Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
2011-07-05
2011-07-05
Kramer, Devon C (Department: 3746)
Pumps
Motor driven
Electric or magnetic motor
Reexamination Certificate
active
07972124
ABSTRACT:
A blower body is provided with a first wall and a second wall, and openings are provided in the walls at positions facing the approximate center of a diaphragm. An inflow passage that allows the openings to communicate with the outside is arranged between the two walls. When the diaphragm is vibrated in response to a voltage applied to a piezoelectric element, the first wall vibrates near the opening and sucks in air from the inflow passage so that the air can be ejected from the opening. A plurality of branch passages which provide sound absorption are connected to an intermediate section of the inflow passage so as to prevent noise generated near the opening from leaking from an inlet.
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patent: 2005/0074662 (2005-04-01), Cho et al.
patent: 2006/0201327 (2006-09-01), Van Rensburg et al.
patent: 6-143571 (1994-05-01), None
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Official Communication issued in International Patent Application No. PCT/JP2008/067236, mailed on Oct. 21, 2008.
Hirata Atsuhiko
Kamitani Gaku
Keating & Bennett LLP
Kramer Devon C
Lettman Bryan
Murata Manufacturing Co. Ltd.
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