Abstract: A protective shutter device for exposing and preventing access to electrical contacts of a switchgear. The device includes a linkage assembly coupled to the housing, the linkage assembly including a first and a second drive arm. A guide assembly is coupled to the housing, and includes a first end, a second end, and a body connecting the ends. The device further includes a first shutter coupled to the first drive arm and the body of the guide assembly. The first shutter selectively moves along the body. A second shutter is coupled to the second drive arm and the guide assembly body, the second shutter including a lower and an upper plate. The lower plate is coupled to the upper plate, wherein the plates selectively move along the body to a first position to expose the electrical contacts, and to a second position to prevent access to the electrical contacts.

Abstract: A protective shutter device for exposing and preventing access to electrical contacts of a switchgear. The device includes a linkage assembly coupled to the housing, the linkage assembly including a first and a second drive ann. A guide assembly is coupled to the housing, and includes a first end, a second end, and a body connecting the ends. The device further includes a first shutter coupled to the first drive arm and the body of the guide assembly. The first shutter selectively moves along the body. A second shutter is coupled to the second drive arm and the guide assembly body, the second shutter including a lower and an upper plate. The lower plate is coupled to the tipper plate, wherein the plates selectively move along the body to a first position to expose the electrical contacts, and to a second position to prevent access to the electrical contacts.

Abstract: The present invention provides a condenser microphone. In one embodiment, the condenser microphone comprises: a frame of the microphone formed of a circuit board substrate and a casing, and an amplifier device, an elastic holding component and capacitance components provided inside the microphone. One or more sound holes are provided on the circuit board substrate or the casing. The capacitance components are provided on the side with the sound holes. The amplifier device is provided on the side opposite to the side with the sound holes. The elastic holding component is provided on the side with the amplifier device or on the side with the capacitance components.

Abstract: The present invention provides a condenser microphone. In one embodiment, the condenser microphone comprises: a frame of the microphone formed of a circuit board substrate and a casing, and an amplifier device, an elastic holding component and capacitance components provided inside the microphone. One or more sound holes are provided on the circuit board substrate or the casing. The capacitance components are provided on the side with the sound holes. The amplifier device is provided on the side opposite to the side with the sound holes. The elastic holding component is provided on the side with the amplifier device or on the side with the capacitance components.

Abstract: Disclosed is an isolated nucleic acid molecule, which molecule comprises at least 500 bases of the nucleotide sequence shown in FIG. 1, or a sequence of at least 500 bases which hybridises with the complement of the sequence shown in FIG. 1 under stringent hybridisation conditions.