Patent ID: 7167641

Claim:
An apparatus for dispersing a volatile active into air, the apparatus comprising: a replaceable refill assembly comprising a reservoir for containing a composition having a volatile active and a wick having an emanating surface and communicating with said composition for delivering said composition to said emanating surface; a retainer for receiving and releasably retaining said replaceable refill assembly; a heating element engageable with the emanating surface of said wick; a spring assembly resiliently supporting and directly attached to opposite ends of said heating element so that when said refill assembly is received by said retainer said spring assembly biases said heating element against said emanating surface and resiliently yields to prevent said heating element from breaking, and a seating flange attached to said reservoir and snap-fit into a recess aligned with said retainer such that said refill assembly is non-rotatably received in said retainer, the combination of said spring assembly and said seating flange enabling proper seating of said refill assembly in said retainer without causing breakage to said refill assembly and said heating element.