Wick-based volatile substance diffuser

A diffuser comprising:

• a body defining a hollow interior and having an air flow path extending therethrough;
• a wick configured for holding a volatile substance composition therein and positioned at least partially within the hollow interior of the body;
• a closure mechanism configured to selectably isolate the wick from the air flow path extending through the body, wherein the closure mechanism comprises a wick cap movable linearly between:
• a sealed configuration in which the wick and the volatile substance composition are isolated from the air flow path;
• and
• an exposed configuration in which at least a portion of the wick positioned within the hollow interior of the body is exposed to the air flow path;
• and
• a reservoir, wherein the wick extends from the reservoir and into the hollow interior of the body and the closure mechanism is configured to selectably isolate the wick and the reservoir from the air flow path extending through the body, wherein the reservoir defines a wick aperture extending therethrough and the wick aperture is surrounded by a gasket seat, and wherein, in the sealed configuration, the wick cap depresses a gasket against the gasket seat, wherein the body is a first body portion, the reservoir is defined within a second body portion rotationally secured relative to the first body portion, a third body portion is positioned within the hollow interior of the first body portion and rotationally immobile relative to the first body portion, and the closure mechanism additionally comprises a cam mechanism configured to convert rotational movement of the second body portion relative to the first body portion into linear movement of the wick cap between the sealed configuration and the exposed configuration, wherein the cam mechanism is defined by:
• one or more splined cam slots within a sidewall of the second body portion;
• a vertical travel slot extending through a sidewall of the third body portion;
• and
• one or more cam pins each extending laterally away from an exterior surface of the wick cap and into the vertical travel slot and one of the one or more splined cam slots.

A method of assembling a diffuser, the method comprising:

• providing a first body portion, the first body portion defining a hollow interior and having an air flow path extending therethrough;
• securing a second body portion to the first body portion, the second body portion being rotatable relative to the first body portion and defining a reservoir for storing a volatile substance composition;
• providing a third body portion within the hollow interior of the first body portion, the third body portion including a sidewall and being rotationally immobile relative to the first body portion;
• positioning a wick at least partially within the hollow interior of the first body portion, the wick configured for holding the volatile substance composition therein;
• and
• providing a wick cap of a closure mechanism in the hollow interior of the first body portion and on the wick, the closure mechanism further including a cam slot defined within the second body portion and a vertical travel slot extending through the sidewall of the third body portion, the wick cap having an exterior surface and a cam pin extending away from the exterior surface of the wick cap and into the vertical travel slot and the cam slot, wherein the wick cap is movable relative to the first body portion to selectably isolate the wick from the air flow path extending through the first body portion.