US4645192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feeder
Assignee: Toshiba Corp
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Filing: 1985-09-20
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Granted: 1987-02-24
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Expires: 2005-09-20
Abstract
Abstract A sheet feeder for feeding sheets one by one to a transfer path comprises feed rollers, aligning rollers, and a motor. Clutch mechanisms for transmitting the rotation of the motor are arranged individually between the motor and the feed rollers, and between the motor and the aligning rollers. Each of the clutch mechanisms includes a pair of connectors formed with mating indentations, the connectors being adapted for engagement with or disengagement from each other when the motor is stopped.
Inventors
- 👤 Junji Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:39
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6502; B; B65; B65H; B65H3/00; B65H3/02; B65H3/06; B65H3/0669; B65H3/44; B65H9/00; B65H2701/00; B65H2701/10; B65H2701/19; B65H2701/1912
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
202 words
A sheet feeder for feeding sheets one by one along a transfer path, comprising: feed roller means for delivering and feeding the sheets to the transfer path; aligning roller means disposed in the transfer path and adapted to align each sheet fed along the transfer path; a drive source for driving the feed roller means and the aligning roller means, said drive source including a motor with a driving shaft; and clutch means arranged between the drive source and both the feed roller means and the aligning roller means, and adapted to selectively transmit the driving force of the drive source to the feed roller means and the aligning roller means, said clutch means including a pair of connectors formed individually with sets of mating indentations, said pair of connectors being adapted for engagement with or disengagement from each other when the drive source is switched off, wherein said mating indentations formed on the pair of connectors are tooth-shaped, one of said pair of connectors being connected to the feed roller means and the other of said pair of connectors being connected to the aligning roller means, said pair of connectors being disposed in parallel with the driving shaft of the motor.
Claim 2
Dependent Claim
202 words
A sheet feeder for feeding sheets one by one along a transfer path, comprising: feed roller means for delivering and feeding the sheets to the transfer path; aligning roller means disposed in the transfer path and adapted to align each sheet fed along the transfer path; a drive source for driving the feed roller means and the aligning roller means, said drive source including a motor with a driving shaft; and clutch means arranged between the drive source and both the feed roller means and the aligning roller means, and adapted to selectively transmit the driving force of the drive source to the feed roller means and the aligning roller means, said clutch means including a pair of connectors formed individually with sets of mating indentations, said pair of connectors being adapted for engagement with or disengagement from each other when the drive source is switched off, wherein said mating indentations formed on the pair of connectors are tooth-shaped, one of said pair of connectors being connected to the feed roller means and the other of said pair of connectors being connected to the aligning roller means, said pair of connectors being disposed in parallel with the driving shaft of the motor.
Claim 3
Dependent Claim
52 words
A sheet feeder according to claim 1, wherein said clutch means is provided with a spring means for urging the pair of connectors to separate from each other, and an electromagnetic unit, adapted, when energized, to cause the connectors to engage each other in opposition to the urging force of the means.
Claim 4
Dependent Claim
26 words
A sheet feeder according to claim 1, wherein said feed roller means includes two rollers adapted to take out sheets of one size from cassette means.
Claim 5
Dependent Claim
27 words
A sheet feeder according to claim 3, wherein said feed roller means further includes manual insertion guide rollers for delivering manually fed sheets to the transfer path.
Claim 6
Dependent Claim
21 words
A sheet feeder according to claim 1, wherein said sheet feeder is used for feeding copying paper to a copying machine.
Claim 7
Dependent Claim
217 words
A sheet feeder for feeding sheets one by one along a transfer path, comprising: feed roller means for delivering and feeding the sheets to the transfer path; aligning roller means disposed in the transfer path and adapted to align each sheet fed along the transfer path; a drive source for driving the feed roller means and the aligning roller means, said drive source including a motor with a driving shaft; clutch means arranged between the drive source and both the feed roller means and the aligning roller means, and adapted to selectively transmit the driving force of the drive source to the feed roller means and the aligning roller means, said clutch means including a pair of connectors formed individually with sets of mating indentations, said pair of connectors being adapted for engagement with or disengagement from each other when the drive source is switched off, one of said pair of connectors being connected to the feed roller means and the other of said pair of connectors being connected to the aligning roller means, said pair of connectors being disposed in parallel with the driving shaft of the motor, said clutch means connecting the feed roller means and then the aligning roller means to the motor, thereby allowing selective transmission of the driving force of said motor.
Claim 8
Dependent Claim
217 words
A sheet feeder for feeding sheets one by one along a transfer path, comprising: feed roller means for delivering and feeding the sheets to the transfer path; aligning roller means disposed in the transfer path and adapted to align each sheet fed along the transfer path; a drive source for driving the feed roller means and the aligning roller means, said drive source including a motor with a driving shaft; clutch means arranged between the drive source and both the feed roller means and the aligning roller means, and adapted to selectively transmit the driving force of the drive source to the feed roller means and the aligning roller means, said clutch means including a pair of connectors formed individually with sets of mating indentations, said pair of connectors being adapted for engagement with or disengagement from each other when the drive source is switched off, one of said pair of connectors being connected to the feed roller means and the other of said pair of connectors being connected to the aligning roller means, said pair of connectors being disposed in parallel with the driving shaft of the motor, said clutch means connecting the feed roller means and then the aligning roller means to the motor, thereby allowing selective transmission of the driving force of said motor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |