US3190263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doctor blade assembly for coating flexible sheet materials
Assignee: Sunoco Inc
•
Filing: 1961-07-31
•
Granted: 1965-06-22
•
Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Steven G Belak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:09
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/08; D21H25/10; D21H5/00; D21H5/0005; D21H5/006; D21H5/0062; D21H5/0065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A DOCTOR BLADE ASSEMBLY FOR OPERATING ON A MOVING FLEXIBLE SHEET MATERIAL COATED WITH AN ADHERENT, THIN, SUBSTANTIALLY-FLUID FILM OF A NORMALLY-SOLID COATING COMPOSITION, COMPRISING WAX AND A SUBSTANTIAL PROPORTION OF A RELATIVELY HIGH MOLECULAR WEIGHT POLYMER WHICH IS VERY VISCOUS WHEN IN THE MOLTEN STATE, SAID ASSEMBLY COMPRISING, IN COMBINATION: (A) TWO ELONGATED DOCTOR BLADES OF RIGID MATERIAL, EACH OF SAID BLADES HAVING ONE LONGITUDINAL EDGE BEVELED AT AN ANGLE OF ABOUT 30* FROM THE TRANSVERSE AXIS OF THE BLADE TO A POINT NOT CLOSER THAN ABOUT 0.01 INCH TO THE OPPOSITE FACE OF THE BLAD; AND (B) MEANS FOR HOLDING SAID BLADES IN A LONGITUDINALLY-OPPOSED, TRANSVERSELY-ADJUSTABLE, COPLANAR RELATIONSHIP, AND IN A POSITION SUCH THAT THE LONGITUDINAL AXES OF THE BLADES ARE SUBSTANTIALLY PERPENDICULAR TO THE DIRECTION OF SHEET MATERIAL MOVEMENT WITH THE BEVELED EDGES OF SAID BLADES BEING OPPOSED AND ORIENTED SO THAT THE BEVELS FACE AGAINST THE DIRECTION OF SHEET MATERIAL MOVEMENT, THE SAID HOLDING MEANS ALSO PERMITTING ROATABLE ADJUSTMENT OF THE COMMON PLANE OF THE BLADES IN AN ARC PERPENDICULAR TO THE PLANE OF THE BALDES.
Claim 2
Dependent Claim
180 words
A DOCTOR BLADE ASSEMBLY FOR OPERATING ON A MOVING FLEXIBLE SHEET MATERIAL COATED WITH AN ADHERENT, THIN, SUBSTANTIALLY-FLUID FILM OF A NORMALLY-SOLID COATING COMPOSITION, COMPRISING WAX AND A SUBSTANTIAL PROPORTION OF A RELATIVELY HIGH MOLECULAR WEIGHT POLYMER WHICH IS VERY VISCOUS WHEN IN THE MOLTEN STATE, SAID ASSEMBLY COMPRISING, IN COMBINATION: (A) TWO ELONGATED DOCTOR BLADES OF RIGID MATERIAL, EACH OF SAID BLADES HAVING ONE LONGITUDINAL EDGE BEVELED AT AN ANGLE OF ABOUT 30* FROM THE TRANSVERSE AXIS OF THE BLADE TO A POINT NOT CLOSER THAN ABOUT 0.01 INCH TO THE OPPOSITE FACE OF THE BLAD; AND (B) MEANS FOR HOLDING SAID BLADES IN A LONGITUDINALLY-OPPOSED, TRANSVERSELY-ADJUSTABLE, COPLANAR RELATIONSHIP, AND IN A POSITION SUCH THAT THE LONGITUDINAL AXES OF THE BLADES ARE SUBSTANTIALLY PERPENDICULAR TO THE DIRECTION OF SHEET MATERIAL MOVEMENT WITH THE BEVELED EDGES OF SAID BLADES BEING OPPOSED AND ORIENTED SO THAT THE BEVELS FACE AGAINST THE DIRECTION OF SHEET MATERIAL MOVEMENT, THE SAID HOLDING MEANS ALSO PERMITTING ROATABLE ADJUSTMENT OF THE COMMON PLANE OF THE BLADES IN AN ARC PERPENDICULAR TO THE PLANE OF THE BALDES.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |