摘要:
A photo-reactive grinding wheel 1 is irradiated with light by a light irradiation device 2 which is provided opposite to the grinding wheel, to bring about a chemical reaction and change in property, and dissolved/removed by a solution 4. Simultaneously, a workpiece 5 is processed by the photo-reactive grinding wheel 1. Thus, processing can be performed without causing clogging in the grinding wheel of a resin bond containing fine abrasive grains, high-grade surface roughness can be realized, and processing efficiency is relatively high. The controllability of the dressing is excellent, automation of dressing and in-process dressing can also be realized, a system which contains no metal ion in the whole processing can be designed, an expensive device is not required, and handling is easy.
摘要:
In a pair of electrodes where a potential difference is changed in accordance with acidity or basicity of oil, a reference electrode is made of cobalt or a cobalt alloy, and a sensitive electrode is made of tungsten or a tungsten alloy. The sensitive electrode is used in combination with the reference electrode. Accordingly, it is possible to provide a pair of electrodes for detecting the acidity or the basicity of the oil which use a novel electrode material not hazardous to the environment and at the same time, suited for use in a semiconductor fabrication technique.
摘要:
An air cleaner for use in an intake air passage connected to an engine of a vehicle, including a housing separable into two housings, a filter element received in one of the two housings, a sealing member for sealing contact with a sealing surface of the other housing, and a hinge device for rotatably connecting the two housings to each other, the hinge device including a receiving member having a receiving opening, and an axis member for being received in the receiving member through the receiving opening, the axis and receiving members being displaceable relative to each other substantially along a plane in which the sealing member extends, the air cleaner further including a clamp device cooperating with the hinge device to secure the two housings to each other, and a protector including two abutting portions, the protector allowing the sealing surface and the sealing member to be brought into the sealing contact with each other when the axis member is positioned at a hinging position in the receiving member, and inhibiting the sealing surface and the sealing member from being brought into the sealing contact with each other, by abutment of the two abutting portions thereof, when the axis member is not positioned at the hinging position, the protector including, as the two abutting portions thereof, a portion of one of the two housings and a portion of the other housing, respectively.
摘要:
A muffler including an offshoot path, one end of which is connected to a middle of a ventilation path so as to diverge from the ventilation path, and another end of which is closed. One portion of the offshoot path and another portion thereof are communicated through a communicating portion. Accordingly, sound waves entering the offshoot path are propagated in a direction of a closed portion, and are also propagated via the communicating portion from the one portion to the other portion.