US3635467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper feed control system
Assignee: Ricoh Co Ltd
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Filing: 1969-12-16
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Granted: 1972-01-18
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Expires: 1989-12-16
Abstract
Abstract A paper feed control system in which a braking means holds a paper sheet or the like at the instant that follower rollers are spaced apart from a feed drive roller. The paper sheet or the like may be stopped at a predetermined position regardless of feed speed.
Inventors
- 👤 Yugoro Kobayashi
- 👤 Tsutomu Yamakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:24
CPC Classifications
B; B65; B65H; B65H5/00; B65H5/06; B65H5/062
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
266 words
A paper feed control system for use with Automatic copying machines, printing presses or the like comprising a passage area through which the paper is advanced; a drive roller positioned below said passage area with its upper peripheral area in contact with the bottom of the paper; a follower roller drive shaft located above said passage area and having a mounting associated therewith; follower roller drive means positioned on said mounting to rotate on said drive shaft; a control shaft spaced from said drive shaft and located above said passage area; plate means extending between said control shaft and said mounting in fixed relation thereto, and said plate means having a portion positioned adjacent the lower peripheral area of said control shaft, said plate means portion located between said control shaft and said drive shaft, and selected rotation of said control shaft rotates said plate means and thereby moves said follower roller drive means into and out of contact with the top of the paper; braking means fixedly connected to said control shaft and having an end thereof adapted to contact and brake the advancement of the paper in correlation with the movement of said follower roller drive means out of contact with the paper, said braking means extending from one side of said control shaft, over said control shaft and extending on the other side of said control shaft, and said braking means having a portion spaced above said plate means portion; and adjustment means connecting said portions and adjustable to vertically space said end of said braking means with respect to said plate means.
Claim 2
Dependent Claim
266 words
A paper feed control system for use with Automatic copying machines, printing presses or the like comprising a passage area through which the paper is advanced; a drive roller positioned below said passage area with its upper peripheral area in contact with the bottom of the paper; a follower roller drive shaft located above said passage area and having a mounting associated therewith; follower roller drive means positioned on said mounting to rotate on said drive shaft; a control shaft spaced from said drive shaft and located above said passage area; plate means extending between said control shaft and said mounting in fixed relation thereto, and said plate means having a portion positioned adjacent the lower peripheral area of said control shaft, said plate means portion located between said control shaft and said drive shaft, and selected rotation of said control shaft rotates said plate means and thereby moves said follower roller drive means into and out of contact with the top of the paper; braking means fixedly connected to said control shaft and having an end thereof adapted to contact and brake the advancement of the paper in correlation with the movement of said follower roller drive means out of contact with the paper, said braking means extending from one side of said control shaft, over said control shaft and extending on the other side of said control shaft, and said braking means having a portion spaced above said plate means portion; and adjustment means connecting said portions and adjustable to vertically space said end of said braking means with respect to said plate means.
Claim 3
Dependent Claim
65 words
A paper feed control system according to claim 1, in which said plate means comprises a plurality of plate elements fixed together, at least two of said plate elements extending vertically, said mounting includes slots located within said vertical plates, said drive shaft is positioned within said slots, and biasing means is provided to maintain said drive shaft at the lower end of said slot.
Claim 4
Dependent Claim
28 words
A paper feed control system according to claim 1, in which said follower roller drive means comprises a pair of spaced rollers, and the mounting is connected therebetween.
Claim 5
Dependent Claim
59 words
A paper feed control system according to claim 1, in which said portions are flat areas, said adjustment means comprises a compression spring positioned between said flat areas, and an adjustment screw is located in contact with said braking means to vary the compression on said spring to determine the vertical positioning of the end of said braking means.
Claim 6
Dependent Claim
65 words
A paper feed control system according to claim 1, in which said passage area comprises spaced generally horizontal plates having openings therein for the drive roller and follower roller drive means to fit within to contact the paper, and the upper horizontal plate includes a further opening into which said end of the braking means passes to contact and brake the advancement of the paper.
References Cited (Backward Citations)
US2708405A
Cited
US3339917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |