US4668540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belting and method of making same
Assignee: Goodyear Tire and Rubber Co
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Filing: 1983-12-27
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Granted: 1987-05-26
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Expires: 2003-12-27
Abstract
Abstract Belting consisting of a compacted non-woven felt fabric embedded in a matrix of elastomer. The belting may be made by saturating a greige non-woven fabric with a liquid, elastomer-forming, polymeric resin and thereafter compacting the saturated fabric to permanently reduce the thickness thereof. Following compaction of the saturated fabric, the liquid resin is solidified and cured. Curing is preferably accomplished at a temperature above ambient and at a pressure above atmospheric. The non-woven felt may be a spun-bonded, needle-punched, or stitch-bonded bat of fibers.
Inventors
- 👤 Barry W. Long
- 👤 Peter J. Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:09
CPC Classifications
B; B29; B29D; B29D29/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
127 words
A method of manufacturing solid, high tensile strength belting comprising the following steps: (a) providing a greige non-woven felt fabric, (b) saturating the greige fabric with an amount of liquid, elastomer-forming, polymeric resin that is greater by weight than the weight of greige fabric, (c) compressing the saturated fabric to permanently reduce its thickness by about 20 percent to about 50 percent and to remove excess liquid resin, (d) soldifying the liquid resin saturating the greige fabric to form a solidified, resin saturated fabric, (e) applying a cover-forming layer of a liquid; elastomer forming, polymeric resin, (f) curing the solidified, resin-saturated fabric at an elevated temperature and pressure to form finished belting having longitudinal tensile strength exceeding the longitudinal tensile strength of the greige non-woven felt fabric.
Claim 2
Independent Claim
127 words
A method of manufacturing solid, high tensile strength belting comprising the following steps: (a) providing a greige non-woven felt fabric, (b) saturating the greige fabric with an amount of liquid, elastomer-forming, polymeric resin that is greater by weight than the weight of greige fabric, (c) compressing the saturated fabric to permanently reduce its thickness by about 20 percent to about 50 percent and to remove excess liquid resin, (d) soldifying the liquid resin saturating the greige fabric to form a solidified, resin saturated fabric, (e) applying a cover-forming layer of a liquid; elastomer forming, polymeric resin, (f) curing the solidified, resin-saturated fabric at an elevated temperature and pressure to form finished belting having longitudinal tensile strength exceeding the longitudinal tensile strength of the greige non-woven felt fabric.
Claim 3
Dependent Claim
28 words
The method of claim 1, wherein the fabric thickness in the finished belting is from about 75 percent to about 50 percent of that of the greige fabric.
Claim 4
Dependent Claim
20 words
The method of claim 1, wherein the fabric is further permanently reduced in thickness during curing of the solidified resin.
Claim 5
Dependent Claim
15 words
The method of claim 1, wherein the fabric is a non-woven bat of synthetic fibers.
References Cited (Backward Citations)
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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) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |