US2524932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing bonded mica
Assignee: Westinghouse Electric Corp
•
Filing: 1946-09-12
•
Granted: 1950-10-10
•
Expires: 1966-09-12
Abstract
No abstract record available.
Inventors
- 👤 Earl L Schulman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:56
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN THE PROCESS OF PREPARING BONDED MICA, THE STEPS COMPRISING PLACING A SHEET OF MICA FLAKES CARRYING A HEAT CURABLE FLOWABLE BINDER ON A RELATIVELY RIGID, SMOOTH BASE, COVERING THE SHEET OF MICA FLAKES WITH AN ELASTIC MEMBER, FORCING THE ELASTIC MEMBER AGAINST THE SHEET OF MICA FLAKES IN THE DIRECTION OF THE BASE BY MEANS OF FLUID PRESSURE THEREBY TO APPLY A UNIFORM PRESSURE AND TO SECURE A UNIFORM DISTRIBUTION OF THE BINDER RELATIVE TO THE MICA, HEATING THE SHEET OF MICA FLAKES AT A TEMPERATURE SUFFICIENT TO CURE THE BINDER TO A NON-FLOWABLE STATE, REMOVING THE HEAT CURED MICA SHEET FROM THE BASE AND MACHINING TO SMOOTHNESS THE RELATIVELY ROUGH SURFACE THAT HAS RESULTED FROM CONTACT WITH THE ELASTIC MEMBER.
Claim 2
Dependent Claim
122 words
IN THE PROCESS OF PREPARING BONDED MICA, THE STEPS COMPRISING PLACING A SHEET OF MICA FLAKES CARRYING A HEAT CURABLE FLOWABLE BINDER ON A RELATIVELY RIGID, SMOOTH BASE, COVERING THE SHEET OF MICA FLAKES WITH AN ELASTIC MEMBER, FORCING THE ELASTIC MEMBER AGAINST THE SHEET OF MICA FLAKES IN THE DIRECTION OF THE BASE BY MEANS OF FLUID PRESSURE THEREBY TO APPLY A UNIFORM PRESSURE AND TO SECURE A UNIFORM DISTRIBUTION OF THE BINDER RELATIVE TO THE MICA, HEATING THE SHEET OF MICA FLAKES AT A TEMPERATURE SUFFICIENT TO CURE THE BINDER TO A NON-FLOWABLE STATE, REMOVING THE HEAT CURED MICA SHEET FROM THE BASE AND MACHINING TO SMOOTHNESS THE RELATIVELY ROUGH SURFACE THAT HAS RESULTED FROM CONTACT WITH THE ELASTIC MEMBER.
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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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |