US3300840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making thermoelectric generators
Assignee: Individual
•
Filing: 1962-01-23
•
Granted: 1967-01-31
•
Expires: 1982-01-23
Abstract
No abstract record available.
Inventors
- 👤 Marshall Maurice Bernard
- 👤 Dennison H Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:02
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/81; H10N10/817; H10N10/10; H10N10/13; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A METHOD OF FORMING AN INTERNALLY SUPPORTED THERMOPILE ELEMENT COMPRISING THE STEPS OF WINDING UPON A MANDREL OF NON-CONDUCTIVE MATERIAL PROVIDED WITH AT LEAST ONE LONGITUDINALLY DISPOSED ELECTRICALLY CONDUCTIVE PORTION A COIL OF WIRE HAVING SPACED TURNS, A SEGMENT OF EACH COIL TURN MAKING CONTACT WITH THE CONDUCTIVE PORTION OF THE MANDREL, COATING APPROXIMATELY ONE-HALF OF EACH COIL TURN WITH A PLATING RESIST, ELECTROPLATING A DIFFERENT METAL FROM THAT OF SAID CONDUCTIVE PORTION AND SAID WIRE ON THE UNCOATED PORTIONS OF EACH TURN, AND REMOVING THE CONDUCTIVE PORTION OF THE MANDREL BY MEANS OF A CHEMICAL SOLUTION TO THEREBY PROVIDE INTERNAL PERMANENT SUPPORT TO SAID COIL BY MEANS OF SAID MANDREL.
Claim 2
Independent Claim
111 words
A METHOD OF FORMING AN INTERNALLY SUPPORTED THERMOPILE ELEMENT COMPRISING THE STEPS OF WINDING UPON A MANDREL OF NON-CONDUCTIVE MATERIAL PROVIDED WITH AT LEAST ONE LONGITUDINALLY DISPOSED ELECTRICALLY CONDUCTIVE PORTION A COIL OF WIRE HAVING SPACED TURNS, A SEGMENT OF EACH COIL TURN MAKING CONTACT WITH THE CONDUCTIVE PORTION OF THE MANDREL, COATING APPROXIMATELY ONE-HALF OF EACH COIL TURN WITH A PLATING RESIST, ELECTROPLATING A DIFFERENT METAL FROM THAT OF SAID CONDUCTIVE PORTION AND SAID WIRE ON THE UNCOATED PORTIONS OF EACH TURN, AND REMOVING THE CONDUCTIVE PORTION OF THE MANDREL BY MEANS OF A CHEMICAL SOLUTION TO THEREBY PROVIDE INTERNAL PERMANENT SUPPORT TO SAID COIL BY MEANS OF SAID MANDREL.
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |