Patent US3434805A successfully refreshed from Google Patents.
US3434805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuously producing a plastic foam
Assignee: Schaum Chemie W Bauer GmbH and Co KG
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Filing: 1966-08-22
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Granted: 1969-03-25
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Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 Karl Bar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:41
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/74; B29B7/7404; B29B7/7409; B29B7/7419; D; D06; D06B; D06B19/00; D06B19/0088; D06B19/0094; Y; Y10; Y10S; Y10S261/00; Y10S261/26; Y10S366/00; Y10S366/604; Y10S521/00; Y10S521/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
AN APPARATUS FOR CONTINUOUSLY PRODUCING A PLASTIC FOAM FROM A CURABLE LIQUID SYNTHETIC RESIN AND A FOAMING AGENT FOAM CONTAINING A CURING ACCELERATOR FOR THE SYNTHETIC RESIN, COMPRISING: (1) A HOUSING DEFINING AN ELONGATED CHAMBER HAVING A LONGITUDINAL AXIS, (A) THE HOUSING HAVING AN OUTLET AT ONE END THEREOF IN COMMUNICATION WITH THE ELONGATED CHAMBER; (2) A CONDUIT FOR DELIVERING THE CURABLE LIQUID SYNTHETIC RESIN TO THE ELONGATED CHAMBER, THE CONDUIT PASSING THROUGH THE HOUSING INTO THE CHAMBER AND TERMINATING IN THE CHAMBER IN AN INNER END SUBSTANTIALLY OPPOSITE THE OUTLET; (3) A NOZZLE AT THE INNER END OF THE CONDUIT AND POSITIONED ALONG THE AXIS OF THE ELONGATED CHAMBER, (B) THE NOZZLE DEFINING AN ANNULAR OUTLET SLOT RADIALLY EXTENDING FROM SAID AXIS AND INCLINED TOWARD THE OUTLET OF THE CHAMBER, (C) THE HOUSING DEFINING A MIXING COMPARTMENT IN SAID CHAMBER BETWEEN THE NOZZLE AND THE OUTLET; AND (4) AN INLET CONDUIT FOR DELIVERING THE FOAMING AGENT FOAM CONTAINING THE ACCELERATOR, THE INLET CONDUIT PASSING THROUGH THE HOUSING INTO THE PORTION OF THE ELONGATED CHAMBER ABOVE SAID NOZZLE.
Claim 2
Independent Claim
178 words
AN APPARATUS FOR CONTINUOUSLY PRODUCING A PLASTIC FOAM FROM A CURABLE LIQUID SYNTHETIC RESIN AND A FOAMING AGENT FOAM CONTAINING A CURING ACCELERATOR FOR THE SYNTHETIC RESIN, COMPRISING: (1) A HOUSING DEFINING AN ELONGATED CHAMBER HAVING A LONGITUDINAL AXIS, (A) THE HOUSING HAVING AN OUTLET AT ONE END THEREOF IN COMMUNICATION WITH THE ELONGATED CHAMBER; (2) A CONDUIT FOR DELIVERING THE CURABLE LIQUID SYNTHETIC RESIN TO THE ELONGATED CHAMBER, THE CONDUIT PASSING THROUGH THE HOUSING INTO THE CHAMBER AND TERMINATING IN THE CHAMBER IN AN INNER END SUBSTANTIALLY OPPOSITE THE OUTLET; (3) A NOZZLE AT THE INNER END OF THE CONDUIT AND POSITIONED ALONG THE AXIS OF THE ELONGATED CHAMBER, (B) THE NOZZLE DEFINING AN ANNULAR OUTLET SLOT RADIALLY EXTENDING FROM SAID AXIS AND INCLINED TOWARD THE OUTLET OF THE CHAMBER, (C) THE HOUSING DEFINING A MIXING COMPARTMENT IN SAID CHAMBER BETWEEN THE NOZZLE AND THE OUTLET; AND (4) AN INLET CONDUIT FOR DELIVERING THE FOAMING AGENT FOAM CONTAINING THE ACCELERATOR, THE INLET CONDUIT PASSING THROUGH THE HOUSING INTO THE PORTION OF THE ELONGATED CHAMBER ABOVE SAID NOZZLE.
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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) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |