Patent US4027534A successfully refreshed from Google Patents.
Patent US3086257A successfully refreshed from Google Patents.
US3086257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door swinging device which makes it possible to move heavy doors with a reduced effort
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1959-04-27
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Granted: 1963-04-23
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Expires: 1979-04-27
Abstract
Abstract 883,281. Doors. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 1, 1959 [May 6, 1958], No. 14935/59. Class 20(3) [Also in Groups XXV and XXXIV] Each member of a pair of heavy doors, e.g. for a vault containing radioactive material, is provided with a hydraulic system for lubricating the hinges and withdrawing the bolts (see Group XXV) and comprises a framework of U-beams 21-26 covered on both sides by sheet metal plates 27 and lined with cast lead 29. A dust seal 35 is provided.
Inventors
- 👤 Haguet Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:48
CPC Classifications
E; E05; E05D; E05D11/00; E05D11/02; E05F; E05F15/00; E05F15/50; E05F15/53; E06; E06B; E06B3/00; E06B3/32; E06B3/50; E06B3/52; E05D11/0081; E05Y; E05Y2800/00; E05Y2800/10; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN COMBINATION, A HEAVY DOOR, HINGE ASSEMBLIES FOR SAID DOOR, EACH OF SAID ASSEMBLIES COMPRISING A VERTICALLY DISPOSED HINGE PIN FIXED TO THE DOOR, A HOLLOW HINGE BEARING MEMBER SURROUNDING SAID PIN FIXED TO THE DOOR FRAME, FLUID SEALING MEANS BETWEEN SAID PIN AND THE TOP OF SAID MEMBER, MEANS FOR SUPPLYING A FLUID UNDER PRESSURE MOUNTED ON SAID DOOR, AND CONDUIT MEANS FROM SAID SUPPLY MEANS FOR SAID FLUID, AN AXIAL PASSAGE THROUGH SAID HINGE PIN AND MEANS CONNECTING SAID CONDUIT MEANS TO SAID PASSAGE.
Claim 2
Dependent Claim
86 words
IN COMBINATION, A HEAVY DOOR, HINGE ASSEMBLIES FOR SAID DOOR, EACH OF SAID ASSEMBLIES COMPRISING A VERTICALLY DISPOSED HINGE PIN FIXED TO THE DOOR, A HOLLOW HINGE BEARING MEMBER SURROUNDING SAID PIN FIXED TO THE DOOR FRAME, FLUID SEALING MEANS BETWEEN SAID PIN AND THE TOP OF SAID MEMBER, MEANS FOR SUPPLYING A FLUID UNDER PRESSURE MOUNTED ON SAID DOOR, AND CONDUIT MEANS FROM SAID SUPPLY MEANS FOR SAID FLUID, AN AXIAL PASSAGE THROUGH SAID HINGE PIN AND MEANS CONNECTING SAID CONDUIT MEANS TO SAID PASSAGE.
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |