Patent ID: 9416733
Filing Date: 2016-08-16
CPC Classification: B64C,B64D,F01D,F02C,F02K,F05D,F16J,Y02T

Claim Text:
1. A sealing device for passing a connecting rod of a system for controlling pitch of fan blades of a turboprop through a partition, comprising: a tube fastened to the partition that is to be sealed; and a frustoconical sheath through which the connecting rod passes, wherein the sheath slides axially inside the tube, wherein a first end of the sheath includes a sealing element cooperating with the tube to provide sealing between the sheath and the tube, and wherein a second end of the sheath is closed and pivotally mounted about a pivot pin of a corresponding end of the connecting rod to fasten the sheath to the connecting rod in a sealed manner, the second end of the sheath being narrower than the first end of the sheath, wherein the second end of the corresponding end of the connecting rod is mounted on a ball joint through which a pin of a clevis passes therethrough, and the ball joint and the corresponding end of the connecting rod are housed in the second end of the sheath which is closed.