Patent US2648619A successfully refreshed from Google Patents.
US2648619A
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Fabric coated sponge rubber and method of making same
Assignee: EDWARD D ANDREWS
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Filing: 1952-05-01
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Granted: 1953-08-11
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Expires: 1972-05-01
Abstract
No abstract record available.
Inventors
- 👤 Sterling W Alderfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:51
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/20; B29C44/28; B29C44/02; B29C44/12; B29C44/1209; B29C44/32; B29C44/321; B29K; B29K2021/00; Y; Y10; Y10S; Y10S36/00; Y10S36/02; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/15; Y10T442/30; Y10T442/3325; Y10T442/3366
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
IN THE METHOD OF MAKING SPONGE RUBBER PRODUCT HAVING A NON-ELASTIC COMPOSITE FABRIC BACKING, THE STEPS OF DEPOSITING A MASS OF LIQUID RUBBER LATEX ON A MOVING BELT IN FRONT OF A DOCTOR BAR SPACED ABOVE THE BELT, PASSING A STRIP OF NON ELASTIC OPEN MESH WOVEN FABRIC UNDER THE DOCTOR BAR IN CONTACT WITH THE LATEX CAUSING PENETRATION OF THE LATEX THROUGH THE WOVEN FABRIC AND THEN PASSING A STRIP OF KNITTED TEXTILE FABRIC UNDER A SECOND DOCTOR BAR IN CONTACT WITH THE UPPER SURFACE OF THE WOVEN FABRIC AND THE LIQUID LATEX PENETRATING THERETHROUGH.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |