The present invention is generally directed to devices useful in insuring the proper installation of a high efficiency particulate air ("HEPA") filter into a room air purifier. In accordance with one aspect of the present invention, a magnetic interlock device is provided wherein the filter must be properly installed within the air purifier to enable closure of an electrical switch (74) within the air purifier, thereby completing an electrical circuit and permitting the air purifier motor and fan (20) to operate or to provide an audible or visual signal provided by electrically acuated means indicating incorrect placement of the filter within the device. In a second aspect of the invention, the air purifier is designed to create an audible signal to alert a user if the air purifier is operated without an air filter or if the air filter is improperly installed in the air purifier.
申请公布号
WO2006051267(A1)
申请公布日期
2006.05.18
申请号
WO2005GB04247
申请日期
2005.11.03
申请人
RECKITT BENCKISER INC;RECKITT BENCKISER (UK) LIMITED;LEVINE, LAWRENCE, T.;PACKMAN, JAY