US4729732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrying means for holding and cooling a parison
Assignee: Husky Injection Molding Systems Ltd
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Filing: 1987-03-30
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Granted: 1988-03-08
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Expires: 2007-03-30
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
2026-11-05 03:08
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/72; B29C45/7207; B29C49/00; B29C49/28; B29C49/42; B29C49/4205; B29C49/42093; B29C49/42101; B29C49/42103; B29C2045/7214; B29C49/02; B29C2049/023; B29C2791/00; B29C2791/004; B29C2791/006; B29C2949/00; B29C2949/07; B29C2949/0715; B29C35/00; B29C35/02; B29C35/16; B29C49/06; B29C49/42073; B29C49/42077; B29C49/42079; B29C49/42105; B29C49/64; B29C49/6409; B29C49/6427; B29C49/6604; B29C49/6605; Y; Y10; Y10S; Y10S264/00; Y10S264/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A carrying means for holding and cooling a heated parison therein, said carrying means having an open forward end for receiving said parison, a closed rearward end, a longitudinal wall between the forward and rearward ends with an internal surfce tapering inwardly towards the closed end, cooling means adjacent the longitudinal surface, whereby the internal surface is smaller than said heated parison, said parison also having a corresponding taper so that said cooling means is operative to shrink the parison upon cooling with the parison sliding inside the tube to fit snugly therein, said carrying means further including suction means adjacent the closed end for maintaining the cooled parison inside the tube.
Claim 2
Dependent Claim
112 words
A carrying means for holding and cooling a heated parison therein, said carrying means having an open forward end for receiving said parison, a closed rearward end, a longitudinal wall between the forward and rearward ends with an internal surfce tapering inwardly towards the closed end, cooling means adjacent the longitudinal surface, whereby the internal surface is smaller than said heated parison, said parison also having a corresponding taper so that said cooling means is operative to shrink the parison upon cooling with the parison sliding inside the tube to fit snugly therein, said carrying means further including suction means adjacent the closed end for maintaining the cooled parison inside the tube.
References Cited (Backward Citations)
US4102626A
Cited
US4426202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |