US3743069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass fiber friction element
Assignee: Johns Manville Corp
•
Filing: 1971-06-24
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Granted: 1973-07-03
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Expires: 1991-06-24
Abstract
Abstract A friction material, such as a clutch facing, formed of continuous bundle of parallel continuous glass fibers spirally or randomly wound upon themselves in the form of an annular disc impregnated with heat curable cement and having brass wires helically disposed around the bundles.
Inventors
- 👤 I Barnett
- 👤 W Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:34
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/34; B29C70/347; B29C70/54; B29C70/542; C; C03; C03C; C03C25/00; C03C25/10; C03C25/12; C03C25/16; F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; F16D69/026; B29K; B29K2309/00; B29K2309/08
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
13 words
The invention according to claim 1 wherein the filament means is heat conductive.
Claim 2
Dependent Claim
12 words
The invention according to claim 2 wherein the filament means is metallic.
Claim 3
Dependent Claim
12 words
The invention according to claim 3 wherein the filament means is nonferrous.
Claim 4
Dependent Claim
13 words
The invention according to claim 4 wherein the filament means is brass wire.
Claim 5
Dependent Claim
78 words
A friction facing consisting essentially of: an annular disc-like body formed of a spirally wound continuous bundle, said bundle comprising numerous longitudinally coextensive generally parallel continuous glass fibers impregnated with a heat curable cement and having heat conductive metallic filament means helically applied about the bundle, said filament means including portions lying adjacent a friction engaging surface of the facing and also including portions running to deep within the facing body for conducting frictional heat thereinto for dissipation.
Claim 6
Dependent Claim
13 words
The invention according to claim 6 wherein the filament means is brass wire.
Claim 7
Dependent Claim
92 words
A clutch facing consisting essentially of: a disc-like body formed of a continuous bundle of numerous longitudinally coextensive generally parallel continuous glass fibers spirally wound upon itself in the plane of the body, said bundle of glass fibers being impregnated with a heat curable cement, said bundle throughout its spiral arrangement having heat conductive filament means helically disposed thereabout, said helically disposed filament means having portions adapted for exposure to a friction face for absorbing frictional heat and being continuous with portions extending deep into the body for dissipation of heat thereinto.
Claim 8
Dependent Claim
13 words
The invention according to claim 8 wherein the heat conductive filament is brass.
Claim 9
Dependent Claim
56 words
A friction facing consisting essentially of: an annular flat body formed of a generally randomly wound continuous bundle of continuous longitudinally coextensive generally parallel glass fibers, said bundle impregnated with a heat curable cement composition, filament means helically encircling portions of the periphery of the continuous bundle substantially throughout its length for retaining the glass fibers.
Claim 10
Dependent Claim
13 words
The invention according to claim 10 wherein the filament means is heat conductive.
Claim 11
Dependent Claim
12 words
The invention according to claim 11 wherein the filament means is metallic.
Claim 12
Dependent Claim
12 words
The invention according to claim 12 wherein the filament means is nonferrous.
Claim 13
Dependent Claim
13 words
The invention according to claim 13 wherein the filament means is brass wire.
Claim 14
Dependent Claim
78 words
A friction facing consisting essentially of: an annular disc-like body formed of a randomly wound continuous bundle, said bundle comprising numerous longitudinally coextensive generally parallel continuous glass fibers impregnated with a heat curable cement and having heat conductive metallic filament means helically applied about the bundle, said filament means including portions lying adjacent a friction engaging surface of the facing and also including portions running to deep within the facing body for conducting frictional heaT thereinto for dissipation.
Claim 15
Dependent Claim
13 words
The invention according to claim 15 wherein the filament means is brass wire.
Claim 16
Dependent Claim
92 words
A clutch facing consisting essentially of: a disc-like body formed of a continuous bundle of numerous longitudinally coextensive generally parallel continuous glass fibers randomly wound upon itself in the plane of the body, said bundle of glass fibers being impregnated with a heat curable cement, said bundle throughout its random arrangement having heat conductive filament means helically disposed thereabout, said helically disposed filament means having portions adapted for exposure to a friction face for absorbing frictional heat and being continuous with portions extending deep into the body for dissipation of heat thereinto.
Claim 17
Dependent Claim
13 words
The invention according to claim 17 wherein the heat conductive filament is brass.
References Cited (Backward Citations)
FR854005A
Cited
US2724671A
Cited
US2749266A
Cited
US3068131A
Cited
US3118527A
Cited
US3526306A
Cited
US3600258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |