US3586317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feed mechanism for paper
Assignee: ANACOMP Inc 11550 NORTH MERIDAN STREET CARMEL INDIANA 46032 A CORP OF INDIANA
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Filing: 1968-08-01
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Granted: 1971-06-22
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Expires: 1988-08-01
Abstract
Abstract Apparatus is described for individually feeding flexible sheets from a stack thereof. Roller means drive the top sheet of the stack off the remainder of the stack while a pair of hinged and weighted pressure members, in frictional engagement with the top sheet, produce displacement of the trailing corners of the sheet toward each other and thereby cause the top sheet to buckle and separate from the sheet below.
Inventors
- 👤 Louis A Smitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:00
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/46; B65H3/54; B65H1/00; B65H1/08; B65H1/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
209 words
Apparatus for individually feeding flexible sheets from a stack thereof, comprising, means for supporting the stack, roller means disposed to be in frictional engagement with the top sheet of the stack toward one edge of the top sheet intermedIate the side edges thereof, and a pair of pressure members disposed to be in frictional engagement with the top sheet of the stack toward the edge of the top sheet opposite said one edge and at the opposite side edges thereof and to produce forces thereon exerted toward each other, said roller means engaging the top sheet at a region displaced inwardly of the side edges of the sheet at a distance sufficient to produce inward displacement of the side edges of the sheet in the region of said pressure members when said roller means are turned to feed the top sheet, thereby separating the top sheet from the sheet below, said supporting means including a tray positioned below said roller means for receiving the stack, means for resiliently biasing said tray upwardly toward said roller means, a retainer plate disposed below said tray and supporting said biasing means, and a slidable base supporting the said retainer plate and said tray, said retainer plate being pivotally mounted to said base.
Claim 2
Dependent Claim
209 words
Apparatus for individually feeding flexible sheets from a stack thereof, comprising, means for supporting the stack, roller means disposed to be in frictional engagement with the top sheet of the stack toward one edge of the top sheet intermedIate the side edges thereof, and a pair of pressure members disposed to be in frictional engagement with the top sheet of the stack toward the edge of the top sheet opposite said one edge and at the opposite side edges thereof and to produce forces thereon exerted toward each other, said roller means engaging the top sheet at a region displaced inwardly of the side edges of the sheet at a distance sufficient to produce inward displacement of the side edges of the sheet in the region of said pressure members when said roller means are turned to feed the top sheet, thereby separating the top sheet from the sheet below, said supporting means including a tray positioned below said roller means for receiving the stack, means for resiliently biasing said tray upwardly toward said roller means, a retainer plate disposed below said tray and supporting said biasing means, and a slidable base supporting the said retainer plate and said tray, said retainer plate being pivotally mounted to said base.
Claim 3
Dependent Claim
64 words
Apparatus according to claim 1, wherein said biasing means include at least one pivotal lever having a fulcrum fixed with respect to said retainer plate and having a first portion displaced from said fulcrum and engaging the underside of said tray, said biasing means further including a spring secured to a second portion of said lever displaced from said fulcrum and said first portion.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |