Patent US2951817A successfully refreshed from Google Patents.
US2951817A
Expired / Lapsed
US
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Variable resistance material
Assignee: Individual
•
Filing: 1959-07-28
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Granted: 1960-09-06
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Expires: 1979-07-28
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:07
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/10; H01C10/106; H01B; H01B1/00; H01B1/20; H01B1/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
VARIABLE RESISTANCE MATERIAL CONSISTING ESSENTIALLY OF A SOLID BODY OF ELASTOMERIC POLYVINYL CHLORIDE WITH A GRANULAR FILLER DISPERSED THEREIN WITH THE GRANULES IN NONCONTACTING RELATION, SAID FILLER BEING SELECTED FROM THE GROUP CONSISTING OF PRECIPITATED MANGANESE DIOXIDE AND MICROPHONE CARBON GRANULES PRESENT IN A QUANTITY OF FROM ABOUT FIVE TIMES THE WEIGHT OF THE POLYVINYL CHLORIDE TO ABOUT ONE-HALF THE WEIGHT THEREOF, SUCH QUANTITIES BEING MATERIALLY LESS THAN THE AMOUNT NECESSARY TO RENDER SAID BODY MECHANICALLY RIGID.
Claim 2
Dependent Claim
77 words
VARIABLE RESISTANCE MATERIAL CONSISTING ESSENTIALLY OF A SOLID BODY OF ELASTOMERIC POLYVINYL CHLORIDE WITH A GRANULAR FILLER DISPERSED THEREIN WITH THE GRANULES IN NONCONTACTING RELATION, SAID FILLER BEING SELECTED FROM THE GROUP CONSISTING OF PRECIPITATED MANGANESE DIOXIDE AND MICROPHONE CARBON GRANULES PRESENT IN A QUANTITY OF FROM ABOUT FIVE TIMES THE WEIGHT OF THE POLYVINYL CHLORIDE TO ABOUT ONE-HALF THE WEIGHT THEREOF, SUCH QUANTITIES BEING MATERIALLY LESS THAN THE AMOUNT NECESSARY TO RENDER SAID BODY MECHANICALLY RIGID.
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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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |