Patent US4175014A successfully refreshed from Google Patents.
US3406484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operator mechanism
Assignee: Dover Corp
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Filing: 1966-12-22
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Granted: 1968-10-22
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Expires: 1986-12-22
Abstract
No abstract record available.
Inventors
- 👤 Atkey Richard Edwin
- 👤 Jaseph Lawrence Flower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:54
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/632; E05F15/649; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A POWERED OPERATOR FOR DOORS AND THE LIKE ADAPTED TO SELECTIVELY MOVE A DOOR BETWEEN A PLURALITY OF DIFFERENT POSITIONS RELATIVE TO A FRAME, THE COMBINATION COMPRISING AN ELONGATED RIGID OPERATOR ARM PIVOTALLY MOUNTED ABOUT A FIRST FIXED REFERENCE POINT ON THE FRAME AND HAVING AN END SPACED APART FROM SAID FIRST FIXED REFERENCE POINT AND COUPLED TO THE DOOR FOR CONTROLLING THE POSITION OF THE DOOR AS A FUNCTION OF THE ANGULAR DISPLACEMENT OF SAID OPERATOR ARM ABOUT SAID FIRST FIXED REFERENCE POINT, A SLIDER ELEMENT SLIDABLY MOUNTED ON SAID OPERATOR ARM FOR SLIDING ENGAGEMENT THEREWITH INTERMEDIATE SAID FIRST FIXED REFERENCE POINT AND SAID OPERATOR ARM END, AND A DRIVING ELEMENT ADAPTED TO BE ROTATABLY DRIVEN ABOUT A SECOND FIXED REFERENCE POINT SPACED A PREDETERMINED DISTANCE FROM SAID FIRST FIXED REFERENCE POINT, SAID DRIVING ELEMENT BEING PIVOTALLY COUPLED TO SAID SLIDER ELEMENT FOR CONTROLLING THE ANGULAR DISPLACEMENT OF SAID OPERATOR ARM.
Claim 2
Dependent Claim
153 words
IN A POWERED OPERATOR FOR DOORS AND THE LIKE ADAPTED TO SELECTIVELY MOVE A DOOR BETWEEN A PLURALITY OF DIFFERENT POSITIONS RELATIVE TO A FRAME, THE COMBINATION COMPRISING AN ELONGATED RIGID OPERATOR ARM PIVOTALLY MOUNTED ABOUT A FIRST FIXED REFERENCE POINT ON THE FRAME AND HAVING AN END SPACED APART FROM SAID FIRST FIXED REFERENCE POINT AND COUPLED TO THE DOOR FOR CONTROLLING THE POSITION OF THE DOOR AS A FUNCTION OF THE ANGULAR DISPLACEMENT OF SAID OPERATOR ARM ABOUT SAID FIRST FIXED REFERENCE POINT, A SLIDER ELEMENT SLIDABLY MOUNTED ON SAID OPERATOR ARM FOR SLIDING ENGAGEMENT THEREWITH INTERMEDIATE SAID FIRST FIXED REFERENCE POINT AND SAID OPERATOR ARM END, AND A DRIVING ELEMENT ADAPTED TO BE ROTATABLY DRIVEN ABOUT A SECOND FIXED REFERENCE POINT SPACED A PREDETERMINED DISTANCE FROM SAID FIRST FIXED REFERENCE POINT, SAID DRIVING ELEMENT BEING PIVOTALLY COUPLED TO SAID SLIDER ELEMENT FOR CONTROLLING THE ANGULAR DISPLACEMENT OF SAID OPERATOR ARM.
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) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |