US3176893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum buffer tank
Assignee: Potter Instrument Co Inc
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Filing: 1962-08-20
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Granted: 1965-04-06
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Expires: 1982-08-20
Abstract
No abstract record available.
Inventors
- 👤 Robert E Schoeneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:29
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/56; G11B15/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
IN AN INFORMATION PROCESSING APPARATUS, A VACUUM TAPE-STORAGE CHAMBER COMPRISING, A SUBSTANTIALLY ENCLOSED RECEPTACLE HAVING A PRESELECTED DEPTH AND AN OPENING TO RECEIVE A LOOP OF TAPE, A FIRST PLURALITY OF VACUUM PORT OPENINGS ARRANGED IN A PREDETERMINED PATTERN IN ONE WALL OF THE RECEPTACLE AND LOCATED A PREDTERMINED DISTANCE WITHIN THE RECEPTACLE FROM THE TAPE LOOP OPENING IN THE MID REGION OF THE CHAMBER WALL, AND A SECOND PLURALITY OF VACUUM PORT OPENINGS ARRANGED IN A PREDETERMINED PATTERN IN ONE WALL OF THE RECEPTACLE AND LOCATED AT A DEPTH WITHIN THE RECEPTACLE GREATER THAN THE DEPTH OF SAID FIRST PLURALITY IN THE BOTTOM REGION OF THE CHAMBER WALL SO THAT THE SECOND PLURALITY OF VACUUM PORT OPENINGS IN SPACED FROM SAID FIRST PLURALITY OF VACUUM PORT OPENINGS BY AN IMPERFORATE SECTION OF SAID ONE WALL OF THE VACUUM CHAMBER, SAID ONE WALL BEING A WALL IN A PLANE NORMAL TO THE TRANSVERSE DIMENSION OF A TAPE, WHEREBY A TAPE LOOP STORED IN SAID RECEPTACLE IN SUBJECT TO A VACUUM PULL OF TWO DIFFERENT MAGNITUDES.
Claim 2
Dependent Claim
175 words
IN AN INFORMATION PROCESSING APPARATUS, A VACUUM TAPE-STORAGE CHAMBER COMPRISING, A SUBSTANTIALLY ENCLOSED RECEPTACLE HAVING A PRESELECTED DEPTH AND AN OPENING TO RECEIVE A LOOP OF TAPE, A FIRST PLURALITY OF VACUUM PORT OPENINGS ARRANGED IN A PREDETERMINED PATTERN IN ONE WALL OF THE RECEPTACLE AND LOCATED A PREDTERMINED DISTANCE WITHIN THE RECEPTACLE FROM THE TAPE LOOP OPENING IN THE MID REGION OF THE CHAMBER WALL, AND A SECOND PLURALITY OF VACUUM PORT OPENINGS ARRANGED IN A PREDETERMINED PATTERN IN ONE WALL OF THE RECEPTACLE AND LOCATED AT A DEPTH WITHIN THE RECEPTACLE GREATER THAN THE DEPTH OF SAID FIRST PLURALITY IN THE BOTTOM REGION OF THE CHAMBER WALL SO THAT THE SECOND PLURALITY OF VACUUM PORT OPENINGS IN SPACED FROM SAID FIRST PLURALITY OF VACUUM PORT OPENINGS BY AN IMPERFORATE SECTION OF SAID ONE WALL OF THE VACUUM CHAMBER, SAID ONE WALL BEING A WALL IN A PLANE NORMAL TO THE TRANSVERSE DIMENSION OF A TAPE, WHEREBY A TAPE LOOP STORED IN SAID RECEPTACLE IN SUBJECT TO A VACUUM PULL OF TWO DIFFERENT MAGNITUDES.
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |