Patent US5507899A successfully refreshed from Google Patents.
US5507899A
Expired / Lapsed
US
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Method of manufacturing an endless belt for a dewatering press
Assignee: Yamauchi Corp
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Filing: 1994-07-08
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Granted: 1996-04-16
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Expires: 2014-07-08
Abstract
Abstract An endless belt in which a fibrous material is dispersed in a substantially uniform manner all over an endless elastic body layer is provided. A non-woven tape is impregnated with a polyurethane elastomer material liquid and wound and layered on a supporting belt, and then, after curing the polyurethane elastomer material liquid to form an elastic body, it is removed from supporting belt.
Inventors
- 👤 Atsuo Watanabe
- 👤 Kenjiro Nakayama
- 👤 Takahisa Hikida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:09
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/0209; D21F3/0218; D21F3/0227; B; B29; B29D; B29D29/00; D21F3/0236; B29L; B29L2031/00; B29L2031/733; Y; Y10; Y10S; Y10S162/00; Y10S162/901; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1082; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1317; Y10T428/1321; Y10T428/1334; Y10T428/1338; Y10T428/1352; Y10T428/1355; Y10T428/1359; Y10T428/1369; Y10T428/1372; Y10T428/1386; Y10T428/1397; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24132
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
207 words
A method of manufacturing an endless belt for a dewatering press, comprising the steps of: impregnating a liquid elastic body precursor into a fibrous material tape; winding and layering said fibrous material tape impregnated with said elastic body precursor on a supporter having an endless peripheral surface, the winding of the fibrous material tape forming an inner side adjacent the supporter; arranging at least one reinforcing body on the fibrous material tape during the step of winding and layering, the reinforcing body being arranged in at least one row and being varying in distance from the supporter such that the at least one row is inclined and non-parallel to the inner side adjacent the supporter; during arranging of the at least one reinforcing body, the reinforcing body being wound on the fibrous material tape such that after winding and layering is completed, the reinforcing body that has been wound is closer to the inner side of the fibrous material tape, which is adjacent the supporter, than to the outer peripheral side of the completed winding of the fibrous material tape; curing said elastic body precursor impregnated in said layered fibrous material tape to form an elastic body layer; and removing said elastic body layer from said supporter.
Claim 2
Independent Claim
207 words
A method of manufacturing an endless belt for a dewatering press, comprising the steps of: impregnating a liquid elastic body precursor into a fibrous material tape; winding and layering said fibrous material tape impregnated with said elastic body precursor on a supporter having an endless peripheral surface, the winding of the fibrous material tape forming an inner side adjacent the supporter; arranging at least one reinforcing body on the fibrous material tape during the step of winding and layering, the reinforcing body being arranged in at least one row and being varying in distance from the supporter such that the at least one row is inclined and non-parallel to the inner side adjacent the supporter; during arranging of the at least one reinforcing body, the reinforcing body being wound on the fibrous material tape such that after winding and layering is completed, the reinforcing body that has been wound is closer to the inner side of the fibrous material tape, which is adjacent the supporter, than to the outer peripheral side of the completed winding of the fibrous material tape; curing said elastic body precursor impregnated in said layered fibrous material tape to form an elastic body layer; and removing said elastic body layer from said supporter.
Claim 3
Dependent Claim
26 words
The method of manufacturing an endless belt for a dewatering press according to claim 1, wherein said supporter having an endless peripheral surface is a roll.
Claim 4
Dependent Claim
36 words
The method of manufacturing an endless belt for a dewatering press according to claim 1, wherein said supporter having an endless peripheral surface includes a pair of rolls and a supporting belt provided between said rolls.
Claim 5
Dependent Claim
29 words
The method of manufacturing an endless belt for a dewatering press according to claim 1, wherein said fibrous material tape is wound on said supporter in a helical manner.
Claim 6
Dependent Claim
42 words
The method of manufacturing an endless belt for a dewatering press according to claim 1, further comprising the step of cutting and grinding an outer peripheral surface of said elastic body layer with said elastic body layer being wound on said supporter.
Claim 7
Dependent Claim
46 words
The method of manufacturing an endless belt for a dewatering press according to claim 5, wherein said step of cutting and grinding includes the step of forming grooves along a circumferential direction on the outer peripheral surface of said elastic body layer which has been ground.
Claim 8
Dependent Claim
30 words
The method of manufacturing an endless belt for a dewatering press according to claim 1, wherein a mold release agent is applied on said endless peripheral surface of said supporter.
Claim 9
Dependent Claim
48 words
The method of manufacturing an endless belt for a dewatering press according to claim 1, wherein said step of arranging at least one reinforcing body on the fibrous material tape comprises arranging yarn bodies on said fibrous material tape while winding said fibrous material tape on said supporter.
Claim 10
Dependent Claim
54 words
The method of manufacturing an endless belt for a dewatering press according to claim 8, wherein said reinforcing yarn bodies are arranged on said fibrous material tape which is to be placed on the side of said supporter when said reinforcing yarn bodies are wound on said supporter together with said fibrous material tape.
Claim 11
Dependent Claim
50 words
The method of manufacturing an endless belt for a dewatering press according to claim 1, wherein said step of arranging at least one reinforcing body on the fibrous material tape comprises arranging a net material body on said fibrous material tape while winding said fibrous material tape on said supporter.
Claim 12
Dependent Claim
51 words
The method of manufacturing an endless belt for a dewatering press according to claim 1, wherein said step of winding said fibrous material tape on said supporter includes the step of further winding a second fibrous material tape on said supporter on which the first fibrous material tape has already wound.
Claim 13
Dependent Claim
50 words
The method of manufacturing an endless belt for a dewatering press according to claim 11, wherein said second fibrous material tape further wound on said supporter is impregnated with an elastic body precursor different from said elastic body precursor impregnated in said first fibrous material tape wound on said supporter.
Claim 14
Dependent Claim
24 words
The method of manufacturing an endless belt for a dewatering press according to claim 1, wherein said fibrous material tape is a non-woven tape.
Claim 15
Dependent Claim
60 words
The method of manufacturing an endless belt for a dewatering press according to claim 1, wherein the step of impregnating a liquid elastic body precursor comprises the step of moving the fibrous material tape through a container having the liquid elastic body precursor in a liquid, non-gaseous state, the fibrous material tape being immersed in the liquid elastic body precursor.
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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) | 1999-04-16 | 1999-10-16 | 2000-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-16 | 2003-10-16 | 2004-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-16 | 2007-10-16 | 2008-04-16 | $7700.00 | Window Closed / Lapsed |