US3908883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-chain bi-directional paper mover
Assignee: Unisys Corp
•
Filing: 1974-07-24
•
Granted: 1975-09-30
•
Expires: 1994-07-24
Abstract
Abstract Transport device for moving continuous forms having marginal feed holes to and away from a print station. More particularly, the bidirectional paper mover includes a single endless chain having a plurality of feed pins secured thereto for cooperation with the marginal holes of the continuous forms. The chain is disposed about an outer guide which provides a path for the paper transport''s endless chain and two guides providing the same kind of path in the upper and lower portion of the transport device, respectively. The purpose of the outer guide is to create an operating section for printer or platen means.
Inventors
- 👤 Giorgio Bellisai
- 👤 Guy Lemaire
- 👤 Claude Gerard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:07
CPC Classifications
B; B41; B41J; B41J11/00; B41J11/26; B41J11/30; B65; B65H; B65H20/00; B65H20/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
In a one-chain paper mover, an endless chain having means for engaging a paper web or document to be fed past an operating region, a first guide section and a second guide section spaced from each other and positioned within said endless chain and about which said endless chain is slidingly guided, and a third guide section positioned in the operating region and outside said endless chain and between said first and second guide section, said third guide section guidingly deflecting a portion of said chain inwardly in the operating region.
Claim 2
Dependent Claim
91 words
In a one-chain paper mover, an endless chain having means for engaging a paper web or document to be fed past an operating region, a first guide section and a second guide section spaced from each other and positioned within said endless chain and about which said endless chain is slidingly guided, and a third guide section positioned in the operating region and outside said endless chain and between said first and second guide section, said third guide section guidingly deflecting a portion of said chain inwardly in the operating region.
Claim 3
Dependent Claim
15 words
The combination as claimed in claim 1 wherein a platen extends through said operating region.
Claim 4
Dependent Claim
42 words
The combination as claimed in claim 1 wherein one of said guide sections comprises the chain driving means and the other one of said guide sections comprises tensioning means which can be set so as to keep the endless chain operationally taut.
Claim 5
Dependent Claim
16 words
The combination as claimed in claim 1 wherein the chain driving means is a sprocket wheel.
Claim 6
Dependent Claim
38 words
The combination as claimed in claim 1 wherein a cavity is provided in the operating region where the chain is inwardly deflected by the said third guide section to receive a platen over which the paper is fed.
Claim 7
Dependent Claim
29 words
The combination as claimed in claim 1 wherein the means for engaging a paper web to be fed past said operating region comprise projections provided on said endless chain.
Claim 8
Dependent Claim
35 words
The combination as claimed in claim 1 wherein the means for engaging a paper web to be fed past said operating region comprise lateral extension provided on said endless chain, said lateral extensions carrying projections.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |