Patent US4130537A successfully refreshed from Google Patents.
US4130537A
Expired / Lapsed
US
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Asbestos free friction element
Assignee: FRICTION MATERIAL Co Inc
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Filing: 1977-02-02
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Granted: 1978-12-19
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Expires: 1997-02-02
Abstract
Abstract A composition for use in forming an asbestos free friction element includes a cross-linkable polymeric binder and glass fibers with a sufficient amount of an infusible organic fiber to mitigate the aggressive behavior of the friction element during operation.
Inventors
- 👤 George J. Bohrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:20
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; F16D69/026; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T442/00; Y10T442/20; Y10T442/2344
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
66 words
In a composition for use in forming an asbestos free friction element which exhibits aggressive behavior during operation, said composition including a cross-linkable polymeric binder and glass fibers, the improvement comprising: infusible organic fibers in said composition to mitigate said aggressive behavior, said infusible organic fibers being present in the range of 10 to 185 percent by weight based on the weight of the glass fibers.
Claim 2
Dependent Claim
66 words
In a composition for use in forming an asbestos free friction element which exhibits aggressive behavior during operation, said composition including a cross-linkable polymeric binder and glass fibers, the improvement comprising: infusible organic fibers in said composition to mitigate said aggressive behavior, said infusible organic fibers being present in the range of 10 to 185 percent by weight based on the weight of the glass fibers.
Claim 3
Dependent Claim
30 words
The improvement of claim 1 wherein: said infusible organic fibers are present in the range of 33 to 67 percent by weight based on the weight of the glass fibers.
Claim 4
Dependent Claim
26 words
The improvement of claim 1 wherein: said infusible organic fibers are selected from the group consisting of cotton, jute, hemp, sisal, rayon, wool and aramid fibers.
Claim 5
Dependent Claim
12 words
The improvement of claim 3 wherein: said infusible organic fibers are cotton.
Claim 6
Dependent Claim
67 words
In a composition for use in forming a friction element, said composition including a cross-linkable polymeric binder and reinforcing constitutents, the improvement wherein said composition is asbestos-free and said reinforcing constituents comprise: infusible organic fibers and RFL-coated glass fibers in contact with said cross-linkable polymeric binder, the ratio by weight of said infusible organic fibers to said glass fibers being in the range of 10:90 to 65:35.
Claim 7
Dependent Claim
67 words
In a composition for use in forming a friction element, said composition including a cross-linkable polymeric binder and reinforcing constitutents, the improvement wherein said composition is asbestos-free and said reinforcing constituents comprise: infusible organic fibers and RFL-coated glass fibers in contact with said cross-linkable polymeric binder, the ratio by weight of said infusible organic fibers to said glass fibers being in the range of 10:90 to 65:35.
Claim 8
Dependent Claim
26 words
The improvement of claim 5 wherein: the ratio by weight of said infusible organic fibers to glass fibers is in the range of 25:75 to 40:60.
Claim 9
Dependent Claim
26 words
The improvement of claim 5 wherein said infusible organic fibers are selected from the group consisting of cotton, jute, hemp, sisal, rayon, wool and aramid fibers.
Claim 10
Dependent Claim
12 words
The improvement of claim 7 wherein: said infusible organic fibers are cotton.
Claim 11
Dependent Claim
28 words
The improvement of claim 5 wherein: said RFL is present in the range of 5 to 50 percent by weight based on the weight of the glass fibers.
Claim 12
Dependent Claim
28 words
The improvement of claim 9 wherein: said RFL is present in the range of 15 to 35 percent by weight based on the weight of the glass fibers.
Claim 13
Dependent Claim
63 words
In an intermediate, shaped article for use in forming an asbestos-free friction element which exhibits aggressive behavior during operation, said article including a cross-linkable polymeric binder and glass fibers, the improvement comprising: infusible organic fibers in said article to mitigate said aggressive behavior, said infusible organic fibers being present in the range of 10 to 185 percent by weight of the glass fibers.
Claim 14
Dependent Claim
63 words
In an intermediate, shaped article for use in forming an asbestos-free friction element which exhibits aggressive behavior during operation, said article including a cross-linkable polymeric binder and glass fibers, the improvement comprising: infusible organic fibers in said article to mitigate said aggressive behavior, said infusible organic fibers being present in the range of 10 to 185 percent by weight of the glass fibers.
Claim 15
Dependent Claim
30 words
The improvement of claim 11 wherein: said infusible organic fibers are present in the range of 33 to 67 percent by weight based on the weight of the glass fibers.
Claim 16
Dependent Claim
26 words
The improvement of claim 11 wherein: said infusible organic fibers are selected from the group consisting of cotton, jute, hemp, sisal, rayon, wool and aramid fibers.
Claim 17
Dependent Claim
12 words
The improvement of claim 13 wherein: said infusible organic fibers are cotton.
Claim 18
Dependent Claim
55 words
In an intermediate shaped article for use in forming a friction element, said article including reinforcing constitutents impregnated with a cross-linkable polymeric binder, the improvement wherein said article is asbestos-free and said reinforcing constituents comprise: infusible organic fibers and elastomer coated glass fibers present in a weight ratio in the range of 10:90 to 65:35.
Claim 19
Dependent Claim
55 words
In an intermediate shaped article for use in forming a friction element, said article including reinforcing constitutents impregnated with a cross-linkable polymeric binder, the improvement wherein said article is asbestos-free and said reinforcing constituents comprise: infusible organic fibers and elastomer coated glass fibers present in a weight ratio in the range of 10:90 to 65:35.
Claim 20
Dependent Claim
26 words
The improvement of claim 15 wherein: the ratio by weight of said infusible organic fibers to glass fibers is in the range of 25:75 to 40:60.
Claim 21
Dependent Claim
26 words
The improvement of claim 15 wherein: said infusible organic fibers are selected from the group consisting of cotton, jute, hemp, sisal, rayon, wool and aramid fibers.
Claim 22
Dependent Claim
12 words
The improvement of claim 17 wherein: said infusible organic fibers are cotton.
Claim 23
Dependent Claim
30 words
The improvement of claim 15 wherein: said elastomer is RFL which is present in the range of 5 to 50 percent by weight based on the weight of the glass.
Claim 24
Dependent Claim
27 words
The improvement of claim 19 wherein: said RFL is present in the range of 15 to 35 percent by weight based on the weight of the glass.
Claim 25
Dependent Claim
19 words
The improvement of claim 15 wherein: said infusible organic fibers and glass fibers are in the form of yarn.
Claim 26
Dependent Claim
35 words
The improvement of claim 21 wherein: at least one strand of said infusible organic yarn and at least one strand of said glass yarn are in a substantially side-by-side relationship in the form of tape.
Claim 27
Dependent Claim
21 words
The improvement of claim 20 wherein: said infusible organic yarn and said glass yarn are woven together to form a fabric.
Claim 28
Dependent Claim
62 words
In an asbestos free friction element which exhibits aggressive behavior during operation, having a cross-linked polymeric matrix and having dispersed therethrough glass fibers, the improvement comprising: infusible organic fibers dispersed throughout said element to mitigate said aggressive behavior, said infusible organic fibers being present in the range of 10 to 185 percent by weight based on the weight of said glass fibers.
Claim 29
Dependent Claim
62 words
In an asbestos free friction element which exhibits aggressive behavior during operation, having a cross-linked polymeric matrix and having dispersed therethrough glass fibers, the improvement comprising: infusible organic fibers dispersed throughout said element to mitigate said aggressive behavior, said infusible organic fibers being present in the range of 10 to 185 percent by weight based on the weight of said glass fibers.
Claim 30
Dependent Claim
49 words
In a friction element having a matrix including a cross-linked polymeric binder and having dispersed therethrough reinforcing constituents, the improvement wherein: said element is asbestos-free and said reinforcing constituents comprise: infusible organic fibers and RFL-coated glass fibers present in a weight ratio in the range of 10:90 to 65:35.
Claim 31
Dependent Claim
49 words
In a friction element having a matrix including a cross-linked polymeric binder and having dispersed therethrough reinforcing constituents, the improvement wherein: said element is asbestos-free and said reinforcing constituents comprise: infusible organic fibers and RFL-coated glass fibers present in a weight ratio in the range of 10:90 to 65:35.
Claim 32
Dependent Claim
19 words
The improvement of claim 25 wherein: said RFL is in bonding relationship with said fibrous glass and said matrix.
Claim 33
Dependent Claim
61 words
In an asbestos-free friction element including a cross-linked polymeric binder and glass fibers the improvement comprising: said element containing infusible organic fibers to reduce aggressiveness during the operation of said element, said infusible organic fibers being present in said element in the range of 10 to 185 percent by weight based on the weight of said glass fibers in said element.
Claim 34
Dependent Claim
61 words
In an asbestos-free friction element including a cross-linked polymeric binder and glass fibers the improvement comprising: said element containing infusible organic fibers to reduce aggressiveness during the operation of said element, said infusible organic fibers being present in said element in the range of 10 to 185 percent by weight based on the weight of said glass fibers in said element.
Claim 35
Dependent Claim
52 words
In a friction element having a matrix including a cross-linked polymeric binder and having dispersed therethrough fibrous reinforcing constituents, the improvement wherein: said element is asbestos free and said reinforcing constituents comprise 25 to 40 parts by weight cotton fibers; and 60 to 75 parts by weight glass fibers which are RFL-coated.
Claim 36
Dependent Claim
52 words
In a friction element having a matrix including a cross-linked polymeric binder and having dispersed therethrough fibrous reinforcing constituents, the improvement wherein: said element is asbestos free and said reinforcing constituents comprise 25 to 40 parts by weight cotton fibers; and 60 to 75 parts by weight glass fibers which are RFL-coated.
Claim 37
Dependent Claim
21 words
The friction element of claim 28 wherein: said reinforcing constituents comprise 30 to 65 percent by weight of the friction element.
Claim 38
Dependent Claim
56 words
In a composition for use in forming an asbestos-free friction element which exhibits aggressive behavior during operation, said composition including a cross-linkable polymeric binder and glass fibers, the improvement comprising: infusible organic fibers present in said composition in the range of 2 to 50 percent by weight based on the total weight of said improved composition.
Claim 39
Dependent Claim
56 words
In a composition for use in forming an asbestos-free friction element which exhibits aggressive behavior during operation, said composition including a cross-linkable polymeric binder and glass fibers, the improvement comprising: infusible organic fibers present in said composition in the range of 2 to 50 percent by weight based on the total weight of said improved composition.
Claim 40
Dependent Claim
13 words
The improvement of claim 30 wherein: said range is 7.5 to 25 percent.
Claim 41
Dependent Claim
62 words
In a composition for use in forming a friction element, said composition including a cross-linkable polymeric binder and reinforcing constituents, the improvement wherein said composition is asbestos-free and said reinforcing constituents comprise: infusible organic fibers and glass fibers which taken together are present in the range of 20 to 75 percent by weight based on the total weight of said improved composition.
Claim 42
Dependent Claim
62 words
In a composition for use in forming a friction element, said composition including a cross-linkable polymeric binder and reinforcing constituents, the improvement wherein said composition is asbestos-free and said reinforcing constituents comprise: infusible organic fibers and glass fibers which taken together are present in the range of 20 to 75 percent by weight based on the total weight of said improved composition.
Claim 43
Dependent Claim
13 words
The improvement of claim 32 wherein: said range is 30 to 65 percent.
Claim 44
Dependent Claim
68 words
In an intermediate, shaped article for use in forming an asbestos-free friction element which exhibits aggressive behavior during operation, said article including a cross-linkable polymeric binder and glass fibers, the improvement comprising: infusible organic fibers in said article to mitigate said aggressive behavior, said infusible organic fibers being present in the range of 2 to 50 percent by weight based on the total weight of said improved article.
Claim 45
Dependent Claim
68 words
In an intermediate, shaped article for use in forming an asbestos-free friction element which exhibits aggressive behavior during operation, said article including a cross-linkable polymeric binder and glass fibers, the improvement comprising: infusible organic fibers in said article to mitigate said aggressive behavior, said infusible organic fibers being present in the range of 2 to 50 percent by weight based on the total weight of said improved article.
Claim 46
Dependent Claim
13 words
The improvement of claim 34 wherein: said range is 7.5 to 25 percent.
Claim 47
Dependent Claim
67 words
In an intermediate shaped article for use in forming a friction element, said article including reinforcing constituents impregnated with a cross-linkable polymeric binder, the improvement wherein said article is asbestos-free and said reinforcing constituents comprise: infusible organic fibers and elastomer coated glass fibers which taken together and present in the range of 20 to 75 percent by weight based on the total weight of said improved article.
Claim 48
Dependent Claim
67 words
In an intermediate shaped article for use in forming a friction element, said article including reinforcing constituents impregnated with a cross-linkable polymeric binder, the improvement wherein said article is asbestos-free and said reinforcing constituents comprise: infusible organic fibers and elastomer coated glass fibers which taken together and present in the range of 20 to 75 percent by weight based on the total weight of said improved article.
Claim 49
Dependent Claim
13 words
The improvement of claim 36 wherein: said range is 30 to 65 percent.
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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) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |