US3221213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position-indicating apparatus and ignition system employing same
Assignee: Individual
•
Filing: 1963-04-11
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Granted: 1965-11-30
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Expires: 1983-04-11
Abstract
No abstract record available.
Inventors
- 👤 John R Mckinney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:32
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/12; F02P7/00; F02P7/06; F02P7/067; F02P7/0675
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
APPARATUS FOR PRODUCING POSITION-INDICATING ELECTRICAL VARIATIONS, COMPRISING: A PIEZOELECTRIC ELEMENT; A BODY OF MAGNETIC MATERIAL ON SAID ELEMENT; MAGNETIC MEANS, AT LEAST A PART OF WHICH IS OF MAGNETIC MATERIAL AND MOVABLE RELATIVE TO SAID BODY THROUGH POSITIONS ADJACENT BUT SPACED FROM SAID BODY, FOR PRODUCING DIFFERENT MAGNETIC FORCES ON SAID BODY FOR DIFFERENT ONES OF SAID POSITIONS, THEREBY TO PRODUCE STRESSES ON SAID ELEMENT AND VOLTAGES THEREFROM INDICATIVE OF THE POSITION OF SAID PART OF SAID MEANS WITH RESPECT TO SAID BODY; AND MOTIVE MEANS FOR MOVING SAID PART RELATIVE TO SAID BODY THROUGH SAID POSITIONS ADJACENT SAID BODY; SAID MAGNETIC MEANS COMPRISING AN ELEMENT FOR PRODUCING A MAGNETIC FIELD AT SAID BODY AND A MEMBER ROTATABLE ADJACENT SAID BODY IN RESPONSE TO SAID MOTIVE MEANS FOR VARYING THE STRENGTH OF SAID MAGNETIC FIELD AS A FUNCTION OF THE ANGULAR POSITION OF SAID MEMBER WITH RESPECT TO SAID BODY.
Claim 2
Dependent Claim
150 words
APPARATUS FOR PRODUCING POSITION-INDICATING ELECTRICAL VARIATIONS, COMPRISING: A PIEZOELECTRIC ELEMENT; A BODY OF MAGNETIC MATERIAL ON SAID ELEMENT; MAGNETIC MEANS, AT LEAST A PART OF WHICH IS OF MAGNETIC MATERIAL AND MOVABLE RELATIVE TO SAID BODY THROUGH POSITIONS ADJACENT BUT SPACED FROM SAID BODY, FOR PRODUCING DIFFERENT MAGNETIC FORCES ON SAID BODY FOR DIFFERENT ONES OF SAID POSITIONS, THEREBY TO PRODUCE STRESSES ON SAID ELEMENT AND VOLTAGES THEREFROM INDICATIVE OF THE POSITION OF SAID PART OF SAID MEANS WITH RESPECT TO SAID BODY; AND MOTIVE MEANS FOR MOVING SAID PART RELATIVE TO SAID BODY THROUGH SAID POSITIONS ADJACENT SAID BODY; SAID MAGNETIC MEANS COMPRISING AN ELEMENT FOR PRODUCING A MAGNETIC FIELD AT SAID BODY AND A MEMBER ROTATABLE ADJACENT SAID BODY IN RESPONSE TO SAID MOTIVE MEANS FOR VARYING THE STRENGTH OF SAID MAGNETIC FIELD AS A FUNCTION OF THE ANGULAR POSITION OF SAID MEMBER WITH RESPECT TO SAID BODY.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |