US3268887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position sensing apparatus
Assignee: Electro Mechanical Research Inc
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Filing: 1963-08-22
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Granted: 1966-08-23
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Expires: 1983-08-22
Abstract
No abstract record available.
Inventors
- 👤 Sullivan Warren Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:31
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/487; H; H03; H03M; H03M1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A POSITION SENSING APPARATUS, A FIRST MEMBER HAVING A PLURALITY OF SUBSTANTIALLY EQUALLY SPACED MAGNETIC FLUX EMANATING AREAS, EACH OF SAID AREAS DEFINING A CONCENTRATION OF FLUX OF A PREDETERMINED POLARITY, AT LEAST ONE CORE MEMBER MOUNTED OPPOSITE SAID FIRST MEMBER, SAID CORE MEMBER COMPRISING A CLOSED LOOP MAGNETIC CIRCUIT AND BEING COMPOSED AT LEAST IN PART OF MAGNETIC MATERIAL HAVING AT LEAST TWO REMANENT STATES, AT LEAST A PORTION OF SAID CORE MEMBER BEING SUSCEPTIBLE OF BECOMING SUBSTANTIALLY SATURATED BY EACH OF SAID FLUX EMANATING AREAS DEPENDENT UPON THE RELATIVE POSITIONS OF SAID CORE MEMBER AND SAID FLUX EMANATING AREAS; SAID FIRST MEMBER AND SAID CORE MEMBER BEING SUSCEPTIBLE OF RELATIVE DISPLACEMENTS; FLUX INDUCING MEANS COUPLED WITH SAID CORE
Claim 2
Dependent Claim
121 words
IN A POSITION SENSING APPARATUS, A FIRST MEMBER HAVING A PLURALITY OF SUBSTANTIALLY EQUALLY SPACED MAGNETIC FLUX EMANATING AREAS, EACH OF SAID AREAS DEFINING A CONCENTRATION OF FLUX OF A PREDETERMINED POLARITY, AT LEAST ONE CORE MEMBER MOUNTED OPPOSITE SAID FIRST MEMBER, SAID CORE MEMBER COMPRISING A CLOSED LOOP MAGNETIC CIRCUIT AND BEING COMPOSED AT LEAST IN PART OF MAGNETIC MATERIAL HAVING AT LEAST TWO REMANENT STATES, AT LEAST A PORTION OF SAID CORE MEMBER BEING SUSCEPTIBLE OF BECOMING SUBSTANTIALLY SATURATED BY EACH OF SAID FLUX EMANATING AREAS DEPENDENT UPON THE RELATIVE POSITIONS OF SAID CORE MEMBER AND SAID FLUX EMANATING AREAS; SAID FIRST MEMBER AND SAID CORE MEMBER BEING SUSCEPTIBLE OF RELATIVE DISPLACEMENTS; FLUX INDUCING MEANS COUPLED WITH SAID CORE
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |