Patent US3674257A successfully refreshed from Google Patents.
US3674257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet separator for copying machines
Assignee: Diazit Co Inc
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Filing: 1971-02-03
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Granted: 1972-07-04
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Expires: 1991-02-03
Abstract
Abstract A sheet separator for separating an original sheet from a juxtaposed copy sheet as the sheets are advanced longitudinally through a copying machine, the sheet separator including means for establishing opposite areas of reduced air pressure, one such area adjacent each sheet, tending to pull the sheets from one another and a plurality of guides for deflecting the juxtaposed sheets from one such area toward the other area at spaced lateral locations such that the sheets are effectively separated.
Inventors
- 👤 Robert P Neeb
- 👤 Henry W Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:34
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
252 words
In a copying machine wherein an original sheet is initially juxtaposed with a copy sheet, the juxtaposed sheets are advanced longitudinally in the machine along a first path of travel, and the original and copy sheets are subsequently separated from one another such that one of said sheets follows a second path of travel which diverges from said first path of travel, a sheet separator comprising: first means for establishing a first area of reduced air pressure along said first path of travel, said first area extending longitudinally for a relatively short distance along the first path of travel and extending laterally over approximately the width of the advancing sheets; second means for establishing a second area of reduced air pressure along the second path of travel, said second area essentially overlapping at least a portion of the first area and diverging therefrom in the direction of advancement of said sheets; and a plurality of guides intercepting the first path of travel along a portion of the longitudinal extent of the first area and spaced laterally over the lateral extent of said first area, said guides being raised from said first area toward the second area to raise the advancing juxtaposed sheets from said first area toward said second area at laterally spaced locations to effect separation of said juxtaposed sheets such that one sheet follows one of said diverging paths of travel while the other sheet follows the other of said paths of travel as the sheets pass between said areas.
Claim 2
Dependent Claim
252 words
In a copying machine wherein an original sheet is initially juxtaposed with a copy sheet, the juxtaposed sheets are advanced longitudinally in the machine along a first path of travel, and the original and copy sheets are subsequently separated from one another such that one of said sheets follows a second path of travel which diverges from said first path of travel, a sheet separator comprising: first means for establishing a first area of reduced air pressure along said first path of travel, said first area extending longitudinally for a relatively short distance along the first path of travel and extending laterally over approximately the width of the advancing sheets; second means for establishing a second area of reduced air pressure along the second path of travel, said second area essentially overlapping at least a portion of the first area and diverging therefrom in the direction of advancement of said sheets; and a plurality of guides intercepting the first path of travel along a portion of the longitudinal extent of the first area and spaced laterally over the lateral extent of said first area, said guides being raised from said first area toward the second area to raise the advancing juxtaposed sheets from said first area toward said second area at laterally spaced locations to effect separation of said juxtaposed sheets such that one sheet follows one of said diverging paths of travel while the other sheet follows the other of said paths of travel as the sheets pass between said areas.
Claim 3
Dependent Claim
30 words
The invention of claim 1 wherein said first area of reduced air pressure extends beyond the second area of reduced air pressure in the direction of the oncoming juxtaposed sheets.
Claim 4
Dependent Claim
65 words
The invention of claim 1 wherein said first means includes: a first chamber having a wall including an outer surface juxtaposed with said first path of travel; means for drawing air from said first chamber to reduce the air pressure therein; and a plurality of apertures in said wall for establishing said first area of reduced air pressure at the outer surface of the wall.
Claim 5
Dependent Claim
73 words
The invention of claim 3 wherein said second means includes: a second chamber having a wall including an outer surface juxtaposed with said second path of travel; means for drawing air from said second chamber to reduce the air pressure therein; and a plurality of apertures in said wall of the second chamber for establishing said second area of reduced air pressure at the outer surface of the wall of the second chamber.
Claim 6
Dependent Claim
28 words
The invention of claim 4 wherein said wall of the first chamber extends beyond said wall of the second chamber in the direction of the oncoming juxtaposed sheets.
Claim 7
Dependent Claim
24 words
The invention of claim 4 wherein said guides extend from the wall of the first chamber toward the overlapping wall of the section chamber.
Claim 8
Dependent Claim
19 words
The invention of claim 6 wherein each guide is a wire affixed to the wall of the first chamber.
Claim 9
Dependent Claim
88 words
The invention of claim 4 wherein: the first chamber extends horizontally over the width of the advancing sheets below the first path of travel with the outer surface of the wall of the first chamber facing upwardly; the second chamber extends horizontally over the widTh of the advancing sheets above the second path of travel with the outer surface of the wall of the second chamber facing downwardly; and said guides are raised upwardly from the wall of the first chamber toward the wall of the second chamber.
Claim 10
Dependent Claim
23 words
The invention of claim 8 wherein each guide is a wire affixed to and arched upwardly from the wall of the first chamber.
Claim 11
Dependent Claim
28 words
The invention of claim 9 wherein said wall of the first chamber extends beyond said wall of the second chamber in the direction of the oncoming juxtaposed sheets.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |