US4786447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of molding skin-covered foamed plastic article
Assignee: Ikeda Corp
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Filing: 1987-06-11
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Granted: 1988-11-22
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Expires: 2007-06-11
Abstract
Abstract A method of molding a skin-covered foamed plastic article, which includes putting a skin member on a shaping device in a manner to cover the same thereby to prepare a first temporary unit, attaching shaping dies to the first temporary unit in a manner to cover the same thereby to prepare a second temporary unit, removing the shaping device from the second temporary unit thereby to prepare a third temporary unit, placing the third temporary unit in a mold in such a manner that a mouth portion of the third temporary unit is directed upward, pouring a liquid material of foamed plastics into the third temporary unit through the mouth portion, placing a lid member on the mold in a manner to close the mouth portion, and removing, upon sufficient curing of the material, the lid member from the mold and taking out the third temporary unit from the mold together with the cured material.
Inventors
- 👤 Hiroshi Kouda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:36
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/44; B29C33/48; B29C44/00; B29C44/02; B29C44/12; B29C44/14; B29C44/143
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
225 words
A method of molding a skin-covered foamed plastic article, comprising the steps of: (a) putting a skin member on a shaping device in a manner to cover the same thereby to prepare a first temporary unit, said skin member being shaped like a bag so that upon proper putting of said skin member on said shaping device, no creases are produced on the skin member; (b) attaching shaping dies to said first temporary unit in a manner to cover the skin member thereby to prepare a second temporary unit; (c) removing said shaping device after said shaping dies are attached from said second temporary unit thereby to prepare a third temporary unit with the skin member supported within said shaping dies; (d) placing said third temporary unit in a mold in such a manner that a mouth portion of said third temporary unit is directed upward; (e) pouring a liquid material of foamed plastics into said third temporary unit against the skin member through said mouth portion; (f) placing a lid member on said mold in a manner to close said mouth portion; and (g) removing, upon sufficient curing of said material, said lid member from said mold and taking out said third temporary unit from said mold together with the cured material, the skin member and cured material forming said skin-covered foamed plastic article.
Claim 2
Independent Claim
225 words
A method of molding a skin-covered foamed plastic article, comprising the steps of: (a) putting a skin member on a shaping device in a manner to cover the same thereby to prepare a first temporary unit, said skin member being shaped like a bag so that upon proper putting of said skin member on said shaping device, no creases are produced on the skin member; (b) attaching shaping dies to said first temporary unit in a manner to cover the skin member thereby to prepare a second temporary unit; (c) removing said shaping device after said shaping dies are attached from said second temporary unit thereby to prepare a third temporary unit with the skin member supported within said shaping dies; (d) placing said third temporary unit in a mold in such a manner that a mouth portion of said third temporary unit is directed upward; (e) pouring a liquid material of foamed plastics into said third temporary unit against the skin member through said mouth portion; (f) placing a lid member on said mold in a manner to close said mouth portion; and (g) removing, upon sufficient curing of said material, said lid member from said mold and taking out said third temporary unit from said mold together with the cured material, the skin member and cured material forming said skin-covered foamed plastic article.
Claim 3
Dependent Claim
34 words
A method as claimed in claim 1, further comprising upon completion of the step (a), putting stitched portions provided on said skin member in grooves formed in the outer surface of said shaping device.
Claim 4
Dependent Claim
34 words
A method as claimed in claim 2, further comprising upon completion of the step (b), pressing elongate ridges formed on inner surfaces of said shaping dies against said stitched portions of said skin member.
Claim 5
Dependent Claim
24 words
A method as claimed in claim 2, further comprising upon completion of the step (b), assembling said shaping dies by means of clamping means.
Claim 6
Dependent Claim
14 words
A method as claimed in claim 4, wherein said shaping dies comprise three parts.
Claim 7
Dependent Claim
23 words
A method as claimed in claim 1, further comprising, after the step (g), disassembling said shaping dies to readily release the article therefrom.
Claim 8
Dependent Claim
27 words
A method as claimed in claim 1, wherein upon proper assembly, said shaping dies constitute a recess the shape of which corresponds to that of the article.
Claim 9
Dependent Claim
20 words
A method as claimed in claim 1, further comprising before the step (d), heating said mold to a predetermined temperature.
Claim 10
Dependent Claim
17 words
A method as claimed in claim 8, wherein said liquid material is a material of foamed polyurethane.
Claim 11
Dependent Claim
20 words
A method as claimed in claim 1, further comprising, after the step (f), clamping the lid member to the mold.
Claim 12
Dependent Claim
12 words
A method according to claim 1, consisting essentially of the recited steps.
References Cited (Backward Citations)
US3950462A
Cited
US3971112A
Cited
JPS5649232A
Cited
US4383955A
Cited
US4525408A
Cited
US4551290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-22 | 1992-05-23 | 1992-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-22 | 1996-05-23 | 1996-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-22 | 2000-05-23 | 2000-11-22 | $7700.00 | Window Closed / Lapsed |