Abstract: In one aspect of the present invention, there is provided a modular respirator comprising an elongate filter unit having a filter inlet, a filter a filter outlet, and a replaceable fluid filter for filtering pollutants within the fluid. The elongate exhaust unit having an exhaust inlet, an exhaust outlet, and one or more one-way valves. A mask assembly having a mask for covering the oral and nasal passage of a user, a mask inlet at one end of the mask, a mask outlet at an opposite end of the mask, wherein the mask inlet is releasably fastened to the filter outlet, and the mask outlet is releasably fastened to the exhaust inlet.

Abstract: A modular respirator comprising a mask assembly, an elongated filter unit, an elongated control unit, and a blower assembly. The blower assembly is located around the back of a neck of the user and housed in an air pipe, wherein the air pipe comprises an air inlet with a first female threaded connector at one end, an air outlet with a second female threaded connector at an opposite end. The elongated filter unit is located on one side of the neck of the user, wherein air flows into the elongated filter unit, and then flows opposite to the direction of the mask assembly into the inlet of the air pipe of the blower assembly, then flows into the control unit before flowing into the inlet of the mask assembly.

Abstract: A generic modular respirator comprising: a mask assembly having a first end and a second end; a replaceable main unit having a first housing with a first push-fit and twist-release connector to engage the first end of the mask, and a second housing with a second push-fit and twist-release connector to engage the second end of the mask; wherein the mask assembly and the main unit are adapted to perform breathing functions, such as breathing protection, breathing training, breathing measurement and diagnostics; such that the mask assembly is adapted to be quickly fitted to and released from the main unit by actuating the first and second push-fit and twist-release connectors.

Abstract: In one aspect of the present invention, there is provided a modular respirator comprising an elongate filter unit having a filter inlet, a filter a filter outlet, and a replaceable fluid filter for filtering pollutants within the fluid. The elongate exhaust unit having an exhaust inlet, an exhaust outlet, and one or more one-way valves. A mask assembly having a mask for covering the oral and nasal passage of a user, a mask inlet at one end of the mask, a mask outlet at an opposite end of the mask, wherein the mask inlet is releasably fastened to the filter outlet, and the mask outlet is releasably fastened to the exhaust inlet.

Abstract: A filter assembly for a breathing apparatus, such as a powered air purifying respirator. The filter assembly includes a frame for receiving and retaining a filter element, a cover connected to the frame and dimensioned to cover the aperture, a filter element, and an indicator for indicating when the filter element is retained in the filter frame and the cover is arranged across the aperture. A powered breathing apparatus including the filter assembly is also disclosed.

Abstract: A filter assembly for a breathing apparatus, such as a powered air purifying respirator. The filter assembly includes a frame for receiving and retaining a filter element, a cover connected to the frame and dimensioned to cover the aperture, a filter element, and an indicator for indicating when the filter element is retained in the filter frame and the cover is arranged across the aperture. A powered breathing apparatus including the filter assembly is also disclosed.

Abstract: A breathing apparatus including a face mask adapted to substantially cover a face of a user and a neck component attached to the face mask and surrounding the user's neck. The face mask has a peripheral region which forms a pneumatic seal against the face and an air inlet arranged proximal to the peripheral region. The neck component houses a flow generator configured to receive unfiltered air from outside of the breathing apparatus, filter the unfiltered air, and convey the filtered air to the face mask through the air inlet.

Abstract: A breathing apparatus, including a mask and a neck component. The mask is adapted to substantially surround at least the mouth or nostrils of a user. The neck component is attached to said mask, and adapted to substantially surround the back of the neck of said user. The neck component includes a flow generator to receive unfiltered air from a surrounding environment, filter said unfiltered air, and, provide filtered air to said mask. The breathing apparatus has a ‘low profile’ appearance and is adapted to sit comfortably about the neck of the user.

Abstract: A breathing apparatus (1), including a mask (2) and a neck component (3). The mask (2) is adapted to substantially surround at least the mouth or nostrils of a user. The neck component (3) is attached to said mask (2), and adapted to substantially surround the back of the neck of said user. The neck component (3) includes a flow generator to receive unfiltered air from a surrounding environment, filter said unfiltered air, and, provide filtered air to said mask (2). The breathing apparatus (1) has a ‘low profile’ appearance and is adapted to sit comfortably about the neck of the user.

Abstract: A breathing apparatus, including a mask and a neck component. The mask is adapted to substantially surround at least the mouth or nostrils of a user. The neck component is attached to said mask, and adapted to substantially surround the back of the neck of said user. The neck component includes a flow generator to receive unfiltered air from a surrounding environment, filter said unfiltered air, and, provide filtered air to said mask. The breathing apparatus has a ‘low profile’ appearance and is adapted to sit comfortably about the neck of the user.

Abstract: The present invention is directed to a wearable stutter reducing device incorporating novel methods that make extensive use of digital signal processing (DSP) technology. The wearable stutter reducing device of the present invention has an audio signal receiver for receiving speech signals corresponding to a wearer's voice. An input conversion means for converting the speech signals and noise mixed with the speech signals into frequency domain components is in communication with the audio signal receiver. A channelization means in communication with the conversion means separates the frequency domain components into a plurality of channels. An identifying means in communication with the plurality of channels identifies which channels of the plurality of channels contain substantially more speech corresponding frequency domain components than noise corresponding frequency components. An amplification means for amplifying signals identified as speech is in communication with the identifying means.

Abstract: The present invention is directed to a wearable stutter reducing device incorporating novel methods that make extensive use of digital signal processing (DSP) technology. The wearable stutter reducing device of the present invention has an audio signal receiver for receiving speech signals corresponding to a wearer's voice. An input conversion means for converting the speech signals and noise mixed with the speech signals into frequency domain components is in communication with the audio signal receiver. A channelization means in communication with the conversion means separates the frequency domain components into a plurality of channels. An identifying means in communication with the plurality of channels identifies which channels of the plurality of channels contain substantially more speech corresponding frequency domain components than noise corresponding frequency components. An amplification means for amplifying signals identified as speech is in communication with the identifying means.