Patent US3220723A successfully refreshed from Google Patents.
US3220723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction pick up with air bearing
Assignee: Control Data Corp
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Filing: 1963-09-25
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Granted: 1965-11-30
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Expires: 1983-09-25
Abstract
No abstract record available.
Inventors
- 👤 Rabinow Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:43
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/0808; B65H3/0816; B65H29/00; B65H29/24; B65H29/241; B65H3/14; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/421; B65H2301/4212
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A SHEET TRANSPORT TO PICK UP AND TO MOVE SHEETS WITHOUT TOUCHING THEM DURING PICK UP AND MOVING, SAID TRANSPORT COMPRISINGG A SUCTION HEAD HAVING A SHEET CONFRONTING SURFACE ADAPTED TO CONFRONT THE SURFACE OF A SHEET, A SUCTION CHAMBER IN SAID HEAD AND ADAPTED TO BE CONNECTED WITH A SUCTION SOURCE, SAID CHAMBER HAVING A SUCTION OPENING IN SAID CONFRONTING SURFACE, MEANS TO MOVE SAID HEAD TO A POSITION AT WHICH SAID SHEET CONFRONTING SURFACE IN ADJACENT TO THE SURFACE OF THE SHEET SO THAT THE VACUUM IN THE REGION OF SAID SURFASCE DRAWS SAID SHEET TOWARD SAID HEAD, PNEUMATIC PRESSURE CONDUCTING MEANS PREVENTING CONTACT OF THE SHEET WITH SAID HEAD BY PROVIDING A LAYER OF AIR THEREBETWEEN AND LOCALIZED IN THE REGION OF THE EDGES OF SAID OPENING, THE PULLING PRESSURE EXERTED ON SAID SHEET AS A RESULT OF THE SUCTION OF SAID OPENING BEING GREATER THAN THE PNEUMATIC PRESSURE APPLIED TO SAID SHEET BY SAID PRESSURE CONDUCTING MEANS SO THAT UPON MOVEMENT OF SAID HEAD SAID SHEET IS MOVED THEREWITH, AND SAID HEAD MOVING MEANS MOVING SAID HEAD WITH THE SHEET SO SUPPORTED.
Claim 2
Dependent Claim
186 words
A SHEET TRANSPORT TO PICK UP AND TO MOVE SHEETS WITHOUT TOUCHING THEM DURING PICK UP AND MOVING, SAID TRANSPORT COMPRISINGG A SUCTION HEAD HAVING A SHEET CONFRONTING SURFACE ADAPTED TO CONFRONT THE SURFACE OF A SHEET, A SUCTION CHAMBER IN SAID HEAD AND ADAPTED TO BE CONNECTED WITH A SUCTION SOURCE, SAID CHAMBER HAVING A SUCTION OPENING IN SAID CONFRONTING SURFACE, MEANS TO MOVE SAID HEAD TO A POSITION AT WHICH SAID SHEET CONFRONTING SURFACE IN ADJACENT TO THE SURFACE OF THE SHEET SO THAT THE VACUUM IN THE REGION OF SAID SURFASCE DRAWS SAID SHEET TOWARD SAID HEAD, PNEUMATIC PRESSURE CONDUCTING MEANS PREVENTING CONTACT OF THE SHEET WITH SAID HEAD BY PROVIDING A LAYER OF AIR THEREBETWEEN AND LOCALIZED IN THE REGION OF THE EDGES OF SAID OPENING, THE PULLING PRESSURE EXERTED ON SAID SHEET AS A RESULT OF THE SUCTION OF SAID OPENING BEING GREATER THAN THE PNEUMATIC PRESSURE APPLIED TO SAID SHEET BY SAID PRESSURE CONDUCTING MEANS SO THAT UPON MOVEMENT OF SAID HEAD SAID SHEET IS MOVED THEREWITH, AND SAID HEAD MOVING MEANS MOVING SAID HEAD WITH THE SHEET SO SUPPORTED.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |