ACTUATOR BUSHING HAVING INTEGRAL SEALS (OPTIONS) Russian patent published in 2018 - IPC F16C33/74 F16J15/32 F16J15/56 F16K31/126 

FIELD: machine building.

SUBSTANCE: invention relates generally to actuators and, in particular, to bushings of actuators with integrated seals. In the method, the sealing assembly for the actuator includes bushing (300) having central bore (302) for accommodating a stem, annular groove (310) at one end of bushing (300, 400) surrounding the opening that accommodates flexible ring (312) to form a seal around the stem, the retaining surfaces for the yoke surrounding the annular groove to hold the bushing in the yoke; and raised annular portion (318) on the outer surface of bushing (300) to form a seal around the yoke. Annular groove (310) has a depth to ensure that annular groove (310) is in the immediate vicinity of raised annular element (318), and the pressure element and / or the force generated by the pressurized fluid located in the annular groove deflects flexible ring (312) in the direction of the stem and deflects raised annular element (318) towards the opening of the yoke.

EFFECT: technical result: ensuring that the seal between the actuator stem and the chamber is in good condition.

12 cl, 4 dwg