Abstract: An air purifier is presented with a sensor controlling a motorized fan, wherein the sensor continuously and automatically adjusts the sensitivity setting of the sensor as the quality of air being purified changes. The average air quality readings of the air passing through an air purifier are monitored over a designated time period and, as the quality fluctuates, the sensitivity of the sensor is automatically adjusted. If the air quality is poor (i.e. a high particulate count), the sensitivity of the sensor will be adjusted to a less sensitive setting (i.e. allowing higher fan speeds so that more air can be moved through the filter) and, if the air quality is good (i.e. a low particulate count), the sensitivity of the sensor will be adjusted to a more sensitive setting (i.e. setting a lower maximum fan speed because not as much air needs to move through the filter).

Abstract: A control system in an air monitor is programmed to selectively direct air from more than one source over a sensor and various algorithms are then used to provide feedback regarding the difference between the particulate readings at each of the sources. In one embodiment, a data curve for a reading from one air source during a first time period is overlaid with a line which is linearly extrapolated beyond the end of that time period and the data curve for a reading from a second air source during an immediately subsequent second time period is overlaid with a line which is linearly extrapolated beyond the start of that time period. The difference in the contaminant level between the extrapolated lines at the end of the first time period and the beginning of the second time period approximates the difference in contaminant content between the two air sources.

Abstract: An air purifier is presented with a sensor controlling a motorized fan, wherein the sensor continuously and automatically adjusts the sensitivity setting of the sensor as the quality of air being purified changes. The average air quality readings of the air passing through an air purifier are monitored over a designated time period and, as the quality fluctuates, the sensitivity of the sensor is automatically adjusted. If the air quality is poor (i.e. a high particulate count), the sensitivity of the sensor will be adjusted to a less sensitive setting (i.e. allowing higher fan speeds so that more air can be moved through the filter) and, if the air quality is good (i.e. a low particulate count), the sensitivity of the sensor will be adjusted to a more sensitive setting (i.e. setting a lower maximum fan speed because not as much air needs to move through the filter).

Abstract: A wall hanging assembly including a wall décor item having a generally horizontally oriented receiving surface and a wall mounting rail. The wall mounting rail having an elongate base portion with a back surface adapted to mount adjacent to a wall and a front surface. The wall mounting rail further having a level receptacle on the front surface and a level carried by the receptacle. The wall mounting rail includes a generally horizontally oriented support lip extending along at least part of the wall mounting rail and arranged to bear against the receiving surface of the wall décor item.

Abstract: A picture frame that is balanced when displayed in either of two possible display orientations. The picture frame may include a framework forming a perimeter of the frame, a first wall mounting device disposed along a first side of the framework, a second wall mounting device disposed along a second side of the framework adjacent to the first side, an asymmetric rear support connected to the framework, and a support bracket removably connectable to the rear support. The asymmetric rear support is configured such that the center of gravity substantially corresponds to or aligns with the geometric center of the frame such that the frame is balanced when mounted on a substantially vertically surface (e.g., a wall) from either the first or the second wall mounting devices. The framework may also be configured to provide two alternative display perspectives of two alternatively-sized pictures.

Abstract: A wall hanging assembly including a wall décor item having a generally horizontally oriented receiving surface and a wall mounting rail. The wall mounting rail having an elongate base portion with a back surface adapted to mount adjacent to a wall and a front surface. The wall mounting rail further having a level receptacle on the front surface and a level carried by the receptacle. The wall mounting rail includes a generally horizontally oriented support lip extending along at least part of the wall mounting rail and arranged to bear against the receiving surface of the wall décor item.

Abstract: A humidifier having a lighted water tank. A lamp illuminates the tank so that the water level of the tank is visible from across the room. The lamp may extend into a lens, which in one embodiment is faceted to aid in dispersing light into the tank. The illuminated tank may also serve as a night light.

Abstract: A humidifier having a lighted water tank. A lamp illuminates the tank so that the water level of the tank is visible from across the room. The lamp may extend into a lens, which in one embodiment is faceted to aid in dispersing light into the tank. The illuminated tank may also serve as a night light.

Abstract: A side bolster system is provided for use with a mattress having a first side and a second side. The side bolster system of the present invention includes a first side bolster configured to be positioned along the first side of the mattress, and a second side bolster configured to be positioned along the second side of the mattress.

Abstract: A side bolster system is provided for use with a mattress having a first side and a second side. The side bolster system of the present invention includes a first side bolster configured to be positioned along the first side of the mattress, and a second side bolster configured to be positioned along the second side of the mattress.

Abstract: A side bolster system is provided for use with a mattress having a first side and a second side. The side bolster system of the present invention includes a first side bolster configured to be positioned along the first side of the mattress, a second side bolster configured to be positioned along the second side of the mattress, and a transverse tether having a first end coupled to the first side bolster and a second end coupled to the second side bolster.