US3166155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor operated fire doors with automatic door release
Assignee: Individual
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Filing: 1961-05-10
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Granted: 1965-01-19
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Expires: 1981-05-10
Abstract
No abstract record available.
Inventors
- 👤 Henry B Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:58
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/002; E05F1/006; A; A62; A62C; A62C2/00; A62C2/06; A62C2/18; E05F15/00; E05F15/60; E05F15/603; E05F15/632; E05F15/643; E05F1/02; E05F1/04; E05F1/046; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/214; E05Y2201/23; E05Y2201/244; E05Y2201/40; E05Y2201/404; E05Y2201/41; E05Y2201/50; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; E05Y2900/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
THE COMBINATION WITH A WALL HAVING A DOOR OPENING THEREIN, A MOUNTING TRACK TO BE SECURED ON A WALL ABOVE THE DOOR OPENING, AND A DOOR MOVABLE ON SAID TRACK INTO OPEN AND CLOSED POSITIONS, OF A MOTOR AND A CONNECTION BETWEEN IT AND SAID DOOR FOR OPENING AND CLOSING THE DOOR INCLUDING TWO PARTS THAT ARE NORMALLY CONNECTING TO EACH OTHER TO MOVE TOGETHER IN BOTH OF OPPOSITE DIRECTIONS BUT ARE SEPARABLE, A GUIDE TRACK ALONG WHICH ONE PART IS NORMALLY DRIVEN BY SAID MOTOR ALTERNATELY IN OPPOSITE DIRECTIONS WHILE THE OTHER PART IS CARRIED BY SAID DOOR TO OPEN AND CLOSE THE DOOR, RESPECTIVELY, UNDER CONTROL OF SAID MOTOR, AUTOMATIC MEANS INCLUDING A HEAT-RESPONSIVE ELEMENT CONNECTED TO ONE OF SAID PARTS OF SAID CONNECTION TO SEPARATE SAID PARTS UPON RESPONSE OF SAID ELEMENT TO A TEMPERATURE RISE IN THE VICINITY OF SAID HEAT-RESPONSIVE ELEMENT AND THEREBY COMPLETELY DISCONNECT THE DOOR FROM THE MOTOR AND PREVENT OPERATION OF THE DOOR BY THE MOTOR
Claim 2
Dependent Claim
164 words
THE COMBINATION WITH A WALL HAVING A DOOR OPENING THEREIN, A MOUNTING TRACK TO BE SECURED ON A WALL ABOVE THE DOOR OPENING, AND A DOOR MOVABLE ON SAID TRACK INTO OPEN AND CLOSED POSITIONS, OF A MOTOR AND A CONNECTION BETWEEN IT AND SAID DOOR FOR OPENING AND CLOSING THE DOOR INCLUDING TWO PARTS THAT ARE NORMALLY CONNECTING TO EACH OTHER TO MOVE TOGETHER IN BOTH OF OPPOSITE DIRECTIONS BUT ARE SEPARABLE, A GUIDE TRACK ALONG WHICH ONE PART IS NORMALLY DRIVEN BY SAID MOTOR ALTERNATELY IN OPPOSITE DIRECTIONS WHILE THE OTHER PART IS CARRIED BY SAID DOOR TO OPEN AND CLOSE THE DOOR, RESPECTIVELY, UNDER CONTROL OF SAID MOTOR, AUTOMATIC MEANS INCLUDING A HEAT-RESPONSIVE ELEMENT CONNECTED TO ONE OF SAID PARTS OF SAID CONNECTION TO SEPARATE SAID PARTS UPON RESPONSE OF SAID ELEMENT TO A TEMPERATURE RISE IN THE VICINITY OF SAID HEAT-RESPONSIVE ELEMENT AND THEREBY COMPLETELY DISCONNECT THE DOOR FROM THE MOTOR AND PREVENT OPERATION OF THE DOOR BY THE MOTOR
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) | 1968-01-19 | 1968-07-20 | 1969-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-19 | 1972-07-20 | 1973-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-19 | 1976-07-20 | 1977-01-19 | $7700.00 | Window Closed / Lapsed |