US2989422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for coating a fibrous base
Assignee: PPG Industries Inc
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Filing: 1957-08-30
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Granted: 1961-06-20
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Expires: 1977-08-30
Abstract
No abstract record available.
Inventors
- 👤 Clarence H Helbing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:21
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/12; B29K; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A METHOD OF APPLYING A COATING OF A FLOWABLE, VISCOUS COMPOSITION TO A COMPRESSIBLE BASE OF NON-UNIFORM THICKNESS BY MEANS OF A DOCTOR BLADE WHICH COMPRISES SUPPLYING A QUANTITY OF THE COMPOSITION TO A SURFACE OF THE BASE, MOVING THE BASE AND COMPOSITION THEREON INTO CONTACT WITH THE DOCTOR BLADE SO AS TO SPREAD THE COATING ON THE SURFACE OF THE BASE AND SUPPORTING THE BASE ON THE SIDE OPPOSITE THE DOCTOR BLADE BY MEANS OF A FLEXIBLE, RESILIENT, PNEUMATIC SUPPORT MAINTAINED AT CONSTANT PRESSURE AGAINST THE BASE SO AS TO MAINTAIN THE DISTANCE BETWEEN THE BASE AND THE DOCTOR BLADE SUBSTANTIALLY CONSTANT, INDIVIDUAL PORTIONS OF SAID SUPPORT ALONG THE LENGTH OF THE SUPPORT OPPOSITE THE DOCTOR BLADE BEING SEPARATELY MOVABLE TOWARD AND AWAY FROM THE DOCTOR BLADE IN RESPONSE TO DIFFERENCES IN THICKNESS OF THE BASE ACROSS ITS WIDTH AND ALONG ITS LENGTH AS PORTIONS OF THE BASE OF VARYING THICKNESS PASS ACROSS THE DOCTOR BLADE.
Claim 2
Independent Claim
157 words
A METHOD OF APPLYING A COATING OF A FLOWABLE, VISCOUS COMPOSITION TO A COMPRESSIBLE BASE OF NON-UNIFORM THICKNESS BY MEANS OF A DOCTOR BLADE WHICH COMPRISES SUPPLYING A QUANTITY OF THE COMPOSITION TO A SURFACE OF THE BASE, MOVING THE BASE AND COMPOSITION THEREON INTO CONTACT WITH THE DOCTOR BLADE SO AS TO SPREAD THE COATING ON THE SURFACE OF THE BASE AND SUPPORTING THE BASE ON THE SIDE OPPOSITE THE DOCTOR BLADE BY MEANS OF A FLEXIBLE, RESILIENT, PNEUMATIC SUPPORT MAINTAINED AT CONSTANT PRESSURE AGAINST THE BASE SO AS TO MAINTAIN THE DISTANCE BETWEEN THE BASE AND THE DOCTOR BLADE SUBSTANTIALLY CONSTANT, INDIVIDUAL PORTIONS OF SAID SUPPORT ALONG THE LENGTH OF THE SUPPORT OPPOSITE THE DOCTOR BLADE BEING SEPARATELY MOVABLE TOWARD AND AWAY FROM THE DOCTOR BLADE IN RESPONSE TO DIFFERENCES IN THICKNESS OF THE BASE ACROSS ITS WIDTH AND ALONG ITS LENGTH AS PORTIONS OF THE BASE OF VARYING THICKNESS PASS ACROSS THE DOCTOR BLADE.
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US2195101A
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US2423555A
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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) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |