Patent US3080878A successfully refreshed from Google Patents.
US3080878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric to pneumatic signal converting device
Assignee: Elsag Bailey Inc
•
Filing: 1959-09-15
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Granted: 1963-03-12
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Expires: 1979-09-15
Abstract
No abstract record available.
Inventors
- 👤 Miles O Dustin
- 👤 John C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:01
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/2013; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN AN ELECTRIC TO PNEUMATIC SIGNAL CONVERTING DEVICE, THE COMBINATION COMPRISING, A CASING, A FORCE BALANCE BEAM PIVOTALLY MOUNTED ON SAID CASING INTERMEDIATE THE ENDS THEREOF, ELECTRO-MAGNETIC MEANS RESPONSIVE TO A VARIABLE ELECTRICAL SIGNAL FOR APPLYING A FORCE TO ONE END OF SAID BEAM PROPORTIONAL TO THE MAGNITUDE OF THE ELECTRICAL SIGNAL TO EFFECT DISPLACEMENT OF SAID BEAM, MEANS INCLUDING A FLUID PRESSURE COUPLE ASSOCIATED WITH SAID BEAM RESPONSIVE TO DISPLACEMENT OF SAID BEAM TO ESTABLISH A PNEUMATIC OUTPUT PRESSURE SIGNAL, AN EXPANSIBLE BELLOWS MEMBER HAVING ONE END FIXED TO SAID CASING AND THE OTHER END THEREOF MOVABLE IN RESPONSE TO VARIATIONS IN SAID OUTPUT PRESSURE SIGNAL, A LEVER PIVOTALLY MOUNTED ON ONE END ON SAID CASING AND HAVING ITS MEDIAL PORTION IN ENGAGEMENT WITH SAID MOVABLE END OF SAID BELLOWS MEMBER, A FIRST SPRING ADJUSTABLY CONNECTED BETWEEN THE OTHER END OF SAID LEVER AND THE OTHER END OF SAID FORCE BALANCE BEAM, A SECOND SPRING HAVING ONE END FIXED TO SAID LEVER, A SECOND LEVER PIVOTALLY MOUNTED ON SAID CASING HAVING
Claim 2
Dependent Claim
172 words
IN AN ELECTRIC TO PNEUMATIC SIGNAL CONVERTING DEVICE, THE COMBINATION COMPRISING, A CASING, A FORCE BALANCE BEAM PIVOTALLY MOUNTED ON SAID CASING INTERMEDIATE THE ENDS THEREOF, ELECTRO-MAGNETIC MEANS RESPONSIVE TO A VARIABLE ELECTRICAL SIGNAL FOR APPLYING A FORCE TO ONE END OF SAID BEAM PROPORTIONAL TO THE MAGNITUDE OF THE ELECTRICAL SIGNAL TO EFFECT DISPLACEMENT OF SAID BEAM, MEANS INCLUDING A FLUID PRESSURE COUPLE ASSOCIATED WITH SAID BEAM RESPONSIVE TO DISPLACEMENT OF SAID BEAM TO ESTABLISH A PNEUMATIC OUTPUT PRESSURE SIGNAL, AN EXPANSIBLE BELLOWS MEMBER HAVING ONE END FIXED TO SAID CASING AND THE OTHER END THEREOF MOVABLE IN RESPONSE TO VARIATIONS IN SAID OUTPUT PRESSURE SIGNAL, A LEVER PIVOTALLY MOUNTED ON ONE END ON SAID CASING AND HAVING ITS MEDIAL PORTION IN ENGAGEMENT WITH SAID MOVABLE END OF SAID BELLOWS MEMBER, A FIRST SPRING ADJUSTABLY CONNECTED BETWEEN THE OTHER END OF SAID LEVER AND THE OTHER END OF SAID FORCE BALANCE BEAM, A SECOND SPRING HAVING ONE END FIXED TO SAID LEVER, A SECOND LEVER PIVOTALLY MOUNTED ON SAID CASING HAVING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |