US3238523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitive encoder
Assignee: General Precision Inc
•
Filing: 1962-02-21
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Granted: 1966-03-01
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Expires: 1982-02-21
Abstract
No abstract record available.
Inventors
- 👤 Masel Marvin
- 👤 Woerner Andrew
- 👤 Carl L Vrabel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:54
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
AN ENCODER COMPRISING MEANS DEFINING A TRACK HAVING A SET OF FIRST CONDUCTING SEGMENTS SPACED ALONG SAID TRACK AND A SET OF SECOND CONDUCTING SEGMENTS SPACED ALONG SAID TRACK AT POSITIONS BETWEEN SAID FIRST CONDUCTING INSULATED FROM SAID FIRST SEGMENTS, A THIRD CONDUCTING SEGMENT ADJACENT SAID TRACK SLIGHTLY SPACED THEREFROM AND MOVABLE WITH RESPECT TO SAID TRACK ALONG SAID TRACK, AND MEANS TO COMPARE THE CAPACITANCE BETWEEN SAID THIRD SEGMENT AND SAID FIRST SEGMENTS WITH THE CAPACITANCE BETWEEN SAID THIRD SEGMENT AND SAID SECOND SEGMENTS.
Claim 2
Dependent Claim
85 words
AN ENCODER COMPRISING MEANS DEFINING A TRACK HAVING A SET OF FIRST CONDUCTING SEGMENTS SPACED ALONG SAID TRACK AND A SET OF SECOND CONDUCTING SEGMENTS SPACED ALONG SAID TRACK AT POSITIONS BETWEEN SAID FIRST CONDUCTING INSULATED FROM SAID FIRST SEGMENTS, A THIRD CONDUCTING SEGMENT ADJACENT SAID TRACK SLIGHTLY SPACED THEREFROM AND MOVABLE WITH RESPECT TO SAID TRACK ALONG SAID TRACK, AND MEANS TO COMPARE THE CAPACITANCE BETWEEN SAID THIRD SEGMENT AND SAID FIRST SEGMENTS WITH THE CAPACITANCE BETWEEN SAID THIRD SEGMENT AND SAID SECOND SEGMENTS.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |