Patent US3306441A successfully refreshed from Google Patents.
US3306441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller assemblies with rolls radially separable from drive hubs
Assignee: Pettibone Traverse Lift LLC
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Filing: 1963-07-12
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Granted: 1967-02-28
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Expires: 1983-07-12
Abstract
No abstract record available.
Inventors
- 👤 Douglas O Sanders
- 👤 Gordon M Mohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:29
CPC Classifications
B; B02; B02C; B02C4/00; B02C4/28; B02C4/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN AN APPARATUS OF THE CLASS DESCRIBED HAVING A PLURALITY OF ROLLERS ROTATABLY MOUNTED ON A FRAME, THE IMPROVEMENT COMPRISING: A DRIVING HUB JOURNALED ON SAID FRAME; A DRIVEN HUB JOURNALED ON SAID FRAME; A ROLLER EXTENDING BETWEEN SAID HUBS; DOWEL SHAFT MEANS EXTENDING AXIALLY THROUGH SAID HUBS AND SAID ROLLER AND RELEASABLY AFFIXED IN PLACE, AND WHEN RELEASED AXIALLY REMOVABLE FROM SAID ROLLER TO PERMIT SAID ROLLER TO BE REMOVED FROM BETWEEN SAID HUBS WHILE THE HUBS REMAIN IN THE OPERATING POSITIONS; SAID DRIVING HUB AND THE ADJACENT END OF THE ROLLER HAVING A RADIALLY POSITIONED KEYWAY ON ONE AND AN INTERLOCKING KEY ON THE OTHER TO OPERATIVELY INTERCONNECT THE TWO WHILE PERMITTING THE REMOVAL OF THE ROLLER AFTER THE SHAFT HAS BEEN REMOVED.
Claim 2
Dependent Claim
125 words
IN AN APPARATUS OF THE CLASS DESCRIBED HAVING A PLURALITY OF ROLLERS ROTATABLY MOUNTED ON A FRAME, THE IMPROVEMENT COMPRISING: A DRIVING HUB JOURNALED ON SAID FRAME; A DRIVEN HUB JOURNALED ON SAID FRAME; A ROLLER EXTENDING BETWEEN SAID HUBS; DOWEL SHAFT MEANS EXTENDING AXIALLY THROUGH SAID HUBS AND SAID ROLLER AND RELEASABLY AFFIXED IN PLACE, AND WHEN RELEASED AXIALLY REMOVABLE FROM SAID ROLLER TO PERMIT SAID ROLLER TO BE REMOVED FROM BETWEEN SAID HUBS WHILE THE HUBS REMAIN IN THE OPERATING POSITIONS; SAID DRIVING HUB AND THE ADJACENT END OF THE ROLLER HAVING A RADIALLY POSITIONED KEYWAY ON ONE AND AN INTERLOCKING KEY ON THE OTHER TO OPERATIVELY INTERCONNECT THE TWO WHILE PERMITTING THE REMOVAL OF THE ROLLER AFTER THE SHAFT HAS BEEN REMOVED.
References Cited (Backward Citations)
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US2610554A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |