensor pattern being electrically insulated from said heater element pattern and having portions of a much thinner width than said heater element pattern portions, said temperature sensor pattern defining a second electrical current flow path independent of said first path, said steps being performed simultaneously by photoetching said patterns out of said sheets.
Claim 3
Dependent Claim
33 words
The method according to claim 1 wherein said method further includes the step of assembling said formed sheet into a sandwich having electrically insulative layers disposed on either side of said formed sheet.
Claim 4
Dependent Claim
51 words
The method according to claim 2 wherein said method further includes the step of mounting said sandwiched formed sheet against a glass ceramic plate, whereby said plate may be heated by passing electrical current through said heater element pattern, said glass ceramic plate comprising a support surface for said heater element.
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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) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |