US3768940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the production of composite containers
Assignee: National Can Corp
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Filing: 1971-12-23
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Granted: 1973-10-30
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Expires: 1991-12-23
Abstract
Abstract Injection blow molding apparatus including a blow core, a parison mold and a blow mold operating in an injection blow molding cycle. A transfer device for preformed liners is shiftable from a liner receiving position into a position to introduce such liner into the blow mold after the finished article has been removed from the blow mold. The blow mold then acts as a liner carrier to transfer the liner to the blow core as the blow core is introduced into the parison mold for the molding of the parison.
Inventors
- 👤 E Valyi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:41
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/70; B29C37/00; B29C37/0003; B29C2949/00; B29C2949/07; B29C2949/0715; B29C2949/30; B29C2949/3008; B29C2949/3009; B29C2949/3016; B29C2949/302; B29C2949/3024; B29C2949/3026; B29C2949/3032; B29C2949/3064; B29C49/02; B29C49/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
128 words
Apparatus for introducing liners into an injection blow molding system consisting of a parison mold, a blow mold and a blow core, said apparatus comprising means for removing the finished article from the blow mold, a transfer device for introducing a preformed liner into the blow mold including an element adapted to be inserted into said liner and having means to retain said liner thereon for transferring to the blow mold, means transferring the liner from the blow mold to the path of the blow core prior to the molding of the parison in the parison mold and means for shifting said blow mold out of the path of said blow core into a discharge station in which said finished article is removed and said liner is introduced.
Claim 2
Dependent Claim
128 words
Apparatus for introducing liners into an injection blow molding system consisting of a parison mold, a blow mold and a blow core, said apparatus comprising means for removing the finished article from the blow mold, a transfer device for introducing a preformed liner into the blow mold including an element adapted to be inserted into said liner and having means to retain said liner thereon for transferring to the blow mold, means transferring the liner from the blow mold to the path of the blow core prior to the molding of the parison in the parison mold and means for shifting said blow mold out of the path of said blow core into a discharge station in which said finished article is removed and said liner is introduced.
Claim 3
Dependent Claim
44 words
Apparatus as set forth in claim 1 in which the means for removing the finished article from the blow mold comprises an element adapted to be inserted in said article and having means to retain said article thereon when removed from the blow mold.
Claim 4
Dependent Claim
26 words
Apparatus as set forth in claim 2 in which said retaining means includes a suction port and means for applying suction thereto for gripping the article.
Claim 5
Dependent Claim
27 words
Apparatus as set forth in claim 3 in which means is provided for applying air under pressure to said port for discharging said article from said finger.
Claim 6
Dependent Claim
28 words
Apparatus as set forth in claim 2 in which said element is adapted to transfer said finished article and also to introduce said liner into said blow mold.
Claim 7
Dependent Claim
39 words
Apparatus as set forth in claim 1 in which said transfer device includes a pair of elements, means for removing said article on one of said elements and means for introducing the liner on the other of said elements.
Claim 8
Dependent Claim
16 words
Apparatus as set forth in claim 6 in which said pair of elements move in unison.
Claim 9
Dependent Claim
27 words
Apparatus as set forth in claim 6 including means for shifting the positions of said elements for bringing the same successively into registration with said blow mold.
Claim 10
Dependent Claim
39 words
Apparatus as set forth in claim 1 including means for shifting said transfer device from a first position wherein said article is extracted from said blow mold into a second position wherein said liner is applied to said element.
Claim 11
Dependent Claim
73 words
Apparatus as set forth in claim 1 in which said article is blown in the blow mold in a blow station and in which said blow mold is shifted out of the path of said blow core into a discharge station in which said article is removed and said liner is introduced and said blow mold is returned to said blow station for transferring the liner to the path of the blow core.
Claim 12
Dependent Claim
36 words
Apparatus as set forth in claim 1 in which said transfer device is shIftable from a first station wherein a liner is received to a second station wherein the liner is introduced into said blow mold.
Claim 13
Dependent Claim
21 words
Apparatus as set forth in claim 11 in which said transfer device is shifted between said stations in a straight path.
Claim 14
Dependent Claim
20 words
Apparatus as set forth in claim 11 wherein said transfer device is shifted between said stations in an arcuate path.
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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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |