Patent US4030721A successfully refreshed from Google Patents.
US4030721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic manuscript discharging device for copying machines
Assignee: Xerox Ltd
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Filing: 1976-07-27
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Granted: 1977-06-21
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Expires: 1996-07-27
Abstract
Abstract An automatic document ejector for use with a copying machine wherein the document is automatically gripped along its lead edge as the platen cover is closed, the gripper being adapted to pull the document from the platen for ejection into a document receiving tray as the platen cover is lifted following completion of the copying cycle.
Inventors
- 👤 Takefumi Kurosaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:38
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/625; B; B65; B65H; B65H29/00; B65H29/02; B65H29/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
114 words
An automatic document ejection device adapted for incorporation in a platen cover of a copying machine having a platen glass for placement of documents to be exposed by the copying machine comprising: a pivotal cover overlying the platen glass; a rotatable, document discharging roller having a gripper for gripping the lead edge of a document placed on the platen glass a drive mechanism for rotating said discharging roller through a predetermined angle means for closing said gripper as said pivotal cover is closed; and for opening said gripper when said discharging roller is rotated through the predetermined angle said drive mechanism being activated as said pivotal cover is lifted to discharge the gripped document.
Claim 2
Dependent Claim
114 words
An automatic document ejection device adapted for incorporation in a platen cover of a copying machine having a platen glass for placement of documents to be exposed by the copying machine comprising: a pivotal cover overlying the platen glass; a rotatable, document discharging roller having a gripper for gripping the lead edge of a document placed on the platen glass a drive mechanism for rotating said discharging roller through a predetermined angle means for closing said gripper as said pivotal cover is closed; and for opening said gripper when said discharging roller is rotated through the predetermined angle said drive mechanism being activated as said pivotal cover is lifted to discharge the gripped document.
Claim 3
Dependent Claim
33 words
An automatic document ejecting device according to claim 1 further including a second roller adapted for cooperation with said discharging roller to transport the document being discharged following the opening of said gripper.
References Cited (Backward Citations)
US3790159A
Cited
US3901594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |