US3598346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drying
Assignee: Jwi Ltd
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Filing: 1969-07-24
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Granted: 1971-08-10
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Expires: 1989-07-24
Abstract
Abstract A woven wire cloth for forming the surface of a drier drum and composed of warp and weft strands of 0.003- to 0.015-inch diameter and having a projected open area of 10 to 40 percent with the strands being made of a metal alloy having a mean coefficient of expansion of less than 2 X 10 6 inches/inch/* F. in a temperature range of 0* F. to 400* F.
Inventors
- 👤 John Gordon Buchanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:36
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; F26B13/16; D; D21; D21F; D21F5/00; D21F5/18; D21F5/182
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
17 words
A wire cloth, as defined in claim 1, wherein said cloth is formed by a semitwill weave.
Claim 2
Dependent Claim
38 words
A wire cloth, as defined in claim 2, wherein the number of said warp strands is in the range of 60-90 strands/lineal inch and the number of said weft strands is in the range of 40-70 strands/lineal inch.
Claim 3
Dependent Claim
17 words
A woven wire cloth, as defined in claim 3, wherein said metal alloy is a nickel-iron alloy.
Claim 4
Dependent Claim
45 words
A woven wire cloth, as defined in claim 3, wherein said cloth has a monoplanar surface which is in part defined by flat surfaces formed by grinding off high points on said wire to remove up to less than one-half the diameter of said strands.
Claim 5
Dependent Claim
45 words
A woven wire cloth, as defined in claim 4, wherein said cloth has a monoplanar surface which is in part defined by flat surface formed by grinding off high points on said wire to remove up to less than one-half the diameter of said strands.
Claim 6
Dependent Claim
182 words
In a web drier, a perforate drum, an inner woven wire layer adjacent peripheral surface of said drum, an intermediate woven wire layer overlying said inner layer, and an outer woven wire layer overlying said intermediate layer, said inner layer having a larger diameter wire strands than said outer layer, and having a larger open area than said outer layer, and said intermediate layer being made of wire of a diameter intermediate the diameter said inner and outer layers and having an open area intermediate said inner and outer layers, said outer layer being composed of warp and weft strands of 0.003- to 0.015-inch diameter, said warp and weft strands being spaced in the range of 25 to 100 strands per lineal inch, said woven wire of said outer layer having a projected open area in the range of 10-40 percent, said warp and said weft strands of said outside layer both being formed of a metal alloy having a mean coefficient of expansion of less than 2 X 10 6 inches/inch/* F. in the temperature of 0* F. to 400* F.
Claim 7
Dependent Claim
22 words
In a drier, as defined in claim 7, wherein said woven wire of said outside layer is formed with a semitwill weave.
Claim 8
Dependent Claim
55 words
In a drier, as defined in claim 8, wherein the number of said warp strands is in the range of 60-90 strands/lineal inch and the number of said weft strands is in the range of 40-70 strands/lineal inch. 10 In a drier, as defined in claim 9, wherein said metal alloy is a nickel-iron alloy.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |