Abstract: A failure determination device: acquires a second digital value indicating a difference between an analog electrical output generated by inputting a first digital value incremented at a first time interval to a DA conversion circuit and a target output indicated by the first digital value at a second time interval; and determines whether the DA conversion circuit has a failure based on a signal strength in a predetermined frequency of the second digital value that is a discrete signal.

Abstract: A failure determination device: acquires a second digital value indicating a difference between an analog electrical output generated by inputting a first digital value incremented at a first time interval to a DA conversion circuit and a target output indicated by the first digital value at a second time interval; and determines whether the DA conversion circuit has a failure based on a signal strength in a predetermined frequency of the second digital value that is a discrete signal.

Abstract: A speech processing system includes one or more analog microphones each arrangeable within a cabin and configured to output a first analog speech signal, one or more digital microphones each arrangeable within the cabin and configured to output a digital speech signal, a digital-to-analog convertor configured to convert the digital speech signal into a second analog speech signal, and a speech signal processer including a delay processer configured to delay at least the first analog speech signal on the basis of a delay time period when the digital-to-analog convertor converts the digital speech signal, which is collected at the same time point as the first analog speech signal, into the second analog speech signal and output the delayed first analog speech signal as a third analog speech signal and configured to perform speech signal processing on the basis of the second analog speech signal and the third analog speech signal.

Abstract: A process including: an assembly step of assembling a sealed case onto an existing pipe; a cutting step of forming a first opening of a groove shape elongated in a pipe axis direction of the existing pipe; a second boring step of forming a circular second opening at a position of the existing pipe that opposes the first opening; and an insertion step of inserting, in a valve-open state, a butterfly-shaped valve element that is integral with a valve rod, which runs through the first and second openings, into the existing pipe 1 through the first opening until a tip portion of the valve rod protrudes from the second opening.

Abstract: A process including: an assembly step of assembling a sealed case onto an existing pipe; a cutting step of forming a first opening of a groove shape elongated in a pipe axis direction of the existing pipe; a second boring step of forming a circular second opening at a position of the existing pipe that opposes the first opening; and an insertion step of inserting, in a valve-open state, a butterfly-shaped valve element that is integral with a valve rod, which runs through the first and second openings, into the existing pipe 1 through the first opening until a tip portion of the valve rod protrudes from the second opening.

Abstract: The present flow-undisrupted process includes: enclosing a portion of an existing pipe with a sealing case; connecting a boring machine to the sealing case in a non-valve state in which no operation valve is interposed between a projecting pipe portion of the sealing case and the boring machine; forming a circular opening in an area of the existing pipe corresponding to the projecting pipe portion by means of a hole saw of the boring machine; rotating a tee and the boring machine in a circumferential direction of the existing pipe to a position at which the projecting pipe portion is completely past the opening; after the rotation, maintaining a sealed state in which the seal packing prevents a pressure of a fluid inside the existing pipe from being applied to the projecting pipe portion; and removing the boring machine from the projecting pipe portion in the sealed state.

Abstract: The present flow-undisrupted process includes: enclosing a portion of an existing pipe with a sealing case; connecting a boring machine to the sealing case in a non-valve state in which no operation valve is interposed between a projecting pipe portion of the sealing case and the boring machine; forming a circular opening in an area of the existing pipe corresponding to the projecting pipe portion by means of a hole saw of the boring machine; rotating a tee and the boring machine in a circumferential direction of the existing pipe to a position at which the projecting pipe portion is completely past the opening; after the rotation, maintaining a sealed state in which the seal packing prevents a pressure of a fluid inside the existing pipe from being applied to the projecting pipe portion; and removing the boring machine from the projecting pipe portion in the sealed state.

Abstract: An apparatus including: a sealing case having a branch hole formed in a first separate case and extending in the radial direction of an existing pipe; and a rubber packing for sealing a gap between the sealing case and the existing pipe, wherein: the first separate case has a flange for attachment and removal of a boring machine; the sealing case reciprocates in a pipe axis direction; the rubber packing forms; a first sealed area surrounding a portion of the sealing case for shutting the branch hole; a second sealed area being adjacent to, sealed against, displaced from the first sealed area in the pipe axis direction, and sized so as to be able to shut the opening bored by a cutter; and a tolerance space, into which a second seal ring escapes, is formed between a packing attachment groove and the second seal ring.

Abstract: An apparatus including: a sealing case having a branch hole formed in a first separate case and extending in the radial direction of an existing pipe; and a rubber packing for sealing a gap between the sealing case and the existing pipe, wherein: the first separate case has a flange for attachment and removal of a boring machine; the sealing case reciprocates in a pipe axis direction; the rubber packing forms; a first sealed area surrounding a portion of the sealing case for shutting the branch hole a second sealed area being adjacent to, sealed against, displaced from the first sealed area in the pipe axis direction, and sized so as to be able to shut the opening bored by a cutter; and a tolerance space, into which a second seal ring escapes, is formed between a packing attachment groove and the second seal ring.

Abstract: An equipment for use in a molten metal plating bath, comprising a bearing disposed in the molten metal plating bath for supporting a roller with an end, the bearing containing 70-95 wt. % of Si.sub.3 N.sub.4, 2-10 wt. % of Al.sub.2 O.sub.3, 1-10 wt. % of AIN and 1-10 wt. % of Y.sub.2 O.sub.3 and having a concave with a rectangular shape in section, the end of the roller being directly disposed in the concave to be supported by the bearing without using rollers.