Air shower apparatus

Ventilation – Clean room

Reexamination Certificate

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Details

C454S285000

Reexamination Certificate

active

06960128

ABSTRACT:
In an air shower apparatus, an inlet duct guides the air so that the air is directed along a first flow axis of the air, and a variable condition area communicates fluidly with the air flowing out from the inlet duct at at least one side in a direction perpendicular to the first flow axis, to generate a fluctuation at the variable condition area in at least one of a pressure to be applied to the air flowing out from the inlet duct at the variable condition area and a mass flow rate of a supplemental air to be applied from the variable condition area onto the air flowing out of the inlet duct in a fluctuating direction oblique to the first flow axis so that a second flow axis of the air passing the variable condition area is frequently deflected from the first flow axis by the fluctuation.

REFERENCES:
patent: 4644854 (1987-02-01), Stouffer et al.
patent: 4694992 (1987-09-01), Stouffer
patent: 4709622 (1987-12-01), Stouffer et al.
patent: 4774975 (1988-10-01), Ayers et al.
patent: 4823682 (1989-04-01), Stouffer
patent: 5259815 (1993-11-01), Stouffer et al.
patent: 360137462 (1985-07-01), None
patent: 62-76848 (1987-05-01), None
patent: 404032639 (1992-02-01), None
patent: 06-193958 (1994-07-01), None
patent: 10-052654 (1998-02-01), None
patent: 63-165437 (1998-10-01), None
“Self-Induced Oscillation of a Jet Issued from a Flip-Flop Jet Nozzle”, T. Koso et al, Oct. 2, 2000.
“Evaluation of Flip-Flop Jet Nozzle for Use as Practical Excitation Devices”, G. Raman et al, Transactions of the ASME, 508/vol. 116, Sep. 1994.

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