US3230799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stud tensioner
Assignee: Babcock and Wilcox Co
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Filing: 1963-10-23
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Granted: 1966-01-25
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Vytautas K Maciulaitis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:31
CPC Classifications
B; B25; B25B; B25B29/00; B25B29/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
IN A STUD TENSIONER FOR A STUD HAVING AN EXPOSED PORTION OF PREDETERMINED LENGTH, AN ANNULAR PISTON HAVING AN UPRIGHT PORTION AND A PISTON PORTION WITH A TOTAL HEIGHT SUBSTANTIALLY LESS SAID PREDETERMINED LENGTH, MEANS FOR MOUNTING THE LOWER END OF SAID UPRIGHT PORTION ON THE PORTION OF A FLANGE SURROUNDING A STUD TO BE TENSIONED, AN ANNULAR CYLINDER SURROUNDING THE PISTON PORTION OF SAID PISTON AND HAVING ANNULAR INNER AND OUTER WALLS WITHIN WHICH THE PISTON PORTION IS DISPOSED, THE INWARDLY FACING SURFACE OF SAID INNER WALL HAVING AN UPWARD AND OUTWARD FLARE, AND A NUT HAVING A WALL PORTION WITH A THREADED INNER SURFACE ENGAGEABLE WITH SAID STUD AND A TAPERED OUTER SURFACE COMPLEMENTARY TO SAID FLARED SURFACE, SAID CYLINDER, PISTON PORTION OF SAID PISTON AND WALL PORTION OF SAID NUT BEING SUBSTANTIALLY WITHIN PARALLEL PLANES DEFINING THE LIMITS OF THAT PORTION OF THE STUD THREAD ENGAGED BY SAID NUT, FLUID PRESSURE MEANS FOR MOVING SAID CYLINDER UPWARDLY AND CAUSING SAID FLARED CYLINDER SURFACE TO EXERT RADIALLY INWARD AND AXIALLY UPWARD FORCES ON SAID TAPERED NUT SURFACE.
Claim 2
Dependent Claim
179 words
IN A STUD TENSIONER FOR A STUD HAVING AN EXPOSED PORTION OF PREDETERMINED LENGTH, AN ANNULAR PISTON HAVING AN UPRIGHT PORTION AND A PISTON PORTION WITH A TOTAL HEIGHT SUBSTANTIALLY LESS SAID PREDETERMINED LENGTH, MEANS FOR MOUNTING THE LOWER END OF SAID UPRIGHT PORTION ON THE PORTION OF A FLANGE SURROUNDING A STUD TO BE TENSIONED, AN ANNULAR CYLINDER SURROUNDING THE PISTON PORTION OF SAID PISTON AND HAVING ANNULAR INNER AND OUTER WALLS WITHIN WHICH THE PISTON PORTION IS DISPOSED, THE INWARDLY FACING SURFACE OF SAID INNER WALL HAVING AN UPWARD AND OUTWARD FLARE, AND A NUT HAVING A WALL PORTION WITH A THREADED INNER SURFACE ENGAGEABLE WITH SAID STUD AND A TAPERED OUTER SURFACE COMPLEMENTARY TO SAID FLARED SURFACE, SAID CYLINDER, PISTON PORTION OF SAID PISTON AND WALL PORTION OF SAID NUT BEING SUBSTANTIALLY WITHIN PARALLEL PLANES DEFINING THE LIMITS OF THAT PORTION OF THE STUD THREAD ENGAGED BY SAID NUT, FLUID PRESSURE MEANS FOR MOVING SAID CYLINDER UPWARDLY AND CAUSING SAID FLARED CYLINDER SURFACE TO EXERT RADIALLY INWARD AND AXIALLY UPWARD FORCES ON SAID TAPERED NUT SURFACE.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |