Patent US3355121A successfully refreshed from Google Patents.
US3355121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible chuck for tubular core
Assignee: Sonoco Products Co
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Filing: 1966-10-13
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Granted: 1967-11-28
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Expires: 1986-10-13
Abstract
No abstract record available.
Inventors
- 👤 Leon C Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:56
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/246
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A CHUCK FOR TUBULAR CORE COMPRISING, IN COMBINATION, A SHAFT, AN INTERMEDIATE PORTION OF POLYGONAL CROSSSECTIONAL SHAPE ON SAID SHAFT, SAID INTERMEDIATE PORTION HAVING ADJACENT FACES INTERSECTING TO FORM AN APEX, A PLURALITY OF CIRCUMFERENTIALLY SPACED SEGMENTS FREELY POSITIONED IN OVERLYING RELATIONSHIP WITH SAID SHAFT INTERMEDIATE PORTION, EACH OF SAID SEGMENTS HAVING A V-SHAPED INNER SURFACE CORRESPONDING TO AND ARRANGED IN OVERLYING MATING RELATIONSHIP WITH A PAIR OF ADJACENT FACES ON SAID SHAFT INTERMEDIATE PORTION, COLLAR MEANS MOUNTED ON SAID SHAFT ADJACENT EACH END OF SAID SHAFT INTERMEDIATE PORTION FOR LIMITING RADIALLY OUTWARD MOVEMENT OF SAID SEGMENTS, MEANS FOR YIELDINGLY URGING SAID SEGMENTS RADIALLY OUTWARD INTO ENGAGEMENT WITH SAID COLLAR MEANS AND INTO UNIFORMLY SPACED PARALLEL RELATIONSHIP WITH SAID SHAFT
Claim 2
Dependent Claim
120 words
A CHUCK FOR TUBULAR CORE COMPRISING, IN COMBINATION, A SHAFT, AN INTERMEDIATE PORTION OF POLYGONAL CROSSSECTIONAL SHAPE ON SAID SHAFT, SAID INTERMEDIATE PORTION HAVING ADJACENT FACES INTERSECTING TO FORM AN APEX, A PLURALITY OF CIRCUMFERENTIALLY SPACED SEGMENTS FREELY POSITIONED IN OVERLYING RELATIONSHIP WITH SAID SHAFT INTERMEDIATE PORTION, EACH OF SAID SEGMENTS HAVING A V-SHAPED INNER SURFACE CORRESPONDING TO AND ARRANGED IN OVERLYING MATING RELATIONSHIP WITH A PAIR OF ADJACENT FACES ON SAID SHAFT INTERMEDIATE PORTION, COLLAR MEANS MOUNTED ON SAID SHAFT ADJACENT EACH END OF SAID SHAFT INTERMEDIATE PORTION FOR LIMITING RADIALLY OUTWARD MOVEMENT OF SAID SEGMENTS, MEANS FOR YIELDINGLY URGING SAID SEGMENTS RADIALLY OUTWARD INTO ENGAGEMENT WITH SAID COLLAR MEANS AND INTO UNIFORMLY SPACED PARALLEL RELATIONSHIP WITH SAID SHAFT
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |