Vacuum valve for an I.S. machine

Details Vacuum valve for an I.S. machine Vacuum valve for an I.S. machine

2011-03-22

2011-03-22

Daniels, Matthew J (Department: 1741)

Glass manufacturing

Blowing means with blow mold

Combined with vacuum means

C065S261000, C065S079000, C065S081000

Reexamination Certificate

active

07908887

ABSTRACT:
A vacuum valve for use with a blow mold in an I.S. machine. When the blow molds close around a parison, vacuum is applied to the wall of the blow mold. At some time following the application of the vacuum, final blow will occur blowing the parison into a bottle. This vacuum will be applied until the parison has been blown into a bottle. During the period during which vacuum is applied but final blow has not started, vacuum is reduced by operating a needle valve in the vacuum line.

REFERENCES:
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patent: 4657048 (1987-04-01), Foster
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patent: 6457331 (2002-10-01), Kammonen
patent: 6907756 (2005-06-01), Kozora
patent: 2004/0231363 (2004-11-01), Monden et al.
patent: 0705796 (1996-04-01), None

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