Abstract: An earplug (10, 80) for selective attenuation of sound has a body with at least one sound path. An insert (34) is housed in the body (13), which has at least one sound passage with an acoustic filter. The acoustic filter is configured to provide a specific frequency response and thus a determined attenuation of sound passing through the earplug. Means (14) is arranged at a top surface adapted to activate or deactivate the sound path. Each acoustic filter comprises an upper acoustic port (36, 37), at least one acoustic mesh (35) and/or acoustic membrane (37, 39), an acoustic chamber (41, 44) and a lower acoustic port (42, 43). An insert (34) with an acoustic filter for selective attenuation of sound is provided for use in an earplug.

Abstract: A shaped component made of technical fabric for protection of the speakers of electronic devices with waterproofing characteristics of IPx7 degree or higher, which have water-tight speakers. In addition to the function of protection from solid particles, the invention is optimised for guaranteeing fast and efficient draining-off of the water that has penetrated into the water-tight speaker so as to recover as fast as possible the initial acoustic functionality, in an improved way as compared to the solutions currently available. The component according to the present invention comprises within it one or more openings covered by synthetic technical fabric with hydrophilic treatment, to guarantee rapid exit of the water that has entered the speaker module, and one or more openings covered by synthetic technical fabric with hydrophobic treatment, to favour entry of air into the volume in front of the speaker, thus ensuring proper emptying thereof.

Abstract: A shaped component made of technical fabric for protection of the speakers of electronic devices with waterproofing characteristics of IPx7 degree or higher, which have water-tight speakers. In addition to the function of protection from solid particles, the invention is optimised for guaranteeing fast and efficient draining-off of the water that has penetrated into the water-tight speaker so as to recover as fast as possible the initial acoustic functionality, in an improved way as compared to the solutions currently available. The component according to the present invention comprises within it one or more openings covered by synthetic technical fabric with hydrophilic treatment, to guarantee rapid exit of the water that has entered the speaker module, and one or more openings covered by synthetic technical fabric with hydrophobic treatment, to favour entry of air into the volume in front of the speaker, thus ensuring proper emptying thereof.

Abstract: A composite multilayer filtering construction for use in filtering applications requiring a high filtering efficiency for particles of the order of microns and a high permeability of the filtering medium, and for use as a sub-component within acoustic and electronic products, in particular microphones and speakers, comprises at least a first layer of polymeric nanoporous membrane and at least a second layer of a synthetic monofilament precision fabric, the first polymeric nanoporous membrane layer being coupled to the second precision fabric layer thereby providing an integral filtering medium adapted to prevent a passage therethrough of particles even of 1-2 ?m and of pressurized liquids.

Abstract: An earplug (10, 80) for selective attenuation of sound has a body with at least one sound path. An insert (34) is housed in the body (13), which has at least one sound passage with an acoustic filter. The acoustic filter is configured to provide a specific frequency response and thus a determined attenuation of sound passing through the earplug. Means (14) is arranged at a top surface adapted to activate or deactivate the sound path. Each acoustic filter comprises an upper acoustic port (36, 37), at least one acoustic mesh (35) and/or acoustic membrane (37, 39), an acoustic chamber (41, 44) and a lower acoustic port (42, 43). An insert (34) with an acoustic filter for selective attenuation of sound is provided for use in an earplug.

Abstract: A composite multilayer filtering construction for use in filtering applications requiring a high filtering efficiency for particles of the order of microns and a high permeability of the filtering medium, and for use as a sub-component within acoustic and electronic products, in particular microphones and speakers, comprises at least a first layer of polymeric nanoporous membrane and at least a second layer of a synthetic monofilament precision fabric, the first polymeric nanoporous membrane layer being coupled to the second precision fabric layer thereby providing an integral filtering medium adapted to prevent a passage therethrough of particles even of 1-2 ?m and of pressurized liquids.

Abstract: A laminated double-layer textile product comprises a square mesh ferromagnetic alloy metal filament or thread technical fabric layer coupled to a square mesh synthetic monofilament technical fabric layer by laminating to provide a diffused joining of said two layers, said laminating comprising a hot-melt laminating.

Abstract: A laminated double-layer textile product comprises a square mesh ferromagnetic alloy metal filament or thread technical fabric layer coupled to a square mesh synthetic monofilament technical fabric layer by laminating to provide a diffused joining of said two layers, said laminating comprising a hot-melt laminating.

Abstract: A MEMS microphone with a built-in textile material protecting screen comprises a microphone body having an opening thereat is arranged a textile material protecting screen which is built-in in the microphone body, during the production phase of the MEMS device called “packaging”.

Abstract: A laminar textile construction, to be used in acoustic components, characterized in that said construction comprises a double layer arrangement made by coupling a technical synthetic single-thread fabric material to a polymeric film, for use as sub-component elements in acoustic and electronic products in general.

Abstract: A MEMS microphone with a built-in textile material protecting screen comprises a microphone body having an opening thereat is arranged a textile material protecting screen which is built-in in the microphone body, during the production phase of the MEMS device called “packaging”.

Abstract: A laminar textile construction, to be used in acoustic components, characterized in that said construction comprises a double layer arrangement made by coupling a technical synthetic single-thread fabric material to a polymeric film, for use as sub-component elements in acoustic and electronic products in general.

Abstract: The present invention discloses a static diving wireless control power model submarine that includes at least one air-sealed compartment having a specific volume for filling and discharging water, and the static diving wireless control power model submarine improves the draft of the submarine and provides an external hull with an artistic and hydrodynamic hull and an air-sealed internal hull for containing all necessary equipments and components. The internal hull is a tubular air-sealed compartment without any opening on its lateral sides, and the only openings are two flanges installed at prow and poop of the model submarine respectively.

Abstract: A gripper for screen printing applications comprises a gripper body supporting a tensioning assembly comprising a gripping element designed for gripping the edge of a fabric to be tensioned on a frame, and a bottom abutment cam providing a variable lowering stroke based on a withdrawal tensioning stroke of the tensioning assembly.

Abstract: A gripper for screen printing applications comprises a gripper body supporting a tensioning assembly comprising a gripping element designed for gripping the edge of a fabric to be tensioned on a frame, and a bottom abutment cam providing a variable lowering stroke based on a withdrawal tensioning stroke of the tensioning assembly.