Patent US4174102A successfully refreshed from Google Patents.
US4174102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet separating and feeding apparatus
Assignee: Xerox Corp
•
Filing: 1977-07-01
•
Granted: 1979-11-13
•
Expires: 1997-07-01
Abstract
Abstract Improved sheet separating and feeding apparatus that opens or partially opens the retard nip after the sheet has partially passed through the retard nip.
Inventors
- 👤 Don P. Clausing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:46
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/02; B65H3/04; B65H3/042
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
139 words
An apparatus for feeding and separating individual sheets from a stack of sheets which comprises in combination: a belt member mounted adjacent the forward edge of the stack of sheets for feeding from the bottom of the stack; friction retard means positioned along said forward edge of the stack to allow feeding of only one sheet beneath said friction retard; sheet transport means positioned in the path to advance the sheets as they are fed by said belt member, said belt member being pivotable on an axis to move from a first position in contact with the bottom of the stack to a second position in a direction away from said stack whereby the retard forces on the sheet being fed are greatly reduced, wherein said sheet transport means includes a plurality of rolls coaxial with said pivot axis.
Claim 2
Independent Claim
139 words
An apparatus for feeding and separating individual sheets from a stack of sheets which comprises in combination: a belt member mounted adjacent the forward edge of the stack of sheets for feeding from the bottom of the stack; friction retard means positioned along said forward edge of the stack to allow feeding of only one sheet beneath said friction retard; sheet transport means positioned in the path to advance the sheets as they are fed by said belt member, said belt member being pivotable on an axis to move from a first position in contact with the bottom of the stack to a second position in a direction away from said stack whereby the retard forces on the sheet being fed are greatly reduced, wherein said sheet transport means includes a plurality of rolls coaxial with said pivot axis.
Claim 3
Dependent Claim
29 words
Apparatus according to claim 1 including baffle means positioned on the bottom of the stack to support said stack when the belt member is pivoted away from said stack.
Claim 4
Dependent Claim
19 words
Apparatus according to claim 2 wherein said baffle means is movable into and out of contact with said stack.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 1 including bail means positioned on top of said stack.
Claim 6
Dependent Claim
19 words
Apparatus according to claim 4 wherein said bail means is movable into and out of contact with said stack.
Claim 7
Dependent Claim
22 words
Apparatus according to claim 1 wherein said sheet transport means includes at least one idler roll in contact with said belt member.
Claim 8
Independent Claim
149 words
An apparatus for feeding and separating individual sheets from a stack of sheets which comprises in combination: a belt member mounted adjacent the forward edge of the stack of sheets for feeding from the bottom of the stack; friction retard means positioned along said forward edge of the stack to allow feeding of only one sheet beneath said friction retard; sheet transport means positioned in the sheet path to advance the sheets as they are being fed by said belt member, said belt member being pivotable on an axis to move from a first position in contact with the bottom of the stack to a second position in a direction away from said stack whereby the retard forces on the sheet being fed are greatly reduced; finger means in contact with said retard means to effect a proper nip when said belt member is pivoted away from said stack.
Claim 9
Independent Claim
149 words
An apparatus for feeding and separating individual sheets from a stack of sheets which comprises in combination: a belt member mounted adjacent the forward edge of the stack of sheets for feeding from the bottom of the stack; friction retard means positioned along said forward edge of the stack to allow feeding of only one sheet beneath said friction retard; sheet transport means positioned in the sheet path to advance the sheets as they are being fed by said belt member, said belt member being pivotable on an axis to move from a first position in contact with the bottom of the stack to a second position in a direction away from said stack whereby the retard forces on the sheet being fed are greatly reduced; finger means in contact with said retard means to effect a proper nip when said belt member is pivoted away from said stack.
Claim 10
Dependent Claim
20 words
Apparatus according to claim 7 wherein said finger means is movable into and out of contact with said retard means.
References Cited (Backward Citations)
US3108801A
Cited
US3523685A
Cited
US3485489A
Cited
US3734490A
Cited
US3990694A
Cited
US3895791A
Cited
US3934869A
Cited
US3944210A
Cited
US3949979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-12 | 1983-05-14 | 1983-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-12 | 1987-05-14 | 1987-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-12 | 1991-05-14 | 1991-11-13 | $7700.00 | Window Closed / Lapsed |