Patent US3659984A successfully refreshed from Google Patents.
US3659984A
Expired / Lapsed
US
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Reciprocal fluid nozzle for cooling parison
Assignee: Phillips Petroleum Co
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Filing: 1969-12-05
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Granted: 1972-05-02
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Expires: 1989-12-05
Abstract
Abstract In a blow molding machine, a nozzle for directing a stream of fluid such as air is attached to each mold half. On closing the molds, the nozzles move into position adjacent the parison and air is impinged on the portion of the parison between the top of the mold and the die. Thereafter, the air is discontinued and the air nozzles retracted with the mold halves to allow a stripper mechanism to tear the finished article free from the die.
Inventors
- 👤 Anthony J Krstolic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:50
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/4273; B29C49/428; B29C49/42802; B29C49/02; B29C49/04; B29C49/64; B29C49/6409; B29C49/6436; B29C49/6445; B29C35/00; B29C35/16; B29C2035/1658; B29C35/02; B29C35/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
Apparatus comprising in combination: an extrusion die; two reciprocal mold halves adapted to move into engagement under said die; fluid jet nozzle means fixedly attached to each of said mold halves, said nozzles being so disposed as to direct a stream of fluid on a portion of a parison between said mold and a face of said die; a stripping mechanism adjacent said die; means to reciprocate said mold halves into and out of engagement; means to blow fluid out of said nozzles and onto the parison; and means to move said stripper mechanism down while said mold halves and nozzles are in retracted position so as to tear an article formed in said mold halves from said die.
Claim 2
Dependent Claim
119 words
Apparatus comprising in combination: an extrusion die; two reciprocal mold halves adapted to move into engagement under said die; fluid jet nozzle means fixedly attached to each of said mold halves, said nozzles being so disposed as to direct a stream of fluid on a portion of a parison between said mold and a face of said die; a stripping mechanism adjacent said die; means to reciprocate said mold halves into and out of engagement; means to blow fluid out of said nozzles and onto the parison; and means to move said stripper mechanism down while said mold halves and nozzles are in retracted position so as to tear an article formed in said mold halves from said die.
Claim 3
Dependent Claim
12 words
Apparatus according to claim 1 wherein each nozzle comprises a half circle.
Claim 4
Dependent Claim
54 words
Apparatus according to claim 1 wherein the nozzle on only one mold is connected with said means for introducing fluid and the other nozzle is adapted to couple with said nozzle connected to said means for introducing fluid in a manner such that fluid from the first nozzle can pass into the second nozzle.
Claim 5
Dependent Claim
13 words
Apparatus according to claim 1 wherein said stripping mechanism comprises an annular ring.
References Cited (Backward Citations)
CA641340A
Cited
US3125619A
Cited
US2922194A
Cited
US3075239A
Cited
US3142089A
Cited
FR1495618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |