Patent US3130377A successfully refreshed from Google Patents.
US3354311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fringe movement detector including dual photocells
Assignee: Boeing Co
•
Filing: 1965-08-23
•
Granted: 1967-11-21
•
Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 Vali Victor
- 👤 Reuben S Krogstad
- 👤 Robert W Moss
- 👤 Ronald L Hagman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:35
CPC Classifications
G; G01; G01B; G01B9/00; G01B9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A SYSTEM FOR DETECTING RELATIVE MOVEMENT BETWEEN TWO POINTS COMPRISING IN COMBINATION: AN INTERFEROMETER INCLUDING FIRST AND SECOND MIRRORS RESPECTIVELY SECURED TO SAID POINTS AND INCLUDING MEANS PROVIDING AN INTEFERENCE PATTERN OF RADIANT ENERGY REFLECTED FROM SAID MIRRORS WITH THE DISPLACEMENT OF SAID PATTERN BEING PROPORTIONAL TO RELATIVE MOVEMENT BETWEEN SAID POINTS; RADIANT ENERGY DETECTION MEANS POSITIONED WITH RESPECT TO SAID PATTERN TO PROVIDE FIRST AND SECOND SIGNALS RESPECTIVELY PROPORTIONAL TO THE INTENSITY OF FIRST AND SECOND PREDETERMINED PORTIONS OF SAID PATTERN; MOVABLE SUPPORT MEANS HOLDING SAID DETECTION MEANS FOR MOVEMENT; AND MEANS RESPONSIVE TO SAID FIRST AND SECOND SIGNALS TO PROVIDE AN OUTPUT SIGNAL HAVING AN AMPLITUDE PROPORTIONAL TO THE DISPLACEMENT OF SAID PATTERN INCLUDING DRIVE MEANS COUPLED WITH SAID SUPPORT MEANS AND RESPONSIVE TO SAID FIRST AND SECOND SIGNALS TO MOVE SAID SUPPORT MEANS IN A DIRECTION TO FOLLOW DISPLACEMENT OF SAID PATTERN, AND SUPPORT RETURN MEANS RETURNING SAID SUPPORT MEANS TO AN INITIAL POSITION AFTER SAID PATTERN AND SUPPORT MEANS HAVE UNDERGONE A PREDETERMINED EXTENT OF MOVEMENT.
Claim 2
Independent Claim
170 words
A SYSTEM FOR DETECTING RELATIVE MOVEMENT BETWEEN TWO POINTS COMPRISING IN COMBINATION: AN INTERFEROMETER INCLUDING FIRST AND SECOND MIRRORS RESPECTIVELY SECURED TO SAID POINTS AND INCLUDING MEANS PROVIDING AN INTEFERENCE PATTERN OF RADIANT ENERGY REFLECTED FROM SAID MIRRORS WITH THE DISPLACEMENT OF SAID PATTERN BEING PROPORTIONAL TO RELATIVE MOVEMENT BETWEEN SAID POINTS; RADIANT ENERGY DETECTION MEANS POSITIONED WITH RESPECT TO SAID PATTERN TO PROVIDE FIRST AND SECOND SIGNALS RESPECTIVELY PROPORTIONAL TO THE INTENSITY OF FIRST AND SECOND PREDETERMINED PORTIONS OF SAID PATTERN; MOVABLE SUPPORT MEANS HOLDING SAID DETECTION MEANS FOR MOVEMENT; AND MEANS RESPONSIVE TO SAID FIRST AND SECOND SIGNALS TO PROVIDE AN OUTPUT SIGNAL HAVING AN AMPLITUDE PROPORTIONAL TO THE DISPLACEMENT OF SAID PATTERN INCLUDING DRIVE MEANS COUPLED WITH SAID SUPPORT MEANS AND RESPONSIVE TO SAID FIRST AND SECOND SIGNALS TO MOVE SAID SUPPORT MEANS IN A DIRECTION TO FOLLOW DISPLACEMENT OF SAID PATTERN, AND SUPPORT RETURN MEANS RETURNING SAID SUPPORT MEANS TO AN INITIAL POSITION AFTER SAID PATTERN AND SUPPORT MEANS HAVE UNDERGONE A PREDETERMINED EXTENT OF MOVEMENT.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |