Patent US3852384A successfully refreshed from Google Patents.
Patent US3101547A successfully refreshed from Google Patents.
US3101547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining the coordinates of a point
Assignee: Sinclair Research Inc
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Filing: 1961-05-31
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Granted: 1963-08-27
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Expires: 1981-05-31
Abstract
No abstract record available.
Inventors
- 👤 James A Westphal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:32
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
AN APPARATUS FOR DETERMINING THE COORDINATES OF A POINT ON A TWO DIMENSIONAL GRAPH WHICH COMPRISES A FIRST SHEET COMPOSED OF AN ELECTRICALLY CONDUCTIVE MATERIAL, A SECOND SHEET COMPOSED OF AN ELECTRICALLY CONDUCTIVE MATERIAL, AND AN INSULATING SHEET OF GREATER DIMENSION THAN SAID FIRST SHEET AND SAID SECOND SHEET COMPOSED OF AN ELECTRICALLY NON-CONDUCTIVE MATERIAL, SAID INSULATING SHEET DISPOSED BETWEEN SAID FIRST SHEET AND SAID SECOND SHEET THEREBY INSULATING SAID FIRST SHEET FROM SAID SECOND SHEET, SAID FIRST SHEET, SAID SECOND SHEET AND SAID INSULATING SHEET DISPOSED PARALLEL TO EACH OTHER, SAID FIRST SHEET HAVING TWO ELECTRODE MEANS POSITIONED IN SPACED-APART RELATIONSHIP AND IN CONTACT WITH SAID FIRST SHEET, SAID SECOND SHEET HAVING TWO ELECTRODE MEANS POSITIONED IN SPACED-APART RELATIONSHIP AND IN CONTACT WITH SAID SECOND SHEET, MEANS FOR IMPRESSING A VOLTAGE ACROSS THE ELECTRODE MEANS IN CONTACT WITH SAID FIRST SHEET, MEANS FOR IMPRESSING A VOLTAGE ACROSS THE ELECTRODE MEANS IN CONTACT WITH SAID SECOND SHEET, SAID FIRST SHEET AND SAID SECOND SHEET HAVING SUBSTANTIALLY GREATER ELECTRICAL RESISTANCE THAN THE ELECTRODE MEANS IN CONTACT THEREWITH, SAID FIRST SHEET AND SAID SECOND SHEET POSITIONED IN RELATION TO EACH OTHER SUCH THAT SAID ELECTRODE MEANS IN CONTACT WITH SAID FIRST SHEET ARE TRANSVERSE TO SAID ELECTRODE MEANS IN CONTACT WITH SAID SECOND SHEET.
Claim 2
Independent Claim
212 words
AN APPARATUS FOR DETERMINING THE COORDINATES OF A POINT ON A TWO DIMENSIONAL GRAPH WHICH COMPRISES A FIRST SHEET COMPOSED OF AN ELECTRICALLY CONDUCTIVE MATERIAL, A SECOND SHEET COMPOSED OF AN ELECTRICALLY CONDUCTIVE MATERIAL, AND AN INSULATING SHEET OF GREATER DIMENSION THAN SAID FIRST SHEET AND SAID SECOND SHEET COMPOSED OF AN ELECTRICALLY NON-CONDUCTIVE MATERIAL, SAID INSULATING SHEET DISPOSED BETWEEN SAID FIRST SHEET AND SAID SECOND SHEET THEREBY INSULATING SAID FIRST SHEET FROM SAID SECOND SHEET, SAID FIRST SHEET, SAID SECOND SHEET AND SAID INSULATING SHEET DISPOSED PARALLEL TO EACH OTHER, SAID FIRST SHEET HAVING TWO ELECTRODE MEANS POSITIONED IN SPACED-APART RELATIONSHIP AND IN CONTACT WITH SAID FIRST SHEET, SAID SECOND SHEET HAVING TWO ELECTRODE MEANS POSITIONED IN SPACED-APART RELATIONSHIP AND IN CONTACT WITH SAID SECOND SHEET, MEANS FOR IMPRESSING A VOLTAGE ACROSS THE ELECTRODE MEANS IN CONTACT WITH SAID FIRST SHEET, MEANS FOR IMPRESSING A VOLTAGE ACROSS THE ELECTRODE MEANS IN CONTACT WITH SAID SECOND SHEET, SAID FIRST SHEET AND SAID SECOND SHEET HAVING SUBSTANTIALLY GREATER ELECTRICAL RESISTANCE THAN THE ELECTRODE MEANS IN CONTACT THEREWITH, SAID FIRST SHEET AND SAID SECOND SHEET POSITIONED IN RELATION TO EACH OTHER SUCH THAT SAID ELECTRODE MEANS IN CONTACT WITH SAID FIRST SHEET ARE TRANSVERSE TO SAID ELECTRODE MEANS IN CONTACT WITH SAID SECOND SHEET.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |