US2567949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making sponge rubber
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1948-02-21
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Granted: 1951-09-18
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Expires: 1968-02-21
Abstract
No abstract record available.
Inventors
- 👤 Elisha B Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:34
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/20; B29C44/28; B29C35/00; B29C35/02; B29K; B29K2021/00; B29K2105/00; B29K2105/0058; B29K2105/0064
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
IN AN APPARATUS FOR MAKING SPONGE RUBBER, A CONTAINER FOR RECEIVING LATEX; A PRIMARY CONDUIT MEANS FOR CONVEYING LATEX INTO SAID CONTAINER; A TANK FOR INERT GAS AND SECONDARY CONDUIT MEANS LEADING FROM SAID TANK INTO SAID FIRST CONDUIT MEANS; A STIRRING DEVICE ARRANGED IN SAID CONTAINER AND OPERABLE TO CONVERT SAID LATEX INTO RUBBER FOAM; RECEIVING MEANS FOR THE RUBBER FOAM FORMED IN SAID CONTAINER; MEANS FOR DISPENSING SAID FOAM FROM SAID CONTAINER AND DEPOSITING IT ON SAID RECEIVING MEANS; AND MEANS FOR CURING SAID FOAM, SAID MEANS CONSISTING OF A PLURALITY OF INFRA-RED LAMPS FOR INITIAL CURING AND AN OVEN FOR FINAL CURING OF SAID FOAM.
References Cited (Backward Citations)
US666703A
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US1467867A
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US2283316A
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US2342920A
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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) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |