US3683780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating apparatus
Assignee: Individual
•
Filing: 1970-08-19
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Granted: 1972-08-15
•
Expires: 1990-08-19
Abstract
Abstract An apparatus for treating or coating flexible sheet or film-like materials with a fluid. The material to be treated and the treating fluid move past an elongated and grooved plate member with the fluid between the material and the plate member. The grooves are closely spaced and extend in a direction normal to the path of the fluid.
Inventors
- 👤 Robert I Edelman
- 👤 Evan A Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:04
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
155 words
Apparatus for treating or coating flexible materials with fluids comprising, a plate member having a surface adapted to be contacted by said fluid, means for moving said material in one direction past said surface, means for supplying said fluid to said surface at one end thereof, whereby said fluid is in contact with said surface and said material, said fluid being at least partially moved along said surface by said material, said surface being provided with a plurality of grooves extending normal to said one direction, said grooves being separated by substantially flat surfacE portions, each of said grooves being formed by an inwardly directed surface portion at substantially a right angle to the adjacent flat surface portion at the upstream side of said groove, and an outwardly inclined surface portion merging at one end with said directed portion and at its other end with the adjacent flat surface portion at the downstream side thereof.
Claim 2
Dependent Claim
155 words
Apparatus for treating or coating flexible materials with fluids comprising, a plate member having a surface adapted to be contacted by said fluid, means for moving said material in one direction past said surface, means for supplying said fluid to said surface at one end thereof, whereby said fluid is in contact with said surface and said material, said fluid being at least partially moved along said surface by said material, said surface being provided with a plurality of grooves extending normal to said one direction, said grooves being separated by substantially flat surfacE portions, each of said grooves being formed by an inwardly directed surface portion at substantially a right angle to the adjacent flat surface portion at the upstream side of said groove, and an outwardly inclined surface portion merging at one end with said directed portion and at its other end with the adjacent flat surface portion at the downstream side thereof.
Claim 3
Dependent Claim
22 words
An apparatus for treating or coating flexible materials according to claim 1 wherein said surface in longitudinal cross section is slightly convex.
Claim 4
Dependent Claim
142 words
Apparatus for treating or coating flexible sheet or film materials with fluid substances comprising, an elongated shoe having a surface convex in cross section, means for supplying fluid to said surface at one end thereof, means for moving said material over said surface and in contact with said fluid, said fluid being at least partially moved along said surface by said material, said shoe being provided with a plurality of closely spaced transverse grooves, a substantially flat surface portion separating each pair of adjacent grooves, each of said grooves having an inwardly directed portion at substantially a right angle to the adjacent flat surface portion at the upstream side of said groove and an outwardly inclined portion merging at one end with said inwardly directed portion and at its other end with the adjacent flat surface portion at the downstream side thereof.
Claim 5
Dependent Claim
142 words
Apparatus for treating or coating flexible sheet or film materials with fluid substances comprising, an elongated shoe having a surface convex in cross section, means for supplying fluid to said surface at one end thereof, means for moving said material over said surface and in contact with said fluid, said fluid being at least partially moved along said surface by said material, said shoe being provided with a plurality of closely spaced transverse grooves, a substantially flat surface portion separating each pair of adjacent grooves, each of said grooves having an inwardly directed portion at substantially a right angle to the adjacent flat surface portion at the upstream side of said groove and an outwardly inclined portion merging at one end with said inwardly directed portion and at its other end with the adjacent flat surface portion at the downstream side thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |