Patent US3219172A successfully refreshed from Google Patents.
US3219172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Live roller conveyor
Assignee: Mechanical Handling Systems Inc
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Filing: 1963-11-01
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Granted: 1965-11-23
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Expires: 1983-11-01
Abstract
No abstract record available.
Inventors
- 👤 Homer S Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:12
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/22; B65G47/26; B65G47/261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
217 words
A CONVEYOR COMPRISING A FRAME, A PLURALITY OF CONVEYOR ROLLERS EXTENDING TRANSVERSELY AND ROTATABLY MOUNTED IN THE FRAME, A BELT DRIVEN BENEATH THE CONVEYOR ROLLERS, AND A PLURALITY OF PRESSURE ROLLER SECTIONS POSITIONED AT LONGITUDINALLY SPACED POINTS BENEATH SAID BELT FOR URGING THE BELT INTO ENGAGEMENT WITH THE CONVEYOR ROLLERS TO DRIVE THE CONVEYOR ROLLERS AND, IN TURN, ARTICLES IN SUCCESSION ALONG SAID CONVEYOR ROLLERS, MEANS FOR MOUNTING EACH SAID SECTION OF MOVEMENT TOWARD AND AWAY FROM THE BELT TO MOVE THE BELT INTO AND OUT OF DRIVING ENGAGEMENT WITH THE CONVEYOR ROLLERS, A PAIR OF TRIGGER ROLLERS INDIVIDUALLY TO EACH SAID PRESSURE ROLLER SECTION POSITIONED IN SERIES WITH THE CONVEYOR ROLLERS AND ADAPTED TO BE CONTACTED BY THE BELT, MEANS FOR MOUNTING SAID TRIGGER ROLLERS WITH A CONVEYOR ROLLER BETWEEN SAID PAIR OF TRIGGER ROLLERS AND FOR MOVEMENT REARWARDLY BY TRACKING ALONG THE UNDERSIDE OF AN ARTICLE DUE TO ENGAGEMENT OF A TRIGGER ROLLER WITH THE BELT WHEN AN ARTICLE IS INTERRUPTED OVER THE TRIGGER ROLLER IN ITS MOVEMENT ON THE CONVEYOR, AND MEANS RESPONSIVE TO THE MOVEMENT OF THE TRIGGER ROLLER LONGITUDINALLY OF THE CONVEYOR WHEN AN ARTICLE IS INTERRUPTED IN ITS MOVEMENT OVER A TRIGGER ROLLER FOR MOVING THE PRESSURE ROLLER SECTION TO MOVE THE BELT OUT OF DRIVING ENGAGEMENT WITH THE CONVEYOR ROLLERS.
Claim 2
Dependent Claim
217 words
A CONVEYOR COMPRISING A FRAME, A PLURALITY OF CONVEYOR ROLLERS EXTENDING TRANSVERSELY AND ROTATABLY MOUNTED IN THE FRAME, A BELT DRIVEN BENEATH THE CONVEYOR ROLLERS, AND A PLURALITY OF PRESSURE ROLLER SECTIONS POSITIONED AT LONGITUDINALLY SPACED POINTS BENEATH SAID BELT FOR URGING THE BELT INTO ENGAGEMENT WITH THE CONVEYOR ROLLERS TO DRIVE THE CONVEYOR ROLLERS AND, IN TURN, ARTICLES IN SUCCESSION ALONG SAID CONVEYOR ROLLERS, MEANS FOR MOUNTING EACH SAID SECTION OF MOVEMENT TOWARD AND AWAY FROM THE BELT TO MOVE THE BELT INTO AND OUT OF DRIVING ENGAGEMENT WITH THE CONVEYOR ROLLERS, A PAIR OF TRIGGER ROLLERS INDIVIDUALLY TO EACH SAID PRESSURE ROLLER SECTION POSITIONED IN SERIES WITH THE CONVEYOR ROLLERS AND ADAPTED TO BE CONTACTED BY THE BELT, MEANS FOR MOUNTING SAID TRIGGER ROLLERS WITH A CONVEYOR ROLLER BETWEEN SAID PAIR OF TRIGGER ROLLERS AND FOR MOVEMENT REARWARDLY BY TRACKING ALONG THE UNDERSIDE OF AN ARTICLE DUE TO ENGAGEMENT OF A TRIGGER ROLLER WITH THE BELT WHEN AN ARTICLE IS INTERRUPTED OVER THE TRIGGER ROLLER IN ITS MOVEMENT ON THE CONVEYOR, AND MEANS RESPONSIVE TO THE MOVEMENT OF THE TRIGGER ROLLER LONGITUDINALLY OF THE CONVEYOR WHEN AN ARTICLE IS INTERRUPTED IN ITS MOVEMENT OVER A TRIGGER ROLLER FOR MOVING THE PRESSURE ROLLER SECTION TO MOVE THE BELT OUT OF DRIVING ENGAGEMENT WITH THE CONVEYOR ROLLERS.
References Cited (Backward Citations)
US3012652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |