US3792682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coating
Assignee: Robinson Waxed Paper Co Ltd
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Filing: 1972-03-06
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Granted: 1974-02-19
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Expires: 1992-03-06
Abstract
Abstract An apparatus is described for applying coating material in a fluid state to a receptor surface (in the form of a moving web) through a porous member having a large number of fine drillings. The porous member may be a block of epoxy resin and a base plate of a chamber containing the epoxy resin block.
Inventors
- 👤 Raymond Harold Phipps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:45
CPC Classifications
B; B05; B05C; B05C1/00; B05C1/04; B05C5/00; B41; B41F; B41F31/00; B41F31/02; B41F31/027; B41F31/08; D; D21; D21H; D21H5/00; D21H5/0005
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
Apparatus for applying coating material in a fluid state to a moving web, which comprises: a chamber for receiving the fluid coating material, said chamber being defined by side walls and a substantially flat base plate, the lower portion of said chamber being filLed with a block member formed in place by pouring a hard setting material onto said base plate, said base plate and said block material being drilled simultaneously to provide therethrough a plurality of uniformly distributed, perfectly aligned pores of uniform bore, said pores providing direct fluid communication from said chamber to the moving web; means for dispensing coating material under pressure through said pores and onto the moving web; and means for disposing the web in a flat condition against said base plate, said means comprising a moving belt bearing on the underside of the moving web and a plurality of fluid jets acting on the underside of said belt.
Claim 2
Dependent Claim
154 words
Apparatus for applying coating material in a fluid state to a moving web, which comprises: a chamber for receiving the fluid coating material, said chamber being defined by side walls and a substantially flat base plate, the lower portion of said chamber being filLed with a block member formed in place by pouring a hard setting material onto said base plate, said base plate and said block material being drilled simultaneously to provide therethrough a plurality of uniformly distributed, perfectly aligned pores of uniform bore, said pores providing direct fluid communication from said chamber to the moving web; means for dispensing coating material under pressure through said pores and onto the moving web; and means for disposing the web in a flat condition against said base plate, said means comprising a moving belt bearing on the underside of the moving web and a plurality of fluid jets acting on the underside of said belt.
Claim 3
Dependent Claim
28 words
Apparatus according to claim 1 wherein said block member is formed in said chamber from a resinous material that is poured into said chamber and cured in situ.
Claim 4
Dependent Claim
16 words
Apparatus according to claim 1 wherein the said block is made of metal loaded epoxy resin.
Claim 5
Dependent Claim
18 words
Apparatus according to claim 3 wherein the diameter of the pores is of the order of 0.02 inch.
Claim 6
Dependent Claim
37 words
Apparatus according to claim 1, wherein said fluid jets comprise jets of pressurized air, and wherein said jets are directed against the underside of said belt at locations corresponding to the nip points of the coating apparatus.
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |