US3858870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller driving system for feeding sheet materials
Assignee: Fujifilm Holdings Corp
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Filing: 1972-10-11
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Granted: 1975-01-07
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Expires: 1992-10-11
Abstract
Abstract In a roller driving system for feeding sheet materials comprising a plurality of roller pair units in series, the sheet material being passed from roller pair unit to roller pair unit by being nipped between the two rollers of a roller pair unit which are rotating in opposite directions with reference to each other, at least one roller of a roller pair being driven by driving means, the improvement wherein the number of the driving means on one side of at least a portion of the roller system is substantially the same as the number of driving means on the other side of the roller system, such that across any two alternate roller pair units the nipping pressure applied to the sheet material in a direction perpendicular to and across the direction of sheet material flow is substantially equal.
Inventors
- 👤 Shinichi Yabe
- 👤 Masayuki Kamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:35
CPC Classifications
B; B65; B65H; B65H20/00; B65H20/02; B65H2404/00; B65H2404/10; B65H2404/14; B65H2404/147
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
271 words
In a roller driving system for feeding sheet materials comprising: a plurality of roller pair units in series, each roller pair unit comprising rollers on opposite sides of said sheet material, rotating in opposite directions with reference to each other and frictionally driving said sheet material by nipping said sheet material between the two rollers of said roller pair units to pass said sheet material from roller pair unit to roller pair unit, the improvement comprising: each of said roller pair units being driven from one side only with each roller of said roller pair units carrying a gear to the same side thereof and in mesh with one another with one roller of a given roller pair unit driven by the other, the axes of said rollers for each roller pair unit defining a plane which is at right angles to the plane of sheet material moving between the rollers of the roller pair units, drive shafts extending along the direction in which the sheet materials are fed on each side of the roller pair units, gears carried by said drive shafts at locations corresponding to given roller pair units and in mesh with a gear carried by one of said rollers for each roller pair unit, the improvement wherein: each of said roller pair units is driven from one side only, and said roller pair units are driven alternately from opposite sides by way of said drive shafts and the gears carried thereby such that the nipping pressure applied to said sheet material as it progresses through said system from roller pair unit to roller pair unit is balanced.
Claim 2
Dependent Claim
271 words
In a roller driving system for feeding sheet materials comprising: a plurality of roller pair units in series, each roller pair unit comprising rollers on opposite sides of said sheet material, rotating in opposite directions with reference to each other and frictionally driving said sheet material by nipping said sheet material between the two rollers of said roller pair units to pass said sheet material from roller pair unit to roller pair unit, the improvement comprising: each of said roller pair units being driven from one side only with each roller of said roller pair units carrying a gear to the same side thereof and in mesh with one another with one roller of a given roller pair unit driven by the other, the axes of said rollers for each roller pair unit defining a plane which is at right angles to the plane of sheet material moving between the rollers of the roller pair units, drive shafts extending along the direction in which the sheet materials are fed on each side of the roller pair units, gears carried by said drive shafts at locations corresponding to given roller pair units and in mesh with a gear carried by one of said rollers for each roller pair unit, the improvement wherein: each of said roller pair units is driven from one side only, and said roller pair units are driven alternately from opposite sides by way of said drive shafts and the gears carried thereby such that the nipping pressure applied to said sheet material as it progresses through said system from roller pair unit to roller pair unit is balanced.
Claim 3
Dependent Claim
36 words
The roller driving system as claimed in claim 1, wherein: said gears carried by said drive shaft comprise worms in mesh with the gear at the end of said given roller for each roller pair unit.
References Cited (Backward Citations)
US1114621A
Cited
US1888004A
Cited
US1898005A
Cited
US2598858A
Cited
US3116922A
Cited
US3226111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |