Abstract: A sealing pin includes a distal end portion that is inserted into the cylindrical body and that presses the sealant in the sealing step and a slit that is provided to allow the sealing pin to avoid the sensor element when the sealing pin is inserted into the cylindrical body, that extends through the distal end portion in a direction perpendicular to an axial direction of the distal end portion, and that has a width larger than a thickness of the sensor element.

Abstract: A method of manufacturing a gas sensor includes a step of preparing an assembly including a sensor element, a metal cylindrical body through which the sensor element penetrates in an axial direction, and a protection cover that is attached to the cylindrical body and that covers one end side of the sensor element. The method also includes steps of arranging a coil in a periphery of at least a portion of the cylindrical body at the same side as the other end of the sensor element with respect to the protection cover to avoid the protection cover of the assembly, induction heating the portion of the cylindrical body where the coil is arranged in the periphery by applying current to the coil, and hence removing oil adhering to the portion.

Abstract: Provided is a method for manufacturing a gas sensor which suppresses a defective product caused by a defective posture of a sensor element therein. The method includes a step of obtaining an assembled body constituting the gas sensor, including steps of: causing one end of the sensor element to come to abut to a positioning member for positioning the sensor element; and applying a first force to the annularly-mounted members including a powder compact annularly mounted to the sensor element under a state that the sensor element is positioned and thereby compressing the powder compact so as to fix the sensor element inside of the tubular body, and the compression is performed while constraining the sensor element in a predetermined constraining region in the other end side of the sensor element.

Abstract: A sealing pin includes a distal end portion that is inserted into the cylindrical body and that presses the sealant in the sealing step and a slit that is provided to allow the sealing pin to avoid the sensor element when the sealing pin is inserted into the cylindrical body, that extends through the distal end portion in a direction perpendicular to an axial direction of the distal end portion, and that has a width larger than a thickness of the sensor element.

Abstract: A method of manufacturing a gas sensor includes a step of preparing an assembly including a sensor element, a metal cylindrical body through which the sensor element penetrates in an axial direction, and a protection cover that is attached to the cylindrical body and that covers one end side of the sensor element. The method also includes steps of arranging a coil in a periphery of at least a portion of the cylindrical body at the same side as the other end of the sensor element with respect to the protection cover to avoid the protection cover of the assembly, induction heating the portion of the cylindrical body where the coil is arranged in the periphery by applying current to the coil, and hence removing oil adhering to the portion.

Abstract: Provided is a method for manufacturing a gas sensor which suppresses a defective product caused by a defective posture of a sensor element therein. The method includes a step of obtaining an assembled body constituting the gas sensor, including steps of: causing one end of the sensor element to come to abut to a positioning member for positioning the sensor element; and applying a first force to the annularly-mounted members including a powder compact annularly mounted to the sensor element under a state that the sensor element is positioned and thereby compressing the powder compact so as to fix the sensor element inside of the tubular body, and the compression is performed while constraining the sensor element in a predetermined constraining region in the other end side of the sensor element.

Abstract: A sample stirring device of the present invention includes a driving roller and two follower rollers for coming into contact with a sample container including a cylindrical portion for containing a sample to be stirred. The driving roller is driven for rotation to stir the sample contained in the sample container. The two follower rollers have rotation axes inclined with respect to an axial direction of the cylindrical portion. This arrangement allows the sample container such as a blood collection tube to be rotated stably.

Abstract: A sample stirring device of the present invention includes a driving roller and two follower rollers for coming into contact with a sample container including a cylindrical portion for containing a sample to be stirred. The driving roller is driven for rotation to stir the sample contained in the sample container. The two follower rollers have rotation axes inclined with respect to an axial direction of the cylindrical portion. This arrangement allows the sample container such as a blood collection tube to be rotated stably.

Abstract: A ceramic material is a calcined article obtained by calcining a molded ceramic article and in which the pores of the calcined article are impregnated with a substance which can be removed at a temperature lower than a sintering temperature for the molded ceramic article. A method for manufacturing a ceramic product includes the steps of calcining a molded ceramic article, impregnating the open pores of the calcined ceramic article with a substance which can be removed at a temperature lower than a sintering temperature for the calcined ceramic article, mechanically machining the ceramic article to impart a desired shape thereto, removing the substance from the ceramic article, and then sintering the ceramic article. Large-sized ceramic products having a high strength and an excellent shape accuracy and having complex shapes can be manufactured at low costs.