US4400418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical covering fabric for a damping form roller of an offset printing machine
Assignee: MMT Inc
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Filing: 1982-06-07
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Granted: 1983-08-23
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Expires: 2002-06-07
Abstract
Abstract A cylindrical covering fabric for a damping form roller of an offset printing machine is manufactured by weaving, as ground yarn, yarns composed of polyurethane fibers drafted to at least twice of free length, water-soluble fibers and water-insoluble fibers coiling around the above-mentioned polyurethane fiber and water-soluble fiber and, as pile yarn, hydrophilic fibers. The covering fabric is firmly mounted on a damping form roller by immersing the roller covered by the fabric in water to remove the water-soluble fibers from the ground yarns, followed by shrinking of the polyurethane fibers.
Inventors
- 👤 Hirofumi Takeda
- 👤 Hirobumi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:46
CPC Classifications
D; D03; D03D; D03D3/00; D03D3/02; B; B41; B41N; B41N7/00; B41N7/04; D02; D02G; D02G3/00; D02G3/02; D02G3/04; D02G3/22; D02G3/32; D02G3/328; D02G3/40; D02G3/404; D02G3/406; D03D15/00; D04; D04B; D04B1/00; D04B1/02; D04B1/04; D04B1/14; D04B1/18; B41N2207/00; B41N2207/02; B41N2207/14; D10; D10B; D10B2321/00; D10B2321/06; D10B2331/00; D10B2331/04; D10B2331/10; D10B2401/00; D10B2401/02; D10B2401/022; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1362; Y10T428/23907; Y10T428/23979; Y10T428/249921; Y10T428/249922; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2925
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
53 words
A cylindrical covering fabric for a damping form roller of an offset printing machine, which comprises ground yarns and hydrophilic pile yarns woven together, said ground yarn being composed of polyurethane fibers drawn to at least twice their free length, water-soluble fibers and water-insoluble fibers coiling around said polyurethane fibers and water-soluble fibers.
Claim 2
Dependent Claim
53 words
A cylindrical covering fabric for a damping form roller of an offset printing machine, which comprises ground yarns and hydrophilic pile yarns woven together, said ground yarn being composed of polyurethane fibers drawn to at least twice their free length, water-soluble fibers and water-insoluble fibers coiling around said polyurethane fibers and water-soluble fibers.
Claim 3
Dependent Claim
17 words
A cylindrical covering fabric of claim 1, in which said water-soluble fibers are water-soluble polyvinyl alcohol fibers.
Claim 4
Dependent Claim
20 words
A cylindrical covering fabric of claim 1, in which said water-insoluble fibers are polyester fibers or water-insoluble polyvinyl alcohol fibers.
Claim 5
Dependent Claim
22 words
A cylindrical covering fabric of claim 1, in which polyurethane fibers have been drawn to 2 to 5 times their free length.
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) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |