Abstract: A picture display frame includes front and rear sides. A recess is disposed within the rear side of the display frame. A volatile material holder is disposed within the recess of the rear side. The volatile material holder includes a reservoir and a vapor permeable membrane. A slot is disposed in a side wall of the display frame in communication with a portion of the recess. The portion of the recess is adapted to hold a decorative element.

Abstract: A wick assembly for use in a dispenser for a volatile liquid includes a wick having an external surface and a discontinuity in the surface providing a location in the wick of less resistance to a force applied to the wick than a location adjacent to the discontinuity. In one embodiment, the wick is adapted to be positioned to extend from an inside of a container, through an opening defined in the container, to an outside of the container, and the wick is formed such that a portion of the wick will block the opening when the wick is broken at the discontinuity.

Abstract: A wick-based delivery system includes a container for holding a liquid that has an opening therein. A porous wick is positioned in the container so that a lower region of the wick is in contact with the liquid in the container and an upper region of the wick is exposed to the ambient air. The porous wick has discrete inner and outer concentric cylindrical sections, the inner cylindrical section being made of a sand-based material and the outer cylindrical section being made of a plastic material.

Abstract: A display frame with a refill holder comprises a transparent block with front and rear faces. A U-shaped mounting member is attached to the rear face about an outer periphery of same. The U-shaped mounting member has an inwardly extending wall. A channel is formed in a space between the rear face and the inwardly extending wall. A protrusion is attached to the rear face of the frame, wherein the protrusion in combination with the inwardly extending wall are configured to distance the rear face from a support surface when the frame is in a substantially horizontal position and provide a substantially unimpeded air passage adjacent the rear face.

Abstract: A fuel charge for use with a melting plate candle assembly includes an outer shell of fuel material surrounding an inner core of fuel material having different properties than the fuel material of the outer shell. The outer shell is substantially solid and may contain fuel additive that slows capillary flow of liquid fuel to the flame through the wick. The inner core may include liquid fuel, discrete solid fuel particles, or a solid fuel mass. The fuel additive is disposed in the fuel charge so as to slow migration of liquefied fuel to a flame on a wick only after a substantial portion of the fuel charge has been liquefied by heat from the flame.

Abstract: A volatile material dispensing system with a dispenser for providing controlled release of a volatile material, the dispenser being attached to a display frame, and having at least one protrusion. Protrusions are disposed on a face of the frame to distance the membrane from a delicate surface. The system prevents and/or hinders concentration of volatile material gases that could harm a delicate surface and resists tipping from a substantially vertical position.