Patent US2747809A successfully refreshed from Google Patents.
US2747809A
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Bobbin chuck
Assignee: EIDP Inc
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Filing: 1954-01-06
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Granted: 1956-05-29
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Expires: 1974-01-06
Abstract
No abstract record available.
Inventors
- 👤 Selby Donald William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:21
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/40; B65H54/54; B65H54/543; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A BOBBIN CHUCK WHICH COMPRISES A PLURALITY OF RADIALLY EXTENDING AXIAL VANES FOR SUPPORTING A BOBBIN CORE, A CHUCK HOUSING FOR SUPPORTING SAID VANES FOR RADIAL MOVEMENT INWARD AT THE URGING OF RESILIENT MEMBERS EXTENDING BETWEEN SAID HOUSING AND SAID VANES AND OUTWARD AGAINST THE INSIDE OF A BOBBIN CORE AT THE URGING OF RESILIENT RINGS CONTAINED WITHIN SAID HOUSING UNDER THE ENDS OF SAID VANES AND CARRIED ON A GROOVED MEMBER PROVIDED WITH V-SHAPED GROOVES OF ADJUSTABLE SIZE FOR RETAINING SAID RINGS IN POSITION AND FOR FORCING SAID RINGS OUTWARDLY WHEN THE WIDTH OF SAID GROOVES IS REDUCED.
Claim 2
Dependent Claim
99 words
A BOBBIN CHUCK WHICH COMPRISES A PLURALITY OF RADIALLY EXTENDING AXIAL VANES FOR SUPPORTING A BOBBIN CORE, A CHUCK HOUSING FOR SUPPORTING SAID VANES FOR RADIAL MOVEMENT INWARD AT THE URGING OF RESILIENT MEMBERS EXTENDING BETWEEN SAID HOUSING AND SAID VANES AND OUTWARD AGAINST THE INSIDE OF A BOBBIN CORE AT THE URGING OF RESILIENT RINGS CONTAINED WITHIN SAID HOUSING UNDER THE ENDS OF SAID VANES AND CARRIED ON A GROOVED MEMBER PROVIDED WITH V-SHAPED GROOVES OF ADJUSTABLE SIZE FOR RETAINING SAID RINGS IN POSITION AND FOR FORCING SAID RINGS OUTWARDLY WHEN THE WIDTH OF SAID GROOVES IS REDUCED.
References Cited (Backward Citations)
US2381301A
Cited
US2365980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |