US3972394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction material
Assignee: Bendix Corp
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Filing: 1975-09-08
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Granted: 1976-08-03
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Expires: 1995-09-08
Abstract
Abstract An organic friction pad having iron powder particles added thereto to provide thermal stability when used with a copper rotor to maintain a substantially uniform coefficient of friction up to 550 DEG F.
Inventors
- 👤 Michael George Jacko
- 👤 Bruce William Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:24
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
182 words
An organic friction lining pad for use with a copper rotor in a braking system having a composition consisting of: 10-15 percent by weight of phenolic resin; 25-45 percent by weight of asbestos fiber; 10-15 percent by weight of an organic friction modifier selected from a group consisting of rubber scrap, latex, molasses and asphaltic base materials; 3-12 percent by weight of a carbonaceous material selected from a group consisting of graphite and carbon; 15-30 percent by weight of an inorganic friction modifier selected from a group consisting of barytes, whiting, talc and rottenstone; 3-7 percent by weight of an abrasive particle selected from a group consisting of silica, magnesium oxide, zircon, mullite, and alumina; and 7-15 percent by weight of iron powder particles, said phenolic resin being cured to form a binder for retaining said asbestos fiber, organic friction modifiers, inorganic friction modifiers, carbonaceous materials, abrasive particles, and iron powder particles in a fixed relationship to provide said pad with inherent thermal energy absorption capabilities aligned with said copper rotor and maintain a substantially uniform coefficient of friction up to 550°F.
Claim 2
Dependent Claim
182 words
An organic friction lining pad for use with a copper rotor in a braking system having a composition consisting of: 10-15 percent by weight of phenolic resin; 25-45 percent by weight of asbestos fiber; 10-15 percent by weight of an organic friction modifier selected from a group consisting of rubber scrap, latex, molasses and asphaltic base materials; 3-12 percent by weight of a carbonaceous material selected from a group consisting of graphite and carbon; 15-30 percent by weight of an inorganic friction modifier selected from a group consisting of barytes, whiting, talc and rottenstone; 3-7 percent by weight of an abrasive particle selected from a group consisting of silica, magnesium oxide, zircon, mullite, and alumina; and 7-15 percent by weight of iron powder particles, said phenolic resin being cured to form a binder for retaining said asbestos fiber, organic friction modifiers, inorganic friction modifiers, carbonaceous materials, abrasive particles, and iron powder particles in a fixed relationship to provide said pad with inherent thermal energy absorption capabilities aligned with said copper rotor and maintain a substantially uniform coefficient of friction up to 550°F.
Claim 3
Dependent Claim
17 words
The organic friction lining pad, as recited in claim 1, wherein said inorganic friction modifier is barytes.
Claim 4
Dependent Claim
16 words
The organic friction lining pad, as recited in claim 2, wherein said abrasive particle is alumina.
Claim 5
Dependent Claim
21 words
The organic friction lining pad, as recited in claim 3, wherein said iron powder particle size of less than 20 mesh.
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) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |