US3247950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Live roller conveyor
Assignee: Alvey Conveyor Manufacturing Co
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Filing: 1964-09-14
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Granted: 1966-04-26
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Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:34
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/22; B65G47/26; B65G47/261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A LIVE ROLLER CONVEYOR COMPRISING A ROLLER CONVEYOR SUPPORT STRUCTURE, LOAD TRANSPORT ROLLERS JOURNAL ALONG SAID SUPPORT STRUCTURE DEFINING A PLANAR TRANSPORT PATH, AN ENTRANCE GUIDE DRUM JOURNALED AT ONE END OF SAID SUPPORT STRUCTURE, AN EXIT GUIDE DRUM JOURNALED AT THE OTHER END OF SAID SUPPORT STRUCTURE, A DRIVE BELT HAVING A DRIVE PASS EXTENDING OVER SAID ENTRANCE AND EXIT DRUMS AND UNDER SAID TRANSPORT ROLLERS, THE BELT DRIVE PASS OVER SAID EXIT GUIDE DRUM AND SAID ENTRANCE GUIDE DRUM DEFINING A TANGENT LINE BETWEEN TE PERIPHERIES THEREOF BELOW SAID TRANSPORT PATH FREE OF CONTACT WITH SAID TRANSPORT ROLLERS, LOAD COMPENSATOR MEANS DEPENDING FROM SAID SUPPORT STRUCTURE, SAID LOAD COMPENSATOR MEANS HAVING A FREE COUNTERWEIGHTED IDLER ROLLER OPERABLY CARRIED THEREON IN POSITION TO RAISE SAID DRIVE BELT INTO ENGAGEMENT WITH SAID TRANSPORT ROLLERS AND THEREBY ELEVATE SAID DRIVE PASS ABOVE SAID TANGENT LINE, SAID DRIVE BELT TENSIONING UNDER FRICTIONAL LOADING FROM SAID TRANSPORT ROLLERS TO COUNTERPOISE SAID IDLER ROLLERS, AND DROP SAID DRIVE PASS TOWARD SAID TANGENT LINE.
Claim 2
Dependent Claim
169 words
A LIVE ROLLER CONVEYOR COMPRISING A ROLLER CONVEYOR SUPPORT STRUCTURE, LOAD TRANSPORT ROLLERS JOURNAL ALONG SAID SUPPORT STRUCTURE DEFINING A PLANAR TRANSPORT PATH, AN ENTRANCE GUIDE DRUM JOURNALED AT ONE END OF SAID SUPPORT STRUCTURE, AN EXIT GUIDE DRUM JOURNALED AT THE OTHER END OF SAID SUPPORT STRUCTURE, A DRIVE BELT HAVING A DRIVE PASS EXTENDING OVER SAID ENTRANCE AND EXIT DRUMS AND UNDER SAID TRANSPORT ROLLERS, THE BELT DRIVE PASS OVER SAID EXIT GUIDE DRUM AND SAID ENTRANCE GUIDE DRUM DEFINING A TANGENT LINE BETWEEN TE PERIPHERIES THEREOF BELOW SAID TRANSPORT PATH FREE OF CONTACT WITH SAID TRANSPORT ROLLERS, LOAD COMPENSATOR MEANS DEPENDING FROM SAID SUPPORT STRUCTURE, SAID LOAD COMPENSATOR MEANS HAVING A FREE COUNTERWEIGHTED IDLER ROLLER OPERABLY CARRIED THEREON IN POSITION TO RAISE SAID DRIVE BELT INTO ENGAGEMENT WITH SAID TRANSPORT ROLLERS AND THEREBY ELEVATE SAID DRIVE PASS ABOVE SAID TANGENT LINE, SAID DRIVE BELT TENSIONING UNDER FRICTIONAL LOADING FROM SAID TRANSPORT ROLLERS TO COUNTERPOISE SAID IDLER ROLLERS, AND DROP SAID DRIVE PASS TOWARD SAID TANGENT LINE.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |