US4231565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper feed device
Assignee: Canon Inc
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Filing: 1977-11-08
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Granted: 1980-11-04
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Expires: 1997-11-08
Abstract
Abstract In a paper feed device having a storage for storing thereon a pile of paper leaves and a device for feeding the paper leaves piled on the storage, there is provided separating apparatus for separating an uppermost one of the paper leaves to be fed by the feeding device from the other paper leaves and a blower disposed adjacent to the rear end of the piled paper leaves with respect to the direction of the feed thereof for blowing a flow of pressurized fluid in the direction of feed of the paper leaves. The blower is movable for retraction with respect to the rear end of the piled paper leaves.
Inventors
- 👤 Junji Ichikawa
- 👤 Yuji Takahashi
- 👤 Jun Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:22
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/46; B65H3/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A paper feed device comprising: means for storing a stack of paper leaves to be fed; means, located above said storage means, for feeding the topmost paper leaf on the stack in a forward direction; means, located at the front end of said storage means, for separating the topmost paper leaf from the stack to allow said feeding means to feed the topmost paper leaf only; blowing means for applying pressurized air from adjacent the rear end of the stack in the forward direction at a position remote from the topmost leaf to render the leaves easily separable from adjacent leaves; and control means for actuating said blowing means at a predetermined time after said feeding means starts to feed the topmost leaf from said stack.
Claim 2
Dependent Claim
126 words
A paper feed device comprising: means for storing a stack of paper leaves to be fed; means, located above said storage means, for feeding the topmost paper leaf on the stack in a forward direction; means, located at the front end of said storage means, for separating the topmost paper leaf from the stack to allow said feeding means to feed the topmost paper leaf only; blowing means for applying pressurized air from adjacent the rear end of the stack in the forward direction at a position remote from the topmost leaf to render the leaves easily separable from adjacent leaves; and control means for actuating said blowing means at a predetermined time after said feeding means starts to feed the topmost leaf from said stack.
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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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |