US3341354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curtain coating method and apparatus for applying a non-uniform liquid coating material to sheet stock
Assignee: ConocoPhillips Co
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Filing: 1964-03-11
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Granted: 1967-09-12
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Expires: 1984-03-11
Abstract
No abstract record available.
Inventors
- 👤 Warren W Woods
- 👤 Travis L Gordy
- 👤 Politziner Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:40
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/66; D21H23/68; B; B05; B05C; B05C5/00; B05C5/002; B05C5/004; B05C5/005; D21H23/46; D21H23/48; Y; Y10; Y10S; Y10S118/00; Y10S118/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A CURTAIN COATING MACHINE OF THE TYPE HAVING A HOLLOW COATING HEAD PROVIDED WITH AN ELONGATED SLOT THEREIN FOR DISPENSING A GRAVITATING CURTAIN OF A LIQUID COATING MATERIAL, AND A PAIR OF ELONGATED, RIGID MEMBERS EXTENDING GENERALLY PARALLEL TO, AND SPACED FROM, EACH OTHER TO DEFINE SAID SLOT, THE IMPROVEMENT WHICH COMPRISES ONE OF SAID BARS HAVING A NOTCH THERIN FORMING A TRANSVERSE ENLARGEMENT OF SAID SLOT WHEREBY A LARGER AMOUNT OF SAID LIQUID COATING MATERIAL IS DISPERSED THROUGH SAID SLOT AT THE LOCATION OF SAID NOTCH THAN OVER THE REMAINING LENGTH OF SAID SLOT.
Claim 2
Dependent Claim
96 words
IN A CURTAIN COATING MACHINE OF THE TYPE HAVING A HOLLOW COATING HEAD PROVIDED WITH AN ELONGATED SLOT THEREIN FOR DISPENSING A GRAVITATING CURTAIN OF A LIQUID COATING MATERIAL, AND A PAIR OF ELONGATED, RIGID MEMBERS EXTENDING GENERALLY PARALLEL TO, AND SPACED FROM, EACH OTHER TO DEFINE SAID SLOT, THE IMPROVEMENT WHICH COMPRISES ONE OF SAID BARS HAVING A NOTCH THERIN FORMING A TRANSVERSE ENLARGEMENT OF SAID SLOT WHEREBY A LARGER AMOUNT OF SAID LIQUID COATING MATERIAL IS DISPERSED THROUGH SAID SLOT AT THE LOCATION OF SAID NOTCH THAN OVER THE REMAINING LENGTH OF SAID SLOT.
References Cited (Backward Citations)
US2274432A
Cited
US3074374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |