US3175727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure for core holes
Assignee: Individual
•
Filing: 1963-03-22
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Granted: 1965-03-30
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Expires: 1983-03-22
Abstract
No abstract record available.
Inventors
- 👤 Piel Tillie Margaret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:19
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
THE COMBINATION WITH AN ENGINE CASTING HAVING INNER AND OUTER WALLS FORMING A PASSAGE FOR A LIQUID COOLANT, A CORE HOLE IN AN OUTER WALL OF SAID PASSAGE, SAID CORE HOLE BEING LOCATED AT A POSITION OF LIMITED ACCESSIBILITY WHICH PREVENTS THE USE OF PLUG REPLACING TOOLS, AND A CUPSHAPED CORE PLUG HAVING A RIM WEDGE IN SAID CORE HOLE RIM-SIDE OUT; OF MEANS FOR REPAIRING A LEAK AT SAID CORE PLUG COMPRISING A REPAIR PLUG WITH A PLURALITY OF PARTS ADAPTED TO BE INSERTED WITHIN THE RIM OF SAID CUP-SHAPED CORE PLUG, A DEFORMABLE SEALING WASHER BETWEEN SAID PARTS OF SAID REPAIR PLUG, SAID WASHER HAVING ITS OUTER PERIPHERY EXPOSED AROUND AND ADJACENT TO THE OUTER PERIPHERY OF SAID RIGID PARTS AND SAID PARTS BEING SUBSTANTIALLY MORE RIGID THAN SAID WASHER, AND MEANS TO CLAMP SAID MORE RIGID PARTS ON OPPOSITE SIDES OF SAID SEALING
Claim 2
Dependent Claim
146 words
THE COMBINATION WITH AN ENGINE CASTING HAVING INNER AND OUTER WALLS FORMING A PASSAGE FOR A LIQUID COOLANT, A CORE HOLE IN AN OUTER WALL OF SAID PASSAGE, SAID CORE HOLE BEING LOCATED AT A POSITION OF LIMITED ACCESSIBILITY WHICH PREVENTS THE USE OF PLUG REPLACING TOOLS, AND A CUPSHAPED CORE PLUG HAVING A RIM WEDGE IN SAID CORE HOLE RIM-SIDE OUT; OF MEANS FOR REPAIRING A LEAK AT SAID CORE PLUG COMPRISING A REPAIR PLUG WITH A PLURALITY OF PARTS ADAPTED TO BE INSERTED WITHIN THE RIM OF SAID CUP-SHAPED CORE PLUG, A DEFORMABLE SEALING WASHER BETWEEN SAID PARTS OF SAID REPAIR PLUG, SAID WASHER HAVING ITS OUTER PERIPHERY EXPOSED AROUND AND ADJACENT TO THE OUTER PERIPHERY OF SAID RIGID PARTS AND SAID PARTS BEING SUBSTANTIALLY MORE RIGID THAN SAID WASHER, AND MEANS TO CLAMP SAID MORE RIGID PARTS ON OPPOSITE SIDES OF SAID SEALING
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |