Patent US4239203A successfully refreshed from Google Patents.
US4239203A
Expired / Lapsed
US
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Paper delivery roller system
Assignee: Laurel Bank Machine Co Ltd
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Filing: 1977-12-09
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Granted: 1980-12-16
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Expires: 1997-12-09
Abstract
Abstract In a paper delivery roller system, frictional surfaces of a pair of rollers are composed of the same material and the length of frictional surfaces of the feed roller is longer than the length of the frictional surface of the return roller.
Inventors
- 👤 Isamu Uchida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:37
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/02; B65H3/06; B65H3/0638
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A paper delivery roller system comprising a feed roller 11 and return roller 12 of identical axial length disposed in a delivery zone so as to form a gap therebetween, said rollers 11 and 12 being rotated in the same direction so that frictional forces acting in reverse directions are given to the upper and lower faces of the outermost sheet in a stack of sheets of paper stored in a store zone whereby the sheets of paper stored in the store zone are delivered one by one into the gap between said rollers 11 and 12, said paper delivery roller system being characterized by said rollers 11 and 12 having frictional surfaces 14 and 15 of the same material thereon respectively and the axial length of the frictional surfaces 14 of the feed roller 11 being larger than the axial length of the frictional surfaces 15 of the return roller 12 and each of the frictional surfaces of one of the rollers being in opposed relation to each of the non-frictional surfaces of the other.
Claim 2
Dependent Claim
176 words
A paper delivery roller system comprising a feed roller 11 and return roller 12 of identical axial length disposed in a delivery zone so as to form a gap therebetween, said rollers 11 and 12 being rotated in the same direction so that frictional forces acting in reverse directions are given to the upper and lower faces of the outermost sheet in a stack of sheets of paper stored in a store zone whereby the sheets of paper stored in the store zone are delivered one by one into the gap between said rollers 11 and 12, said paper delivery roller system being characterized by said rollers 11 and 12 having frictional surfaces 14 and 15 of the same material thereon respectively and the axial length of the frictional surfaces 14 of the feed roller 11 being larger than the axial length of the frictional surfaces 15 of the return roller 12 and each of the frictional surfaces of one of the rollers being in opposed relation to each of the non-frictional surfaces of the other.
References Cited (Backward Citations)
US2655374A
Cited
US3771783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |