Patent US3103850A successfully refreshed from Google Patents.
US3103850A
Expired / Lapsed
US
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Pneumatically operated document sensing station
Assignee: International Business Machines Corp
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Filing: 1961-12-14
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Granted: 1963-09-17
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Expires: 1981-12-14
Abstract
No abstract record available.
Inventors
- 👤 Henri A Khoury
- 👤 Richard K Wilmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:12
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/60; F; F16; F16C; F16C32/00; F16C32/06; G03B27/522
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
DOCUMENT HANDLING APPARATUS COMPRISING, IN COMBINATION, A DOCUMENT STATION CONSISTING OF A PAIR OF AIR BEARING ELEMENTS HAVING OPPOSED PARALLEL SURFACES WITH AN AIR GAP THEREBETWEEN INTO WHICH AIR JETS ARE DIRECTED FROM EACH OF SAID PARALLEL SURFACES CREATING A GIVEN PRESSURE LEVEL, MEANS FOR MOVING A DOCUMENT INTO SAID AIR GAP THUS REDUCING SAID AIR GAP AND INCREASING SAID PRESSURE LEVEL, AND MEANS OPERABLE IN RESPONSE TO SAID INCREASE IN PRESSURE LEVEL FOR MOVING ONE OF SAID ELEMENTS IN A DIRECTION TO FURTHER REDUCE SAID AIR GAP.
Claim 2
Dependent Claim
88 words
DOCUMENT HANDLING APPARATUS COMPRISING, IN COMBINATION, A DOCUMENT STATION CONSISTING OF A PAIR OF AIR BEARING ELEMENTS HAVING OPPOSED PARALLEL SURFACES WITH AN AIR GAP THEREBETWEEN INTO WHICH AIR JETS ARE DIRECTED FROM EACH OF SAID PARALLEL SURFACES CREATING A GIVEN PRESSURE LEVEL, MEANS FOR MOVING A DOCUMENT INTO SAID AIR GAP THUS REDUCING SAID AIR GAP AND INCREASING SAID PRESSURE LEVEL, AND MEANS OPERABLE IN RESPONSE TO SAID INCREASE IN PRESSURE LEVEL FOR MOVING ONE OF SAID ELEMENTS IN A DIRECTION TO FURTHER REDUCE SAID AIR GAP.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |