Patent US3220538A successfully refreshed from Google Patents.
US3220538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting for belt-troughing idlers
Assignee: JB Ehrsam and Sons Manufacturing Co
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Filing: 1964-06-09
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Granted: 1965-11-30
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Expires: 1984-06-09
Abstract
No abstract record available.
Inventors
- 👤 Hugh D Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:44
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B65G39/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
FOR USE IN A BELT CONVEYOR STRUCUTRE INCLUDING LATERALLY-SPACED PAIRS OF SUPPORT MEANS, AN IDLER STRUCTURE COMPRISING TRANSAXIALLY FLEXIBLE, AXIALLY RESILIENT ROLLER MEANS, HUB MEANS AT EACH END OF SAID ROLLER MEANS FIXED TO ROTATE WITH SAID ROLLER MEANS, A SPINDLE FOR EACH HUB MEANS, ANTI-FRICTION BEARING MEANS INTERPOSED BETWEEN EACH SPINDLE AND ITS HUB MEANS, MEANS SECURING EACH SPINDLE AGAINST AXIAL MOVEMENT RELATIVE TO ITS HUB MEANS, AND A GIMBAL ASSEMBLY FOR EACH SPINDLE, EACH GIMBAL ASSEMBLY COMPRISING A FIRST MEMBER SECURED TO ITS SPINDLE AND A SECOND MEMBER CONNECTED TO SAID FIRST MEMBER FOR RELATIVE OSCILLATION ABOUT AN AXIS TRANSVERSE RELATIVE TO THE AXIS OF ITS SPINDLE, SAID SECOND MEMBER BEING PROVIDED WITH TRUNNION MEANS PERPENDICULAR TO
Claim 2
Dependent Claim
119 words
FOR USE IN A BELT CONVEYOR STRUCUTRE INCLUDING LATERALLY-SPACED PAIRS OF SUPPORT MEANS, AN IDLER STRUCTURE COMPRISING TRANSAXIALLY FLEXIBLE, AXIALLY RESILIENT ROLLER MEANS, HUB MEANS AT EACH END OF SAID ROLLER MEANS FIXED TO ROTATE WITH SAID ROLLER MEANS, A SPINDLE FOR EACH HUB MEANS, ANTI-FRICTION BEARING MEANS INTERPOSED BETWEEN EACH SPINDLE AND ITS HUB MEANS, MEANS SECURING EACH SPINDLE AGAINST AXIAL MOVEMENT RELATIVE TO ITS HUB MEANS, AND A GIMBAL ASSEMBLY FOR EACH SPINDLE, EACH GIMBAL ASSEMBLY COMPRISING A FIRST MEMBER SECURED TO ITS SPINDLE AND A SECOND MEMBER CONNECTED TO SAID FIRST MEMBER FOR RELATIVE OSCILLATION ABOUT AN AXIS TRANSVERSE RELATIVE TO THE AXIS OF ITS SPINDLE, SAID SECOND MEMBER BEING PROVIDED WITH TRUNNION MEANS PERPENDICULAR TO
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |