Patent US3853677A successfully refreshed from Google Patents.
US3853677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll made of non-woven cloth
Assignee: Toho Yogyo Co Ltd
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Filing: 1973-01-02
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Granted: 1974-12-10
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Expires: 1993-01-02
Abstract
Abstract Fiber yarns such as polyester, nylon, and acrylicare mixed with, cotton or wool and resinous finder, and heat treated to make a non-woven cloth. The non-woven cloth is cut into disc elements which are stacked onto a shaft made of steel, plastics or wood. The laminated non-woven cloth elements are axially pressed together to form a roll having a Poisson''s ratio of 0.5 and a shearing stress of 1200 kg/cm2.
Inventors
- 👤 M Kai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:26
CPC Classifications
F; F16; F16C; F16C13/00; B; B29; B29D; B29D99/00; B29D99/0032; B29D99/0035; B29L; B29L2031/00; B29L2031/32; B29L2031/324
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
92 words
IN A ROLL COMPRISING A SHAFT HAVING AN AXIS AND A PLURALITY OF ANNULAR DISC ELEMENTS OF A NON-WOVEN FABRIC, THE FABRIC CONSISTING OF YARNS OF FIBERS OF A HIGH MOLECULAR SYNTHETIC RESIN MATERIAL AND OF NATURAL FIBERS, AND A RESINOUS MATERIAL BINDING THE YARNS TOGETHER, THE ELEMENTS BEING STACKED ON THE SHAFT AND AXIALLY PRESSED TOGETHER TO FORM THE ROLL, THE IMPROVEMENT COMPRISING THE ELEMENTS BEING HEAT TREATED AND AXIALLY PRESSED TOGETHER SO THAT THE ROLL HAS A POISSON''S RATIO OF ABOUT 0.5 AND A SHEARING STRESS OF ABOUT 1,200 KG/CM2.
Claim 2
Dependent Claim
92 words
IN A ROLL COMPRISING A SHAFT HAVING AN AXIS AND A PLURALITY OF ANNULAR DISC ELEMENTS OF A NON-WOVEN FABRIC, THE FABRIC CONSISTING OF YARNS OF FIBERS OF A HIGH MOLECULAR SYNTHETIC RESIN MATERIAL AND OF NATURAL FIBERS, AND A RESINOUS MATERIAL BINDING THE YARNS TOGETHER, THE ELEMENTS BEING STACKED ON THE SHAFT AND AXIALLY PRESSED TOGETHER TO FORM THE ROLL, THE IMPROVEMENT COMPRISING THE ELEMENTS BEING HEAT TREATED AND AXIALLY PRESSED TOGETHER SO THAT THE ROLL HAS A POISSON''S RATIO OF ABOUT 0.5 AND A SHEARING STRESS OF ABOUT 1,200 KG/CM2.
Claim 3
Dependent Claim
27 words
In the roll of claim 1, the roll having a hardness of 83* + or - 2* and a coefficient of water absorption of about 5.8 percent.
References Cited (Backward Citations)
US1973690A
Cited
US2801461A
Cited
US3730794A
Cited
US3588978A
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US3617445A
Cited
US3707752A
Cited
US3710469A
Cited
US3711913A
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |