US2855329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making a friction lining
Assignee: Russell Manufacturing Co
•
Filing: 1955-09-16
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Granted: 1958-10-07
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Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 Henry C Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:30
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE METHOD OF PRODUCING A FRICTION LINING WHICH COMPRISES IMPREGNATING A FIBROUS ASBESTONE BASE MATERIAL WITH A WATER SOLUTION OF A HYDROLYZED, ACIDIFIED ORGANO SILICATE AND DRYING SAID IMPREGNATED MATERIAL AT A TEMPERATURE TO DEHYDRATE THE SAME AND PRECIPITATE AMORPHOUS COLLODIAL SILICA IN SITU WHEREBY A UNIFORM DEPOSIT OF SAID AMORPHOUS COLLOIDAL SILICA IS DEPOSITED AS A COATING ON THE FIBERS OF SAID ASBESTOS BASE MATERIAL, AND THEN IMPREGNATING THE RESULTANT PRODUCT WITH A BONDING RESIN.
Claim 2
Independent Claim
76 words
THE METHOD OF PRODUCING A FRICTION LINING WHICH COMPRISES IMPREGNATING A FIBROUS ASBESTONE BASE MATERIAL WITH A WATER SOLUTION OF A HYDROLYZED, ACIDIFIED ORGANO SILICATE AND DRYING SAID IMPREGNATED MATERIAL AT A TEMPERATURE TO DEHYDRATE THE SAME AND PRECIPITATE AMORPHOUS COLLODIAL SILICA IN SITU WHEREBY A UNIFORM DEPOSIT OF SAID AMORPHOUS COLLOIDAL SILICA IS DEPOSITED AS A COATING ON THE FIBERS OF SAID ASBESTOS BASE MATERIAL, AND THEN IMPREGNATING THE RESULTANT PRODUCT WITH A BONDING RESIN.
References Cited (Backward Citations)
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US2033928A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |