US4992224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making composite foamed articles using fluid pressure to position a skin layer
Assignee: Davidson Textron Inc
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Filing: 1989-12-18
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Granted: 1991-02-12
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Expires: 2009-12-18
Abstract
Abstract The apparatus includes a first female mold member defining a mold cavity for receiving a plastic skin or layer. A second mold member or slide is positioned with a surface thereon contiguous with the surface of the mold cavity. The surface of the second mold member receives and holds thereon a portion of the plastisol skin extending from the mold cavity. A third mold member, such as a mold core, positions a rigid insert in the mold cavity with an insert surface or edge adjacent the portion of the plastisol skin on the second mold member. The second mold member includes passages for directing fluid pressure against the portion of skin thereon to fold it over the adjacent insert edge. A fourth mold member, such as a mold lid, is movable toward the second and third mold members for pressing the folded-over skin against the insert during foam formation between the skin and insert.
Inventors
- 👤 Harold W. Swenson
- 👤 Patricia A. Betzig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:05
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/56; B29C44/00; B29C44/02; B29C44/12; B29C44/1257; B29C51/00; B29C51/26; B29C51/30; B29C51/36; B29C63/00; B29C63/02; B29C63/04; B29C66/00; B29C66/70; B29C66/71; B29C66/72; B29C66/727; B29C66/80; B29C66/82; B29C66/822; B29C66/8221; B29C66/8227; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8324; B29C33/00; B29C33/12; B29C33/14; B29C33/18; B29C33/20; B29C53/00; B29C53/02; B29C53/04; B29L; B29L2031/00; B29L2031/30; B29L2031/3005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
163 words
A method for making a molded foam article comprising: (a) positioning a layer in a mold cavity of a first mold member with a portion of the layer extending from the mold cavity on a second mold member, (b) positioning an insert in the mold cavity to form a molding space between the insert and the layer in the mold cavity with a surface on the insert adjacent said portion of the layer, (c) applying fluid pressure against said portion of the layer on the second mold member to blow said portion off said second mold member for free movement in a direction away therefrom toward the adjacent insert surface to fold said portion over the adjacent insert surface, (d) moving a mold lid in a direction to press the folded-over portion of the layer against the insert, and (e) forming foam in the molding space between the layer and insert while said portion is folded over and pressed against the insert surface.
Claim 2
Independent Claim
163 words
A method for making a molded foam article comprising: (a) positioning a layer in a mold cavity of a first mold member with a portion of the layer extending from the mold cavity on a second mold member, (b) positioning an insert in the mold cavity to form a molding space between the insert and the layer in the mold cavity with a surface on the insert adjacent said portion of the layer, (c) applying fluid pressure against said portion of the layer on the second mold member to blow said portion off said second mold member for free movement in a direction away therefrom toward the adjacent insert surface to fold said portion over the adjacent insert surface, (d) moving a mold lid in a direction to press the folded-over portion of the layer against the insert, and (e) forming foam in the molding space between the layer and insert while said portion is folded over and pressed against the insert surface.
Claim 3
Dependent Claim
30 words
The method of claim 1 wherein said mold lid presses the folded-over portion of the layer against an edge of the insert, said edge facing away from said molding space.
Claim 4
Dependent Claim
27 words
The method of claim 2 wherein said mold lid presses said folded-over portion against an insert surface adjacent said edge and facing away from the molding space.
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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) | 1994-02-11 | 1994-08-13 | 1995-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-11 | 1998-08-13 | 1999-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-11 | 2002-08-13 | 2003-02-12 | $7700.00 | Window Closed / Lapsed |