Patent US3114541A successfully refreshed from Google Patents.
US3114541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable door control mechanism
Assignee: Individual
•
Filing: 1960-08-19
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Granted: 1963-12-17
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Expires: 1980-08-19
Abstract
No abstract record available.
Inventors
- 👤 Charles F Coffey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:29
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/22; E05F3/224; E05F15/00; E05F15/50; E05F15/53; E05F15/60; E05F15/603; E05F15/611; E05F15/63; E05F3/04; E05F3/06; E05F3/10; E05F3/102; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/404; E05Y2201/41; E05Y2201/422; E05Y2201/43; E05Y2201/434; E05Y2201/60; E05Y2201/622; E05Y2201/644; E05Y2201/646; E05Y2201/656; E05Y2400/00; E05Y2400/10; E05Y2400/30; E05Y2400/3013; E05Y2400/3015; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A DOOR CONTROL INCLUDING A HOUSING, A DOOR OPERATOR OF THE TYPE HAVING FLUID PRESSURE DOOR OPENING MEANS AND SPRING CLOSING MEANS MOUNTED WITHIN SAID HOUSING, A ROLLER CHAIN COOPERATIVELY CONNECTING THE DOOR OPENING AND CLOSING MEANS OF SAID OPERATOR, MEANS OPERATIVELY CONNECTING SAID DOOR OPERATOR WITH A DOOR, MEANS INTEGRAL WITH SAID ROLLER CHAIN FOR LIMITING THE OPENING AND CLOSING MOVEMENTS OF SAID DOOR, MEANS INTEGRAL WITH SAID CONNECTING MEANS FOR REMOVABLY EXERTING LEVERAGE UPON SAID SPRING CLOSING MEANS TO TENSION THE SAME, AND MEANS FOR ACTUATING SAID DOOR OPERATOR.
Claim 2
Dependent Claim
91 words
A DOOR CONTROL INCLUDING A HOUSING, A DOOR OPERATOR OF THE TYPE HAVING FLUID PRESSURE DOOR OPENING MEANS AND SPRING CLOSING MEANS MOUNTED WITHIN SAID HOUSING, A ROLLER CHAIN COOPERATIVELY CONNECTING THE DOOR OPENING AND CLOSING MEANS OF SAID OPERATOR, MEANS OPERATIVELY CONNECTING SAID DOOR OPERATOR WITH A DOOR, MEANS INTEGRAL WITH SAID ROLLER CHAIN FOR LIMITING THE OPENING AND CLOSING MOVEMENTS OF SAID DOOR, MEANS INTEGRAL WITH SAID CONNECTING MEANS FOR REMOVABLY EXERTING LEVERAGE UPON SAID SPRING CLOSING MEANS TO TENSION THE SAME, AND MEANS FOR ACTUATING SAID DOOR OPERATOR.
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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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |