Patent US3225893A successfully refreshed from Google Patents.
US3225893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: FMC Corp
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Filing: 1962-10-15
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Granted: 1965-12-28
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 Currie Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:30
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/22; B65G47/26; B65G47/261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A CONVEYOR COMPRISING A PLURALITY OF ROLLERS HORIZONTALLY ARRANGED IN SIDE-BY-SIDE RELATIONSHIP, MEANS MOUNTING ALL OF SAID ROLLERS FOR VERTICAL MOVEMENT, SAID MOUNTING MEANS INCLUDING MEANS FOR BIASING SAID ROLLERS UPWARDLY, AND DRIVE MEANS NORMALLY SPACED FROM AND BELOW SAID ROLLERS, SAID ROLLERS BEING MOVABLE INTO DRIVING ENGAGEMENT WITH SAID DRIVE MENAS UPON THE RECEPTION OF AN ARTICLE UPON THE ROLLERS TO EFFECT ROTATION OF THE ROLLERS AND THEREBY PROPEL THE ARTICLE BELOW THE CONVEYOR.
Claim 2
Dependent Claim
75 words
A CONVEYOR COMPRISING A PLURALITY OF ROLLERS HORIZONTALLY ARRANGED IN SIDE-BY-SIDE RELATIONSHIP, MEANS MOUNTING ALL OF SAID ROLLERS FOR VERTICAL MOVEMENT, SAID MOUNTING MEANS INCLUDING MEANS FOR BIASING SAID ROLLERS UPWARDLY, AND DRIVE MEANS NORMALLY SPACED FROM AND BELOW SAID ROLLERS, SAID ROLLERS BEING MOVABLE INTO DRIVING ENGAGEMENT WITH SAID DRIVE MENAS UPON THE RECEPTION OF AN ARTICLE UPON THE ROLLERS TO EFFECT ROTATION OF THE ROLLERS AND THEREBY PROPEL THE ARTICLE BELOW THE CONVEYOR.
References Cited (Backward Citations)
US633572A
Cited
US2234162A
Cited
US2785785A
Cited
US3047127A
Cited
US3012652A
Cited
US3118512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |