US3105142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Inductosyn Corp
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Filing: 1961-05-10
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Granted: 1963-09-24
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Expires: 1981-05-10
Abstract
No abstract record available.
Inventors
- 👤 Robert W Tripp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:57
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/06; H03M1/0617; H03M1/0675; H03M1/069; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/408; G05B19/4093; G05B2219/00; G05B2219/30; G05B2219/33; G05B2219/33268; G05B2219/50; G05B2219/50019; H03M1/66; H03M1/665; H03M1/68; H03M1/82; Y; Y02; Y02P; Y02P90/00; Y02P90/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A DIGITAL-TO-ANALOG CONVERTER COMPRISING A FIRST MEANS FOR SUPPLYING A DIGITAL INPUT IN TERMS OF TRAVEL OF A DRIVEN ELEMENT, A SECOND MEANS FOR SUPPLYING A DIGITAL INPUT IN TERMS OF TRAVEL OF SAID ELEMENT, A ROTARY SWITCH, SAID SWITCH HAVING A SHAFT UNDER CONTROL OF BOTH OF SAID FIRST AND SECOND MEANS TO OPERATE TO POSITIONS CORRESPONDING TO THE SUM OF SAID FIRST AND SECOND DIGITAL INPUTS, A DATA ELEMENT HAVING RELATIVELY MOVABLE AND FIXED MEMBERS, ONE OF SAID MEMBERS HAVING INPUT WINDINGS WITH A GEOMETRICAL SPACING, SAID ROTARY SWITCH PROVIDING TO SAID INPUT WINDINGS ADJUSTABLE AMOUNTS OF INPUT VOLTAGE HAVING A TRIGONOMETRICAL RELATION CORRESPONDING TO SAID GEOMETRICAL SPACING.
Claim 2
Dependent Claim
110 words
A DIGITAL-TO-ANALOG CONVERTER COMPRISING A FIRST MEANS FOR SUPPLYING A DIGITAL INPUT IN TERMS OF TRAVEL OF A DRIVEN ELEMENT, A SECOND MEANS FOR SUPPLYING A DIGITAL INPUT IN TERMS OF TRAVEL OF SAID ELEMENT, A ROTARY SWITCH, SAID SWITCH HAVING A SHAFT UNDER CONTROL OF BOTH OF SAID FIRST AND SECOND MEANS TO OPERATE TO POSITIONS CORRESPONDING TO THE SUM OF SAID FIRST AND SECOND DIGITAL INPUTS, A DATA ELEMENT HAVING RELATIVELY MOVABLE AND FIXED MEMBERS, ONE OF SAID MEMBERS HAVING INPUT WINDINGS WITH A GEOMETRICAL SPACING, SAID ROTARY SWITCH PROVIDING TO SAID INPUT WINDINGS ADJUSTABLE AMOUNTS OF INPUT VOLTAGE HAVING A TRIGONOMETRICAL RELATION CORRESPONDING TO SAID GEOMETRICAL SPACING.
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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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |