US3718182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the production of cast polymer sheets
Assignee: ROSTERO SA
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Filing: 1970-07-15
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Granted: 1973-02-27
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Expires: 1990-07-15
Abstract
Abstract Hollow metal plates, each formed with an interior flow passageway for circulating a fluid heat transfer medium, are used in apparatus for producing cast polymer sheets which includes a casting chamber. The plates are made of iron or preferably of a light metal, such as aluminum and aluminum alloys, and are constructed of a frame, plates and dividers secured together by epoxy resin to form a sealed flow passageway. Means are arranged to equalize the pressure in the flow passageway and the pressure in the casting chamber of the apparatus.
Inventors
- 👤 C Rossetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:27
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/007; B29C33/00; B29C33/02; B29C33/04; B29C33/20; B29C33/202; B29C39/00; B29C39/22; B29C39/26; B29C39/265; B29C39/38; B29D; B29D7/00; B29D7/01; B29C2791/00; B29C2791/004; B29C2791/006; B29C37/00; B29C37/005; B29C37/006; B29K; B29K2033/00; B29K2033/04; B29K2105/00; B29K2105/0002
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
15 words
Apparatus, as set forth in claim 1, wherein said binding material is an organic material.
Claim 2
Dependent Claim
15 words
Apparatus, as set forth in claim 2, wherein said binding material is an epoxy resin.
Claim 3
Dependent Claim
56 words
Apparatus, as set forth in claim 1, wherein said metallic components comprise a pair of metal plates disposed in spaced facing relationship, a metal frame positioned between and arranged to extend about the edges of said plates for spacing said plates apart and, in combination with said plates, forming the hollow space within said plate member.
Claim 4
Dependent Claim
79 words
Apparatus, as set forth in claim 4, wherein a plurality of metal dividers disposed in spaced parallel relationship within the hollow space and secured to the interior surfaces of said metal plates, each of said dividers secured at one end to said frame and extending therefrom across the hollow space and terminating therein in spaced relationship from the opposiTe side of the frame, said dividers arranged within the hollow space for forming a tortuously shaped interior flow passageway therein.
Claim 5
Dependent Claim
70 words
Apparatus, as set forth in claim 5, wherein said plate members each having an inlet opening connected to one end of the interior flow passageway and an outlet opening connected to the opposite end of the interior flow passageway for circulating a fluid heat transfer medium therethrough, and said outlet opening being larger than said inlet opening to avoid pressure buildup within the interior flow space in said metal plate.
Claim 6
Dependent Claim
17 words
Apparatus, as ser forth in claim 1, wherein said plate member is made of a light metal.
Claim 7
Dependent Claim
26 words
Apparatus, as set forth in claim 7, wherein said plate member is made of a metal selected from the group consisting of aluminum and aluminum alloys.
References Cited (Backward Citations)
US3590909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |