S. C. Johnson Son, Inc.

Andrew N Niemiec

Robert Coon

Chris A Kubicek

Kenneth W Michaels

Thomas P Gasper

Bjorn James Gunderson

Gopal P Ananth

Erik J Moses

Michael J McGlade

Mike O'Connor

A method of alternatingly emitting two or more volatile materials comprises the steps of activating a first heater and emitting a first volatile material for a first period of time by emitting the first volatile material at a first primary evaporation rate and emitting the first volatile material at a first secondary evaporation rate after evaporation of the first volatile material at the first primary evaporation rate. The method further includes the steps of deactivating the first heater, activating a second heater, and emitting a second volatile material for a second period of time by emitting the second volatile material at a second primary evaporation rate and emitting the second volatile material at a second secondary evaporation rate after evaporation of the second volatile material at the second primary evaporation rate. The first and second secondary evaporation rates are less than the first and second primary evaporation rates.

Method of alternatingly emitting two or more volatile materials

A method of retaining only compatible refills by a volatile material dispenser includes the step of providing a dispenser having a housing and at least one movable latch disposed within the housing. The method further includes the steps of providing a compatible refill that includes a container for holding a volatile material and a wick extending from the container and inserting the refill into the housing so that the refill actuates the movable latch into engagement with a structure disposed on a neck of the refill to retain the refill within the housing. The incompatible refills are incapable of actuating the movable latch, and thus, the movable latch does not retain the incompatible refills within the housing.

Volatile material dispenser and method of retaining only compatible refills thereby

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Franklin, WI, United States of America

Andrew N Niemiec