Abstract: To reduce the likelihood of erroneous detection resulting from improper engagement of an engaging part with an engaged part, a fixing member is made to have a recess formed therein and is provided with a plurality of conduction paths that are electrically insulated from each other and have portions that are exposed at a plurality of positions including a first position inside the recess and in the vicinity of the innermost part of the recess and a second position inside the recess and not in the vicinity of the innermost part of the recess and other portions that are exposed outside of the recess, and a prescribed member touching the first position and second position can push the area around the opening of the recess.

Abstract: An information protection device includes: a random-contact mechanical Hall element provided with a conductive plate that has a prescribed conductive pattern, and a contact plate that is stacked on the conductive plate and that has, in an interior thereof, a connection portion partially contacting the conductive pattern; a communication line having multiple signal wires that are respectively connected to the connection portion in the random-contact mechanical Hall element; and a control unit configured to, through the communication line, monitor connection information between the connection portion and the conductive pattern in the random-contact mechanical Hall element, and determine, based on the connection information, whether or not iniquity has occurred in accordance with whether or not a connection state between the conductive pattern and the connection portion has changed from an initial setting.

Abstract: To reduce the likelihood of erroneous detection resulting from improper engagement of an engaging part with an engaged part, a fixing member is made to have a recess formed therein and is provided with a plurality of conduction paths that are electrically insulated from each other and have portions that are exposed at a plurality of positions including a first position inside the recess and in the vicinity of the innermost part of the recess and a second position inside the recess and not in the vicinity of the innermost part of the recess and other portions that are exposed outside of the recess, and a prescribed member touching the first position and second position can push the area around the opening of the recess.

Abstract: A high-voltage power source device includes: a first terminal connected to a first end of an electrical wire disposed around a predetermined region; a second terminal connected to a second end of the electrical wire; a high-voltage generation circuit connected to the first terminal and generating high-voltage electricity; a voltage detection circuit connected to the second terminal, and measuring a voltage value of the high-voltage electricity at the second terminal and determining presence of an abnormality in the electrical wire, based on a measured voltage value; a timing circuit instructing the high-voltage generation circuit to generate high-voltage electricity at a timing when the high-voltage electricity is generated, and sending an instruction to measure a voltage value of the high-voltage electricity at the second terminal to the voltage detection circuit; and a notification circuit for notifying a determination result of the voltage detection circuit to outside.

Abstract: An information protection device includes: a random-contact mechanical Hall element provided with a conductive plate that has a prescribed conductive pattern, and a contact plate that is stacked on the conductive plate and that has, in an interior thereof, a connection potion partially contacting the conductive pattern; a communication line having multiple signal wires that are respectively connected to the connection portion in the random-contact mechanical Hall element; and a control unit configured to, through the communication line, monitor connection information between the connection portion and the conductive pattern in the random-contact mechanical Hall element, and determine, based on the connection information, whether or not iniquity has occurred in accordance with whether or not a connection state between the conductive pattern and the connection portion has changed from an initial setting.

Abstract: A high-voltage power source device includes: a first terminal connected to a first end of an electrical wire disposed around a predetermined region; a second terminal connected to a second end of the electrical wire; a high-voltage generation circuit connected to the first terminal and generating high-voltage electricity; a voltage detection circuit connected to the second terminal, and measuring a voltage value of the high-voltage electricity at the second terminal and determining presence of an abnormality in the electrical wire, based on a measured voltage value; a timing circuit instructing the high-voltage generation circuit to generate high-voltage electricity at a timing when the high-voltage electricity is generated, and sending an instruction to measure a voltage value of the high-voltage electricity at the second terminal to the voltage detection circuit; and a notification circuit for notifying a determination result of the voltage detection circuit to outside.

Abstract: To provide a sintered alloy capable of showing wear resistance and a process for producing the same as well as a valve seat of good wear resistance.