US4189138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper feeder
Assignee: Xerox Ltd
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Filing: 1978-01-31
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Granted: 1980-02-19
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Expires: 1998-01-31
Abstract
Abstract A paper feeding apparatus adapted to feed paper sheets one by one by the rotational force of feed rollers acting on the uppermost surface of stacked paper sheets, including a linkage arrangement for moving the feed rollers transverse to the direction of paper sheet feed.
Inventors
- 👤 Kiyoshi Kaneko
- 👤 Shigeru Ikeda
- 👤 Ken-ichi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:59
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/02; B65H3/06; B65H3/0669; B65H3/46; B65H3/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A sheet feeding apparatus including two feed rolls in axial alignment and adapted for rotation about an axis for feeding sheets from a sheet supply tray perpendicular to the feed rolls axis, the improvement comprising side registration means adjacent to the supply tray, and means for moving the feed rolls axially at the start of each feed cycle, said moving means being adapted to simultaneously shift said two feed rolls axially toward said side registration means to form a buckle in the top sheet in the tray between said side registration means and the feed roll adjacent thereto to reduce the attraction force between the sheet being fed and the adjacent sheet.
Claim 2
Dependent Claim
112 words
A sheet feeding apparatus including two feed rolls in axial alignment and adapted for rotation about an axis for feeding sheets from a sheet supply tray perpendicular to the feed rolls axis, the improvement comprising side registration means adjacent to the supply tray, and means for moving the feed rolls axially at the start of each feed cycle, said moving means being adapted to simultaneously shift said two feed rolls axially toward said side registration means to form a buckle in the top sheet in the tray between said side registration means and the feed roll adjacent thereto to reduce the attraction force between the sheet being fed and the adjacent sheet.
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) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |