US4020226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous friction material
Assignee: Individual
•
Filing: 1975-04-23
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Granted: 1977-04-26
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Expires: 1995-04-23
Abstract
Abstract The invention relates to fibrous friction material and to a process for the production of same. In accordance with the invention, said material comprises carbon fabric, a polymeric thermosetting binder, viz. polyoxyphenylmethanephenoxysiloxane of the formula [-Si {OC6H4 (CH2C6H3OH)n CH2C6H4OH}2-]m, WHERE N = 0-2; M = 10-100, AS WELL AS HEXAMETHYLENETETRAMINE AND BARIUM SULFATE, SAID COMPONENTS BEING TAKEN IN THE FOLLOWING PERCENTAGES BY WEIGHT:
Inventors
- 👤 Kuzma Andrianovich Andrianov
- 👤 Georgy Nikolaevich Bagrov
- 👤 Tatyana Vsevolodovna Vasilieva
- 👤 Vladimir Alexandrovich Vasjukov
- 👤 Sergei Ivanovich Lebedev
- 👤 Vladimir Alexandrovich Makarov
- 👤 Lotari Mikhailovich Khananashvili
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:52
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/023; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/30; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T442/00; Y10T442/20; Y10T442/2344; Y10T442/2926; Y10T442/2984
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A fibrous friction material, essentially consisting of carbon fabric; impregnated with a polymeric thermosetting binder, essentially consisting of polyoxyphenylmethanephenoxysiloxanes of the formula [-Si {OC.sub.6 H.sub.4 (CH.sub.2 C.sub.6 H.sub.3 OH).sub.n CH.sub.2 C.sub.6 H.sub.4 OH}.sub.2 -].sub.m, where n = 0-2; m = 10-100, hexamethylenetetramine, and barium sulfate; said components being present in the following percentages by weight: ______________________________________
polyoxyphenylmethanephenoxysiloxanes
10-40
hexamethylenetetramine 1-2.5
barium sulfate 15-30
carbon fabric the balance.
______________________________________
Claim 2
Dependent Claim
68 words
A fibrous friction material, essentially consisting of carbon fabric; impregnated with a polymeric thermosetting binder, essentially consisting of polyoxyphenylmethanephenoxysiloxanes of the formula [-Si {OC.sub.6 H.sub.4 (CH.sub.2 C.sub.6 H.sub.3 OH).sub.n CH.sub.2 C.sub.6 H.sub.4 OH}.sub.2 -].sub.m, where n = 0-2; m = 10-100, hexamethylenetetramine, and barium sulfate; said components being present in the following percentages by weight: ______________________________________
polyoxyphenylmethanephenoxysiloxanes
10-40
hexamethylenetetramine 1-2.5
barium sulfate 15-30
carbon fabric the balance.
______________________________________
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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |