US2737688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tow opening device
Assignee: Eastman Kodak Co
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Filing: 1953-05-25
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Granted: 1956-03-13
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Expires: 1973-05-25
Abstract
No abstract record available.
Inventors
- 👤 Wallace T Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:34
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A TOW OPENING DEVICE COMPRISING, IN COMBINATION, A HOLLOW BOXLIKE MEMBER, A PAIR OF SPACED PARALLEL WALLS POSITIONED IN SAID MEMBER TO FORM A NARROW SLOT THROUGH WHICH SAID TOW IS MOVED, SAID BOXLIKE MEMBER COMPRISING A PLENUM CHAMBER POSITIONED ON AT LEAST ONE SIDE OF SAID SLOT, THE WALL ADJACENT SAID CHAMBER HAVING A NARROW ORIFICE WHICH EXTENDS SUBSTANTIALLY THE FULL WIDTH OF SAID MEMBER FOR CONNECTING SAID CHAMBER IN FLUID COMMUNICATION WITH SAID SLOT, AND SAID ORIFICE HAVING SIDE WALLS CONVERGING TOWARD SAID SLOT FOR DIRECTING AIR FROM SAID CHAMBER AND INTO SAID SLOT TO IMPINGE SAID TOW IN SAID SLOT IN A DIRECTION PERPENDICULARLY TO THE DIRECTION OF MOVEMENT OF THE TOW THROUGH SAID SLOT, AND MEANS FOR CONDUCTING AIR UNDER PRESSURE INTO SAID CHAMBER.
Claim 2
Dependent Claim
128 words
A TOW OPENING DEVICE COMPRISING, IN COMBINATION, A HOLLOW BOXLIKE MEMBER, A PAIR OF SPACED PARALLEL WALLS POSITIONED IN SAID MEMBER TO FORM A NARROW SLOT THROUGH WHICH SAID TOW IS MOVED, SAID BOXLIKE MEMBER COMPRISING A PLENUM CHAMBER POSITIONED ON AT LEAST ONE SIDE OF SAID SLOT, THE WALL ADJACENT SAID CHAMBER HAVING A NARROW ORIFICE WHICH EXTENDS SUBSTANTIALLY THE FULL WIDTH OF SAID MEMBER FOR CONNECTING SAID CHAMBER IN FLUID COMMUNICATION WITH SAID SLOT, AND SAID ORIFICE HAVING SIDE WALLS CONVERGING TOWARD SAID SLOT FOR DIRECTING AIR FROM SAID CHAMBER AND INTO SAID SLOT TO IMPINGE SAID TOW IN SAID SLOT IN A DIRECTION PERPENDICULARLY TO THE DIRECTION OF MOVEMENT OF THE TOW THROUGH SAID SLOT, AND MEANS FOR CONDUCTING AIR UNDER PRESSURE INTO SAID CHAMBER.
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) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |