US3195164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum tape scraper
Assignee: Control Data Corp
•
Filing: 1963-01-21
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Granted: 1965-07-20
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Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Gysling Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:44
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/04; G03D15/043; G11; G11B; G11B23/00; G11B23/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A VACUUM TAPE SCRAPER FOR CLEANING DIRT, NODULES AND OTHER IMPERFECTIONS FROM A MOVING MAGNETIC TAPE COMPRISING A SCRAPER HOUSING HAVING A HOLLOWED INTERIOR AND AN OPEN BOTTOM, A KNIFE EDGE ATTACHED TO SAID HOUSING AT THE OPEN BOTTOM THEREOF, SAID KNIFE EDGE DEFINED BY SURFACES AT SUBSTANTIAL ACUTE ANGLES WITH RESPECT TO THE DIRECTION OF MOVEMENT OF SAID TAPE TO PRESENT ONLY A POSITIVE CUTTING KNIFE EDGE TO THE TAPE, AND A VACUUM OUTLET COMMUNICATING WITH THE HOLLOWED INTERIOR OF SAID SCRAPER HOUSING, SAID SCRAPER BEING OPERATIVE ON THE APPLICATION OF A VACUUM TO SAID VACUUM OUTLET TO DRAW THE MOVING TAPE AGAINST SAID KNIFE EDGE TO THEREBY SEVER THE NODULES FROM THE TAPE AND TO DRAW THE DIRT, SEVERED NODULES AND OTHER IMPERFECTIONS AWAY FROM SAID TAPE.
Claim 2
Dependent Claim
129 words
A VACUUM TAPE SCRAPER FOR CLEANING DIRT, NODULES AND OTHER IMPERFECTIONS FROM A MOVING MAGNETIC TAPE COMPRISING A SCRAPER HOUSING HAVING A HOLLOWED INTERIOR AND AN OPEN BOTTOM, A KNIFE EDGE ATTACHED TO SAID HOUSING AT THE OPEN BOTTOM THEREOF, SAID KNIFE EDGE DEFINED BY SURFACES AT SUBSTANTIAL ACUTE ANGLES WITH RESPECT TO THE DIRECTION OF MOVEMENT OF SAID TAPE TO PRESENT ONLY A POSITIVE CUTTING KNIFE EDGE TO THE TAPE, AND A VACUUM OUTLET COMMUNICATING WITH THE HOLLOWED INTERIOR OF SAID SCRAPER HOUSING, SAID SCRAPER BEING OPERATIVE ON THE APPLICATION OF A VACUUM TO SAID VACUUM OUTLET TO DRAW THE MOVING TAPE AGAINST SAID KNIFE EDGE TO THEREBY SEVER THE NODULES FROM THE TAPE AND TO DRAW THE DIRT, SEVERED NODULES AND OTHER IMPERFECTIONS AWAY FROM SAID TAPE.
References Cited (Backward Citations)
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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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |