Patent US5161794A successfully refreshed from Google Patents.
US5161794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet conveying device with an overload protection feature
Assignee: Canon Inc
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Filing: 1991-06-11
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Granted: 1992-11-10
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Expires: 2011-06-11
Abstract
Abstract A sheet conveying device includes a first rotating member for providing a sheet with a conveying force by rotating while contacting the sheet, a second rotating member for pressing the sheet against the first rotating member, a driving member for providing a driving force of a driving source, and a drive transmission for transmitting the driving force of the driving rotating member to the first rotating member. The drive transmission will produce a slip between the first rotating member and the driving rotating member when a load operating on the first rotating member is greater than a predetermined value.
Inventors
- 👤 Nobukazu Adachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:47
CPC Classifications
B; B65; B65H; B65H5/00; B65H5/06; B65H5/062; B65H2601/00; B65H2601/10; B65H2601/11
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
144 words
A sheet conveying device comprising: a first rotating member for providing a sheet with a conveying force by rotating while in contact with the sheet; a second rotating member for pressing the sheet against said first rotating member; a driving member for applying a driving force to said first rotating member; a first surface rotating around a predetermined rotation axis in synchronization with said first rotating member, and inclined relative to a plane normal to said predetermined rotation axis; a second surface rotating around said predetermined rotation axis in synchronization with said driving member, and inclined relative to a plane normal to said predetermined rotation axis; and pushing means for pushing said first surface against said second surface wherein a slip between said first rotating member and said driving member occurs when a load operating on said first rotating member exceeds a predetermined value.
Claim 2
Dependent Claim
144 words
A sheet conveying device comprising: a first rotating member for providing a sheet with a conveying force by rotating while in contact with the sheet; a second rotating member for pressing the sheet against said first rotating member; a driving member for applying a driving force to said first rotating member; a first surface rotating around a predetermined rotation axis in synchronization with said first rotating member, and inclined relative to a plane normal to said predetermined rotation axis; a second surface rotating around said predetermined rotation axis in synchronization with said driving member, and inclined relative to a plane normal to said predetermined rotation axis; and pushing means for pushing said first surface against said second surface wherein a slip between said first rotating member and said driving member occurs when a load operating on said first rotating member exceeds a predetermined value.
Claim 3
Dependent Claim
21 words
A device according to claim 1, wherein said driving member and said first rotating member rotate around said predetermined rotation axis.
Claim 4
Dependent Claim
21 words
A device according to claim 2, wherein said first surface is formed at an end portion of said first rotating member.
Claim 5
Dependent Claim
34 words
A device according to claim 3, wherein said pushing means comprises a spring member for pushing an end of said first rotating member opposite to the end on which said first surface is located.
Claim 6
Dependent Claim
118 words
A sheet conveying device comprising: a conveying rotating member for providing a sheet with a conveying force by contacting the sheet; a shaft for rotatably supporting said conveying rotating member and having a longitudinal axis; a driving rotating member for applying a driving force to the shaft to rotate the conveying rotating member; a first surface formed on an end of the shaft supporting said conveying rotating member; and a second surface formed on said driving rotating member, wherein each of said first and second surfaces is inclined relative to a plane normal to the axis of said shaft, and driving force is transmitted from said driving rotating member to said shaft through said first and second surfaces.
Claim 7
Dependent Claim
118 words
A sheet conveying device comprising: a conveying rotating member for providing a sheet with a conveying force by contacting the sheet; a shaft for rotatably supporting said conveying rotating member and having a longitudinal axis; a driving rotating member for applying a driving force to the shaft to rotate the conveying rotating member; a first surface formed on an end of the shaft supporting said conveying rotating member; and a second surface formed on said driving rotating member, wherein each of said first and second surfaces is inclined relative to a plane normal to the axis of said shaft, and driving force is transmitted from said driving rotating member to said shaft through said first and second surfaces.
Claim 8
Dependent Claim
28 words
A device according to claim 5, further comprising pushing means for pushing against the other end of said shaft thereby urging said first surface against said second surface.
Claim 9
Dependent Claim
29 words
A device according to claim 5, wherein the incline of said first surface begins from a line intersecting the axis of said shaft at the end of the shaft.
Claim 10
Dependent Claim
111 words
A sheet conveying device comprising: a conveying rotating member for providing a sheet with a conveying force by contacting the sheet; a driving member for applying a driving force to said conveying rotating member; a first surface rotating around a predetermined rotation axis in synchronization with said conveying rotating member, and inclined relative to a plane normal to said predetermined rotation axis; and a second surface rotating around said predetermined rotation axis in synchronization with said driving member, and inclined relative to a plane normal to said predetermined rotation axis, wherein said driving force is transmitted from said driving member to said conveying rotating member through said first and second surfaces.
Claim 11
Dependent Claim
111 words
A sheet conveying device comprising: a conveying rotating member for providing a sheet with a conveying force by contacting the sheet; a driving member for applying a driving force to said conveying rotating member; a first surface rotating around a predetermined rotation axis in synchronization with said conveying rotating member, and inclined relative to a plane normal to said predetermined rotation axis; and a second surface rotating around said predetermined rotation axis in synchronization with said driving member, and inclined relative to a plane normal to said predetermined rotation axis, wherein said driving force is transmitted from said driving member to said conveying rotating member through said first and second surfaces.
Claim 12
Dependent Claim
19 words
A device according to claim 8, further comprising pushing means for pushing said first surface against said second surface.
Claim 13
Dependent Claim
34 words
A device according to claim 9, wherein said pushing means comprises a spring member for pushing an end of said conveying rotating member opposite to the end on which said first surface is located.
Claim 14
Dependent Claim
32 words
A device according to claim 8, wherein a slip between said first rotating member and said driving member occurs when a load operating on said first rotating member exceeds a predetermined value.
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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) | 1995-11-10 | 1996-05-11 | 1996-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-10 | 2000-05-11 | 2000-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-10 | 2004-05-11 | 2004-11-10 | $7700.00 | Window Closed / Lapsed |