US3847388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet stacking method and apparatus
Assignee: Xerox Corp
•
Filing: 1972-12-20
•
Granted: 1974-11-12
•
Expires: 1992-12-20
Abstract
Abstract A sheet delivering and propelling device for stacking sheets of cut material in alignment within a collecting tray. An extended flapper element of elastomeric resilient material is coaxially aligned with one of a pair of cooperating pinch rollers arranged to deliver sheets into a collecting tray. The flapper is mounted within the pinch roll assembly so that it is deformed into a loaded condition as it is drawn into the nip formed between the cooperating rolls and, upon passing through the nip, is released against the uppermost sheet delivered into the tray imparting the energy stored therein to the sheet effecting the alignment of the sheet within the tray.
Inventors
- 👤 T Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6552; B; B65; B65H; B65H29/00; B65H29/20; B65H29/22; B65H31/00; B65H31/34; B65H31/36
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
187 words
A sheet propelling and aligning device comprising: a sheet collecting tray, said tray including a base means for supporting said sheets and a stop means extending upwardly of said base means; a rotating means positioned over said tray and said base means for advancing said sheet in a first direction over and past said stop means and into said tray, said rotating means further including propelling means for contacting a downwardly facing side of said sheet during advancement of said sheet in said first direction and for then contacting an upwardly facing side of said sheet delivered into said tray for propelling the entire sheet in a second direction different from said first direction to align said sheet in said tray against said stop means, said propelling means comprising at least one resilient blade member arranged to provide said contact with said upwardly and downwardly facing sides of said sheet and to turn with said rotating means, and extending outwardly of said rotating means in a generally radial direction, said blade member being of sufficient length to contact said base means when no sheets are supported thereon.
Claim 2
Dependent Claim
187 words
A sheet propelling and aligning device comprising: a sheet collecting tray, said tray including a base means for supporting said sheets and a stop means extending upwardly of said base means; a rotating means positioned over said tray and said base means for advancing said sheet in a first direction over and past said stop means and into said tray, said rotating means further including propelling means for contacting a downwardly facing side of said sheet during advancement of said sheet in said first direction and for then contacting an upwardly facing side of said sheet delivered into said tray for propelling the entire sheet in a second direction different from said first direction to align said sheet in said tray against said stop means, said propelling means comprising at least one resilient blade member arranged to provide said contact with said upwardly and downwardly facing sides of said sheet and to turn with said rotating means, and extending outwardly of said rotating means in a generally radial direction, said blade member being of sufficient length to contact said base means when no sheets are supported thereon.
Claim 3
Dependent Claim
15 words
A device as in claim 1 wherein said second direction generally opposes said first direction.
Claim 4
Dependent Claim
17 words
A device as in claim 2 wherein said rotating means comprises a pair of cooperating pinch rolls.
Claim 5
Dependent Claim
47 words
A device as in claim 3 further including means to deform said blade member into a loaded condition prior to said member contacting said sheet, and means to release said deformed blade against the sheet whereby the energy stored within said blade is imparted to the sheet.
Claim 6
Dependent Claim
22 words
A device as in claim 4 wherein said first direction is an upwardly direction and said second direction is a downwardly direction.
Claim 7
Dependent Claim
24 words
A device as in claim 5 wherein said resilient member is coaxially aligned on a common shaft with the lower of said pinch rolls.
Claim 8
Dependent Claim
14 words
A device as in claim 6 including a plurality of said elongated resilient members.
Claim 9
Dependent Claim
16 words
A device as in claim 7 wherein said resilient members are constructed of an elastomeric material.
Claim 10
Dependent Claim
34 words
A device as in claim 8 wherein each of said resilient members are arranged to make a plurality of contacts against each sheet delivered to said collecting tray and supported by said base means.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |