Patent US2840976A successfully refreshed from Google Patents.
Patent US3199657A successfully refreshed from Google Patents.
US3199657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Live roller conveyor
Assignee: Mechanical Handling Systems Inc
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Filing: 1963-08-05
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Granted: 1965-08-10
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Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 Homer S Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:35
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/22; B65G47/26; B65G47/261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A LIVE ROLLER CONVEYOR, THE COMBINATION COMPRISING A FRAME, A PLURALITY OF CONVEYOR ROLLERS, MEANS FOR ROTATABLY SUPPORTING EACH SAID CONVEYOR ROLLER IN SAID FRAME WITH ITS AXIS EXTENDING TRANSVERSELY OF SAID FRAME AND MOVABLE UPWARDLY AND REARWARDLY, EACH SAID CONVEYOR ROLLER NORMALLY POSITIONED DOWNWARDLY AND FORWARDLY OF THE FRAME, MENS FOR FRICTIONALLY ENGAGING SAID CONVEYOR ROLLERS ADJACENT THE UNDERSIDE FOR DRIVING THE CONVEYOR ROLLERS, SUCH THAT WHEN A LOAD IS INTERRUPTED IN ITS MOVEMENT ALONG SAID CONVEYOR ROLLERS, THE CONVEYOR ROLLERS UNDER SAID LOAD ARE CAUSED TO MOVE UPWARDLY AND REARWARDLY BY TRACKING ENGAGEMENT WITH THE UNDERSIDE OF THE LOAD OUT OF DRIVING ENGAGEMENT WITH SAID ENGAGING AND DRIVING MEANS THEREBY INTERRUPTING ROTATION OF SAID CONVEYOR ROLLERS UNDER SAID LOAD.
Claim 2
Dependent Claim
122 words
IN A LIVE ROLLER CONVEYOR, THE COMBINATION COMPRISING A FRAME, A PLURALITY OF CONVEYOR ROLLERS, MEANS FOR ROTATABLY SUPPORTING EACH SAID CONVEYOR ROLLER IN SAID FRAME WITH ITS AXIS EXTENDING TRANSVERSELY OF SAID FRAME AND MOVABLE UPWARDLY AND REARWARDLY, EACH SAID CONVEYOR ROLLER NORMALLY POSITIONED DOWNWARDLY AND FORWARDLY OF THE FRAME, MENS FOR FRICTIONALLY ENGAGING SAID CONVEYOR ROLLERS ADJACENT THE UNDERSIDE FOR DRIVING THE CONVEYOR ROLLERS, SUCH THAT WHEN A LOAD IS INTERRUPTED IN ITS MOVEMENT ALONG SAID CONVEYOR ROLLERS, THE CONVEYOR ROLLERS UNDER SAID LOAD ARE CAUSED TO MOVE UPWARDLY AND REARWARDLY BY TRACKING ENGAGEMENT WITH THE UNDERSIDE OF THE LOAD OUT OF DRIVING ENGAGEMENT WITH SAID ENGAGING AND DRIVING MEANS THEREBY INTERRUPTING ROTATION OF SAID CONVEYOR ROLLERS UNDER SAID LOAD.
References Cited (Backward Citations)
US3012652A
Cited
US3116823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |