US4875611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll media feed roll system
Assignee: Xerox Corp
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Filing: 1987-12-10
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Granted: 1989-10-24
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Expires: 2007-12-10
Abstract
Abstract A copy media feed system includes two pair of feed rolls which are horizontally aligned to form nip areas to engage the media. Each feed roll pair comprises one drive roll and one idler roll. For one pair, the drive roll is an elastomer-covered, high friction roll and the idler roll is a hard, roll. For the second pair the drive roll is a hard, high friction roll and the idler roll is an elastomer-covered roll. This arrangement provides accurate control of the media velocity.
Inventors
- 👤 Raymond E. Poehlein
- 👤 Franklin S. Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:45
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; B; B65; B65H; B65H20/00; B65H20/02; B65H27/00; B65H2404/00; B65H2404/10; B65H2404/13; B65H2404/134; B65H2404/1342; B65H2404/13421; B65H2404/14; B65H2404/143; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00371; G03G2215/00443; G03G2215/00451; G03G2215/00455; G03G2215/00535; G03G2215/00679
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
140 words
A feed roll system for feeding web media from a supply source along a feed path, the system including a first and second drive roll pair, in horizontal, axial alignment along the feed path, said first drive roll pair including a hard, high friction drive roll in compressive relationship with an, elastomer-covered idler roll, the first roll pair forming a first nip area therebetween, said second drive roll pair being axially spaced from said first drive roll pair and including an elastomer-covered, high friction drive roll in compressive relationship with a hard roller, the second roll pair forming a second nip area therebetween, whereby said first drive roll pair controls the media velocity through said first nip area and said second roll pair adjusts its drive velocity through said second nip area to match that of said first drive pair.
Claim 2
Dependent Claim
140 words
A feed roll system for feeding web media from a supply source along a feed path, the system including a first and second drive roll pair, in horizontal, axial alignment along the feed path, said first drive roll pair including a hard, high friction drive roll in compressive relationship with an, elastomer-covered idler roll, the first roll pair forming a first nip area therebetween, said second drive roll pair being axially spaced from said first drive roll pair and including an elastomer-covered, high friction drive roll in compressive relationship with a hard roller, the second roll pair forming a second nip area therebetween, whereby said first drive roll pair controls the media velocity through said first nip area and said second roll pair adjusts its drive velocity through said second nip area to match that of said first drive pair.
Claim 3
Dependent Claim
26 words
The feed roll system of claim 1 wherein said elastomer-covered, high friction drive roll comprises a metal core covered with a thick, high friction elastomer layer.
Claim 4
Dependent Claim
21 words
The feed roll system of claim 1 wherein said elastomer covered rolls are shorter in length then said opposed high roll.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |