Paper making and fiber liberation – Apparatus – Apparatus repair – cleaning or conditioning
Reexamination Certificate
2004-01-12
2008-11-18
Halpern, Mark (Department: 1791)
Paper making and fiber liberation
Apparatus
Apparatus repair, cleaning or conditioning
C209S380000
Reexamination Certificate
active
07452447
ABSTRACT:
A steam distributor that uses a porous metal plate to replace the conventional screen plate of a steam shower for distributing steam to a moving web such as the web of a paper making machine. Steam showers using a steam distributor with this porous metal plate can deliver extremely uniform steam to the surface of a paper web. Profiling steam showers constructed by using an array of the steam distributors are able to deliver the best profiling results for various paper products. The porous metal plate can be considered as an equivalent of a screen plate with thousands of micro-orifices arranged tightly in both the machine direction and the CD direction.
REFERENCES:
patent: 1 081 278 (2001-03-01), None
patent: 1 143 067 (2001-10-01), None
patent: 2 462 514 (1981-02-01), None
Duan Shizhong
Jones Geoffrey Arthur
ABB Ltd.
Halpern Mark
Katterle Paul R.
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