US3310252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion chuck
Assignee: Individual
•
Filing: 1966-08-22
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Granted: 1967-03-21
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Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 Lynn H Ewing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:51
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
A CHUCK FOR SECURING THE HOLLOW CORE OF A PAPER ROLL ONTO A ROTATABLE SUPPORTING SHAFT COMPRISING (A) A CYLINDRICALLY SHAPED BODY JOURNALED UPON THE ROTATABLE SUPPORTING SHAFT, (B) SAID BODY INCLUDING AN ENLARGED COLLAR THE CENTER BORE OF WHICH HAS A DIAMETER GREATER THAN THE DIAMETER OF THE SUPPORTING SHAFT, (C) A HOLLOW ELONGATED SLEEVE EXTENDING LATERALLY FROM ONE SIDE OF SAID COLLAR, (D) SAID SLEEVE HAVING AN INNER DIAMETER OF A SIZE THAT FREELY RECEIVES THE SUPPORTING SHAFT AND AN OUTER DIAMETER THAT IS FREELY INSERTABLE INTO THE HOLLOW CORE OF THE PAPER ROLL, (E) MEANS DIVIDING SAID COLLAR AND A PORTION OF SAID SLEEVE INTO RADIALLY EXPANSIBLE SECTIONS, (F) CLAMPING MEANS WITHIN THE CENTER BORE OF SAID COLLAR ENGAGEABLE WITH THE SUPPORTING SHAFT FOR CONNECTING SAID CHUCK TO THE SHAFT FOR ROTATION THEREWITH, (G) MEANS FOR MOVABLY CONNECTING SAID CLAMPING MEANS WITHIN THE CENTER BORE OF SAID COLLAR WHEREBY SAID CLAMPING MEANS ARE MOVABLE RADIALLY ABOUT THE SUPPORTING SHAFT INTO AND OUT OF CLAMPING ENGAGEMENT THEREWITH, AND (H) MEANS FOR RADIALLY EXPANDING SAID COLLAR AND SLEEVE SECTIONS ABOUT THE SUPPORTING SHAFT AND INTO BINDING CONTACT WITH THE HOLLOW CORE OF THE PAPER ROLL AND FOR MOVING SAID CLAMPING MEANS INTO CLAMPING ENGAGEMENT WITH THE SUPPORTING SHAFT.
Claim 2
Dependent Claim
209 words
A CHUCK FOR SECURING THE HOLLOW CORE OF A PAPER ROLL ONTO A ROTATABLE SUPPORTING SHAFT COMPRISING (A) A CYLINDRICALLY SHAPED BODY JOURNALED UPON THE ROTATABLE SUPPORTING SHAFT, (B) SAID BODY INCLUDING AN ENLARGED COLLAR THE CENTER BORE OF WHICH HAS A DIAMETER GREATER THAN THE DIAMETER OF THE SUPPORTING SHAFT, (C) A HOLLOW ELONGATED SLEEVE EXTENDING LATERALLY FROM ONE SIDE OF SAID COLLAR, (D) SAID SLEEVE HAVING AN INNER DIAMETER OF A SIZE THAT FREELY RECEIVES THE SUPPORTING SHAFT AND AN OUTER DIAMETER THAT IS FREELY INSERTABLE INTO THE HOLLOW CORE OF THE PAPER ROLL, (E) MEANS DIVIDING SAID COLLAR AND A PORTION OF SAID SLEEVE INTO RADIALLY EXPANSIBLE SECTIONS, (F) CLAMPING MEANS WITHIN THE CENTER BORE OF SAID COLLAR ENGAGEABLE WITH THE SUPPORTING SHAFT FOR CONNECTING SAID CHUCK TO THE SHAFT FOR ROTATION THEREWITH, (G) MEANS FOR MOVABLY CONNECTING SAID CLAMPING MEANS WITHIN THE CENTER BORE OF SAID COLLAR WHEREBY SAID CLAMPING MEANS ARE MOVABLE RADIALLY ABOUT THE SUPPORTING SHAFT INTO AND OUT OF CLAMPING ENGAGEMENT THEREWITH, AND (H) MEANS FOR RADIALLY EXPANDING SAID COLLAR AND SLEEVE SECTIONS ABOUT THE SUPPORTING SHAFT AND INTO BINDING CONTACT WITH THE HOLLOW CORE OF THE PAPER ROLL AND FOR MOVING SAID CLAMPING MEANS INTO CLAMPING ENGAGEMENT WITH THE SUPPORTING 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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |