US3815899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet delivery device
Assignee: Xerox Corp
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Filing: 1973-03-19
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Granted: 1974-06-11
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Expires: 1993-03-19
Abstract
Abstract A sheet delivering and propelling device for use in a reproducing machine for moving copy sheets from the end of a delivery or processing surface to a collecting tray. The device comprises resilient foam rolls mounted on a delivery shaft which extends substantially across the width of the machine and generally vertically above a downwardly inclined portion of the processing surface. The outer radius of each roll is greater than the distance between the axis of the delivery shaft and the top surface of the processing surface to thereby continuously compress and release radial sectors of the foam rolls which, after passage of the sheets thereunder, momentarily thrust the sheets toward the collecting tray.
Inventors
- 👤 J Hatzmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:31
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6552; B; B65; B65H; B65H29/00; B65H29/20; B65H29/22
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
160 words
An arrangement for propelling a sheet of paper into a collection tray comprising, a plane surface on which said sheet rides, a shaft spaced above said surface, the axis of said shaft being substantially parallel to said surface, said surface defining a corner substantially directly below said axis, a plurality of resilient, open cell plastic rolls mounted on said shaft, the radius defined by the periphery of each of said rolls being greater than the distance between said axis and the nearest portion of said surface whereby the sector of said roll in contact with said surface is compressed to energy-load said roll, and is released by subsequent rotation thereof beyond said corner, and means for rotating said shaft so as to friction drive said paper along said surface toward said tray, whereby upon passage of the trailing edge of said sheet into said corner the release of said roll propels said sheet momentarily in the direction of said tray.
Claim 2
Dependent Claim
160 words
An arrangement for propelling a sheet of paper into a collection tray comprising, a plane surface on which said sheet rides, a shaft spaced above said surface, the axis of said shaft being substantially parallel to said surface, said surface defining a corner substantially directly below said axis, a plurality of resilient, open cell plastic rolls mounted on said shaft, the radius defined by the periphery of each of said rolls being greater than the distance between said axis and the nearest portion of said surface whereby the sector of said roll in contact with said surface is compressed to energy-load said roll, and is released by subsequent rotation thereof beyond said corner, and means for rotating said shaft so as to friction drive said paper along said surface toward said tray, whereby upon passage of the trailing edge of said sheet into said corner the release of said roll propels said sheet momentarily in the direction of said tray.
Claim 3
Dependent Claim
27 words
The combination defined in claim 1 wherein said surface is inclined upwardly in the direction of said shaft on the side of said shaft opposite said tray.
Claim 4
Dependent Claim
21 words
The combination recited in claim 2 wherein the base surface of said collection tray is inclined upwardly away from said shaft.
Claim 5
Dependent Claim
91 words
Apparatus for delivering copy sheets from a processing surface to a collecting tray located forwardly and below said surface comprising a resilient roll, means mounting said roll for rotation above said surface, said roll having a radius sufficiently large such that peripheral areas thereof are continuously compressed by said surface during rotation to energy-load said roll, said surface adjacent said area of compression being shaped to allow release of said roll against the trailng edge of said sheet to accelerate said sheet in the direction of its advance after passage thereunder.
Claim 6
Dependent Claim
91 words
Apparatus for delivering copy sheets from a processing surface to a collecting tray located forwardly and below said surface comprising a resilient roll, means mounting said roll for rotation above said surface, said roll having a radius sufficiently large such that peripheral areas thereof are continuously compressed by said surface during rotation to energy-load said roll, said surface adjacent said area of compression being shaped to allow release of said roll against the trailng edge of said sheet to accelerate said sheet in the direction of its advance after passage thereunder.
Claim 7
Dependent Claim
15 words
The combination recited in claim 4 wherein said roll is made of a polyurethane foam.
Claim 8
Dependent Claim
24 words
The combination recited in claim 5 wherein said roll is characterized by a plurality of hairlike resilient projections covering substantially the entire periphery thereof.
Claim 9
Dependent Claim
16 words
The combination recited in claim 4 wherein said roll is made of a porous foam material.
Claim 10
Dependent Claim
20 words
The combination recited in claim 4 wherein said surface defines a corner approximately vertically below the axis of said roll.
Claim 11
Dependent Claim
94 words
An arrangement for moving a sheet of paper into a collection tray comprising a surface on which said sheet is conveyed, said surface defining a corner, roll means mounted for rotation above said corner, a peripheral sector of said roll means being continuously compressed by said surface adjacent said corner to thereby energy-load said roll means, the compressed sector being released by rotation beyond said corner, whereby upon passage of the trailing edge of said sheet over said corner the release of said sector propels said sheet momentarily in the direction of said tray.
Claim 12
Dependent Claim
94 words
An arrangement for moving a sheet of paper into a collection tray comprising a surface on which said sheet is conveyed, said surface defining a corner, roll means mounted for rotation above said corner, a peripheral sector of said roll means being continuously compressed by said surface adjacent said corner to thereby energy-load said roll means, the compressed sector being released by rotation beyond said corner, whereby upon passage of the trailing edge of said sheet over said corner the release of said sector propels said sheet momentarily in the direction of said tray.
Claim 13
Dependent Claim
15 words
The combination defined in claim 9 wherein said roll means comprises an open-cell urethane roll.
Claim 14
Dependent Claim
24 words
The combination defined in claim 9 wherein said roll means comprises a plurality of open-cell rolls spaced apart across the width of said sheet.
Claim 15
Dependent Claim
25 words
The combination defined in claim 11 wherein said rolls are mounted on a shaft, the axis of said shaft being substantially directly above said corner.
Claim 16
Dependent Claim
34 words
The combination recited in claim 9 wherein said collection tray is located below said corner in the direction of movement of said sheets and is inclined upwardly in the direction away from said corner.
Claim 17
Dependent Claim
104 words
Apparatus for delivering a sheet from a processing surface to a collecting tray located forwardly of and below said surface comprising a roll having resilient hairlike projections integral therewith over substantially the entire periphery thereof, means for mounting said roll for rotation above said surface, said roll having a radius sufficiently large to continuously bend some of said projections by contact with said surface during rotation of saiD roll to thereby energy load said projections, whereby when the trailing edge of said sheet passes under said roll it is accelerated by the release of said projections beyond the area of contact with said surface.
Claim 18
Dependent Claim
104 words
Apparatus for delivering a sheet from a processing surface to a collecting tray located forwardly of and below said surface comprising a roll having resilient hairlike projections integral therewith over substantially the entire periphery thereof, means for mounting said roll for rotation above said surface, said roll having a radius sufficiently large to continuously bend some of said projections by contact with said surface during rotation of saiD roll to thereby energy load said projections, whereby when the trailing edge of said sheet passes under said roll it is accelerated by the release of said projections beyond the area of contact with said surface.
Claim 19
Dependent Claim
13 words
The combination recited in claim 14 wherein said roll comprises an open-cell plastic.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |