Patent US3207904A successfully refreshed from Google Patents.
US3207904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optical article positioning system
Assignee: AT&T Inc
•
Filing: 1962-04-09
•
Granted: 1965-09-21
•
Expires: 1982-04-09
Abstract
No abstract record available.
Inventors
- 👤 Heinz Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:57
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/50; H10P72/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
308 words
IN AN ELECTRO-OPTICAL FOR POSITIONING AN ARTICLE IN A PRESELECTED TRANSLATIONAL AND ROTARY ORIENTATION WITH RESPECT TO FIRST AND SECOND COORDINATE AXES, THE ARTICLE BEING PROVIDED WITH A SURFACE HAVING A LIGHT REFLECTING CHARACTERISTIC CONTRASTING WITH THAT OF THE ARTICLE, THE COMBINATION OF: MEANS FOR ILLUMINATING THE ARTICLE TO PROJECT AN ENLARGED, REFLECTED IMAGE OF THE ARTICLE; A LIGHT-RECEIVING COMPARTMENT HAVING FOUR WINDOWS ARRANGED TO VIEW THE PROJECTED IMAGE, SAID WINDOWS BEING SYMMETRICALLY DISPOSED ONE TO EACH QUADRANT FORMED BY THE FIRST AND SECOND AXES SUCH THAT, WHEN THE ARTICLE IS IN SAID PRESELECTED ORIENTATION, LIGHT REFLECTED FROM A DISTINCT PERIPHERAL PORTION OF THE SURFACE PASSES THROUGH EACH WINDOW; A PHOTOELECTRIC ELEMENT ASSOCIATED WITH EACH WINDOW FOR RECEIVING LIGHT PASSING THROUGH THE ASSOCIATED WINDOW TO GENERATE AN OUTPUT; SIX MIXING MEANS FOR ADDING THE OUTPUTS TWO AT A TIME IN DIFFERENT COMBINATIONS TO PRODUVE A PLURALITY OF SIGNALS; A FIRST DIFFERENTIAL AMPLIFIER FOR SUBTRACTING THE SIGNALS PRODUCED BY THE ADDING MEANS WHICH ADD THE OUTPUTS OF THE ELEMENTS ASSOCIATED WITH ADJACENT WINDOWS POSITIONED PARALLEL TO THE FIRST COORDINATE AXISF FIRST ARTICLE POSITIONING MEANS RESPONSIVE TO THE OUTPUT OF SAID FIRST DIFFERENTIAL AMPLIFIER FOR TRANSLATING THE ARTICLE PERPENDICULAR TO THE FIRST COORDINATE AXIS; A SECOND DIFFERENTIAL AMPLIFIER FOR SUBTRACTING THE SIGNALS OF THE ADDING MEANS WHICH ADD THE OUTPUTS OF THE ELEMENTS ASSOCIATED WITH ADJACENT WINDOWS POSITIONED PARALLEL TO THE SECOND COORDINAT AXIS; SECOND ARTICLE POSITIONING MEANS RESPONSIVE TO THE OUTPUT OF SAID SECOND DIFFERENTIAL AMPLIFIER FOR TRANSLAT ING THE ARTICLE PARALLEL TO THE FIRST COORDINATE AXIS: A THIRD DIFFERENTIAL AMPLIFIER FOR SUBTRACTING THE SIGNALS OF THE ADDING MEANS WHICH ADD THE OUTPUTS OF THE ELEMENTS ASSOCIATED WITH DIAGONALLY OPPOSITE WINDOWS; AND THIRD ARTICLE POSITIONING MEANS RESPONSIVE TO THE OUTPUT OF SAID THIRD DIFFERENTIAL AMPLIFIER FOR ROTATING THE ARTICLE AROUND THE INTERSECTION OF THE FIRST AND SECOND COORDINATE AXIES.
Claim 2
Dependent Claim
308 words
IN AN ELECTRO-OPTICAL FOR POSITIONING AN ARTICLE IN A PRESELECTED TRANSLATIONAL AND ROTARY ORIENTATION WITH RESPECT TO FIRST AND SECOND COORDINATE AXES, THE ARTICLE BEING PROVIDED WITH A SURFACE HAVING A LIGHT REFLECTING CHARACTERISTIC CONTRASTING WITH THAT OF THE ARTICLE, THE COMBINATION OF: MEANS FOR ILLUMINATING THE ARTICLE TO PROJECT AN ENLARGED, REFLECTED IMAGE OF THE ARTICLE; A LIGHT-RECEIVING COMPARTMENT HAVING FOUR WINDOWS ARRANGED TO VIEW THE PROJECTED IMAGE, SAID WINDOWS BEING SYMMETRICALLY DISPOSED ONE TO EACH QUADRANT FORMED BY THE FIRST AND SECOND AXES SUCH THAT, WHEN THE ARTICLE IS IN SAID PRESELECTED ORIENTATION, LIGHT REFLECTED FROM A DISTINCT PERIPHERAL PORTION OF THE SURFACE PASSES THROUGH EACH WINDOW; A PHOTOELECTRIC ELEMENT ASSOCIATED WITH EACH WINDOW FOR RECEIVING LIGHT PASSING THROUGH THE ASSOCIATED WINDOW TO GENERATE AN OUTPUT; SIX MIXING MEANS FOR ADDING THE OUTPUTS TWO AT A TIME IN DIFFERENT COMBINATIONS TO PRODUVE A PLURALITY OF SIGNALS; A FIRST DIFFERENTIAL AMPLIFIER FOR SUBTRACTING THE SIGNALS PRODUCED BY THE ADDING MEANS WHICH ADD THE OUTPUTS OF THE ELEMENTS ASSOCIATED WITH ADJACENT WINDOWS POSITIONED PARALLEL TO THE FIRST COORDINATE AXISF FIRST ARTICLE POSITIONING MEANS RESPONSIVE TO THE OUTPUT OF SAID FIRST DIFFERENTIAL AMPLIFIER FOR TRANSLATING THE ARTICLE PERPENDICULAR TO THE FIRST COORDINATE AXIS; A SECOND DIFFERENTIAL AMPLIFIER FOR SUBTRACTING THE SIGNALS OF THE ADDING MEANS WHICH ADD THE OUTPUTS OF THE ELEMENTS ASSOCIATED WITH ADJACENT WINDOWS POSITIONED PARALLEL TO THE SECOND COORDINAT AXIS; SECOND ARTICLE POSITIONING MEANS RESPONSIVE TO THE OUTPUT OF SAID SECOND DIFFERENTIAL AMPLIFIER FOR TRANSLAT ING THE ARTICLE PARALLEL TO THE FIRST COORDINATE AXIS: A THIRD DIFFERENTIAL AMPLIFIER FOR SUBTRACTING THE SIGNALS OF THE ADDING MEANS WHICH ADD THE OUTPUTS OF THE ELEMENTS ASSOCIATED WITH DIAGONALLY OPPOSITE WINDOWS; AND THIRD ARTICLE POSITIONING MEANS RESPONSIVE TO THE OUTPUT OF SAID THIRD DIFFERENTIAL AMPLIFIER FOR ROTATING THE ARTICLE AROUND THE INTERSECTION OF THE FIRST AND SECOND COORDINATE AXIES.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |