Abstract: A guard for a space access device is configured to output air flow through a distal end portion thereof. The guard includes q housing having a proximal end opening, a distal end opening, and a filter portion positioned between the proximal and distal end openings. The filter includes a first plate having a first opening therethrough and a second plate having a second opening therethrough. When the first plate is overlaid in contact with the second plate, this forms an aperture that extends through both the first and second plates.

Abstract: A guard for a space access device is configured to output air flow through a distal end portion thereof. The guard includes q housing having a proximal end opening, a distal end opening, and a filter portion positioned between the proximal and distal end openings. The filter includes a first plate having a first opening therethrough and a second plate having a second opening therethrough. When the first plate is overlaid in contact with the second plate, this forms an aperture that extends through both the first and second plates.

Abstract: A guard for a space access device is configured to output air flow through a distal end portion thereof. The guard includes q housing having a proximal end opening, a distal end opening, and a filter portion positioned between the proximal and distal end openings. The filter includes a first plate having a first opening therethrough and a second plate having a second opening therethrough. When the first plate is overlaid in contact with the second plate, this forms an aperture that extends through both the first and second plates.

Abstract: A device, and corresponding test method, for testing metallurgical products including an ultrasonic sensor including a plurality of elementary transducers which can be operated independently of each other and are distributed in accordance with a two-dimensional pattern is described. A first electronic component is configured to excite each of the elementary transducers in accordance with at least one temporal law corresponding to a burst of ultrasonic waves in a line of sight. A second electronic component is configured to process at least a portion of the signals captured by each of the elementary transducers. Each temporal law is arranged such that the corresponding burst produces a beam of ultrasonic waves which is generally divergent about the line of sight on moving away from the ultrasonic sensor.

Abstract: Apparatus, systems and methods for reducing feedback in a hearing aid that includes a transducer configured to detect sound, a sound processor configured to process signals from the transducer, a receiver configured to receive signals outputted from the sound processor, and an acoustic feedback reduction system. The acoustic feedback reduction system is configured to provide signals to the sound processor to produce a null targeting signal steerable toward a source of feedback.

Abstract: Securing mechanisms for space access devices, such as an audio signal transmitting device, include a plurality of flattened members that are configured to transition from a relaxed state to a securing state when the space access device is inserted into an internal space or opening that has an inside diameter smaller than an outside diameter of the flattened members in the relaxed state. The flattened members securely engage a surface of the internal space and conform to the shape and size of the internal space. An amount of force applied by the flattened members to the surface of the internal space can be tuned by changing a stiffness of a rib supporting the flattened member.

Abstract: A guard for a space access device is configured to output air flow through a distal end portion thereof. The guard includes q housing having a proximal end opening, a distal end opening, and a filter portion positioned between the proximal and distal end openings. The filter includes a first plate having a first opening therethrough and a second plate having a second opening therethrough. When the first plate is overlaid in contact with the second plate, this forms an aperture that extends through both the first and second plates.

Abstract: Securing mechanisms for space access devices, such as an audio signal transmitting device, include a plurality of flattened members that are configured to transition from a relaxed state to a securing state when the space access device is inserted into an internal space or opening that has an inside diameter smaller than an outside diameter of the flattened members in the relaxed state. The flattened members securely engage a surface of the internal space and conform to the shape and size of the internal space. An amount of force applied by the flattened members to the surface of the internal space can be tuned by changing a stiffness of a rib supporting the flattened member.

Abstract: Securing mechanisms for space access devices, such as an audio signal transmitting device, include a plurality of outwardly projecting members that are configured to transition from a relaxed state to a securing state when the space access device is inserted into an internal space or opening that has an inside diameter smaller than an outside diameter of the outwardly projecting members in the relaxed state. The outwardly projecting members securely engage a surface of the internal space and conform to the shape and size of the internal space. A sound blocking portion can be provided to substantially prevent air/sound flow past the sound blocking portion of the securing mechanism.

Abstract: Securing mechanisms for space access devices, such as an audio signal transmitting device, include a plurality of outwardly projecting members that are configured to transition from a relaxed state to a securing state when the space access device is inserted into an internal space or opening that has an inside diameter smaller than an outside diameter of the outwardly projecting members in the relaxed state. The outwardly projecting members securely engage a surface of the internal space and conform to the shape and size of the internal space. A sound blocking portion can be provided to substantially prevent air/sound flow past the sound blocking portion of the securing mechanism.

Abstract: The invention provides systems and methods for providing hearing aid. An open ear canal hearing aid may be provided in accordance with an embodiment of the invention. The hearing aid may include a part that contains electronic components, a passive amplifier, and a securing mechanism. The securing mechanism may include bristles or balloons. The securing mechanism may have various configurations and be adjustable.

Abstract: Securing mechanisms for space access devices, such as an audio signal transmitting device, include a plurality of outwardly projecting members that are configured to transition from a relaxed state to a securing state when the space access device is inserted into an internal space or opening that has an inside diameter smaller than an outside diameter of the outwardly projecting members in the relaxed state. The outwardly projecting members securely engage a surface of the internals space, conform to the shape and size of the internal space, and modulate at least one of the attenuation and frequency of audio signals and/or differentially acoustically impede audio signals transmitted through the securing mechanism and/or internal space and the space access device, without fully occluding the internal space.

Abstract: Apparatus, systems and methods for reducing feedback in a hearing aid that includes a transducer configured to detect sound, a sound processor configured to process signals from the transducer, a receiver configured to receive signals outputted from the sound processor, and an acoustic feedback reduction system. The acoustic feedback reduction system is configured to provide signals to the sound processor to produce a null targeting signal steerable toward a source of feedback.

Abstract: Securing mechanisms for space access devices, such as an audio signal transmitting device, include a plurality of outwardly projecting members that are configured to transition from a relaxed state to a securing state when the space access device is inserted into an internal space or opening that has an inside diameter smaller than an outside diameter of the outwardly projecting members in the relaxed state. The outwardly projecting members securely engage a surface of the internals space, conform to the shape and size of the internal space, and modulate at least one of the attenuation and frequency of audio signals and/or differentially acoustically impede audio signals transmitted through the securing mechanism and/or internal space and the space access device, without fully occluding the internal space.

Abstract: The invention provides systems and methods for providing hearing aid. An open ear canal hearing aid may be provided in accordance with an embodiment of the invention. The hearing aid may include a part that contains electronic components, a passive amplifier, and a securing mechanism. The securing mechanism may include bristles or balloons. The securing mechanism may have various configurations and be adjustable.

Abstract: A device, and corresponding test method, for testing metallurgical products including an ultrasonic sensor including a plurality of elementary transducers which can be operated independently of each other and are distributed in accordance with a two-dimensional pattern is described. A first electronic component is configured to excite each of the elementary transducers in accordance with at least one temporal law corresponding to a burst of ultrasonic waves in a line of sight. A second electronic component is configured to process at least a portion of the signals captured by each of the elementary transducers. Each temporal law is arranged such that the corresponding burst produces a beam of ultrasonic waves which is generally divergent about the line of sight on moving away from the ultrasonic sensor.

Abstract: A securing mechanism comprising a plurality of outwardly projecting members having a plurality of contact points that are configured to contact a surface of an opening when disposed on a space access device that is inserted in the opening, the securing mechanism being configured to apply a pressure to a contact surface within the opening less than approximately 10000 kPa.

Abstract: A securing mechanism comprising a plurality of outwardly projecting members having a plurality of contact points that are configured to contact a surface of an opening when disposed on a space access device that is inserted in the opening, the securing mechanism being configured to apply a pressure to a contact surface within the opening less than approximately 10000 kPa.

Abstract: A securing mechanism comprising a plurality of outwardly projecting members having a plurality of contact points that are configured to contact a surface of an opening when disposed on a space access device that is inserted in the opening, the securing mechanism being configured to apply a pressure to a contact surface within the opening less than approximately 10000 kPa.

Abstract: The invention provides apparatus and methods for cleaning an ear canal. The ear cleaning apparatus includes an elongated support member having an outer surface and first and second ends, and a bristle member that is attached to one end of the support member. The bristle member includes a plurality of flexible elongated members that are configured to contact a surface of an ear canal when the support member/bristle member assembly is inserted into the ear canal.