US4690633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preparing hollow plastic articles
Assignee: Husky Injection Molding Systems Ltd
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Filing: 1985-05-14
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Granted: 1987-09-01
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Expires: 2005-05-14
Abstract
Abstract The apparatus of the present invention involves transferring plastic parisons from a receiving station to a finishing station on a plurality of pallets in a single row for forming said parisons into hollow plastic articles. The pallets with parisons thereon are transported through a temperature conditioning means for temperature conditioning said parisons to render same suitable for forming into said hollow plastic articles at the finishing station.
Inventors
- 👤 Robert D. Schad
- 👤 Herbert Rees
- 👤 Gary Hughes
- 👤 John R. Murchie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:30
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/64; B29C49/6409; B29C49/28; B29C49/4205; B29C49/42093; B29C49/42101; B29C49/68; B29C2791/00; B29C2791/004; B29C2791/006; B29C2949/00; B29C2949/07; B29C2949/0715; B29C2949/20; B29C2949/22; B29C2949/24; B29C2949/26; B29C2949/28; B29C2949/30; B29C2949/3008; B29C2949/3012; B29C2949/3016; B29C2949/302; B29C2949/3024; B29C2949/3026; B29C2949/3032; B29C2949/3056; B29C2949/3064; B29C35/00; B29C35/02; B29C35/16; B29C49/02; B29C49/06; B29C49/42073; B29C49/42077; B29C49/42079; B29C49/42085; B29C49/42103; B29C49/42105; B29C49/6604; B29C49/6605; B29C49/685
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
252 words
An apparatus for preparing hollow plastic articles said apparatus comprising: a receiving station for receiving a first number of plastic parisons; an injection molding machine in spaced relationship to said receiving station for injection molding said first number of plastic parisons in an injection molding cycle for transfer to said receiving station and means for transferring said first number to said receiving station; a finishing station for forming said plastic parisons into said hollow plastic articles; a first conveyor means moving from said receiving station to said finishing station; a second conveyor means returning from said finishing station to said receiving station; a multiplicity of pallets successively entrainable by said first and second conveyor means in a single row, each of said pallets being provided with holding means for holding a second number of parisons less than said first number, wherein said pallets are operative to transfer said plastic parisons from said receiving station to said finishing station; means to transfer said pallets from said finishing station to said second conveyor means; means to transfer said pallets from said second conveyor means one at a time to said receiving station until said holding means at said receiving station corresponds to said first number; means for transferring said pallets with said parisons thereon one at a time from said receiving station to first conveyor means; and means for transferring said pallets with said parisons thereon one at a time from said first conveyor means to said finishing station to form hollow plastic articles.
Claim 2
Independent Claim
252 words
An apparatus for preparing hollow plastic articles said apparatus comprising: a receiving station for receiving a first number of plastic parisons; an injection molding machine in spaced relationship to said receiving station for injection molding said first number of plastic parisons in an injection molding cycle for transfer to said receiving station and means for transferring said first number to said receiving station; a finishing station for forming said plastic parisons into said hollow plastic articles; a first conveyor means moving from said receiving station to said finishing station; a second conveyor means returning from said finishing station to said receiving station; a multiplicity of pallets successively entrainable by said first and second conveyor means in a single row, each of said pallets being provided with holding means for holding a second number of parisons less than said first number, wherein said pallets are operative to transfer said plastic parisons from said receiving station to said finishing station; means to transfer said pallets from said finishing station to said second conveyor means; means to transfer said pallets from said second conveyor means one at a time to said receiving station until said holding means at said receiving station corresponds to said first number; means for transferring said pallets with said parisons thereon one at a time from said receiving station to first conveyor means; and means for transferring said pallets with said parisons thereon one at a time from said first conveyor means to said finishing station to form hollow plastic articles.
Claim 3
Dependent Claim
62 words
An apparatus according to claim 1 including a temperature conditioning means adjacent the first conveyor means for conditioning the temperature of the parisons to render same suitable for forming into said hollow plastic articles at said finishing station operative to condition the temperature of said parisons to first equalize the temperature of said parisons and second to obtain the desired temperature profile.
Claim 4
Dependent Claim
21 words
An apparatus according to claim 1 including post-cooling means between the injection molding machine and receiving station for post-cooling the parisons.
Claim 5
Dependent Claim
26 words
An apparatus according to claim 1 including means associated with the conveyor means and engageable with the pallets for pushing the pallets along the conveyor means.
Claim 6
Dependent Claim
22 words
An apparatus according to claim 1 including means associated with said holding means for rotating the holding means and parisons held thereon.
Claim 7
Dependent Claim
29 words
An apparatus according to claim 2 wherein said temperature conditioning means is a temperature conditioning tunnel through which the parisons pass from the receiving station to the finishing station.
Claim 8
Dependent Claim
51 words
An apparatus according to claim 1 including means for transferring said pallets with parisons thereon one at a time from said first conveyor means to said finishing station, and means for simultaneously transferring said pallets with hollow articles thereon one at a time from said finishing station to a discharge station.
Claim 9
Dependent Claim
48 words
An apparatus according to claim 1 including means to transfer empty pallets one at a time from said second conveyor means to said receiving station and means for simultaneously transferring said pallets with parisons thereon one at a time from said receiving station to said first conveyor means.
Claim 10
Dependent Claim
36 words
An apparatus according to claim 3 including carrying means for transporting said parisons from said injection molding machine to said receiving station provided with heat transfer means to post-cool the parisons from the injection molding machine.
Claim 11
Dependent Claim
16 words
An apparatus according to claim 9 including means for maintaining the cooled parison inside the tube.
Claim 12
Dependent Claim
34 words
An apparatus according to claim 2 wherein said temperature conditioning means includes a plurality of temperature conditioning devices along the length of the parisons to provide an exact temperature profile at the finishing station.
Claim 13
Dependent Claim
31 words
An apparatus according to claim 2 wherein said parisons have an open neck portion and wherein said temperature conditioning means includes means to protect the neck from said temperature conditioning means.
Claim 14
Independent Claim
326 words
An apparatus for preparing hollow plastic articles said apparatus comprising: a receiving station for receiving a first number of plastic parisons; an injection molding machine in spaced relationship to said receiving station for injection molding said first number of plastic parisons in an injection molding cycle for transfer to said receiving station and means for transferring said first number to said receiving station; a finishing station for forming said plastic parisons into said hollow plastic articles; a first conveyor means moving from said receiving station to said finishing station; a second conveyor means returning from said finishing station to said receiving station; a multiplicity of pallets successively entrainable by said conveyor means in a single row, each of said pallets being provided with holding means for holding a second number of parisons less than said first number; means to transfer said pallets from said finishing station to said second conveyor means; means to transfer said pallets from said second conveyor means one at a time to said receiving station until said holding means at said receiving station corresponds to said first number; means for transferring said pallets with said parisons thereon one at a time from said receiving station to first conveyor means; and means for transferring said pallets with said parisons thereon one at a time from said first conveyor means to said finishing station to form hollow plastic articles, including a post-cooling means between the injection molding machine and receiving station for post-cooling the parisons, carrying means for transporting said parisons from said injection molding machine to said receiving station provided with heat transfer means to post-cool the parisons from the injection molding machine, wherein said carrier means comprises an open ended tube having a taper corresponding to the taper of the parison but somewhat smaller than the parison so that said heat transfer means is operative to shrink the parison upon cooling with the parison sliding inside the tube to fit snuggly therein.
Claim 15
Independent Claim
326 words
An apparatus for preparing hollow plastic articles said apparatus comprising: a receiving station for receiving a first number of plastic parisons; an injection molding machine in spaced relationship to said receiving station for injection molding said first number of plastic parisons in an injection molding cycle for transfer to said receiving station and means for transferring said first number to said receiving station; a finishing station for forming said plastic parisons into said hollow plastic articles; a first conveyor means moving from said receiving station to said finishing station; a second conveyor means returning from said finishing station to said receiving station; a multiplicity of pallets successively entrainable by said conveyor means in a single row, each of said pallets being provided with holding means for holding a second number of parisons less than said first number; means to transfer said pallets from said finishing station to said second conveyor means; means to transfer said pallets from said second conveyor means one at a time to said receiving station until said holding means at said receiving station corresponds to said first number; means for transferring said pallets with said parisons thereon one at a time from said receiving station to first conveyor means; and means for transferring said pallets with said parisons thereon one at a time from said first conveyor means to said finishing station to form hollow plastic articles, including a post-cooling means between the injection molding machine and receiving station for post-cooling the parisons, carrying means for transporting said parisons from said injection molding machine to said receiving station provided with heat transfer means to post-cool the parisons from the injection molding machine, wherein said carrier means comprises an open ended tube having a taper corresponding to the taper of the parison but somewhat smaller than the parison so that said heat transfer means is operative to shrink the parison upon cooling with the parison sliding inside the tube to fit snuggly therein.
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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) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |