US3988191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing a vessel from thermoplastic resin plate
Assignee: Sekisui Kaseihin Kogyo KK
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Filing: 1973-10-30
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Granted: 1976-10-26
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Expires: 1993-10-30
Abstract
Abstract A method and apparatus for forming a thermoplastic resin vessel including a bottom plate and at least two side plates is provided. The bottom plate or portion is applied to the surface of an inner mold by advancing a bottom mold carrying the bottom plate. The side plates or portions are formed along a concave surface of side molds and is then positioned around the inner mold to completely surround the inner mold to form a tube which holds the bottom plate therein. The outer mold is then removed and the vessel formed by the tube and bottom plate is then removed from the inner mold.
Inventors
- 👤 Takashi Matsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:20
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/78; B29C65/7841; B29C65/7847; B29C53/00; B29C53/36; B29C53/38; B29C53/40; B29C53/42; B29C65/02; B29C65/18; B29C66/00; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; B29C66/53461; B29C66/70; B29C66/72; B29C66/727; B29C66/73; B29C66/739; B29C66/7392; B29C66/80; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/71; B29C66/73921; B29C66/7394; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1031; Y10T156/1033; Y10T156/1036; Y10T156/1038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A process for preparing a thermoplastic resin vessel having a bottom portion and at least two side portions of hard thermoplastic resin, positioning a bottom mold and the major and remaining portions of a side mold away from an inner mold, placing the bottom portion on the bottom mold, bending each of said side portions along a concave surface of one of the major mold portions to form a curved portion, maintaining both edges of each of said curved portions in a softened state, applying the bottom portion to a forward surface of the inner mold by advancing the bottom mold carrying the bottom portion, moving the major mold portions carrying said curved portions to surround the inner mold, then inserting remaining mold portions of the side mold between said major mold portions around the inner mold, thus simultaneously adhering each of said softened edges to completely surround the inner mold to form a tube which holds the bottom portion therein, and removing the bottom mold and major portions and remaining portions of the side mold and the inner mold to obtain the vessel.
Claim 2
Dependent Claim
184 words
A process for preparing a thermoplastic resin vessel having a bottom portion and at least two side portions of hard thermoplastic resin, positioning a bottom mold and the major and remaining portions of a side mold away from an inner mold, placing the bottom portion on the bottom mold, bending each of said side portions along a concave surface of one of the major mold portions to form a curved portion, maintaining both edges of each of said curved portions in a softened state, applying the bottom portion to a forward surface of the inner mold by advancing the bottom mold carrying the bottom portion, moving the major mold portions carrying said curved portions to surround the inner mold, then inserting remaining mold portions of the side mold between said major mold portions around the inner mold, thus simultaneously adhering each of said softened edges to completely surround the inner mold to form a tube which holds the bottom portion therein, and removing the bottom mold and major portions and remaining portions of the side mold and the inner mold to obtain the vessel.
References Cited (Backward Citations)
US1406160A
Cited
US1442357A
Cited
US3484518A
Cited
US3470291A
Cited
US3673033A
Cited
US3792137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |