Abstract: A flange part of an inner ring member (11) used in a roller bearing has a thin-wall part (13) having a relatively small diameter direction thickness on its end face side, and a thick-wall part (14) having a relatively large diameter direction thickness on its center side, and an inner diameter surface has a contact part (15) fitted to a shaft at its center part, a non-contact part (16) apart from the shaft in a diameter direction at its outer edge, and a ridge line part (17) positioned on the boundary between the contact part (15) and the non-contact part (16). The axial direction width L1 of the thin-wall part (13) from an end face (12) of the inner ring member (11) and the axial direction distance L2 between the end face (12) and a ridge line part (17) of the inner ring member (11) have a relation of L1>L2.

Abstract: A flange part of an inner ring member (11) used in a roller bearing has a thin-wall part (13) having a relatively small diameter direction thickness on its end face side, and a thick-wall part (14) having a relatively large diameter direction thickness on its center side, and an inner diameter surface has a contact part (15) fitted to a shaft at its center part, a non-contact part (16) apart from the shaft in a diameter direction at its outer edge, and a ridge line part (17) positioned on the boundary between the contact part (15) and the non-contact part (16). The axial direction width L1 of the thin-wall part (13) from an end face (12) of the inner ring member (11) and the axial direction distance L2 between the end face (12) and a ridge line part (17) of the inner ring member (11) have a relation of L1>L2.

Abstract: Emergence of fretting worn powder is to be suppressed, and intrusion of the worn powder that has emerged into an internal area of the bearing. A ring spacer is interposed between an end face of an inner ring of the bearing to be mounted on a wheel axle, and an end face of a rear cover (ring member) to be mounted on the wheel axle for axial positioning of the inner race with respect to the wheel axle. An elastic seal ring is integrally fixed to an outer periphery of the ring spacer. The elastic seal ring is elastically fitted to an outer circumference of a recessed stepped portion formed on the end face of the rear cover. The elastic seal ring is thus pressed against the opposing end faces of the inner race and the rear cover. Inside the elastic seal ring, a storage space for the worn powder is provided.

Abstract: The rotation state of the bearing such as vibration is accurately sensed. A plural of rollers rollably retained with a retainer are accommodated between an inner ring and an outer ring, and a sensor for sensing the rotation state of the bearing is directly attached to the outer ring. More specifically, the outer ring, having a housing attached to its outside diameter upper part, includes a radially protruding projection in the outside diameter lower part, and the sensor is attached to the end surface of the projection.

Abstract: Emergence of fretting worn powder is to be suppressed, and intrusion of the worn powder that has emerged into an internal area of the bearing. A ring spacer is interposed between an end face of an inner ring of the bearing to be mounted on a wheel axle, and an end face of a rear cover (ring member) to be mounted on the wheel axle for axial positioning of the inner race with respect to the wheel axle. An elastic seal ring is integrally fixed to an outer periphery of the ring spacer. The elastic seal ring is elastically fitted to an outer circumference of a recessed stepped portion formed on the end face of the rear cover. The elastic seal ring is thus pressed against the opposing end faces of the inner race and the rear cover. Inside the elastic seal ring, a storage space for the worn powder is provided.

Abstract: A ceramic filter capable of burning combustible microparticles contained in smoke, without these escaping, and a smoke treatment device using the same are provided. A resin foam to which a ceramic slurry has been applied is fired so as to produce a porous ceramic body having a three-dimensional reticulate structure, at the interior of which is provided a linear electric heating element made of tungsten or the like, to produce a ceramic filter. The ceramic filter is disposed in a duct and a fan is provided so as to draw smoke from the exterior into this duct. Within the duct, a sprinkler pipe for dispersing water is connected downstream of the point at which the ceramic filter is disposed.

Abstract: A tapered roller bearing comprises inner and outer and outer rings having raceways, a large flange surface and a small flange surface, tapered rollers between the raceways and each having large and small end faces at the ends, and a retainer for the tapered rollers. The average roughness of the large end faces and the large flange surface is 0.14 &mgr;m Ra or less. The radius of curvature of the large end faces is 75 to 85% of the roller reference radius, and the central angle of the contact positions between the tapered rollers and the large flange surface is {fraction (1/15)} to {fraction (1/10)} of the roller angle. The center of the contact surface between the tapered rollers and the raceways is offset toward the large end faces from the center of the rolling surfaces of the tapered rollers by 10% or less of the effective length of the tapered rollers.

Abstract: A compact rolling bearing with a rotation sensor is proposed which has a shortened axial length of a housing for mounting the rotation sensor. The rolling bearing comprises a rotating bearing ring and a fixed bearing ring, and the rotation sensor comprises a rotating element mounted to the rotating bearing ring and a detecting element mounted on the fixed bearing ring so as to oppose the rotating element, and an electric circuit board. The electric circuit board has a flexibility. With this arrangement, it is possible to mount the electric circuit board in a curved state in a limited space on a peripheral wall of the sensor housing, and thus to shorten the axial length of the sensor housing. This provides a compact rolling bearing with the rotation sensor. Another embodiment has a magnetic encoder, the binder for which is heat-resistant nitrile rubber, fluorine rubber or silicone rubber.

Abstract: A tapered roller bearing is proposed which comprises an inner ring having a raceway on its outer peripheral surface, an outer ring having a raceway on its inner peripheral surface, a large flange surface and a small flange surface, tapered rollers rollably mounted between the raceway of the inner ring and the raceway of the outer ring and having a large end face at one end thereof and a small end face at the other end thereof, and a retainer for retaining the tapered rollers at regular spacings, wherein the average roughness R[=(Rr2+Rb2){fraction (1/2)}] of the roughness Rr of the large end faces of the tapered rollers and the roughness Rb of the large flange surface of the inner ring is 0.

Abstract: A breath-synchronization control unit for a gas feeder, capable of reliably detecting inhalation and supplying a gas, which serves to control the gas feeder to supply a gas from a gas source in synchronization with the breath.

Abstract: An incinerator plant is provided having a primary and secondary incinerator and a combustion furnace connected thereof, the incinerators having a cooling chamber filled with cooling water which is formed between the bottom plate and a partition wall plate, with the combustion chamber formed above the bottom plate. A fan chamber is formed under the partition wall plate and connected to the combustion chamber by a draft tube installed through the bottom plate and partition wall plate so that outside air fed in to the fan chamber flows in to the combustion through the draft tubes, and the bottom plate which has become hot will be cooled by cooling water in the cooling chamber. Gases produced from the incinerator are passed into the combustion chamber which is adapted to burn combustion gases generated in the primary and secondary incinerators.