Non-pressure plate stone shield with energy absorbing lugs, and pushrod shield for welded clevis

摘要

A fluid pressure operable actuator includes a housing, with an end wall, and a pushrod projecting through an opening in the end wall for reciprocation upon service pressure application or release. A shield, configured as an annulus, is disposed on the pushrod to restrict contamination of an interior chamber of the actuator housing through a gap existing between an edge of the opening and a pushrod outer surface. To facilitate connecting the shield and the pushrod together, the annulus has a slit with an enlarged void at a radially outer end of the slit. This enlarged void engages an outer pushrod surface as the shield and the pushrod are joined.

主权项

1. A fluid pressure operable actuator, comprising:
an actuator housing having an end wall; a pushrod projecting through an opening in the end wall for reciprocation upon service pressure application or release, an edge of the opening and a pushrod outer surface together defining a gap; and a shield disposed on the pushrod to restrict contamination of an interior chamber of the actuator housing through the gap; wherein the shield is an annulus with a slit having an enlarged void at a radially outer end of the slit to facilitate connecting the shield and the pushrod together; wherein the shield includes a plurality of lugs that receive, absorb, and dissipate lateral pushrod loading; and wherein at least some of the lugs include voids defined near tips thereof.