US3927162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of molding a polyurethane foam involving use of a fan-like spray nozzle
Assignee: Goodyear Tire and Rubber Co
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Filing: 1973-12-20
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Granted: 1975-12-16
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Expires: 1993-12-20
Abstract
Abstract Method of producing polyurethane foam by distributing a liquid polyurethane reaction mixture containing an organic polyisocyanate reactive hydrogen containing polymeric material and a blowing agent under pressure of 0.5 to 200 pounds per square inch above atmospheric pressure and distributing the polyurethane reaction mixture in a fan-like planular pattern across at least part of the mold cavity while moving the mold and pouring head relative to each other.
Inventors
- 👤 Sr Robert J Stalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:14
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/367; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/44; B29B7/74; B29B7/7438; B29B7/7442; B29B7/7447; B29B7/7471; B29K; B29K2075/00; Y; Y10; Y10S; Y10S521/00; Y10S521/917
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
FORMING A LIQID FOAMABLE POLYURETHANE REACTION MIXTURE COMPRISING AN ORGANIC POLYISOCYANATE, A REACTIVE HYDROGEN CONTAINING POLYMERIC MATERIAL HAVING A MOLECULAR WEIGHT OF ABOUT 550 TO 6500 AND BLOWING AGENT UNDER A PRESSURE OF AT LEAST 0.5 TO 200 POUNDS PER SQUARE INCH ABOVE ATMOSPHERIC PRESSURE; AND
Claim 2
Dependent Claim
46 words
FORMING A LIQID FOAMABLE POLYURETHANE REACTION MIXTURE COMPRISING AN ORGANIC POLYISOCYANATE, A REACTIVE HYDROGEN CONTAINING POLYMERIC MATERIAL HAVING A MOLECULAR WEIGHT OF ABOUT 550 TO 6500 AND BLOWING AGENT UNDER A PRESSURE OF AT LEAST 0.5 TO 200 POUNDS PER SQUARE INCH ABOVE ATMOSPHERIC PRESSURE; AND
Claim 3
Dependent Claim
17 words
SPRAYING THE FOAMABLE POLYURETHANE REACTION MIXTURE IN A FAN-LIKE PLANULAR PATTERN OF DESIRED WIDTH ACROSS A MOLD
Claim 4
Dependent Claim
17 words
SPRAYING THE FOAMABLE POLYURETHANE REACTION MIXTURE IN A FAN-LIKE PLANULAR PATTERN OF DESIRED WIDTH ACROSS A MOLD
Claim 5
Dependent Claim
37 words
spraying the foamable polyurethane reaction mixture in a fan-like planular pattern of desired width across a mold cavity while moving the mold and pouring head relative to each other to cover the surface of the mold cavity.
Claim 6
Dependent Claim
37 words
spraying the foamable polyurethane reaction mixture in a fan-like planular pattern of desired width across a mold cavity while moving the mold and pouring head relative to each other to cover the surface of the mold cavity.
Claim 7
Dependent Claim
21 words
The method of claim 1 wherein the pressure in step (1) is 5 to 80 pounds per square inch above atmospheric.
Claim 8
Dependent Claim
25 words
The method of claim 1 wherein the organic polyisocyanate is toluene diisocyanate and the reactive hydrogen containing polymeric material is essentially a polypropylene ether polyol.
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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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |