Patent US3684062A successfully refreshed from Google Patents.
US3684062A
Expired / Lapsed
US
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Friction lining composition
Assignee: NATIONAL FRICTION PRODUCTS CORP 1441 HOLLAND AVE LOGANSPORT IN A CORP OF
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Filing: 1971-01-29
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Granted: 1972-08-15
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Expires: 1991-01-29
Abstract
Abstract An improved friction lining composition for vehicle brakes and the like possessing controlled dynamic friction properties and comprising a reinforcing material, conventional fillers and/or friction-modifying additives, a bonding agent and a controlled amount of a particulated fluorocarbon plastic dispersed throughout the lining.
Inventors
- 👤 Howard R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:45
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/092; F16D65/08; F16D69/00; F16D69/02; F16D69/021; F16D69/022; F16D69/025; F16D69/026; C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/08; F16D2069/002
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
42 words
The brake assembly as defined in claim 1, wherein said fluorocarbon resin is present in the form of a plurality of irregularly-shaped particles ranging in size from about 20 mesh to about 40 mesh and distributed substantially uniformly throughout said friction element.
Claim 2
Dependent Claim
43 words
The brake assembly as defined in claim 1, wherein said fluorocarbon resin is present in the form of a plurality of irregularly shaped particles ranging in size from about 6 mesh to about 325 mesh and distributed substantially uniformly throughout said friction element.
Claim 3
Dependent Claim
21 words
The brake assembly as defined in claim 1, wherein said fluorocarbon resin is present in an amount of about 30 percent.
Claim 4
Dependent Claim
21 words
THe brake assembly as defined in claim 1, wherein said fluorocarbon resin is present in an amount of about 45 percent.
Claim 5
Dependent Claim
112 words
A vehicle brake assembly comprising a braking member and a friction member adapted to be disposed in frictional contact with said braking member during a braking action, said friction member including a composite friction element comprising a first section of a friction material comprising from about 10 to about 90 percent of a fibrous reinforcing material, up to about 80 percent of a particulated filler and from about 5 to about 60 percent binding agent; and a second section comprised of a fluorocarbon resin selected from the group consisting of polytetrafluoroethylene and fluorinated ethylene propylene, said first and said second section defining a composite face surface adapted to contact said braking member.
Claim 6
Dependent Claim
32 words
The brake assembly as defined in claim 6, in which said friction material of said first section further includes from about 5 to about 75 percent of said fluorocarbon resin distributed therethrough.
Claim 7
Dependent Claim
28 words
The brake assembly as defined in claim 6, in which said composite friction element comprises a plurality of said first and said second sections disposed in alternating relationship.
Claim 8
Dependent Claim
41 words
The brake assembly as defined in claim 6, wherein said first and said second section of said composite friction element extend inwardly of said composite face surface to a depth corresponding at least to the useful thickness of said friction element.
Claim 9
Dependent Claim
45 words
The brake assembly as defined in claim 6, in which said composite friction element is comprised of said first section formed with a plurality of cavities therein and wherein said second section is in the form of a plurality of inserts disposed in said cavities.
Claim 10
Dependent Claim
21 words
The brake assembly as defined in claim 10, wherein said inserts are mechanically interlocked in said cavities of said first section.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |