Patent US3890811A successfully refreshed from Google Patents.
US3890811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Padder-type apparatus for the continuous application of liquids to permeable materials
Assignee: Vepa AG
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Filing: 1973-09-10
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Granted: 1975-06-24
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Expires: 1993-09-10
Abstract
Abstract A padder-type apparatus for the continuous application of liquids to permeable, thick, voluminous web-shaped textile materials which includes support means for the material to be wetted, the support means being capable of being placed under a suction draft at several series disposed narrow suction zones extending over the operating width of the support means and printing stencil means operatively associated with said zones positioned on the side facing the material conveyed across these zones for applying said liquids thereto.
Inventors
- 👤 Hans Fleissner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:46
CPC Classifications
D; D06; D06B; D06B11/00; D06B11/0056; D06B11/0066; Y; Y10; Y10S; Y10S68/00; Y10S68/903
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
A padder-type apparatus for the continuous application of liquid to permeable, thick voluminous, web-shaped materials including tufted carpets and needled-felt carpets, plush and the like textile material, said apparatus comprising at least one sieve drum means having a gas-permeable surface with an operating width for supporting and for conveying the material to be wetted with said liquid, said sieve drum means having an interior placed under a suction draft and means within said interior for defining a plurality of series-disposed, narrow, suction zones extending across the operating width of said sieve drum means, and a plurality of printing stencil means each operatively associated with one of said suction zones positioned on one side of the material conveyed across said zones for applying said liquid thereto, whereby said liquid is drawn into the material by an intense suction draft applied at said suction zones.
Claim 2
Dependent Claim
143 words
A padder-type apparatus for the continuous application of liquid to permeable, thick voluminous, web-shaped materials including tufted carpets and needled-felt carpets, plush and the like textile material, said apparatus comprising at least one sieve drum means having a gas-permeable surface with an operating width for supporting and for conveying the material to be wetted with said liquid, said sieve drum means having an interior placed under a suction draft and means within said interior for defining a plurality of series-disposed, narrow, suction zones extending across the operating width of said sieve drum means, and a plurality of printing stencil means each operatively associated with one of said suction zones positioned on one side of the material conveyed across said zones for applying said liquid thereto, whereby said liquid is drawn into the material by an intense suction draft applied at said suction zones.
Claim 3
Dependent Claim
32 words
The apparatus of claim 1, in which each of the printing stencil means is arranged to apply said liquid onto said material as the material initially passes over the associated suction zone.
Claim 4
Dependent Claim
81 words
The apparatus of claim 2, in which said means defining said narrow suction zones comprises cover sheet means providing vacant slots forming said suction zones extending across the operating width of the sieve drum means and providing sheet portions extending between said slots, said sheet portions being at least partially gas-permeable in a region of the sieve drum means covered by the textile material whereby a partial suction draft sufficient to hold said textile material against said gas-permeable surface is provided.
Claim 5
Dependent Claim
40 words
The apparatus of claim 3, in which said sieve drum means is also provided with another cover sheet means which is not gas-permeable and which extends over a region of the sieve drum means free of contact with said material.
Claim 6
Dependent Claim
62 words
The apparatus of claim 3, in which the sheet portions of the cover sheet means in the region of the sieve drum means covered by the material consists of two perforated metal sheets extending in parallel to each other, one of said sheets being displaceable in order to vary the amount of suction draft, by covering the perforations of the other sheet.
Claim 7
Dependent Claim
70 words
The apparatus of claim 1, in which said interior of said sieve drum means also includes means for applying a suction draft to portions of the material being conveyed on said gas-permeable surface, less intense than the suction draft applied to the material overlying those portions of the gas-permeable surface superjacent to said suction zones, said less intense suction draft being sufficient to retain said material on said gas-permeable surface.
References Cited (Backward Citations)
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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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |