US3970419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlled processing of blown plastic articles
Assignee: Individual
•
Filing: 1974-06-14
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Granted: 1976-07-20
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Expires: 1994-06-14
Abstract
Abstract A method and apparatus for forming hollow objects of moldable organic plastic material by providing a parison on a blow core, locating said blow core bearing said parison in a blow mold, expanding said parison within said blow mold, separating said expanded parison from said core while the parison remains in said blow mold and transferring said expanded parison from said blow core within said blow mold to another core and/or blow mold. In a preferred embodiment, a plurality of cores and molds are employed to provide an extended cooling sequence for the final article.
Inventors
- 👤 Emery I. Valyi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:04
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/64; B29C49/6409; B29C49/18; B29C49/6472; B29C49/24; B29C2049/2404; B29C2949/00; B29C2949/07; B29C2949/0715; B29C35/00; B29C35/16; B29C49/02; B29C49/06; B29C49/0665; B29C49/6463; B29C49/6464; B29C49/6465; B29C49/6466; B29K; B29K2067/00; B29K2995/00; B29K2995/0037; B29K2995/005; B29K2995/0053; Y; Y10; Y10S; Y10S425/00; Y10S425/228
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
164 words
An apparatus for forming objects of moldable organic plastic material which comprises: at least one core; means cooperating with said at least one core and aligned therewith for providing a parison thereon; a first mold spaced from said at least one core and engageable with said parison having a cavity therein; means associated with said at least one core and said first mold for bringing together and for separating said core and said first mold; means operatively connected to and carried by said at least one core for expanding said parison away from said core to form a hollow object within said first mold; at least one second mold in spaced relationship to said first mold for adjusting the temperature of said hollow object; and means associated with at least one core for transferring said hollow object from said first mold to said second mold and retaining same in said second mold free from said core for adjusting the temperature of said hollow object.
Claim 2
Independent Claim
164 words
An apparatus for forming objects of moldable organic plastic material which comprises: at least one core; means cooperating with said at least one core and aligned therewith for providing a parison thereon; a first mold spaced from said at least one core and engageable with said parison having a cavity therein; means associated with said at least one core and said first mold for bringing together and for separating said core and said first mold; means operatively connected to and carried by said at least one core for expanding said parison away from said core to form a hollow object within said first mold; at least one second mold in spaced relationship to said first mold for adjusting the temperature of said hollow object; and means associated with at least one core for transferring said hollow object from said first mold to said second mold and retaining same in said second mold free from said core for adjusting the temperature of said hollow object.
Claim 3
Dependent Claim
12 words
The apparatus of claim 1 wherein said transferring means comprises said core.
Claim 4
Dependent Claim
24 words
The apparatus of claim 1 wherein said transferring means comprises at least one transfer core in spaced relationship to said at least one core.
Claim 5
Dependent Claim
19 words
The apparatus of claim 3 which comprises a plurality of second molds and a corresponding number of transfer cores.
Claim 6
Dependent Claim
30 words
The apparatus of claim 4 wherein said second molds are interconnected and mounted on an indexing device and are adapted to move into and out of cooperation with said cores.
Claim 7
Dependent Claim
13 words
The apparatus of claim 5 wherein said indexing device comprises a rotary carousel.
Claim 8
Dependent Claim
16 words
The apparatus of claim 4 wherein said second molds are serially connected to said first mold.
Claim 9
Dependent Claim
18 words
The apparatus of claim 5 wherein each of said first and second molds possesses a temperature control means.
Claim 10
Dependent Claim
32 words
The apparatus of claim 1 including a parison die defining the outer parison surface, with said at least one core defining the inner parison surface and means for introducing moldable plastic therein.
Claim 11
Dependent Claim
14 words
The apparatus of claim 9 wherein said introducing means comprises a pressure molding apparatus.
Claim 12
Dependent Claim
23 words
The apparatus of claim 1 wherein said parison providing means comprises heating means adapted to heat a parison placed thereinto to deformation temperature.
Claim 13
Dependent Claim
14 words
The apparatus of claim 11 wherein said heating die contains a controllable heating means.
Claim 14
Dependent Claim
21 words
The apparatus of claim 11 wherein said heating die is engageable with said core and in lateral relation to said dispenser.
Claim 15
Dependent Claim
30 words
The apparatus of claim 1 wherein said parison providing means comprises a dispenser containing a quantity of previously formed parisons which is engageable with at least one of said cores.
Claim 16
Dependent Claim
44 words
The apparatus of claim 14 wherein said dispenser is engageable with at least two of said cores, and said parison providing means further comprises a parison die engageable with said cores and in lateral relation to said dispenser and said cores are reciprocable therebetween.
Claim 17
Dependent Claim
18 words
The apparatus of claim 1 wherein said at least one core includes means for the temperature control thereof.
Claim 18
Dependent Claim
47 words
The apparatus of claim 1 wherein said parison providing means comprises a dispenser containing a quantity of pre-formed parisons or parison liners, a parison die or heating die in juxtaposition to said core, and means for conveying said parison or liner from said dispenser to said core.
Claim 19
Dependent Claim
28 words
The apparatus of claim 17 wherein said conveying means comprises a carrier assembly juxtaposed with said dispenser and reciprocable into alignment between said core and said parison die.
Claim 20
Dependent Claim
28 words
The apparatus of claim 18 wherein said carrier assembly comprises a receptacle which is separable into at least two sections and means for separating and uniting said sections.
Claim 21
Dependent Claim
20 words
The apparatus of claim 19 wherein said separating and uniting means act in response to the movement of said core.
Claim 22
Dependent Claim
31 words
The apparatus of claim 1 wherein means for expanding said parison on said core comprises fluid under pressure carried through a passageway and directed against the inner surface of the parison.
Claim 23
Dependent Claim
13 words
The apparatus of claim 21 wherein said passageway is contained within said core.
Claim 24
Dependent Claim
26 words
The apparatus of claim 1 wherein at least one of said first and second molds include means for applying a vacuum suction to said mold cavity.
Claim 25
Dependent Claim
28 words
The apparatus of claim 1 further including a transfer device comprising at least one removal means adapted to retain said formed objects upon release from said second mold.
Claim 26
Dependent Claim
26 words
The apparatus of claim 24 comprising a plurality of removal fingers carried on indexing means for movement in and out of communication with said second mold.
Claim 27
Dependent Claim
30 words
The apparatus of claim 1 wherein at least two sets of first molds, expansion means, second molds and transfer means are provided for cooperation with said at least one core.
Claim 28
Dependent Claim
16 words
The apparatus of claim 26 wherein said sets are arranged on different sides of said core.
Claim 29
Dependent Claim
38 words
The apparatus of claim 1 wherein said means for bringing together and separating said core and first mold includes means operatively connected to said first mold for moving the mold into and out of alignment with the core.
Claim 30
Dependent Claim
27 words
The apparatus of claim 1 including means operatively connected to said second mold for moving the second mold into and out of a hollow object receiving position.
Claim 31
Dependent Claim
26 words
The apparatus of claim 29 wherein said means for moving said second mold moves same into and out of alignment with said at least one core.
Claim 32
Dependent Claim
20 words
The apparatus of claim 1 wherein said second mold has a configuration corresponding to the shape of said hollow object.
Claim 33
Dependent Claim
59 words
The apparatus of claim 1 wherein said first mold has a configuration corresponding to the final desired shape of said hollow object for expansion of said parison into said final desired shape, and wherein said second mold has a configuration corresponding to the final desired shape of said hollow object for adjusting the temperature of said final desired shape.
Claim 34
Dependent Claim
35 words
The apparatus of claim 1 including means operatively connected to said at least one core for moving said at least one core into and out of engagement with said first mold and said second mold.
Claim 35
Dependent Claim
21 words
The apparatus of claim 1 including a neck mold associated with said at least one core for retaining the parison thereon.
Claim 36
Dependent Claim
30 words
The apparatus of claim 1 including, means operatively connected to said second mold for holding said hollow object in contact with the walls of said second mold while residing therein.
References Cited (Backward Citations)
US3086248A
Cited
US3776991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |