US2966737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction elements
Assignee: American Brake Shoe Co
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Filing: 1958-01-30
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Granted: 1961-01-03
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Expires: 1978-01-30
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Spokes
- 👤 Frank W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:37
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/027; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12139; Y10T428/12229; Y10T428/12236; Y10T428/12243; Y10T428/12389; Y10T428/12396
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A FRICTION COUPLE MEMBER COMPRISING A RIGID METALLIC SUPPORTING MEMBER AND A FRICTION ELEMENT FOR HIGH ENERGY APPLICATIONS SECURED THERETO, SAID FRICTION ELEMENT CONSISTING ESSENTIALLY OF A THERMALLY STABLE HEATCONDUCTIVE METALLIC MATRIX HAVING DISPERSED THEREIN BODIES OF ALUMINUM SILICATE MINERAL CONSISTING ESSENTIALLY ONLY OF HIGHLY ANGULAR NATURALLY OCCURRING SUBSTANTIALLY PURE SILLIMANITE, EACH SUCH BODY BEING AN AGGLOMERATION OF PARALLEL TO SUB-PARALLEL INTERLACED SUBSTANTIALLY PURE SILLIMANITE CRYSTALS HAVING THE FORMULA AL2SIO5, A HARDNESS OF 6-7, A SPECIFIC GRAVITY OF ABOUT 3.10 TO 3.23, CRYSTALLIZING IN THE ORTHORHOMBIC SYSTEM, AND HEAT STABLE UP TO TEMPERATURES AT LEAST AS HIGH AS ABOUT 1550*C.
Claim 2
Dependent Claim
100 words
A FRICTION COUPLE MEMBER COMPRISING A RIGID METALLIC SUPPORTING MEMBER AND A FRICTION ELEMENT FOR HIGH ENERGY APPLICATIONS SECURED THERETO, SAID FRICTION ELEMENT CONSISTING ESSENTIALLY OF A THERMALLY STABLE HEATCONDUCTIVE METALLIC MATRIX HAVING DISPERSED THEREIN BODIES OF ALUMINUM SILICATE MINERAL CONSISTING ESSENTIALLY ONLY OF HIGHLY ANGULAR NATURALLY OCCURRING SUBSTANTIALLY PURE SILLIMANITE, EACH SUCH BODY BEING AN AGGLOMERATION OF PARALLEL TO SUB-PARALLEL INTERLACED SUBSTANTIALLY PURE SILLIMANITE CRYSTALS HAVING THE FORMULA AL2SIO5, A HARDNESS OF 6-7, A SPECIFIC GRAVITY OF ABOUT 3.10 TO 3.23, CRYSTALLIZING IN THE ORTHORHOMBIC SYSTEM, AND HEAT STABLE UP TO TEMPERATURES AT LEAST AS HIGH AS ABOUT 1550*C.
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) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |