Gas separation – Combined or convertible – In environmental air enclosure
Reexamination Certificate
2006-03-21
2006-03-21
Pham, Minh-Chau T. (Department: 1724)
Gas separation
Combined or convertible
In environmental air enclosure
C055S356000, C055S467000, C055S496000, C055S505000, C055S506000, C055S508000, C055SDIG018, C454S187000
Reexamination Certificate
active
07014674
ABSTRACT:
A biological safety cabinet includes a work chamber having a contaminated air discharge opening, a fan enclosure above the work chamber, a conduit extending from the chamber air outlet to the top of the fan enclosure, a first HEPA filter in the top of the fan enclosure, a second HEPA filter between the fan enclosure and the work chamber, and a fan within the fan enclosure to convey air through the conduit from and the first HEPA filter into the fan enclosure, and to discharge air under positive pressure from the fan enclosure through the exhaust port and through the second HEPA filter into the work chamber. Due to the construction of the cabinet, the fan can be repaired or replaced without the need to observe biohazard procedures.
REFERENCES:
patent: 3273323 (1966-09-01), Whitefield
patent: 3363539 (1968-01-01), Taylor et al.
patent: 3729905 (1973-05-01), Diccianni
patent: 3811250 (1974-05-01), Fowler, Jr.
patent: 3895570 (1975-07-01), Eagleson, Jr.
patent: 3926597 (1975-12-01), Landy
patent: 3944405 (1976-03-01), VAN Calsteren et al.
patent: 4098174 (1978-07-01), Landy
patent: 4100847 (1978-07-01), Norton
patent: 4249463 (1981-02-01), Hornby
patent: 4548627 (1985-10-01), Landy
patent: 4637301 (1987-01-01), Shields
patent: 4832717 (1989-05-01), Peters
patent: 4927438 (1990-05-01), Mears et al.
patent: 5295902 (1994-03-01), Hock
patent: 5380244 (1995-01-01), Tipton
patent: 5665128 (1997-09-01), Peters et al.
patent: 5711705 (1998-01-01), Krainiak et al.
patent: 6010400 (2000-01-01), Krainiak et al.
patent: 6036737 (2000-03-01), Smith et al.
patent: 6368206 (2002-04-01), Hunter et al.
patent: 6383241 (2002-05-01), Janus et al.
patent: 6508850 (2003-01-01), Kotliar
patent: 6623538 (2003-09-01), Thakur et al.
patent: 6896712 (2005-05-01), Ryan et al.
McNally John H.
Ryan Raymond F.
,MacCord Mason PLLC
Flow Sciences, Inc.
Pham Minh-Chau T.
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