USRE28063E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making a blown article
Assignee: —
•
Filing: 1971-09-27
•
Granted: 1974-07-02
•
Expires: 1991-09-27
Abstract
Abstract THIS INVENTION COMPRISES THE PREPARATION OF A BIXIALLY ORIENTED, THERMOPLASTIC, CONTAINER-SHAPED ARTICLE BY INJECTION MOLDING A HOMOGENOUS MELT FOR FORM A HOLLOW BODY OR PARISON, COOLING THE BODY TO A TEMPERATURE RANGE WHEREIN THE THERMOPLASTIC CAN BE BIAXIALLY ORIENTED BY STRETCHING AND INFLATING, SAID RANGE BEING BELOW THE HOMOGENEOUS MELT TEMPERATURE, AND THEN STRETCHING THE COOLED BODY ALONG ITS LONGITUDINAL AXIS AND INFLATING IT RADIALLY WITH RESPECT TO SUCH LONGITUDINAL AXIS TO SO AS TO ONTAIN UNIFORM BIAXIAL ORIENTATION OF THE THERMOPLASTIC BODY. THE PREFERRED THERMOPLASTIC IS POLYVINYL CHLORIDE.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:35
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/02; B29C49/06; B29C49/071; B29C49/08; B29C49/10; B29C49/12; B29C49/42; B29C49/64; B29C49/6409; B29C49/6427; B29C49/6463; B29C2049/023; B29C2949/00; B29C2949/07; B29C2949/072; B29C2949/0725; B29C2949/073; B29C2949/0733; B29C2949/076; B29C2949/0761; B29C2949/0762; B29C2949/0768; B29C2949/077; B29C2949/0772; B29C2949/0773; B29C2949/078; B29C2949/20; B29C2949/22; B29C2949/24; B29C2949/26; B29C2949/28; B29C33/00; B29C33/02; B29C33/04; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; B29K2025/00
Claims Analysis
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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) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |