US3190106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube bending mandrel
Assignee: H & H Engineering Co
•
Filing: 1961-12-22
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Granted: 1965-06-22
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Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Henry M Spates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:28
CPC Classifications
B; B21; B21D; B21D9/00; B21D9/01; B21D9/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A UNIVERSAL TUBE BENDING MANDREL COMPRISING A SERIES OF OUTER RING MEMBERS, AND A CORRESPONDING SERIES OF INNER BALL LINK MEMBERS CONNECTED TOGETHER IN END-TOEND RELATION, EACH LINK HAVING AN EXPANSIBLE HOLLOW FEMALE SOCKET END PORTION AT ONE END AND A SPHERICALLY SHAPED MALE END PORTION AT ITS OPPOSITE END FOR INTERLOCKING ENGAGEMENT IN THE HOLLOW FEMALE SOCKET END OF EACH LINK IN SUCCESSION, SAID FEMALE END PORTIONS BEING SIZED FOR DISPOSITION WITHIN SAID RING MEMBERS AND TO BE SECURED TO SAID MALE END PORTIONS BY SAID RING MEMBERS, AND LOCKING MEANS BETWEEN SAID FEMALE SOCKET END PORTIONS AND SAID RINGS FOR LOCKING SAID RING MEMBERS ON SAID FEMALE SOCKET END PORTION IN SPACED, AXIAL RELATION WHEREBY SAID RING MEMBERS ARE FREE TO BEND IN ANY DIRECTION WHILE MAINTAINING A CONSTANT DIAMETER.
Claim 2
Dependent Claim
132 words
A UNIVERSAL TUBE BENDING MANDREL COMPRISING A SERIES OF OUTER RING MEMBERS, AND A CORRESPONDING SERIES OF INNER BALL LINK MEMBERS CONNECTED TOGETHER IN END-TOEND RELATION, EACH LINK HAVING AN EXPANSIBLE HOLLOW FEMALE SOCKET END PORTION AT ONE END AND A SPHERICALLY SHAPED MALE END PORTION AT ITS OPPOSITE END FOR INTERLOCKING ENGAGEMENT IN THE HOLLOW FEMALE SOCKET END OF EACH LINK IN SUCCESSION, SAID FEMALE END PORTIONS BEING SIZED FOR DISPOSITION WITHIN SAID RING MEMBERS AND TO BE SECURED TO SAID MALE END PORTIONS BY SAID RING MEMBERS, AND LOCKING MEANS BETWEEN SAID FEMALE SOCKET END PORTIONS AND SAID RINGS FOR LOCKING SAID RING MEMBERS ON SAID FEMALE SOCKET END PORTION IN SPACED, AXIAL RELATION WHEREBY SAID RING MEMBERS ARE FREE TO BEND IN ANY DIRECTION WHILE MAINTAINING A CONSTANT DIAMETER.
References Cited (Backward Citations)
US2451717A
Cited
US2962077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |