US3636151A
Copy Number
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a hollow doublewall plastic article
Assignee: Kyoraku Co Ltd
•
Filing: 1970-04-27
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Granted: 1972-01-18
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Expires: 1990-04-27
Overview & Biblio
Claims (0)
Citations (0)
Maintenance Schedule (3)
Categories & Tags (0)
Abstract
Abstract A method for forming a hollow double-wall plastic article comprises positioning at least two tubular plasticized parisons of plastic material at opposite sides of at lease one core of a mold, closing half-molds of the mold about the parisons and the core to enclose said parisons, blowing the parisons into contact with the cavity faces by introducing fluid pressure medium into the parisons and removing the finished article from the mold after curing the article. Further, an apparatus for the said method comprises a pair of extrusion nozzles positioned parallel to each other, a mold including a pair of half-molds and means for introducing fluid pressure medium into the enclosed parisons.
Inventors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:17
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/022; B29C65/028; B29C49/00; B29C49/0031; B29C49/02; B29C49/04; B29C49/04102; B29C49/42; B29C49/56; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/13; B29C66/131; B29C66/1312; B29C66/14; B29C66/50; B29C66/51; B29C66/54; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/82; B29C66/822; B29C66/8222; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/83221; B65; B65D; B65D1/00; B65D1/22; B65D1/26; B65D1/265; B65D11/00; B65D11/16; B65D19/00; B65D19/0004; B65D19/0006; B65D19/0008; B65D19/001; B65D19/0012; B65D81/00; B65D81/38; B65D81/3813; B65D81/3818; B65D81/3823; B65D81/3865; B65D81/3869; B29C2791/00; B29C2791/001; B29C66/71; B29K; B29K2105/00; B29K2105/04; B29L; B29L2024/00; B29L2031/00; B29L2031/52; B29L2031/5227; B29L2031/712; B29L2031/7178; B65D2519/00; B65D2519/00004; B65D2519/00009; B65D2519/00014; B65D2519/00034; B65D2519/00049; B65D2519/00069; B65D2519/00258; B65D2519/00263; B65D2519/00273; B65D2519/00278; B65D2519/00283; B65D2519/00288; B65D2519/00313; B65D2519/00318; B65D2519/00328; B65D2519/00343; B65D2519/00547; B65D2519/00552; B65D2519/00557; B65D2519/00562
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
Annuity Stage
Window Opens
Payment Deadline
Surcharge Period Until
Estimated Fee
Status
3.5 Years (Year 4) 1975-01-17
1975-07-19 1976-01-18
$2000.00
Window Closed / Lapsed
7.5 Years (Year 8) 1979-01-17
1979-07-19 1980-01-18
$3760.00
Window Closed / Lapsed
11.5 Years (Year 12) 1983-01-17
1983-07-19 1984-01-18
$7700.00
Window Closed / Lapsed