US3226710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog-digital converter
Assignee: Inductosyn Corp
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Filing: 1963-03-07
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Granted: 1965-12-28
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Expires: 1983-03-07
Abstract
No abstract record available.
Inventors
- 👤 Robert W Tripp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:15
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
AN ANALOG-DIGITAL CONVERTER COMPRISING (A) A POSITION-MEASURING TRANSFORMER HAVING (1) A VARIABLE MECHANICAL ANALOG INPUT AND (2) RELATIVELY MOVABLE MEMBERS, (3) ONE OF SAID MEMBERS HAVING POLYPHASE WINDINGS, (4) ANOTHER OF SAID MEMBERS HAVING A SINGLE PHASE WINDING FOR SUPPLYING A PHASE-SENSITIVE RELATIVE POSITION SIGNAL; (B) A TACHOMETER HAVING AS AN INPUT SAID VARIABLE MECHANICAL ANALOG INPUT, SAID TACHOMETER HAVING AN OUTPUT SIGNAL PROPORTIONAL TO THE VELOCITY OF SAID INPUT AND HAVING A SIGN RELATED TO THE DIRECTION OF MOTION OF SAID INPUT; (C) A CLOCK PULSE GENERATOR SUPPLYING PULSES TO (D) A FREQUENCY DIVIDER HAVING AN OUTPUT OF SUBHARMONIC FREQUENCY AS AN INPUT TO (E) A POLYPHASE GENERATOR HAVING AS OUTPUTS (1) POLYPHASE SIGNALS OF DIFFERENT TIME PHASE FOR INPUTS TO SAID POLYPHASE WINDINGS AND AN OUTPUT OF (2) A REFERENCE SIGNAL AS AN INPUT TO (F) A FIRST NULL CROSSING DETECTOR HAVING AN OUTPUT OF A (1) FIRST CONTROL SIGNAL; (G) A SCOND NULL CROSSING DETECTOR HAVING INPUTS OF
Claim 2
Dependent Claim
161 words
AN ANALOG-DIGITAL CONVERTER COMPRISING (A) A POSITION-MEASURING TRANSFORMER HAVING (1) A VARIABLE MECHANICAL ANALOG INPUT AND (2) RELATIVELY MOVABLE MEMBERS, (3) ONE OF SAID MEMBERS HAVING POLYPHASE WINDINGS, (4) ANOTHER OF SAID MEMBERS HAVING A SINGLE PHASE WINDING FOR SUPPLYING A PHASE-SENSITIVE RELATIVE POSITION SIGNAL; (B) A TACHOMETER HAVING AS AN INPUT SAID VARIABLE MECHANICAL ANALOG INPUT, SAID TACHOMETER HAVING AN OUTPUT SIGNAL PROPORTIONAL TO THE VELOCITY OF SAID INPUT AND HAVING A SIGN RELATED TO THE DIRECTION OF MOTION OF SAID INPUT; (C) A CLOCK PULSE GENERATOR SUPPLYING PULSES TO (D) A FREQUENCY DIVIDER HAVING AN OUTPUT OF SUBHARMONIC FREQUENCY AS AN INPUT TO (E) A POLYPHASE GENERATOR HAVING AS OUTPUTS (1) POLYPHASE SIGNALS OF DIFFERENT TIME PHASE FOR INPUTS TO SAID POLYPHASE WINDINGS AND AN OUTPUT OF (2) A REFERENCE SIGNAL AS AN INPUT TO (F) A FIRST NULL CROSSING DETECTOR HAVING AN OUTPUT OF A (1) FIRST CONTROL SIGNAL; (G) A SCOND NULL CROSSING DETECTOR HAVING INPUTS OF
References Cited (Backward Citations)
US3023959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |