US3213811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory brick
Assignee: Cullinan Refractories Ltd
•
Filing: 1962-10-03
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Granted: 1965-10-26
•
Expires: 1982-10-03
Abstract
No abstract record available.
Inventors
- 👤 Douglas M Cullinan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:11
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/145; F27D1/147; F23; F23M; F23M5/00; F23M5/06; F27D1/04; F27D1/06; F27D1/08; Y; Y10; Y10S; Y10S411/00; Y10S411/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
IN A FURNACE ROOF BLOCK INCLUDING A REFRACTORY BRICK PROVIDED WITH A RECESS IN THE UPPER PORTION THEREOF, AND A SHEET METAL HANGER FOR SUSPENDING THE BRICK IN THE ROOF WALL OF THE FURNACE, IN WHICH THE HANGER INCLUDES A SUSPENDED PORTION AND AN ATTACHMENT PORTION THE LATTER OF WHICH IS ATTACHED TO THE BODY OF THE BRICK IN SAID RECESS, THE IMPROVEMENT IN WHICH THE BRICK IS PROVIDED WITH A BORE EXTENDING INTO THE BODY OF THE BRICK THROUGH THE SURFACE OF A WALL OF THE RECESS, A HOLE IN THE ATTACHMENT PORTION OF THE SHEET METAL HANGER, AND A HANGERANCHORING MEANS COMPRISING A SLEEVE EXTENDING INTO THE BORE IN THE BODY OF THE BRICK, SAID SHEET METAL HANGER BEING PIVOTALLY MOUNTED ABOUT THE ANCHORING MEANS AND BEING PIVOTABLE TO FROM A POSITION IN WHICH IT IS LOCATED IN THE RECESS AND TO AND FROM A POSITION IN WHICH THE SUSPENDING PORTION OF THE SHEET METAL HANGER PROJECTS FROM THE RECESS IN THE BODY OF THE BRICK, SAID ANCHORING MEANS INCLUDING MEANS FOR WEDGING THE SLEEVE IN TIGHT ENGAGEMENT WITHE THE WALL OF THE BORE IN THE BODY OF THE BRICK.
Claim 2
Dependent Claim
192 words
IN A FURNACE ROOF BLOCK INCLUDING A REFRACTORY BRICK PROVIDED WITH A RECESS IN THE UPPER PORTION THEREOF, AND A SHEET METAL HANGER FOR SUSPENDING THE BRICK IN THE ROOF WALL OF THE FURNACE, IN WHICH THE HANGER INCLUDES A SUSPENDED PORTION AND AN ATTACHMENT PORTION THE LATTER OF WHICH IS ATTACHED TO THE BODY OF THE BRICK IN SAID RECESS, THE IMPROVEMENT IN WHICH THE BRICK IS PROVIDED WITH A BORE EXTENDING INTO THE BODY OF THE BRICK THROUGH THE SURFACE OF A WALL OF THE RECESS, A HOLE IN THE ATTACHMENT PORTION OF THE SHEET METAL HANGER, AND A HANGERANCHORING MEANS COMPRISING A SLEEVE EXTENDING INTO THE BORE IN THE BODY OF THE BRICK, SAID SHEET METAL HANGER BEING PIVOTALLY MOUNTED ABOUT THE ANCHORING MEANS AND BEING PIVOTABLE TO FROM A POSITION IN WHICH IT IS LOCATED IN THE RECESS AND TO AND FROM A POSITION IN WHICH THE SUSPENDING PORTION OF THE SHEET METAL HANGER PROJECTS FROM THE RECESS IN THE BODY OF THE BRICK, SAID ANCHORING MEANS INCLUDING MEANS FOR WEDGING THE SLEEVE IN TIGHT ENGAGEMENT WITHE THE WALL OF THE BORE IN THE BODY OF THE BRICK.
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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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |