CUFF Russian patent published in 2022 - IPC F16J15/32 

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic engineering and is intended for sealing the spatial points of rotation of the hydraulic system, between the housing and the shaft. The design solution lies in the fact that the shape of the cuff provides an increase in the fit of the cuff to the shaft with an increase in pressure in the hydraulic system, the contact at the point is converted into contact over the area of the fit surface.

EFFECT: invention provides a reduction in starting torque for such hydraulic systems as a hydraulic motor, hydraulic pump.

1 cl, 6 dwg