Patent US4559258A successfully refreshed from Google Patents.
US4559258A
Expired / Lapsed
US
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Pressure belt for use with extended nip press in paper making machine
Assignee: Ichikawa Woolen Textile Co Ltd
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Filing: 1983-09-30
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Granted: 1985-12-17
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Expires: 2003-09-30
Abstract
Abstract A pressure belt for use with an extended nip press in paper making machine characterized by comprising a base fabric formed of a synthetic fiber filament, and formed with a synthetic resin layer on each outer and inner peripheral side thereof. The outer peripheral side which becomes in contact with the felt is provided with a number of drain channels. Such a construction is advantageous in improving a travelling stability of belt, dewatering efficiency of web of paper, etc.
Inventors
- 👤 Masao Kiuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:01
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/0209; D21F3/0218; D21F3/0227; B; B29; B29D; B29D29/00; D21F3/0236; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0809; B29L; B29L2031/00; B29L2031/733; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24562; Y10T428/2457; Y10T428/24579; Y10T428/24595; Y10T428/24603; Y10T428/24612; Y10T428/24628; Y10T428/24636; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
135 words
In a pressure belt for use with a paper making machine including an extended nip press having a press roll and a pressure shoe which are in surface contact with each other, said pressure belt travelling between said press roll and a pressure shoe and being forced towards the press roll by the pressure shoe so that a felt and a web of paper to be dewatered and carried on the felt are squeezed in the nip, said pressure belt characterized by comprising an endless base fabric formed of a synthetic fiber filament, and formed with a synthetic resin layer on each outer and inner side thereof, said outer side being provided with a number of drain channels on the surface of said outer side, said channels providing drainage without permitting leakage through the belt.
Claim 2
Dependent Claim
135 words
In a pressure belt for use with a paper making machine including an extended nip press having a press roll and a pressure shoe which are in surface contact with each other, said pressure belt travelling between said press roll and a pressure shoe and being forced towards the press roll by the pressure shoe so that a felt and a web of paper to be dewatered and carried on the felt are squeezed in the nip, said pressure belt characterized by comprising an endless base fabric formed of a synthetic fiber filament, and formed with a synthetic resin layer on each outer and inner side thereof, said outer side being provided with a number of drain channels on the surface of said outer side, said channels providing drainage without permitting leakage through the belt.
Claim 3
Dependent Claim
32 words
A pressure belt according to claim 1 wherein a pattern of the drain channels provided in the surface of the outer synthetic resin layer of the base fabric is a lattice-like pattern.
Claim 4
Dependent Claim
32 words
A pressure belt according to claim 1 wherein a pattern of the drain channels provided in the surface of the outer synthetic resin layer of the base fabric is a cross-like pattern.
Claim 5
Dependent Claim
26 words
A pressure belt according to claim 1 wherein at least the surface portion of the inner synthetic resin layer on the base fabric contains lubricating powder.
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) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |