Abstract: There is provided a fit testing method comprising: providing a respirator donned by a wearer; providing a sensor in electrical communication with a sensing element, where the sensor is configured to monitor a particulate concentration parameter of a gas space within the respirator, and a second particulate concentration parameter of a gas space outside the respirator, where the sensor is attached to the respirator such that the respirator such that the weight of the sensor is supported by the respirator; and providing a reader configured to communicate with the sensor, where the reader is configured to provide a respirator fit parameter based on a comparison of the particulate concentration within the respirator to the particulate concentration parameter outside the respirator.

Abstract: There is provided a computing device comprising: at least one processor; and a memory comprising instructions that, when executed by the at least one processor, cause the at least one processor to: receive first sensor data indicative of a gas characteristic in a sealed space formed by a face of a wearer and a negative pressure reusable respirator; receive second sensor data indicative of a position of at least one valve in the negative pressure reusable respirator; determine comparative data by comparing the first sensor data to the second sensor data; and perform one or more actions in response to the comparative data. There is also provided a system using such computing device.

Abstract: There is provided a computing device comprising: at least one processor; and a memory comprising instructions that, when executed by the at least one processor, cause the at least one processor to: receive data indicative of a gas characteristic in a sealed space formed by a face of the wearer and a negative pressure reusable respirator; determine performance of a respirator seal check by the wearer; determine that the negative pressure reusable respirator is being worn by a wearer; perform one or more actions in response to determining that the respirator is being worn by the wearer and the wearer has not performed a respirator seal check that satisfies one or more safety rules; and alter the one or more actions in response to determining that the negative pressure reusable respirator is being worn by the wearer and the wearer has performed a respirator seal check that satisfies one or more safety rules. There is also provided a system using such computing device.

Abstract: There is provided a fit testing method comprising: providing a respirator donned by a wearer; providing a sensor in electrical communication with a sensing element, where the sensor is configured to monitor a particulate concentration parameter of a gas space within the respirator, and a second particulate concentration parameter of a gas space outside the respirator, where the sensor is attached to the respirator such that the respirator such that the weight of the sensor is supported by the respirator; and providing a reader configured to communicate with the sensor, where the reader is configured to provide a respirator fit parameter based on a comparison of the particulate concentration within the respirator to the particulate concentration parameter outside the respirator.

Abstract: A method of fit testing includes providing a respirator donned by a wearer, providing an aerosol generator with a known aerosol output parameter, providing an enclosure that is physically supported around the wearer's head, where the aerosol generator delivers aerosol with the known aerosol output parameter that is at least partially contained within the enclosure around wearer's head, providing a sensor in electrical communication with a sensing element, where the sensor is operably connected to the respirator, and where the sensor is configured to monitor a particulate concentration parameter within the respirator, and providing a reader configured to communicate with the sensor, where the reader is configured to provide a respirator fit parameter based on a comparison of the particulate concentration parameter to the known aerosol output parameter.

Abstract: There is provided a fit testing method comprising: providing a respirator donned by a wearer; providing a first sensor, where the sensor is configured to monitor a particulate concentration parameter within the respirator, where the first sensor is attached to the respirator such that the weight of the first sensor is supported by the respirator; providing a second sensor configured to monitor a particulate concentration parameter outside the respirator; and providing a reader configured to communicate with the sensor, where the reader is configured to provide a respirator fit parameter based on a comparison of the particulate concentration parameter within the respirator to the particulate concentration parameter outside the respirator.

Abstract: Systems and kits for decorating walls include a plurality of décor assemblies and a plurality of complementary fastening structures. The décor assemblies include a décor element and a releasable fastening structure providing first fastening elements. The complementary fastening structure includes a base, a pressure sensitive adhesive disposed on the base, and second fastening elements. The first fastening elements are releasably mateable with the second fastening elements to define a releasable fastening system. During use, a complementary fastening structure is releasably applied to a wall, and is connected to and supports one of the décor assemblies via the releasable fastening system. The releasable fastening system can comprise low profile hooks and loops, exhibiting relatively low holding power.

Abstract: Systems and kits for decorating walls include a plurality of décor assemblies and a plurality of complementary fastening structures. The décor assemblies include a décor element and a releasable fastening structure providing first fastening elements. The complementary fastening structure includes a base, a pressure sensitive adhesive disposed on the base, and second fastening elements. The first fastening elements are releasably mateable with the second fastening elements to define a releasable fastening system. During use, a complementary fastening structure is releasably applied to a wall, and is connected to and supports one of the décor assemblies via the releasable fastening system. The releasable fastening system can comprise low profile hooks and loops, exhibiting relatively low holding power.

Abstract: A hand held dispenser for dispensing sheet material from a roll. The dispenser includes a handle assembly, an elongated blade, and a support assembly. The handle assembly includes a hub rotatably mounted to a frame. The blade extends from the frame. The support assembly includes a bracket, a brace and a support hub. The bracket is attached to the blade apart from the frame and includes a guide track. The guide track provides first and second segments that combine to define a guide axis. A leading side of the brace is slidably mounted to the guide track along the guide axis. The support hub is rotatably mounted to a trailing side of the brace. In a locked state, the leading side is slidably disposed over the track first segment and cannot rotate. In an unlocked state, the leading side is over the track second segment and is allowed to rotate.

Abstract: Systems and kits for decorating walls include a plurality of décor assemblies and a plurality of complementary fastening structures. The décor assemblies include a décor element and a releasable fastening structure providing first fastening elements. The complementary fastening structure includes a base, a pressure sensitive adhesive disposed on the base, and second fastening elements. The first fastening elements are releasably mateable with the second fastening elements to define a releasable fastening system. During use, a complementary fastening structure is releasably applied to a wall, and is connected to and supports one of the décor assemblies via the releasable fastening system. The releasable fastening system can comprise low profile hooks and loops, exhibiting relatively low holding power.

Abstract: A hand held dispenser for dispensing sheet material from a roll. The dispenser includes a handle assembly, an elongated blade, and a support assembly. The handle assembly includes a hub rotatably mounted to a frame. The blade extends from the frame. The support assembly includes a bracket, a brace and a support hub. The bracket is attached to the blade apart from the frame and includes a guide track. The guide track provides first and second segments that combine to define a guide axis. A leading side of the brace is slidably mounted to the guide track along the guide axis. The support hub is rotatably mounted to a trailing side of the brace. In a locked state, the leading side is slidably disposed over the track first segment and cannot rotate. In an unlocked state, the leading side is over the track second segment and is allowed to rotate.