发明申请
US20090023376A1 DAMPER FOR POSITIVE PRESSURE AIR CLEANER 有权
用于积极压力空气清洁器的阻尼器

DAMPER FOR POSITIVE PRESSURE AIR CLEANER
摘要:
The invention is a damper that closes off supply duct air when the unit is off to prevent air from exiting through the outlet, and opens when the unit is on to allow room air and/or supply duct air to exit through an outlet. The damper may be either motorized or mechanically biased.
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