US4863654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making foamed articles
Assignee: Davidson Textron Inc
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Filing: 1988-04-04
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Granted: 1989-09-05
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Expires: 2008-04-04
Abstract
Abstract The apparatus includes a first female mold member defining a shaped mold cavity for receiving a plastisol layer or skin. A second mold member is pivotally disposed on the female mold member between an open and closed position. In the open position, the second mold member receives and holds thereon a portion of the plastisol skin extending from the mold cavity. An insert is positioned in the mold cavity by a third mold member such as a mold lid on which the insert is releasably retained. After the insert is positioned in the mold cavity, the second mold member is pivoted toward the mold lid to fold the skin portion thereon over and against an edge of the insert. The skin is folded adjacent the pivot axis of the second mold member. Foam can then be introduced and cured between the skin and insert.
Inventors
- 👤 Ernest L. Belleville
- 👤 Patricia A. Betzig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:06
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/12; B29C33/14; B29C33/18; B29C33/20; B29C33/26; B29C44/00; B29C44/02; B29C44/12; B29C44/1257; B29C51/00; B29C51/26; B29C51/30; B29C51/34; B29C44/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
A method for making a molded foam article comprising: (a) positioning a layer on a surface defining a mold cavity with portions of the layer extending from the mold cavity, (b) holding said portions of the layer support surfaces of movable members that are oriented in an open position with said support surfaces generally contiguous with the surface of said mold cavity, (c) positioning an insert in the mold cavity with the movable members in an open position and with the insert spaced from the layer, the insert being positioned with an upper edge facing away from the layer in the mold cavity, (d) pivoting the movable members to a closed position toward the insert after the insert is positioned in the mold cavity to move and fold said portions of the layer against said upper edge of the insert while said layer remains positioned in the mold cavity to seal said portions against said upper edge, and (e) then introducing foam between the layer and insert to unite the layer and the insert together.
Claim 2
Independent Claim
175 words
A method for making a molded foam article comprising: (a) positioning a layer on a surface defining a mold cavity with portions of the layer extending from the mold cavity, (b) holding said portions of the layer support surfaces of movable members that are oriented in an open position with said support surfaces generally contiguous with the surface of said mold cavity, (c) positioning an insert in the mold cavity with the movable members in an open position and with the insert spaced from the layer, the insert being positioned with an upper edge facing away from the layer in the mold cavity, (d) pivoting the movable members to a closed position toward the insert after the insert is positioned in the mold cavity to move and fold said portions of the layer against said upper edge of the insert while said layer remains positioned in the mold cavity to seal said portions against said upper edge, and (e) then introducing foam between the layer and insert to unite the layer and the insert together.
Claim 3
Dependent Claim
20 words
The method of claim 1 further including holding the layer on the surface defining the mold cavity during step (d).
Claim 4
Dependent Claim
25 words
The method of claim 2 wherein step (d) includes establishing a differential pressure on opposite sides of the layer to hold it on the surface.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein step (b) includes holding said portion of the layer on the movable member by establishing a differential pressure on opposite sides of said portion.
Claim 6
Dependent Claim
38 words
The method of claim 1 wherein the movable member is pivoted toward the insert in step (d) about a pivot axis adjacent a side of the mold cavity and the layer is folded generally about the pivot axis.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |