Filtering apparatus

Gas separation – Combined or convertible

Reexamination Certificate

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Details

C096S422000, C096S377000, C096S420000, C096S421000, C219S201000, C219S388000, C219S522000, C219S526000, C228S019000, C228S042000

Reexamination Certificate

active

07014673

ABSTRACT:
A filtering apparatus for a reflow oven includes a contaminated-gas inlet for receiving contaminated gas from a reflow oven; a filtering device configured to filter the received contaminated gas; a returned gas outlet for returning filtered gas to the reflow oven; a gas removal arrangement for allowing gas to escape from the apparatus; and a control arrangement for controlling the rate of gas flow through the gas removal arrangement such that in use the flow rate of contaminated gas flowing from a hotter region of the reflow oven to a cooler region of the reflow oven is controlled.

REFERENCES:
patent: 4348174 (1982-09-01), Spigarelli
patent: 4971026 (1990-11-01), Fineblum
patent: 5481087 (1996-01-01), Willemen
patent: 5579981 (1996-12-01), Matsumura et al.
patent: 5611476 (1997-03-01), Soderlund et al.
patent: 5641341 (1997-06-01), Heller et al.
patent: 5855646 (1999-01-01), Verini
patent: 5911486 (1999-06-01), Doe et al.
patent: 5993500 (1999-11-01), Bailey et al.
patent: 6120585 (2000-09-01), Inomata et al.
patent: 6146448 (2000-11-01), Shaw et al.
patent: 6576030 (2003-06-01), Mullins
patent: 6808554 (2004-10-01), Mullins
patent: 0 999 007 (2000-10-01), None
patent: 10022305 (1998-01-01), None
patent: 10057089 (1998-03-01), None
patent: WO 99/20425 (1999-04-01), None

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