US3801244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making a foamed article having a plastic skin bonded thereto
Assignee: Individual
•
Filing: 1972-02-08
•
Granted: 1974-04-02
•
Expires: 1992-02-08
Abstract
Abstract Apparatus and method for molding a non-planar article having a thermoplastic skin bonded to a foamed plastic body, said article being completely formed from conventional materials in a twopiece mold while the mold is closed.
Inventors
- 👤 H Eisenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:53
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/14; B29C44/146; B29C51/00; B29C51/18; B29C51/26; B29C51/30; B29C51/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
166 words
Apparatus for molding an article having a thermoplastic skin bonded thereto, said apparatus comprising, a- first and second normally-open molds having complementary mold face plates forming a mold cavity when the molds are in the closed position, b- means for applying an adhesive coating of predetermined pattern to a surface of a relatively thin, vacuum-formable material, c- means for heating said material with said coating, d- means automatically positioning the said material with said coating centrally disposed between the molds and away from the mold face plate of the first mold, e- means for closing and opening the molds, f- means for vacuum-forming the said material to the contour of the mold face plate of said first mold, g- means for filling the mold cavity with a foamable plastic material, h- means for fusing the foamable material into an integral body bonded to the contoured portion of said material, i- means for cooling the molds and, j- means for stripping the finished article from the molds.
Claim 2
Dependent Claim
166 words
Apparatus for molding an article having a thermoplastic skin bonded thereto, said apparatus comprising, a- first and second normally-open molds having complementary mold face plates forming a mold cavity when the molds are in the closed position, b- means for applying an adhesive coating of predetermined pattern to a surface of a relatively thin, vacuum-formable material, c- means for heating said material with said coating, d- means automatically positioning the said material with said coating centrally disposed between the molds and away from the mold face plate of the first mold, e- means for closing and opening the molds, f- means for vacuum-forming the said material to the contour of the mold face plate of said first mold, g- means for filling the mold cavity with a foamable plastic material, h- means for fusing the foamable material into an integral body bonded to the contoured portion of said material, i- means for cooling the molds and, j- means for stripping the finished article from the molds.
Claim 3
Dependent Claim
168 words
Automatic molding apparatus comprising, a- first and second normally open molds having complementary mold face plates forming a mold cavity when the molds are in the closed position, b- means for extending a web of vacuum-formable material between the molds, c- means for applying spaced adhesive coatings to one surface of the web, said coatings having a predetermined pattern, d- means for pre-heating the web with said coatings, e- means for positioning the web with one of the coatings centrally disposed between the molds and away from the mold face plate of the first mold, f- means for moving both of the molds toward each other and away from each other, g- means for vacuum-forming the said web portion to the contour of the mold face plate of the first mold, h- means for filling the mold cavity with foamable plastic material, i- means for fusing the foamable material into an integral body bonded to the formed portion of the web, j- means for cooling the molds, and
Claim 4
Dependent Claim
168 words
Automatic molding apparatus comprising, a- first and second normally open molds having complementary mold face plates forming a mold cavity when the molds are in the closed position, b- means for extending a web of vacuum-formable material between the molds, c- means for applying spaced adhesive coatings to one surface of the web, said coatings having a predetermined pattern, d- means for pre-heating the web with said coatings, e- means for positioning the web with one of the coatings centrally disposed between the molds and away from the mold face plate of the first mold, f- means for moving both of the molds toward each other and away from each other, g- means for vacuum-forming the said web portion to the contour of the mold face plate of the first mold, h- means for filling the mold cavity with foamable plastic material, i- means for fusing the foamable material into an integral body bonded to the formed portion of the web, j- means for cooling the molds, and
Claim 5
Dependent Claim
31 words
The invention as recited in claim 2, including means for applying air under pressure to the opposed surfaces of the completed article as the molds are moved away from each other.
Claim 6
Dependent Claim
38 words
The invention as recited in claim 2, wherein said means for fusing includes means for maintaining the mold face plate of the first mold at a predetermining temperature, which temperature is below the softening point of the web.
Claim 7
Dependent Claim
86 words
The invention as recited in claim 2, wherein the molds include facing lands; and including a cutting knife secured to one of the mold lands, which cutting knife has a configuration similar to but larger than the adhesive coating on the web, said cutting knife having a discontinous cutting edge extending from the mold land a distance greater than the thickness of vacuum-formed web portion; and means causing the cutting knife to cut through the said web portion as the molds are moved toward each other.
Claim 8
Dependent Claim
34 words
The invention as recited in claim 2, wherein the said web is supported by a pair of spaced, endless chains having pins projecting through the web at points proximate to the side edges thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |