US3171875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold molded resistor and method of fabricating same
Assignee: Model Engineering and Manufacturing Corp
•
Filing: 1962-03-12
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Granted: 1965-03-02
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Expires: 1982-03-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Wright
- 👤 Donald D Herendeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:34
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/02; H01C1/034; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
A METHOD OF MANUFACTURING POWER RESISTORS OF THE TYPE WHEREIN A RESISTANCE ELEMENT IS ENCASED IN A PROTECTIVE MATERIAL COMPRISING: FIRST FORMING A DRY MIX BY BLENDING HYDRAULIC CEMENT 20-50% OF THE TOTAL DRY MIX WEIGHT, INERT AGGREGATE 50-80% OF THE TOTAL DRY MIX WEIGHT; SECOND, MAKING A WET MIX BY ADDING TO THE SAID DRY MIX APPROXMATELY EIGHT TO TWENTY CC. OF WATER PER ONE HUNDRED GRAMS OF SAID DRY MIX; THIRD, BLENDING THE WATER AND DRY MIX TOGETHER AND SUBSEQUENTLY GRANULATING THE DAMP MIX INTO A POWDER; FOURTH, COMPRESSING THE GRANULATING DAMP
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |