Patent US3207502A successfully refreshed from Google Patents.
US3207502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operator control
Assignee: Consolidated Electronics Industries Corp
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Filing: 1963-06-12
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Granted: 1965-09-21
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Expires: 1983-06-12
Abstract
No abstract record available.
Inventors
- 👤 Richard D Houk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:25
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/40; E05F15/41; E05Y; E05Y2400/00; E05Y2400/10; E05Y2400/52; E05Y2400/53; E05Y2400/54; E05Y2400/55; E05Y2400/552; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18832
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
191 words
IN A DOOR MECHANISM FOR A DOOR TO BE OPENED AND HAVING AN UNBALANCED FORCE RESISTING SUCH OPENING EFFORT, A DOOR OPERATOR COMPRISING, IN COMBINATION, A MOTOR, A ONE-WAY CLUTCH HAVING FIRST AND SECOND PARTS, A DRIVE TRAIN CONNECTING SAID FIRST CLUTCH PART TO SAID MOTOR AND SAID SECOND CLUTCH PART TO SAID DOOR, DRIVE THROUGH SAID CLUTCH BEING FROM SAID FIRST TO SAID SECOND PART IN A FIRST ROTATIONAL DIRECTION AND FROM SAID SECOND TO SAID FIRST PART IN A SECOND ROTATIONAL DIRECTION, CIRCUIT MEANS TO CONNECT SAID MOTOR FOR DRIVE OF SAID CLUTCH FIRST PART IN SAID FIRST ROTATIONAL DIRECTION FOR DOOR OPENING MOVEMENTS AND FOR DRIVE OF SAID CLUTCH FIRST PART IN THE OPPOSITE ROTATIONAL DIRECTION FOR DOOR CLOSING MOVEMENTS WITH SAID UNBALANCED FORCE ON THE DOOR DRIVING SAID SECOND PART IN SAID OPPOSITE ROTATIONAL DIRECTION WITH SAID MOTOR ACTING AS A RETARDING FORCE, OBSTRUCTION TO CLOSING MOVEMENT OF SAID DOOR RETARDING SAID SECOND PART RELATIVE TO SAID FIRST PART AND THUS CAUSING SLIPPAGE THEREBETWEEN, AND MEANS RESPONSIVE TO SAID SLIPPAGE OF SAID CLUTCH PARTS TO EFFECT CESSATION OF DRIVING OF SAID FIRST CLUTCH PART FROM SAID MOTOR.
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) | 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 |