US4416559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus, mountable on an office machine, for feeding single sheets from a paper stack stored in a magazine
Assignee: Individual
•
Filing: 1980-10-15
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Granted: 1983-11-22
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Expires: 2000-10-15
Abstract
Abstract The invention relates to an apparatus for feeding single sheets from a stack of paper stored in a magazine to the platen of an office machine. The apparatus is capable of being mounted on the office machine, the drive of a separate-feed roller frictionally engaging the stack of paper being effected by means of the platen in such a manner that when the platen is rotated counter to the direction in which the paper is inserted, the separate-feed roller is driven in the direction of paper insertion. In order to prevent the separate-feed roller from hindering paper insertion by the platen, the magazine pivotally engages a control cam. The control cam is driven by the platen in such a manner that it pivots the magazine against the separate-feed roller when the platen is rotated counter to the direction of paper insertion; when the platen is rotated in the direction of paper insertion, the control cam pivots the magazine away from contact with the separate-feed roller.
Inventors
- 👤 Helmut Steinhilber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:05
CPC Classifications
B; B41; B41J; B41J11/00; B41J11/58; B41J13/00; B41J13/0009; B41J13/0018; B41J13/02; B41J13/03; B41J13/10; B41J13/103
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
217 words
An apparatus, mountable on an office machine, for feeding single sheets from a stack of paper stored in a magazine (20) to a platen (14) of the office machine having a separate-feed roller (28) frictionally engaging the stack of paper, having a drive wheel (18) driven, when the apparatus is mounted, by the platen (14), and having a gear mechanism (40, 42, 46) connecting said drive wheel (18) with said separate-feed roller (28) in such a manner that upon the rotation of the platen (14) counter to the paper insertion direction said separate-feed roller (28) is driven in the paper insertion direction, wherein said magazine (20) is pivotally supported and is in engagement with a control cam (34), and said control cam (34) is movable by said drive wheel (18) via said gear mechanism (40, 42, 46) in such a manner that upon the rotation of the platen (14) counter to the paper insertion direction said control cam (34) pivots said magazine (20) into a position in which the stack of paper (24) rests against said separate-feed roller (28), and upon rotation of the platen (14) in the paper insertion direction said control cam (34) pivots said magazine (20) into a position in which the stack of paper (24) does not rest against said separate-feed roller (28).
Claim 2
Independent Claim
217 words
An apparatus, mountable on an office machine, for feeding single sheets from a stack of paper stored in a magazine (20) to a platen (14) of the office machine having a separate-feed roller (28) frictionally engaging the stack of paper, having a drive wheel (18) driven, when the apparatus is mounted, by the platen (14), and having a gear mechanism (40, 42, 46) connecting said drive wheel (18) with said separate-feed roller (28) in such a manner that upon the rotation of the platen (14) counter to the paper insertion direction said separate-feed roller (28) is driven in the paper insertion direction, wherein said magazine (20) is pivotally supported and is in engagement with a control cam (34), and said control cam (34) is movable by said drive wheel (18) via said gear mechanism (40, 42, 46) in such a manner that upon the rotation of the platen (14) counter to the paper insertion direction said control cam (34) pivots said magazine (20) into a position in which the stack of paper (24) rests against said separate-feed roller (28), and upon rotation of the platen (14) in the paper insertion direction said control cam (34) pivots said magazine (20) into a position in which the stack of paper (24) does not rest against said separate-feed roller (28).
Claim 3
Dependent Claim
55 words
An apparatus as defined in claim 1, characterized in that said control cam (34) extends in a circumferential direction on a plate rotatably coupled to a wheel (44) of said gear mechanism by a slip coupling (45), said plate having a circumference, said control cam (34) being restricted by stops and increasing radially in size.
Claim 4
Dependent Claim
40 words
An apparatus as defined by claim 2, characterized in that said control cam (34) is embodied as an indented portion of said circumference, a pickup stylus (36) of said magazine (20) resting thereon under the tension of a spring (38).
Claim 5
Dependent Claim
31 words
An apparatus as defined in claim 2, characterized in that said control cam is embodied as an oblong slit (35) which is engaged by a pickup stylus of said magazine (20).
Claim 6
Dependent Claim
35 words
An apparatus as defined by claim 1 characterized in that said separate-feed roller (28) and said control cam (34) are driven by said drive wheel (18) by means of a single, common toothed belt (46).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |