Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Including application of internal fluid pressure to hollow...
Reexamination Certificate
2011-04-12
2011-04-12
Davis, Robert B (Department: 1743)
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Including application of internal fluid pressure to hollow...
C425S535000
Reexamination Certificate
active
07922962
ABSTRACT:
The invention relates to a plant (10) for blowing a pressure medium in a blank (12), which comprises a mould (12) which is used for receiving the blank (12) and comprises a top wall (24) trough which the neck (16) of the blank (12) is projected, a nozzle (22) which comprises a pressure medium lower output orifice (34) and is provided with an ring sealing joint (40) arranged under the lower circumference (44) of said output orifice (34) in such a way that the circumference (44) of the output orifice (34) surrounds the neck (16) of the blank (12). Said invention is characterised in that the sealing joint (40) is provided with a lower elastic annular lip (48) in such a way that the pressure medium rests on the top face (54) of said lip (48) for pressing the free annular lower edge (58) thereof against a supporting wall (18, 24), thereby ensuring the tightness of the nozzle (22).
REFERENCES:
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patent: 6464486 (2002-10-01), Barray et al.
patent: 7758333 (2010-07-01), Halbo et al.
patent: 2004/0202747 (2004-10-01), Evrard
patent: 2010/0143531 (2010-06-01), Derrier et al.
patent: 2 764 544 (1998-12-01), None
patent: 2 833 512 (2003-06-01), None
Davis Robert B
Sidel Participations
Young & Thompson
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