Patent US3355295A successfully refreshed from Google Patents.
Patent US4938998A successfully refreshed from Google Patents.
US3120891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic conveyor with improved flanged roll
Assignee: Eriez Manufacturing Co
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Filing: 1961-01-19
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Granted: 1964-02-11
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Expires: 1981-01-19
Abstract
No abstract record available.
Inventors
- 👤 Walter J Cmiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:03
CPC Classifications
B; B65; B65G; B65G54/00; B65G54/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
222 words
A CONVEYOR COMPRISING A DRUM, MEANS SUPPORTING SAID DRUM FOR ROTATION ABOUT AN AXIS, AXIALLY SPACED FIRST AND SECOND CYLINDRICAL MEMBERS ON SAID DRUM CONCENTRIC TO THE AXIS THEREOF, MEANS MAGNETIZING SAID CYLINDRICAL MEMBERS TO GIVE SAID FIRST CYLINDRICAL MEMBERS A NORTH POLARITY AND SAID SECOND CYLINDRICAL MEMBER A SOUTH POLARITY, SPACED FIRST AND SECOND RAILS MADE OF MAGNETIC MATERIAL, SAID RAILS BEING DISPOSED IN A PLANE PARALLEL TO THE AXIS OF ROTATION OF SAID DRUM AND DISPOSED GENERALLY TANGENT THERETO, MEANS MAGNETIZING SAID RAILS TO RENDER ONE A NORTH POLARITY AND THE OTHER A SOUTH POLARITY, SAID FIRST RAIL BEING DISPOSED ADJACENT SAID FIRST CYLINDRICAL MEMBER AND SAID SECOND RAIL ADJACENT SAID SECOND CYLINDRICAL MEMBER, CONVEYOR MEANS SUPPORTED ON SAID DRUM AND SLIDABLE ON SAID RAILS, A FIRST AND A SECOND PLATE LIKE POLE MEMBER DISPOSED IN A CURVED PATH AROUND THE CENTRAL AXIS OF SAID DRUM WITH A CENTER OF CURVATURE OF SAID CURVED PATH BEING AT SAID AXIS, ONE SAID POLE MEMBER BEING SPACED RADIALLY OUTWARDLY OF THE OTHER, SAID POLE MEMBERS BEING DISPOSED IN A PLANE PERPENDICULAR TO SAID AXIS OF SAID DRUM AND PERPENDICULAR TO THE PLANE OF SAID RAILS AND AT THE OUTER EDGE OF ONE SAID RAIL, AND MEANS MAGNETIZING SAID POLE MEMBERS TO RENDER ONE A NORTH POLARITY AND THE OTHER A SOUTH POLARITY.
Claim 2
Dependent Claim
222 words
A CONVEYOR COMPRISING A DRUM, MEANS SUPPORTING SAID DRUM FOR ROTATION ABOUT AN AXIS, AXIALLY SPACED FIRST AND SECOND CYLINDRICAL MEMBERS ON SAID DRUM CONCENTRIC TO THE AXIS THEREOF, MEANS MAGNETIZING SAID CYLINDRICAL MEMBERS TO GIVE SAID FIRST CYLINDRICAL MEMBERS A NORTH POLARITY AND SAID SECOND CYLINDRICAL MEMBER A SOUTH POLARITY, SPACED FIRST AND SECOND RAILS MADE OF MAGNETIC MATERIAL, SAID RAILS BEING DISPOSED IN A PLANE PARALLEL TO THE AXIS OF ROTATION OF SAID DRUM AND DISPOSED GENERALLY TANGENT THERETO, MEANS MAGNETIZING SAID RAILS TO RENDER ONE A NORTH POLARITY AND THE OTHER A SOUTH POLARITY, SAID FIRST RAIL BEING DISPOSED ADJACENT SAID FIRST CYLINDRICAL MEMBER AND SAID SECOND RAIL ADJACENT SAID SECOND CYLINDRICAL MEMBER, CONVEYOR MEANS SUPPORTED ON SAID DRUM AND SLIDABLE ON SAID RAILS, A FIRST AND A SECOND PLATE LIKE POLE MEMBER DISPOSED IN A CURVED PATH AROUND THE CENTRAL AXIS OF SAID DRUM WITH A CENTER OF CURVATURE OF SAID CURVED PATH BEING AT SAID AXIS, ONE SAID POLE MEMBER BEING SPACED RADIALLY OUTWARDLY OF THE OTHER, SAID POLE MEMBERS BEING DISPOSED IN A PLANE PERPENDICULAR TO SAID AXIS OF SAID DRUM AND PERPENDICULAR TO THE PLANE OF SAID RAILS AND AT THE OUTER EDGE OF ONE SAID RAIL, AND MEANS MAGNETIZING SAID POLE MEMBERS TO RENDER ONE A NORTH POLARITY AND THE OTHER A SOUTH POLARITY.
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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |