Glass manufacturing – Blowing means with blow mold
Reexamination Certificate
2006-02-28
2006-02-28
Walls, Dionne A. (Department: 1731)
Glass manufacturing
Blowing means with blow mold
C065S233000, C065S300000, C065S362000
Reexamination Certificate
active
07003982
ABSTRACT:
A plunger for intermittently delivering counterblow air to a gob glass at a formidable temperature in a blank mold of an I.S. glass container forming machine being operated on the blow and blow process. The plunger comprises a fixed annular member with an enlarged recess at an inlet end and a valve seat at an upper end. The plunger has a sliding valve member with an annulus of the annular member, and the valve member has a stem portion and an enlarged valve seat portion at a free end thereof. The plunger further has a collar threadably and adjustably secured to the stem portion of the sliding valve member, and the collar, which is slidable within the recess of the annular member, has a plurality of air flow passages extending therethrough. Pressurized air is intermittently delivered to the recess of the annular member through an inlet line, which as an on/off valve therein.
REFERENCES:
patent: 2001764 (1935-05-01), Leonard
patent: 2725683 (1955-12-01), Lockhart
patent: 4191548 (1980-03-01), Fortner et al.
patent: 4364764 (1982-12-01), Farkas et al.
patent: 5411564 (1995-05-01), Bolin
patent: 5996709 (1999-12-01), Norris
Lyles-Irving Carmen
O-I Canada Corp.
Walls Dionne A.
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