| 摘要 |
A viscous fluid clutch including relatively rotatable drive members having fluid shear spaces therebetween and which are cooperable with a fluid medium in the shear spaces to provide a shear-type fluid drive therebetween, and annular reservoir for at times storing the fluid medium, a temperature-responsive valve for controlling the flow of the fluid medium, a temperature-responsive valve for controlling the flow of the fluid medium from the annular reservoir through an inlet port to the fluid shear space, continually open outlet ports formed in one drive member and cooperating pumping members formed on the other drive member for forcing the fluid medium from the fluid shear spaces to the reservoir, and a sleeve bearing for mounting the outer drive member on a drive shaft, the sleeve bearing including a central chamber and means for permitting the same fluid medium which is used for the viscous shear drive function to enter the central chamber and be dispersed outwardly for causing the fluid medium to lubricate the outer peripheral surface and the end faces of the sleeve bearing under the action of centrifugal force.
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