Patent US3588093A successfully refreshed from Google Patents.
US3588093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction feeder bar for warped sheets
Assignee: WARD TURNER MACHINERY CO
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Filing: 1968-10-25
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Granted: 1971-06-28
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Expires: 1988-10-25
Abstract
Abstract A SUCTION-TYPE FEEDER SYSTEM IS PROVIDED FOR REMOVING A SHEET FROM THE BOTTOM OF A STACK WHICH IS MOSTLY SUPPORTED IN AIR. THE ENDS OF THE STACK ARE ENGAGED WITH NARROW TAPERED MEMBERS CONTACTING THE EDGES THEREOF. A FEED BAR, UTILIZING A VACUUM, MOVES UNDER THE LOWERMOST SHEET OF THE STACK AND SUCKS IS DOWNWARDLY AND MOVES IT AWAY FROM THE ADJACENT TAPERED MEMBER INTO THE NIP OF FEED ROLLS. THE FEED BAR IS DISCONNECTED FROM THE VACUUM SUPPLY BY A VALVE TIMED SO AS TO DISCONTINUE ITS GRIP ON THE SHEET AT THIS LATER TIME.
Inventors
- 👤 Henry D Ward Jr
- 👤 William F Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:48
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/12; B65H3/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |