Abstract: An oil air distributor is inserted in the inside of a support hole provided in a housing. The oil air distributor is designed so that outer pipes and a spacer fitted onto an inner pipe are held, through seal rings, between a flange portion provided in the inner pipe and a supply plug. In a condition in which the seal rings are compressed axially, the second oil-supply hole provided in the supply plug is communicated with branch passages provided in the housing. Further, a plurality of inner-pipe-side small holes provided in the inner pipe are opened substantially horizontally in vertically even-level positions.

Abstract: A particle detecting device for detecting particles contained in a flowing sample fluid is provided which comprises a light beam irradiating mechanism for irradiating the sample fluid with a light beam, the light beam irradiating mechanism including a light beam deflecting portion for directing the light beam across the flow of the sample fluid and for causing the light beam to scan a predetermined irradiation region of the sample fluid, this scanning causing a portion of the light beam to be scattered by the particles in the irradiation region to produce scattered light; a light receiving mechanism for receiving the scattered light and for converting the scattered light to an electrical signal; and a signal processor coupled to the light receiving mechanism for processing the electric signal to obtain at least one of the number of particles in the sample fluid and a particle size distribution for the particles in the sample fluid.