US4900489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming a skin foam article
Assignee: Toyota Motor Corp
•
Filing: 1988-08-29
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Granted: 1990-02-13
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Expires: 2008-08-29
Abstract
Abstract A method is provided for producing an integral skin foam article made up of a skin, foam and core member. According to the method, an expanded layer which is of the same material as the skin is formed on the back of the skin prior to forming the article.
Inventors
- 👤 Takashi Nagase
- 👤 Yoshio Taguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:26
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/04; B29C44/06; B29C37/00; B29C37/0025; B29C37/0028; B29K; B29K2105/00; B29K2105/04; B29K2105/043; Y; Y10; Y10S; Y10S264/00; Y10S264/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
74 words
A method for forming a skin foam article containing a core member, which method comprises: preparing a preformed and fused skin from a resinous material; forming on a surface of said preformed skin an expanded and fused layer of the same resinous material used to prepare said preformed skin; and producing a resinous foam between a core member and said expanded and fused layer to make said preformed skin integral with said core member.
Claim 2
Independent Claim
74 words
A method for forming a skin foam article containing a core member, which method comprises: preparing a preformed and fused skin from a resinous material; forming on a surface of said preformed skin an expanded and fused layer of the same resinous material used to prepare said preformed skin; and producing a resinous foam between a core member and said expanded and fused layer to make said preformed skin integral with said core member.
Claim 3
Dependent Claim
15 words
The method as set forth in claim 1, wherein the core member is a plate.
Claim 4
Dependent Claim
15 words
The method as set forth in claim 2 wherein the plate is an iron plate.
Claim 5
Dependent Claim
17 words
The method as set forth in claim 1, wherein the preformed skin is a polyvinyl chloride skin.
Claim 6
Dependent Claim
14 words
The method as set forth in claim 1, wherein the foam is polyurethane foam.
Claim 7
Dependent Claim
33 words
The method as set forth in claim 5, wherein the expanded and fused layer on a surface of the preformed skin is produced by heating polyvinyl chloride having a blowing agent incorporated therein.
Claim 8
Dependent Claim
33 words
The method as set forth in claim 4, wherein the expanded and fused layer on a surface of the preformed skin is produced by heating polyvinyl chloride having a blowing agent incorporated therein.
Claim 9
Dependent Claim
62 words
The method as set forth in claim 1, wherein said preformed skin is formed from a mixture of powdered resin and a plasticizer, wherein said expanded and fused layer is formed from an expandable powder mixture of the same powdered resin used to form said preformed skin and a blowing agent therefor, and wherein said foam is formed from a foaming material.
Claim 10
Independent Claim
68 words
A method for forming a skin structure of a skin foam article obtained by producing a foam together with a skin structure and a core member to make said skin structure integral with said core member, which method comprises forming an expanded layer on a surface of a preformed skin prior to producing said foam, said expanded layer being formed of the same material as the preformed skin.
Claim 11
Independent Claim
68 words
A method for forming a skin structure of a skin foam article obtained by producing a foam together with a skin structure and a core member to make said skin structure integral with said core member, which method comprises forming an expanded layer on a surface of a preformed skin prior to producing said foam, said expanded layer being formed of the same material as the preformed skin.
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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) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |