Patent US3194554A successfully refreshed from Google Patents.
US3194554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double sheet detector for printing press
Assignee: Fairchild Semiconductor Corp
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Filing: 1962-08-22
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Granted: 1965-07-13
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Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Paul H Hilpman
- 👤 Raiff Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:25
CPC Classifications
B; B65; B65H; B65H7/00; B65H7/02; B65H7/06; B65H7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN A PRINTING PRESS HAVING A CONTINUOUSLY ROTATING LOWER FEED ROLLER AND AN UPPER FEED ROLLER INTERMITTENTLY MOVABLE INTO OPERATIVE RELATIONSHIP WITH THE LOWER FEED ROLLER TO ADVANCE A SHEET TO THE GRIPPER MECHANISM OF THE PRESS AND WHEREIN SHEETS ARE FED DIRECTLY FROM THE STACK OF SHEETS IN A SHEET FEEDER TO THE PRESS, THE COMBINATION WITH SAID FEED ROLLERS OF A DOUBLE SHEET DETECTOR COMPRISING A FIXED MEMBER ALIGNED WITH THE SURFACE OF SAID LOWER FEED ROLLER, A DETECTOR FOOT AXIALLY ALIGNED WITH SAID UPPER FEED ROLLER WHEN THE LATTER IS IN ITS OPERATIVE SHEET ADVANCING POSITION, AND MEANS FOR MOVING SAID DETECTOR FOOT INTO DOUBLE SHEET DETECTING POSITION WITH RESPECT TO SAID FIXED MEMBER AFTER SAID UPPER FEED ROLLER IS MOVED INTO SHEET ADVANCING POSITION AND OUT OF THE DOUBLE SHEET DETECTING POSITION PRIOR TO THE FEED OF A SUBSEQUENT SHEET.
Claim 2
Dependent Claim
144 words
IN A PRINTING PRESS HAVING A CONTINUOUSLY ROTATING LOWER FEED ROLLER AND AN UPPER FEED ROLLER INTERMITTENTLY MOVABLE INTO OPERATIVE RELATIONSHIP WITH THE LOWER FEED ROLLER TO ADVANCE A SHEET TO THE GRIPPER MECHANISM OF THE PRESS AND WHEREIN SHEETS ARE FED DIRECTLY FROM THE STACK OF SHEETS IN A SHEET FEEDER TO THE PRESS, THE COMBINATION WITH SAID FEED ROLLERS OF A DOUBLE SHEET DETECTOR COMPRISING A FIXED MEMBER ALIGNED WITH THE SURFACE OF SAID LOWER FEED ROLLER, A DETECTOR FOOT AXIALLY ALIGNED WITH SAID UPPER FEED ROLLER WHEN THE LATTER IS IN ITS OPERATIVE SHEET ADVANCING POSITION, AND MEANS FOR MOVING SAID DETECTOR FOOT INTO DOUBLE SHEET DETECTING POSITION WITH RESPECT TO SAID FIXED MEMBER AFTER SAID UPPER FEED ROLLER IS MOVED INTO SHEET ADVANCING POSITION AND OUT OF THE DOUBLE SHEET DETECTING POSITION PRIOR TO THE FEED OF A SUBSEQUENT SHEET.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |