Patent US3966191A successfully refreshed from Google Patents.
US3966191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet separating device
Assignee: Pitney Bowes Inc
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Filing: 1975-04-16
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Granted: 1976-06-29
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Expires: 1995-04-16
Abstract
Abstract A sheet separating device is disclosed for separating a single sheet from a stack of sheets in an inclined supply hopper of a document feeder or the like. Spaced drive rollers are located above the stack and are operative to engage the uppermost sheet of the stack. During rotation of the drive roller, the sheets are separated one at a time from the stack and are fed to a work station, for instance, a printing station. Means is provided for equalizing the pressure of the separator upon the stack of sheets as its height decreases.
Inventors
- 👤 Harry Strobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:26
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/02; B65H3/06; B65H3/0638; B65H3/0669
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
148 words
A document feeder for supplying documents, one at a time, to a working station, the combination comprising: a support member, a sheet hopper disposed upon said support member, a housing having vertically extending walls pivotably supported by said support member, said vertically extending walls being located above said sheet hopper, a first shaft rotatably received within said housing and having a first roller mounted thereon, said first roller having a circumferential groove located therein, a friction wheel rotatably supported within said housing in operative engagement with said first roller, a second shaft having a second roller rotatably mounted thereon, said second roller being located above said supply hopper and having a circumferential eccentric groove disposed therein, said first roller being disposed intermediate said second roller and the working station, a belt received within said grooves, and a tension spring secured to said housing and to said support member.
Claim 2
Dependent Claim
148 words
A document feeder for supplying documents, one at a time, to a working station, the combination comprising: a support member, a sheet hopper disposed upon said support member, a housing having vertically extending walls pivotably supported by said support member, said vertically extending walls being located above said sheet hopper, a first shaft rotatably received within said housing and having a first roller mounted thereon, said first roller having a circumferential groove located therein, a friction wheel rotatably supported within said housing in operative engagement with said first roller, a second shaft having a second roller rotatably mounted thereon, said second roller being located above said supply hopper and having a circumferential eccentric groove disposed therein, said first roller being disposed intermediate said second roller and the working station, a belt received within said grooves, and a tension spring secured to said housing and to said support member.
Claim 3
Dependent Claim
160 words
A sheet separator device for feeding sheets individually from a stack of sheets, located within a hopper having side walls, to an addressing machine, the combination comprising: A. a first shaft supported by the side walls of the hopper; B. a housing pivotably supported by said first shaft; C. a separator roller located within said housing and rotatably mounted on said first shaft; D. a second shaft received within said housing, said second shaft being spaced from said first shaft; E. an auxiliary roller received within said housing and rotatably mounted on said second shaft; F. a third shaft disposed within said housing spaced relative to said first shaft; G. a friction wheel rotatably mounted on said third shaft in operational engagement with said separator roller; and H. a tension biasing member associated with one of the side walls of the hopper and having one end engaging said housing, said spring being positioned to exert a tension upon said housing.
Claim 4
Dependent Claim
160 words
A sheet separator device for feeding sheets individually from a stack of sheets, located within a hopper having side walls, to an addressing machine, the combination comprising: A. a first shaft supported by the side walls of the hopper; B. a housing pivotably supported by said first shaft; C. a separator roller located within said housing and rotatably mounted on said first shaft; D. a second shaft received within said housing, said second shaft being spaced from said first shaft; E. an auxiliary roller received within said housing and rotatably mounted on said second shaft; F. a third shaft disposed within said housing spaced relative to said first shaft; G. a friction wheel rotatably mounted on said third shaft in operational engagement with said separator roller; and H. a tension biasing member associated with one of the side walls of the hopper and having one end engaging said housing, said spring being positioned to exert a tension upon said housing.
Claim 5
Dependent Claim
29 words
The device of claim 2 wherein said biasing member is a tension spring having one end mounted on said first shaft and the opposite end mounted on said housing.
Claim 6
Dependent Claim
15 words
The device of claim 2 wherein said rollers have resilient material about the perimeters thereof.
Claim 7
Dependent Claim
15 words
The device of claim 4 wherein the outer surfaces of said resilient material are notched.
Claim 8
Dependent Claim
45 words
The device of claim 2 wherein said separator roller comprises two adjacent rings having a grooved connecting member therebetween, said auxiliary separator comprises two adjacent rings having an eccentrically grooved member therebetween and a drive belt is received within said grooves of said connecting members.
Claim 9
Dependent Claim
16 words
The device of claim 6 wherein said rings have notched resilient material about the perimeters thereof.
Claim 10
Dependent Claim
19 words
The device of claim 6 including means for adjusting the space between said separator roller and said friction wheel.
References Cited (Backward Citations)
US3059922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |