US3314729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic belt device utilizing backpulsing or forward-pulsing
Assignee: International Business Machines Corp
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Filing: 1964-04-27
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Granted: 1967-04-18
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Expires: 1984-04-27
Abstract
No abstract record available.
Inventors
- 👤 Heard K Baumeister
- 👤 Anthony W Orlando
- 👤 William B Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:06
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/008; G11B15/00; G11B15/18; G11B15/38; G11B15/675; G11B15/68; G11B15/6895
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
MEANS FOR MAINTAINING THE EXTENSION OF AN ENDLESS BELT BEING TRANSPORTED, COMPRISING A HEADER FOR TRANSPORTING SAID ENTIRE BELT UNDER PNEUMATIC ACTUATION, MEANS FOR PROVIDING A DIFFERENTIAL PRESSURE BETWEEN LEADING AND TRAILING ENDS OF THE ENDLESS BELT TO MOVE IT ALONG SAID HEADER IN THE DIRECTION OF THE LOWER PRESSURE SIDE OF SAID DIFFERENTIAL PRESSURE, AND PRESSURE CONTROL MEANS FOR LOWERING THE DIFFERENTIAL PRESSURE ON THE ENDLESS BELT TO INSURE AN EXTENDED FORM OF SAID ENDLESS BELT.
Claim 2
Dependent Claim
77 words
MEANS FOR MAINTAINING THE EXTENSION OF AN ENDLESS BELT BEING TRANSPORTED, COMPRISING A HEADER FOR TRANSPORTING SAID ENTIRE BELT UNDER PNEUMATIC ACTUATION, MEANS FOR PROVIDING A DIFFERENTIAL PRESSURE BETWEEN LEADING AND TRAILING ENDS OF THE ENDLESS BELT TO MOVE IT ALONG SAID HEADER IN THE DIRECTION OF THE LOWER PRESSURE SIDE OF SAID DIFFERENTIAL PRESSURE, AND PRESSURE CONTROL MEANS FOR LOWERING THE DIFFERENTIAL PRESSURE ON THE ENDLESS BELT TO INSURE AN EXTENDED FORM OF SAID ENDLESS BELT.
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |